C语言实现外卖管理系统

本文为大家分享了C语言外卖管理系统的具体代码，供大家参考，具体内容如下
内容
说明（废话）：上学期写的课程设计，主题是外卖管理系统，希望可以模拟网上订餐，店家工作，专人管理的过程。并实现注册与登录以及基本信息的输出，因为个人比较懒，一直没有整理上去，今天得空，要是得到大家的宝贵意见的话，会不胜荣幸。
重点内容
三端登录：分别为管理员，用户以及店主；两端注册，分别为用户以及店铺，其中店铺的注册成功需要得到管理员的审核。
管理员端可以查看店铺信息，店铺信息修改（分为增删改查），处理申请店铺，和修改本人信息。
用户端分为用户相关（为用户本人对自己信息的操作），查看订单，查看菜品，购买菜品，以及订单排序。
管理员端为增添菜品，删除菜品，修改菜品，查看菜品以及业绩查看（统计总订单与总收入）。
另外：
1. 店家注册需要的到管理员的认证，认证通过之后才可登录
2. 密码修改需要输入旧的密码，三次错误可以找回密码，输入手机号，若手机号匹配得当，则可产生三位数的随机验证码，输入验证码即可修改。
3. 对于已超过三分钟的订单不能修改，因为已经配送
4. 限制了用户的余额，当购买时余额不足时，需要进行账户的充值，而购买结束后，账户的余额也会相应的减少
以下为功能模块图：
C语言实现外卖管理系统
以下为函数调用关系图：
C语言实现外卖管理系统
以下为整个代码：
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									#include<stdio.h>

									#include<stdlib.h>

									#include<string.h> 

									#include<windows.h>

									#include<time.h>

									#include<conio.h>

									void choose();

									//建立关于店铺的结构体 

									typedef struct shop

									{

									  char name[20];

									  char phone[20];

									  char address[30];

									  char password[20];

									  struct shop *next;

									}shop,*link_shop;

									//建立关于订单的结构体 

									typedef struct food

									{

									  char name[20];

									  int type;

									  int amount;

									  int price;

									  int total;

									  char shop[20];

									  char yonghu[20];

									  char leibie[20]; 

									  struct food *next; 

									}food,*link_food;

									//建立关于用户的结构体

									typedef struct user

									{

									  char name[20];

									  char delivery[39];

									  char password[15];

									  char number[15];

									  int score;

									  struct user *next;

									}user,*link_user;

									typedef struct money

									{

									  char person[20];

									  char card[25];

									  char mima[20];

									  struct money *next;

									}money,*link_money;

									char yh[20];//用户设置全局变量 

									char dp[20];//店铺设置全局变量 

									time_t start,end;

									//函数声明

									void foodwrite(link_food LF);

									void shopwrite1(link_shop LS);

									void dingdanwrite(link_food LF);

									void user_moneywrite(link_user LM);

									void welcome()

									{

									  int i=0;

									  char a[52]="▲▼WELCOME TO RESTAURANT MANAGEMENT SYSTEM▲▼";

									  //system("color 0a");

									  printf("\n\n\n\n\t\t");

									  while(a[i])

									  {

									    printf("%c",a[i]);

									    Sleep(50);

									    i++;

									  }

									  printf("\n\n\n\n\t\t");

									}

									void Exit()

									{

									  int i=0;

									  system("cls");

									  char a[20]="LOVE you,byebye^_^";

									  system("color 03");

									  printf("\n\n\n\t\t\t");

									  while(a[i])

									  {

									    printf("%c",a[i]);

									    Sleep(100);

									    i++;

									  }

									}

									void ME()

									{

									  system("color 0b");

									  printf("\n\n\n\t\t☆★ W E L C O M E ☆★\n\n\t这里是外卖管理系统，请选择接下来的操作：");

									  printf("\n\n\t\t\t1.登陆");

									  printf("\t\t\t2.注册\t\t\t0.退出\n"); 

									}

									//主菜单（登陆或者注册）  

									void MENU()

									{

									  printf("\n\n\n\n\t\t\t\t\t================================\n");

									  printf("\t\t\t\t\t   外 卖 管 理 系 统   \n");

									  printf("\t\t\t\t\t     1.管理员登陆     \n");

									  printf("\t\t\t\t\t     2.用户登录      \n");

									  printf("\t\t\t\t\t     3.店家登陆      \n");

									  printf("\t\t\t\t\t     0.返回上一级     \n");

									  printf("\t\t\t\t\t================================\n");

									}

									//管理员选项 

									void MENU1()

									{

									  system("color 0f");

									  printf("                                     温馨小提示：按5可以清屏哦^-^\n");

									  printf("\n\n\t\t\t\t\t1.查看店铺信息▲\n");

									  printf("\t\t\t\t\t--------------\n");

									  printf("\t\t\t\t\t2.店铺信息修改▼\n");

									  printf("\t\t\t\t\t--------------\n");

									  printf("\t\t\t\t\t3.处理申请店铺▲\n");

									  printf("\t\t\t\t\t--------------\n");

									  printf("\t\t\t\t\t4.修改本人信息▼\n");

									  printf("\t\t\t\t\t--------------\n");

									  printf("\t\t\t\t\t0.返回上一级 ▲\n");

									}

									//用户选项 

									void MENU2()

									{

									  system("color 0f");

									  printf("\n\n\t\t\t\t 1.用户相关 ▲\t\t\t 5.购买菜品 ▼\n"); 

									  printf("\t\t\t\t---------------\t\t\t---------------\n");

									  printf("\t\t\t\t 2.查看订单 ▲\t\t\t 6.订单排序▼\n");

									  printf("\t\t\t\t---------------\t\t\t---------------\n");

									  printf("\t\t\t\t 3.查看菜品 ▲\t\t\t 0.返回上级 ▼\n");

									  printf("\t\t\t\t---------------\t\t\t---------------\n");

									  printf("\t\t\t\t 4.修改订单 ▲\n");

									}

									//店主选项 

									void MENU3()

									{

									  system("color 0f");

									  printf("\n\n\n\t\t\t ________ Shop Version _______\n");

									  printf("\t\t\t|               |\n");

									  printf("\t\t\t|     1.添加菜品     |\n");

									  printf("\t\t\t|     2.修改菜品     |\n");

									  printf("\t\t\t|     3.删除菜品     |\n");

									  printf("\t\t\t|     4.查看菜品     |\n");

									  printf("\t\t\t|     5.查看业绩     |\n");

									  printf("\t\t\t|     0.返回上一级    |\n");

									  printf("\t\t\t|_____________________________|\n");

									}

									//建立关于单链表

									void *creatf()

									{

									  int i=0,n;

									  link_food LF;

									  food *s,*r;

									  char a[10];

									  //srand((unsigned)time(NULL));//产生随机数的种子 

									  LF=(food *)malloc(sizeof(food));

									  LF->next=NULL;

									  r=LF;

									  while(1)

									  {

									    printf("请输入菜的名称：");

									    scanf("%s",a);

									    if(strcmp(a,"0")!=0)

									    {

									      s=(food *)malloc(sizeof(food));

									      printf("请输入菜的单价：");

									      scanf("%d",&s->price);

									      printf("请输入菜的类别");

									      scanf("%s",s->leibie); 

									      strcpy(s->name,a);

									      s->total=(s->amount)*(s->price);

									      r->next=s;

									      s->next=NULL;

									      r=s;

									    } 

									    else

									      break;

									  }

									  foodwrite(LF); 

									} 

									shop *creats()

									{

									  char a[30],b[20],c[15],d[20];

									  link_shop LS;

									  shop *s,*r;

									  LS=r=(shop *)malloc(sizeof(shop));

									  LS->next=NULL;

									  r=LS;

									  while(1)

									  {

									    printf("请输入店铺信息:\n");

									    printf("\t\t●  店铺名称：");

									    scanf("%s",a);

									    printf("\n\t\t●  店铺电话：");

									    scanf("%s",b);

									    if(strcmp(b,"0")!=0)

									    {

									      printf("\n\t\t●  店铺地址："); 

									      scanf("%s",c);

									      printf("\n\t\t●  店铺密码："); 

									      scanf("%s",d);

									      s=(shop *)malloc(sizeof(shop));

									      strcpy(s->name,a);

									      strcpy(s->phone,b);

									      strcpy(s->address,c);

									      strcpy(s->password,d);

									      r->next=s;

									      s->next=NULL;

									      r=s;

									    }

									    else

									      break;

									  }

									  return LS; 

									}

									void Outputshop(link_shop Ls)

									{

									  int n=0;

									  shop *p,*u;

									  p=Ls->next;

									  system("cls");

									  printf("入驻的商家如下：\n");

									  printf("\t\t\t\t-------------------------------------------\n");

									  printf("\t\t\t\t店铺名称\t店铺电话\t店铺地址\n");

									  printf("\t\t\t\t-------------------------------------------\n");

									  while(p)

									  {

									    printf("\t\t\t\t%8s\t%8s\t%7s\n",p->name,p->phone,p->address);

									    printf("\t\t\t\t-------------------------------------------\n");

									    p=p->next;

									  }

									  for(u =Ls->next; u != NULL;u = u->next) 

									    n++;

									  printf("\t\t\t\t合计\t\t\t\t%d个\n",n);

									  printf("\t\t\t\t-------------------------------------------\n");

									}

									void Outputfood(link_food LF)

									{

									  food *s;

									  s=LF->next;

									  int sum=0;

									  printf("订单如下：\n");

									  printf("\t----------------------------------------------------------------------------------------------------\n");

									  printf("\t菜名\t\t数量/份\t\t单价/元\t\t总价/元\t\t店铺\t\t订单号\t\t用户名\n"); 

									  printf("\t----------------------------------------------------------------------------------------------------\n");

									  for(s=LF->next;s!=NULL;s=s->next)

									  {

									    if(strcmp(s->yonghu,yh)==0)

									    {

									      printf("\t%-8s\t%-8d\t%-8d\t%-8d\t%-10s\t%-10d\t%s\n",s->name,s->amount,s->price,s->total,s->shop,s->type,s->yonghu);

									      printf("\t----------------------------------------------------------------------------------------------------\n");

									      sum=sum+s->total;

									    }

									  }

									  printf("\t累计输出/元\t\t\t\t\t\t\t%d\n",sum);

									  printf("\t----------------------------------------------------------------------------------------------------\n");

									  if(sum==0)

									  { 

									    printf("○  您还没有订单呢，快去购买吧 φ(>ω<*) ");

									    printf("\n\t\t\t\t\t->");

									    Sleep(1000);

									    printf("->");

									    Sleep(1000);

									    printf("->");

									    Sleep(1000);

									    system("cls");

									    MENU2();

									    return;

									  }

									}

									void outputfood(link_food LF)

									{

									  food *p;

									  p=LF->next;

									  printf("\n\t\t\t         菜    谱            "); 

									  printf("\n\t\t\t--------------------------------------------------\n");

									  printf("\t\t\t菜名    菜价     店铺      菜系\n"); 

									  printf("\t\t\t---------------------------------------------------\n");

									  while(p)

									  {

									    printf("\t\t\t%-13s%-12d%-14s%s\n",p->name,p->price,p->shop,p->leibie);

									    printf("\t\t\t---------------------------------------------------\n");

									    p=p->next;

									  }

									}

									//充值

									user* addmoney(user *u)

									{

									  int n;

									  char y;

									  char a[20];

									  FILE *fp;

									  link_money LY;

									  money *p,*r;

									  printf("您账户里的余额为：%d",u->score);

									  printf("是否充值？Y/else");

									  fflush(stdin);//清除缓存 

									  y=getchar();

									  if(y=='Y')

									  {

									    fp=fopen("yue.txt","rt");

									    LY=r=(money *)malloc(sizeof(money));

									    LY->next=NULL;

									    while(!feof(fp))

									    {

									      p=(money *)malloc(sizeof(money));

									      fscanf(fp,"%s %s %s\n",p->person,p->card,p->mima);

									      p->next=NULL;

									      r->next=p;

									      r=p; 

									    }    

									    fclose(fp);

									    p=LY->next;

									    while(1)

									    {

									      if(strcmp(yh,p->person)==0)

									      {

									        break;

									      }

									      else

									        p=p->next; 

									    }

									    printf("充值的钱数？");

									    scanf("%d",&n);

									    printf("请输入支付密码：");

									    scanf("%s",a);

									    if(strcmp(p->mima,a)==0)

									    {

									      u->score=(u->score+n); 

									      printf("已充值");

									    } 

									    else

									      printf("\t\t×  密码错误，充值失败");

									  }

									  else

									    printf("已放弃充值");

									  return u; 

									}          

									//按工号排序

									void name_sort(link_shop LS) 

									{ 

									  int i,j,n; 

									  n = 0; //记录店铺总数；

									  shop *u,*q,*p;

									  for(u =LS->next; u != NULL;u = u->next) 

									    n++; 

									//采用冒泡法对各个节点按姓名升序

									  for(i=1;i<=n;i++) 

									  { 

									    u =LS; 

									    for(j=0;j<n-i;j++) 

									    { 

									      p = u->next; 

									      q = p->next; 

									      if(strcmp(p->name,q->name) > 0 || strcmp(p->name,q->name) == 0) 

									      { 

									        u->next = q; 

									        p->next = q->next; 

									        q->next = p; 

									      } 

									      u = u->next; 

									    } 

									  } 

									  printf("\t排序后店铺信息\n");

									  Outputshop(LS);

									  return;

									}

									void address_sort(link_shop LS) 

									{ 

									  int i,j,n; 

									  n = 0; //记录店铺总数；

									  shop *u,*q,*p;

									  for(u =LS->next; u != NULL;u = u->next) 

									    n++; 

									//采用冒泡法对各个节点按地址升序

									  for(i=1;i<=n;i++) 

									  { 

									    u =LS; 

									    for(j=0;j<n-i;j++) 

									    { 

									      p = u->next; 

									      q = p->next;

									      if(strcmp(p->address,q->address) > 0 || strcmp(p->address,q->address) == 0) 

									      { 

									        u->next = q; 

									        p->next = q->next; 

									        q->next = p; 

									      } 

									      u = u->next; 

									    } 

									  } 

									  printf("\t\t\t\t地址排序后店铺信息\n");

									  Outputshop(LS);

									  return;

									}

									void dingdan_name_sort(link_food LF) //按订单食物名称排序 

									{ 

									  int i,j,n; 

									  n = 0; //记录店铺总数；

									  food *u,*q,*p;

									  for(u =LF->next; u != NULL;u = u->next) 

									    n++; 

									//采用冒泡法对各个节点按姓名升序

									  for(i=1;i<=n;i++) 

									  { 

									    u =LF; 

									    for(j=0;j<n-i;j++) 

									    { 

									      p = u->next; 

									      q = p->next; 

									      if(strcmp(p->name,q->name) > 0 || strcmp(p->name,q->name) == 0) 

									      { 

									        u->next = q; 

									        p->next = q->next; 

									        q->next = p; 

									      } 

									      u = u->next; 

									    } 

									  } 

									  Outputfood(LF);

									  return;

									}

									void dingdan_total_sort(link_food LF) //按订单总价从高到低排序 

									{ 

									  int i,j,n; 

									  n = 0; //记录店铺总数；

									  food *u,*q,*p;

									  for(u =LF->next; u != NULL;u = u->next) 

									    n++; 

									//采用冒泡法对各个节点按姓名升序

									  for(i=1;i<=n;i++) 

									  { 

									    u =LF; 

									    for(j=0;j<n-i;j++) 

									    { 

									      p = u->next; 

									      q = p->next; 

									      if(p->total>q->total) 

									      { 

									        u->next = q; 

									        p->next = q->next; 

									        q->next = p; 

									      } 

									      u = u->next; 

									    } 

									  } 

									  Outputfood(LF);

									  return;

									}

									void dingdandelete(link_food Lf)

									{

									  food *p,*n;

									  p=Lf;

									  n=p->next;

									  int m;

									  char a;

									  printf("请输入你所想删除的订单序号：");

									  scanf("%d",&m);

									  while(n)

									  {

									    if(m==n->type)

									    {

									      if(strcmp(n->shop,dp)==0)

									      {

									        p->next=n->next;

									        //foodwrite(Lf);

									        dingdanwrite(Lf);

									        break; 

									      }

									      else

									        printf("不好意思，您没有权限删除\n");

									      break;

									    }

									    else

									    {

									      p=p->next;

									      n=n->next;

									    }

									  }

									}

									food *dingdanread()

									{

									  FILE *fp;

									  link_food LF,r,s;

									  fp=fopen("dingdan.txt","rt");

									  if(fp==NULL)

									  { 

									    printf("查看订单失败");

									    return 0;

									  }

									  LF=r=(food *)malloc(sizeof(food));

									  r->next=NULL;

									  while(!feof(fp))

									  {

									    s=(food *)malloc(sizeof(food)); 

									    fscanf(fp,"%s %d %d %d %s %d %s\n",s->name,&s->amount,&s->price,&s->total,s->shop,&s->type,s->yonghu);

									    r->next=s;

									    s->next=NULL;

									    r=s;

									  }

									  return LF;

									}

									void scorefind(link_food LF)

									{

									  int sum=0;

									  food *p;

									  p=LF->next;

									  system("cls"); 

									  printf("\n\n\n\t\t\t产生的订单如下:\n");

									  printf("   ----------------------------------------------------------------------------------------------------\n");

									  printf("   菜品名称 \t菜品数量\t菜品单价\t菜品总价\t店铺名称\t订单号 \t\t用户名\n");

									  printf("   ----------------------------------------------------------------------------------------------------\n");

									  while(p)

									  {

									    if(strcmp(p->shop,dp)==0)

									    {

									    printf("  %7s%14d%15d%16d%16s%15d%18s\n",p->name,p->amount,p->price,p->total,p->shop,p->type,p->yonghu);

									    printf("   ----------------------------------------------------------------------------------------------------\n");

									    sum=sum+p->total;

									    }

									    p=p->next;

									  }

									  printf("   合计/元：\t\t\t\t\t\t\t累计收入%d\n",sum);

									  printf("   ----------------------------------------------------------------------------------------------------\n");

									  if(sum==0)

									    printf("\t\t●  您店里的菜还没有人购买哦，应该反思啦\n");

									}

									food * foodread()//读取 

									{

									  link_food LF;

									  food *s,*r;

									  LF=r=(food *)malloc(sizeof(food));

									  LF->next=NULL;

									  FILE *fp;

									  fp=fopen("food.txt","rt");

									  if(fp==NULL)

									  {

									    printf("不能打开此文件");

									    exit(1); 

									  }

									  while(!feof(fp))//判断文件指针是否处于文件结束位置，若是，返回1，非，返回0 

									  {

									    s=(food *)malloc(sizeof(food)); 

									    fscanf(fp,"%s %d %s %s\n",s->name,&s->price,s->shop,s->leibie);

									    r->next=s;

									    s->next=NULL;

									    r=s;

									  }

									  fclose(fp);

									  return LF; 

									 }

									money * moneyread()//读取 

									{

									  link_money LM;

									  money *s,*r;

									  LM=r=(money *)malloc(sizeof(money));

									  LM->next=NULL;

									  FILE *fp;

									  fp=fopen("yue.txt","rt");

									  if(fp==NULL)

									  {

									    printf("不能打开此文件");

									    exit(1); 

									  }

									  while(!feof(fp))//判断文件指针是否处于文件结束位置，若是，返回1，非，返回0 

									  {

									    s=(money *)malloc(sizeof(money));  

									    fscanf(fp,"%s %s %s\n",s->person,s->card,s->mima);

									    r->next=s;

									    s->next=NULL;

									    r=s;

									  }

									  fclose(fp);

									  return LM; 

									 }

									shop * shopread()

									{

									  link_shop LS;

									  shop *s,*r;

									  LS=r=(shop *)malloc(sizeof(shop));

									  r->next=NULL;

									  FILE *fp;

									  fp=fopen("shop.txt","rt");

									  if(fp==NULL)

									  {

									    printf("不能打开此文件");

									    exit(1); 

									  }

									  while(!feof(fp))//判断文件指针是否处于文件结束位置，若是，返回1，非，返回0 

									  {

									    s=(shop *)malloc(sizeof(shop));

									    s->next=NULL;

									    fscanf(fp,"%s %s %s %s\n",s->name,s->phone,s->address,s->password);

									    r->next=s;

									    r=s;

									  }

									  fclose(fp);

									  return LS; 

									 }

									user * userread()

									{

									  link_user LU;

									  user *s,*r;

									  LU=r=(user *)malloc(sizeof(user));

									  r->next=NULL;

									  FILE *fp;

									  fp=fopen("users.txt","rt");

									  if(fp==NULL)

									  {

									    printf("不能打开此文件");

									    exit(1); 

									  }

									  while(!feof(fp))//判断文件指针是否处于文件结束位置，若是，返回1，非，返回0 

									  {

									    s=(user *)malloc(sizeof(user));

									    s->next=NULL;

									    fscanf(fp,"%s %s %s %s %d\n",s->name,s->delivery,s->password,s->number,&s->score);

									    r->next=s;

									    r=s;

									  }

									  fclose(fp);

									  return LU; 

									 } 

									void deleteshop(link_shop LS)

									{

									  int i=0;

									  shop *p,*q;

									  p=LS;

									  q=p->next;

									  char m[20];

									  char a;

									  printf("请输入你所想删除的店铺名称或者电话：");

									  scanf("%s",m);

									  while(q)

									  {

									    if(strcmp(m,q->name)==0||strcmp(m,q->phone)==0)

									    {

									      i++;

									      p->next=q->next;

									      shopwrite1(LS);

									      return;

									    }

									    else

									    {

									      p=p->next;

									      q=q->next;

									    }

									  }

									  if(i==0)

									  {

									    printf("没有此店铺，无法删除\n");

									    return;

									  }

									}

									void deletedingdan(link_food Lf)

									{

									  food *p,*n;

									  p=Lf;

									  n=p->next;

									  int m,i=0;

									  char a;

									  printf("请输入你所想删除的订单号：");

									  scanf("%d",&m);

									  while(n)

									  {

									    if(n->type==m)

									    {

									      if(strcmp(n->yonghu,yh)==0)

									      {

									        p->next=n->next;

									        i++;

									        foodwrite(Lf);

									      }

									      else

									        printf("不好意思，您没有权限删除\n");

									      break;

									    }

									    else

									    {

									      p=p->next;

									      n=n->next; 

									    }

									  }

									  if(i==0)

									  {

									    printf("\t没有此订单，无法删除\n");

									    return;

									  }

									}

									void purchase()

									{

									  link_food Lf;

									  money *LM,*mo;

									  user *lu,*us;

									  FILE *fp;

									  char a[20],b[20],mi[20];

									  char y;

									  int i=0;

									  printf("\t\t◇您想吃啥呢？");

									  scanf("%s",a);

									  Lf=foodread();

									  food *p;

									  p=Lf->next;

									  srand((unsigned)time(NULL));//订单号的种子 

									  while(p!=NULL)

									  {

									    if(strcmp(p->name,a)==0||strcmp(p->leibie,a)==0)

									    {

									    // printf("%s\t%d\t%s\n",p->name,p->price,p->shop);

									      i++;

									    }  

									    p=p->next; 

									  }

									  if(i==0)

									  {

									    printf("\t\t\t×不好意思，还没有此菜呢\n");

									    system("pause");

									    system("cls");

									    MENU2();

									    return; 

									  }

									  else

									  {

									    p=Lf->next;

									    printf("\n\t\t\t--------------------------------------------------\n");

									    printf("\t\t\t菜名    菜价     店铺      菜系\n"); 

									    printf("\t\t\t---------------------------------------------------\n");

									    while(p)

									    {

									      if(strcmp(p->leibie,a)==0||strcmp(p->name,a)==0)

									      {

									        printf("\t\t\t%-13s%-12d%-14s%s\n",p->name,p->price,p->shop,p->leibie);

									        printf("\t\t\t---------------------------------------------------\n");

									      }

									      p=p->next;

									    }

									  }

									  printf("\t\t◇请输入要购买的店铺：");

									  scanf("%s",b);

									  lu=userread();

									  us=lu->next;

									  while(us)

									  {

									    if(strcmp(yh,us->name)==0)

									      break;

									    else

									      us=us->next;

									  }//找出要购买的用户信息 

									  LM=moneyread();

									  mo=LM->next;

									  i=0;

									  while(mo)

									  {

									    if(strcmp(yh,mo->person)==0)

									    {

									      i++;

									      break;

									    }

									    else

									      mo=mo->next;

									  }//找出用户的银行卡信息 

									  if(i==0)

									  {

									    printf("\t\t×  您还没有绑定银行卡哦，不能购买的");

									    return; 

									  }

									  p=Lf->next;

									  i=0;

									  while(p)

									  {

									    if(strcmp(p->name,a)==0||strcmp(p->leibie,a)==0)

									    {

									      if(strcmp(p->shop,b)==0)

									      {

									        printf("\t\t◇请输入要购买的数量");

									        scanf("%d",&p->amount);

									        if(p->amount!=0)

									        {

									          i++;

									          p->total=(p->amount)*(p->price);

									          p->type=rand()%900+100;

									          if((us->score)<p->total)

									          {

									            printf("\t\t×  您的账号余额不足，请先充值\n");

									            system("pause");

									            system("cls");

									            MENU2();

									            return;

									          }

									          printf("\t\t●确认购买？Y/else");

									          fflush(stdin);

									          y=getchar();

									          if(y=='Y')

									          {

									            printf("请输入支付密码:");

									            scanf("%s",mi);

									            if(strcmp(mi,mo->mima)==0)

									            {

									              fp=fopen("dingdan.txt","at");

									              if(fp==NULL)

									                printf("\t\t\t\t×购买失败\n");//因文件无法打开而失败

									              else

									              {

									                fprintf(fp,"%s %d %d %d %s %d %s\n",p->name,p->amount,p->price,p->total,p->shop,p->type,yh);

									                fclose(fp);

									                us->score=(us->score)-(p->total);

									                user_moneywrite(lu);

									                printf("\t\t\t\t√购买成功，请耐心等待配送\n");

									                start = time(NULL);//计时 

									                system("pause");

									                system("cls");

									                MENU2();

									                return;

									              }    

									            }

									            else

									            {

									              printf("\t\t×  密码错误，购买失败");

									              system("pause");

									              system("cls");

									              MENU2();

									              return; 

									            }    

									          } 

									          else

									          {

									            printf("\t\t\t×已放弃购买");

									            system("pause");

									            system("cls");

									            MENU2();

									            return; 

									          }

									        }

									        else

									        {

									          printf("\t\t\t×请输入正确的数量");

									          system("pause");

									          system("cls");

									          MENU2();

									          return; 

									        }

									      }

									    }

									    p=p->next;

									  }

									  if(i==0)

									  {

									    printf("\t\t×请输入表中的店铺名称哦\n");

									    system("pause");

									    system("cls");

									    MENU2(); 

									  }

									}

									void foodwrite(link_food LF)//保存 

									 {

									  FILE *fp;

									  food *p;

									  char a;

									  printf("确认保存？(Y/else)");

									  scanf("%*c%c",&a);

									  if(a=='Y')

									  {

									    fp=fopen("food.txt","at");

									    if(fp==NULL)

									      printf("错误！无法打开");

									    for(p=LF->next;p!=NULL;p=p->next)

									      fprintf(fp,"%s %d %s %s\n",p->name,p->price,dp,p->leibie);

									    printf("修改成功\n");

									    fclose(fp);

									    return;

									  }

									  else

									    printf("已放弃修改");

									 }

									 void foodwrite1(link_food LF)

									 {

									  FILE *fp;

									  food *p;

									  char a;

									  printf("确认保存？(Y/else)");

									  scanf("%*c%c",&a);

									  if(a=='Y')

									  {

									    fp=fopen("food.txt","wt");

									    if(fp==NULL)

									      printf("错误！无法打开");

									    for(p=LF->next;p!=NULL;p=p->next)

									      fprintf(fp,"%s %d %s %s\n",p->name,p->price,p->shop,p->leibie);

									    printf("修改成功\n");

									    fclose(fp);

									    return;

									  }

									  else

									    printf("已放弃修改");

									 }

									// void foodwrite2(link_food LF)

									// {

									// FILE *fp;

									// food *p;

									// char a;

									// printf("确认保存？(Y/else)");

									// scanf("%*c%c",&a);

									// if(a=='Y')

									// {

									//   fp=fopen("food.txt","wt");

									//   if(fp==NULL)

									//     printf("错误！无法打开");

									//   for(p=LF->next;p!=NULL;p=p->next)

									//     fprintf(fp,"%s %d %s %s\n",p->name,p->price,p->shop,p->leibie);

									//   printf("修改成功\n");

									//   fclose(fp);

									//   return;

									// }

									// else

									//   printf("已放弃修改");

									// }

									 void dingdanwrite(link_food LF)

									 {

									  FILE *fp;

									  food *p;

									  char a;

									  printf("确认保存？(Y/else)");

									  scanf("%*c%c",&a);

									  if(a=='Y')

									  {

									    fp=fopen("dingdan.txt","wt");

									    if(fp==NULL)

									      printf("错误！无法打开");

									    for(p=LF->next;p!=NULL;p=p->next)

									      fprintf(fp,"%s %d %d %d %s %d %s\n",p->name,p->amount,p->price,p->total,p->shop,p->type,p->yonghu);

									    printf("修改成功\n");

									    fclose(fp);

									    return;

									  }

									  else

									    printf("已放弃修改"); 

									 }

									void shopwrite1(link_shop LS)

									 {

									  FILE *fp;

									  shop *p;

									  char a;

									  printf("确认保存？(Y/else)");

									  scanf("%*c%c",&a);

									  if(a=='Y')

									  {

									    fp=fopen("shop.txt","wt");

									    if(fp==NULL)

									      printf("错误！无法打开");

									    for(p=LS->next;p!=NULL;p=p->next)

									      fprintf(fp,"%s %s %s %s\n",p->name,p->phone,p->address,p->password);

									    printf("保存成功\n");

									    fclose(fp);

									    return;

									  }

									  else

									    printf("已放弃");

									 }

									 void shopwrite2(link_shop LS)

									 {

									  FILE *fp;

									  shop *p;

									  char a;

									  printf("是否将信息保存至文件里？(Y/else)");

									  scanf("%*c%c",&a);

									  if(a=='Y')

									  {

									    fp=fopen("shop.txt","at");

									    if(fp==NULL)

									      printf("错误！无法打开");

									    for(p=LS->next;p!=NULL;p=p->next)

									    fprintf(fp,"%s %s %s\n",p->name,p->phone,p->address);

									    printf("修改成功\n");

									    fclose(fp);

									    return;

									  }

									  else

									    printf("已放弃修改");

									 }

									 void userwrite(link_user LU)

									 {

									  FILE *fp;

									  user *p;

									  char a;

									// printf("请确认？(Y/else)");

									// scanf("%*c%c",&a);

									// if(a=='Y')

									// {

									    fp=fopen("users.txt","wt");

									    if(fp==NULL)

									      printf("错误！无法打开");

									    for(p=LU->next;p!=NULL;p=p->next)

									      fprintf(fp,"%s %s %s %s %d\n",p->name,p->delivery,p->password,p->number,p->score);

									    printf("操作成功\n");

									    fclose(fp);

									    return;

									// }

									  //else

									    //printf("已放弃注册");

									 }

									 void user_moneywrite(link_user LM)

									 {

									  FILE *fp;

									  user *p;

									  char a;

									// printf("是否将信息保存至文件里？(Y/else)");

									// scanf("%*c%c",&a);

									// if(a=='Y')

									// {

									    fp=fopen("users.txt","wt");

									    if(fp==NULL)

									      printf("错误！无法打开");

									    for(p=LM->next;p!=NULL;p=p->next)

									      fprintf(fp,"%s %s %s %s %d\n",p->name,p->delivery,p->password,p->number,p->score);

									    //printf("注册成功\n");

									    fclose(fp);

									    //return;

									// }

									  //else

									    //printf("已放弃注册");

									 }

									 void userwrite2(link_user LU)

									 {

									  FILE *fp;

									  user *p;

									  char a;

									  printf("是否将信息保存至文件里？(Y/else)");

									  scanf("%*c%c",&a);

									  if(a=='Y')

									  {

									    fp=fopen("users.txt","at");

									    if(fp==NULL)

									      printf("错误！无法打开");

									    for(p=LU->next;p!=NULL;p=p->next)

									      fprintf(fp,"%s %s %s %s %d\n",p->name,p->delivery,p->password,p->number,p->score);

									    printf("注册成功\n");

									    fclose(fp);

									    return;

									  }

									  else

									    printf("已放弃注册");

									 }

									void increaseshop(link_shop LS)

									{

									  char a[30],b[20],c[15],d[20];

									  shop *s;

									  printf("请输入你所想加入的店铺信息：\n");

									  printf("\t\t●  店铺名称：");

									  scanf("%s",a);

									  printf("\n\t\t●  店铺电话：");

									  scanf("%s",b);

									  printf("\n\t\t●  店铺地址："); 

									  scanf("%s",c);

									  printf("\n\t\t●  店铺密码："); 

									  scanf("%s",d);

									  if(strcmp(a,"0")!=0)

									  {

									    s=(shop *)malloc(sizeof(shop));

									    strcpy(s->name,a);

									    strcpy(s->phone,b);

									    strcpy(s->address,c);

									    strcpy(s->password,d);

									  }

									  s->next=LS->next;

									  LS->next=s; 

									  shopwrite1(LS);

									 }

									void shopfind(link_shop LS)

									{ 

									  shop *p;

									  char E[20];

									  p=LS->next;

									  printf("请输入店铺的名称：");

									  scanf("%s",E); 

									  while(strcmp(p->name,E)!=0&&(p->next)!=NULL)

									  {

									    p=p->next;

									  }

									  if((p->next)==NULL)

									  {

									    printf("没有此店铺");

									    return;

									  }  

									  printf("您所查询的店铺信息为：\n名称\t电话\t地址\n");

									  printf("%s %s %s",p->name,p->phone,p->address);

									} 

									void registerdeal()

									{

									  int q;

									  FILE *fp;

									  char y;

									  link_shop head;

									  shop *r,*p;

									  head=r=(shop *)malloc(sizeof(shop));

									  r->next=NULL;

									  fp=fopen("shenqing.txt","rt");

									  if(fp==NULL)

									  {

									    printf("发生错误，无法打开文件");

									    return; 

									  }

									  if((y=fgetc(fp))==EOF)

									  {

									    printf("目前没有需要处理的信息\n");

									    system("pause");

									    system("cls");

									    MENU1();

									    return;

									  }

									  else

									  {

									    while(!feof(fp))

									    {

									      p=(shop *)malloc(sizeof(shop));

									      fscanf(fp," %s %s %s %s \n",p->name,p->phone,p->address,p->password);

									      r->next=p;

									      p->next=NULL;

									      r=p;

									    }

									    for(p=head->next;p!=NULL;p=p->next)

									      printf("%s %s %s\n",p->name,p->phone,p->address); 

									    printf("是否同意注册？Y/else");

									    scanf("%*c%c",&y); 

									    if(y=='Y')

									    {

									      fp=fopen("shop.txt","at");

									      if(fp==NULL)

									        printf("文件不存在，打开错误\n"); 

									      for(p=head->next;p!=NULL;p=p->next)

									        fprintf(fp,"% s %s %s %s \n",p->name,p->phone,p->address,p->password);

									      fclose(fp);

									    } 

									  } 

									  printf("处理成功"); 

									  fp=fopen("shenqing.txt","wt");

									  fclose(fp);

									}

									void MENU1_choose()

									{

									  int n,m,q;

									  char a[20],b[20],c[20],d[20];

									  char y;

									  FILE *fp,*fa;

									  shop *p;

									  shop sq;

									  link_shop LS;

									  link_user LU;

									  LS=shopread();

									  while(1)

									  {

									    printf("请选择你想所想进行的选项:\n"); 

									    scanf("%d",&n);

									    if(n==1)

									    {

									      Outputshop(LS);

									      printf("是否进行排序？Y/else");

									      fflush(stdin);

									      y=getchar();

									      if(y=='Y')

									      {

									        system("cls");

									        printf("\n\n\n\t\t\t●1.按店铺名称排序\n");

									        printf("\t\t\t●2.按店铺地址排序\n");

									        scanf("%d",&m);

									        if(m==1)

									          name_sort(LS);

									        if(m==2)

									          address_sort(LS);

									        printf("1.退出\t2.返回");

									        scanf("%d",&m);

									        if(m==1)

									          exit(0);

									        else

									        {

									          system("cls");

									          MENU1();

									          continue;

									        } 

									      }

									      else

									      {

									        printf("已放弃排序\n");

									        system("cls");

									        MENU1();

									      }

									    }

									    if(n==2)

									    {

									      system("cls");

									      printf("\n\n\n\t\t\t☆【1】删除店铺\n");

									      printf("\t\t\t☆【2】增加店铺\n");

									      printf("\t\t\t☆【3】输入店铺\n");

									      printf("\t\t\t☆【0】返回上一级\n");

									      printf("\n\t\t请选择将要进行的操作：\n"); //二级 

									      while(1)

									      {

									        scanf("%d",&m);

									        if(m==1)

									          deleteshop(LS);

									        if(m==2)

									          increaseshop(LS);

									        if(m==3)

									        { 

									          LS=creats();

									          shopwrite1(LS);

									        }

									        if(m==4)

									          shopfind(LS);  

									        if(m==0)

									        {

									          system("cls");

									          MENU1();

									          break;

									        } 

									      }    

									    }

									    if(n==3)

									      registerdeal();//注册处理以及投诉处理函数 

									    if(n==4)

									    {

									      //LU=userread();

									      system("cls");

									      printf("\n\t请选择所想进行的选项：\n\n");

									      printf("\t● ○ ● ○ ● ○ ●\n");

									      printf("\t  1.查看个人信息  \n");

									      printf("\t○ 2.修改个人信息 ○\n");

									      printf("\t  0.返回上一级   \n");//二级 

									      printf("\t● ○ ● ○ ● ○ ●\n");

									      while(1)

									      {

									        scanf("%d",&m);

									        if(m==1)

									        {

									          char d[20];

									          fa=fopen("admin.txt","rt");

									          fscanf(fa,"%s %s %s %s",a,b,c,d);

									          fclose(fa);

									          printf("\n\t\t地区\t姓名\t电话号码\n");

									          printf("\t\t%s\t%s\t%s\n",a,b,d);

									        }

									        if(m==2)

									        {

									          system("cls");

									          printf("\n                             温馨提示，按0返回哦(〃'▽'〃)\n"); 

									          printf("\n\t\t● ○ ● ○ ● ○ ●\n");

									          printf("\t\t   1.修改姓名   \n");

									          printf("\t\t○  2.修改地址  ○\n");

									          printf("\t\t   3.修改密码   \n");//三级 

									          printf("\t\t● ○ ● ○ ● ○ ●\n");

									          scanf("%d",&q); 

									          if(q==1)

									          {

									            printf("请输入新的姓名：\n");

									            scanf("%s",b);

									          }

									          if(q==2)

									          {

									            printf("请输新的地址：\n");

									            scanf("%s",a); 

									          } 

									          if(q==3)//修改密码，含找回密码 

									          {

									            int j=0,h; 

									            char f[20],e[20];

									            fa=fopen("admin.txt","rt");

									            fscanf(fa,"%s %s %s %s",a,b,c,d);

									            printf("您需要输入旧的密码：\n");

									            scanf("%s",f);

									            while(strcmp(f,c)!=0)

									            {

									              j++; 

									              printf("\t\t×您的密码有误,请重新输入：");

									              scanf("%s",f);

									              if(j==2)

									              {

									                printf("\t\t×您已经连续输错三次，按1找回密码，其他数字键返回:");

									                scanf("%d",&j);

									                if(j==1)

									                {

									                  printf("请输入您的电话号码:");

									                  scanf("%s",e);

									                  if(strcmp(e,d)==0)

									                  {

									                    srand((unsigned)time(NULL));

									                    j=rand()%900+100;

									                    fp=fopen("yanzheng.txt","wt");

									                    //fscanf(fp,"%d\n",&j);

									                    fprintf(fp,"%d\n",j);

									                    fclose(fp);

									                    printf("我们已经发送验证码到您的手机，请输入:");

									                    scanf("%d",&h);

									                    if(h==j)

									                    {

									                      printf("\t\t√请重新设置您的密码:");

									                      scanf("%s",c);

									                      break; 

									                    }

									                    else

									                    {

									                      printf("\t\t×验证码错误\n");

									                      break; 

									                    }

									                  }

									                  else

									                  {

									                    printf("\t\t×找回密码失败\n");

									                    break; 

									                  }

									                }

									                else

									                {

									                  system("cls");

									                  MENU();

									                  return; 

									                }

									              }

									            }

									            if(strcmp(c,f)==0)

									            {

									              printf("请输入新的密码：\n");

									              scanf("%s",c);

									            }

									          }

									          if(q==1||q==2||q==3)

									          {

									            printf("是否保存？Y/else");

									            fflush(stdin);

									            y=getchar();

									            if(y=='Y')

									            {

									              fa=fopen("admin.txt","wt");

									              fprintf(fa,"%s %s %s %s",a,b,c,d);

									              fclose(fa);

									              printf("\t\t√保存成功"); 

									            }

									            else

									              printf("\t\t×已放弃修改");

									            system("pause");

									            system("cls");

									            printf("\n\t请选择所想进行的选项：\n\n");

									            printf("\t● ○ ● ○ ● ○ ●\n");

									            printf("\t  1.查看个人信息  \n");

									            printf("\t○ 2.修改个人信息 ○\n");

									            printf("\t  0.返回上一级   \n");//二级 

									            printf("\t● ○ ● ○ ● ○ ●\n");

									            continue; 

									          }

									          if(q==0)

									          {

									            system("cls");

									            printf("\n\t请选择所想进行的选项：\n\n");

									            printf("\t● ○ ● ○ ● ○ ●\n");

									            printf("\t  1.查看个人信息  \n");

									            printf("\t○ 2.修改个人信息 ○\n");

									            printf("\t  0.返回上一级   \n");//二级 

									            printf("\t● ○ ● ○ ● ○ ●\n");

									            continue;

									          }

									        }

									        if(m==0) 

									        {

									          system("cls");

									          MENU1();

									          break;

									        } 

									      } 

									    }

									    if(n==5)

									    {

									      system("cls");

									      MENU1();

									    }

									    if(n==0)

									    {

									      system("cls");

									      MENU();

									      break;

									    }

									    if(n!=1&&n!=2&&n!=3&&n!=4&&n!=5&&n!=0)

									    {

									      printf("\t\t∷");

									      Sleep(400);

									      printf("∷");

									      Sleep(400);

									      printf("∷");

									      Sleep(400);

									      printf("您需要输入菜单上的数字哦\n"); 

									    }  

									  }

									}

									void MENU2_choose()

									{

									  int n,m,q,i=0;

									  char a[20],b[20];

									  char y;

									  FILE *fp;

									  user *u;

									  food *p,*s,*r;

									  link_food LF,Lf;

									  LF=foodread();

									  link_user LU;

									// user user;

									  while(1)

									  {

									    scanf("%d",&n);

									    switch(n)

									    {

									      case 1:

									          system("cls");

									          printf("\n\n\t\t\t请选择需要进行的选项:\n\n");

									          printf("\t\t\t--------------------\n");

									          printf("\t\t\t  用 户 相 关\n");

									          printf("\t\t\t--------------------\n");

									          printf("\t\t\t●  1.修改用户名\n"); 

									          printf("\t\t\t●  2.修改密码\n"); 

									          printf("\t\t\t●  3.修改收货地址\n");

									          printf("\t\t\t●  4.修改电话号\n");

									          printf("\t\t\t●  5.查看个人信息\n");

									          printf("\t\t\t●  6.充值钱包\n");

									          printf("\t\t\t●  0.返回上一级\n");

									          LU=userread();

									          u=LU->next;

									          while(1)

									          {

									            if(strcmp(yh,u->name)==0)

									              break;

									            else

									              u=u->next;

									          }

									          while(1)

									          {

									            scanf("%d",&m);

									            if(m==1)

									            {

									              printf("请输入新的用户名：\n");

									              scanf("%s",u->name);

									            }

									            if(m==2)

									            {

									              printf("您需要输入旧的密码：\n");

									              scanf("%s",b);

									              while(strcmp(u->password,b)!=0)

									              {

									                printf("密码错误，请重新输入\n");

									                scanf("%s",b);

									                i++;

									                if(i==2)

									                {

									                  printf("您已经输错三次，请5分钟后再试");

									                  continue; 

									                }

									              }

									              printf("请输入新的密码：");

									              scanf("%s",u->password); 

									            }

									            if(m==3)

									            {

									              printf("请输入新的收货地址：");

									              scanf("%s",u->delivery); 

									            }

									            if(m==4)

									            { 

									              printf("请输入新的收货地址");

									              scanf("%s",u->number);

									            }

									            if(m==1||m==2||m==3||m==4)

									              userwrite(LU);

									            if(m==5)

									            {

									              printf("您的信息为：\n");

									              printf("姓名\t收获地址\t联系方式\n"); 

									              printf("%s\t%s\t%s\n",u->name,u->delivery,u->number);

									            }

									            if(m==6)

									            {

									              u=addmoney(u);

									              userwrite(LU); 

									            }

									            if(m==0)

									            {

									              system("cls");

									              MENU2(); 

									              break;

									            }

									          } 

									          break;

									      case 2:

									        LF=dingdanread();

									        Outputfood(LF); 

									        break;

									      case 3:

									        LF=foodread();

									        system("cls");

									        outputfood(LF);

									        p=LF->next; 

									        printf("\t●  按1购买，其他数字返回\t");

									        scanf("%d",&q);

									        if(q==1)

									        {

									          purchase();

									        }

									        else

									        {

									          system("cls");

									          MENU2();

									          continue;

									        }

									        break;

									      case 4:

									        LF=dingdanread();

									        p=LF->next;

									        i=0;     

									        printf("请输入所想修改的订单号：");

									        scanf("%d",&n);

									        while(p)

									        {

									          if(n==p->type)

									          {

									            if(strcmp(p->yonghu,yh)==0)

									            {

									              i=1; 

									              system("cls");

									              printf("\n订单信息如下：\n"); 

									              printf("\t菜名\t单价\t数量\t总价\t店铺\t用户名\t\n");

									              printf("\t%s\t%d\t%d\t%d\t%s\t%s\n\n",p->name,p->price,p->amount,p->total,p->shop,p->yonghu); 

									              printf("\t\t○  1.修改数量\n");

									              printf("\t\t○  2.删除订单\n");

									              printf("\t\t○  其他数字键返回\n"); 

									              scanf("%d",&n);

									              if(n==1)

									              {

									                end = time(NULL);

									                if((difftime(end,start))<180)

									                {

									                  printf("还没有超过三分钟，请尽快修改哦\n"); 

									                  printf("您只能修改菜的数量:");

									                  scanf("%d",&m);

									                  p->amount=m;

									                  p->total=(p->amount)*(p->price);

									                  dingdanwrite(LF);

									                  printf("\t\t√已成功修改");

									                }

									                else

									                {

									                  printf("时间超过三分钟，已配送\n");

									                  system("pause");

									                  system("cls");

									                  MENU2(); 

									                  break;

									                }

									              }

									              if(n==2)

									              {

									                deletedingdan(LF);

									                dingdanwrite(LF); 

									              }

									              else

									              {

									                system("pause");

									                system("cls");

									                MENU2();

									                break;

									              }

									            }

									            if(strcmp(p->yonghu,yh)!=0)

									            {

									              printf("\t\t×  不好意思，该订单您没有权限修改\n");

									              i=2;

									              system("pause"); 

									              system("cls");

									              MENU2(); 

									              break;

									            }

									          }

									          else

									            p=p->next;

									        }  

									        if(i==0)

									        {

									          printf("\t\t×没有改订单\n");

									          system("pause");

									          system("cls");

									          MENU2();

									          continue;

									        }  

									        break; 

									      case 5:

									        purchase();

									        break;

									      case 6:

									        system("cls");

									        printf("\n\n\n\t\t\t---------------\n");

									        printf("\t\t\t 订 单 排 序\n");

									        printf("\t\t\t---------------\n"); 

									        printf("\t\t\t△ 1.按菜名排序：\n");

									        printf("\t\t\t△ 2.按总价排序：\n");

									        printf("\t\t\t△ 0.返回\n");

									        scanf("%d",&m);

									        {

									          LF=dingdanread();

									          if(m==1)

									            dingdan_name_sort(LF);

									          if(m==2)

									            dingdan_total_sort(LF);

									          if(m==0)

									          {

									            system("cls");

									            MENU2();

									            continue;

									          }

									          system("pause");

									          system("cls");

									          MENU2();

									          continue;

									        }

									        break;

									        //dindan_name_sort(LF);

									      case 0:

									        system("cls");

									        MENU();

									        return;

									        break;

									      }

									    }

									}

									void deletefood(link_food Lf)

									{

									  int i=0;

									  food *p,*n;

									  p=Lf;

									  n=p->next;

									  char m[20];

									  char a;

									  printf("请输入你所想删除的菜名：");

									  scanf("%s",m);

									  while(n)

									  {

									    if(strcmp(m,n->name)==0)

									    {

									      if(strcmp(n->shop,dp)==0)

									      {

									        i++;

									        p->next=n->next;

									        foodwrite1(Lf);

									      }

									      else

									        printf("不好意思，您没有权限删除\n");

									      break;

									    }

									    else

									    {

									      p=p->next;

									      n=n->next;

									    }

									  }

									  if(i==0)

									  {

									    printf("没有此菜，无法删除\n");

									    return;

									  }

									}

									void MENU3_choose()

									{

									  int x,y;

									  char a[20];

									  link_food LF,Lf;

									  LF=foodread();

									  food *p;

									  while(1)

									  {

									    printf("请选择：");

									    scanf("%d",&x);

									    if(x==1)

									    {

									      creatf();

									      //foodwrite(LF);

									    }

									    if(x==2)

									    {

									      int i=0;

									      printf("请输入要修改的菜的名称：");

									      scanf("%s",a);

									      //LF=foodread();

									      p=LF->next;

									      while(p!=NULL)

									      {

									        if(strcmp(a,p->name)==0)

									        {

									          i++;

									          if(strcmp(dp,p->shop)==0)

									          {

									            printf("请重新输入菜的信息:\n");

									            printf("\t\t\t△新菜名：");

									            scanf("%s",p->name);

									            printf("\t\t\t△新菜价：");

									            scanf("%d",&p->price);

									            foodwrite1(LF); 

									          }

									          else

									            printf("不好意思，您没有权限修改\n");

									          break; 

									        }

									        p=p->next;

									      }

									      if(i==0)

									        printf("\t\t×  没有此菜的信息\n"); 

									    }

									    if(x==3)

									    {

									      deletefood(LF);

									    } 

									    if(x==4)

									    {

									      int sum=0;

									      Lf=foodread();

									      p=Lf->next;

									      system("cls");

									      printf("\n\n\t\t您家的食物如下：");

									      printf("\n\t\t----------------------------------------\n");

									      printf("\t\t菜名\t   菜价\t店铺\t  菜系\n");

									      printf("\t\t----------------------------------------\n"); 

									      while(p)

									      {

									        if(strcmp(p->shop,dp)==0)

									        {

									          printf("\t\t%-14s%-10d%-12s%s\n",p->name,p->price,p->shop,p->leibie);

									          printf("\t\t----------------------------------------\n");

									          sum=sum+1;

									        }

									        p=p->next;

									      }

									      printf("\t\t合计/个：\t\t\t%d个菜\n",sum);

									      printf("\t\t----------------------------------------\n");

									      if(sum==0)

									        printf("\t\t\t●  怪不得没订单，您还没添加菜品呢\n");

									      system("pause");

									      system("cls");

									      MENU3();

									    }

									    if(x==5)

									    {

									      LF=dingdanread();

									      scorefind(LF);//查看业绩函数

									      system("pause");

									      system("cls");

									      MENU3();

									    }    

									    if(x==0) 

									    {

									      system("cls");

									      MENU();

									      break;

									    }  

									  } 

									}

									//登陆

									void login()

									{

									  int n,i=0,j=0;

									  char a[10],c[10];

									  char b[15],d[15],f[10],e[20];

									  FILE *fp;

									  char ch;

									  system("cls"); 

									  MENU();

									  printf("请选择：");

									  while(1)

									  {

									    scanf("%d",&n);

									    //管理员登陆 

									    if(n==1)

									    {

									      printf("请输入用户名:"); 

									      scanf("%s",a);

									      printf("请输入密码:");

									      while((ch=getch())!=13){

									      if(ch==8){

									        printf("\b \b");

									        i--;

									        continue;

									      }

									      b[i++]=ch;

									      putchar('*');

									      }

									      b[i]='\0';

									      fp=fopen("admin.txt","rt");

									        if(fp==NULL)

									          printf("没有此文件，无法打开");

									      fscanf(fp,"%s %s %s %s",f,c,d,e);

									      fclose(fp);

									      while(strcmp(a,c)!=0||strcmp(b,d)!=0)

									      {

									        printf("\n账号或密码错误，请重新输入：\n");

									        printf("请输入用户名：");

									        scanf("%s",a);

									        printf("请输入密码：");

									        i=0;

									        while((ch=getch())!=13){

									        if(ch==8){

									          printf("\b \b");

									          i--;

									          continue;

									        }

									        b[i++]=ch;

									        putchar('*');

									        }

									        b[i]='\0';

									        j++;

									        if(j==2)

									        {

									          printf("\n密码错误已达三次,将自动退回主菜单\n");

									          system("pause"); 

									          system("cls");

									          MENU();

									          return;

									        }

									      }

									      system("cls");

									      //system("color 03");

									      welcome();

									      printf("\n");

									      system("pause");

									      system("cls");

									      MENU1();

									      MENU1_choose(); 

									    }

									  //用户登录 

									    if(n==2)

									    {

									      link_user LU;

									      user *p;

									      LU=userread();

									      p=LU->next;

									      printf("请输入账号或名称");

									      scanf("%s",yh);

									      printf("请输入密码：");

									      i=0;

									      while((ch=getch())!=13){

									      if(ch==8){

									        printf("\b \b");

									        i--;

									        continue;

									      }

									      b[i++]=ch;

									      putchar('*');

									      }

									      b[i]='\0';

									      int i=0;

									      while(p!=NULL)

									      {

									        if(strcmp(yh,p->name)==0&&strcmp(b,p->password)==0)

									        {

									          system("cls");

									          //system("color 0a");

									          //welcome();

									          printf("\n");

									          system("pause");

									          system("cls");

									          i++;

									          MENU2();

									          MENU2_choose();

									          break;

									        }

									        p=p->next;

									      }

									      if(i==0)

									      { 

									        printf("密码或者账号错误\n");

									        system("pause");

									        system("cls");

									        ME();

									        return;

									      }

									    }

									    if(n==3)

									    {

									      link_shop LS;

									      shop *p;

									      j=0;

									      LS=shopread();

									      p=LS->next;

									      printf("请输入店铺名称或者账号：");

									      scanf("%s",dp);

									      printf("请输入密码");

									      i=0;

									      while((ch=getch())!=13)

									      {

									        if(ch==8)

									        {

									          printf("\b \b");

									          i--;

									          continue;

									        }    

									        putchar('*');

									        b[i++]=ch;

									      }

									      b[i]='\0';

									      while(p!=NULL)

									      {

									        if(strcmp(dp,p->name)==0&&strcmp(b,p->password)==0)

									        {

									          system("cls");

									          //system("color 0a");

									          //welcome();

									          j++;

									          printf("\n");

									          system("pause");

									          system("cls");

									          MENU3();

									          MENU3_choose();

									          break;

									        }

									        else

									          p=p->next;

									      }

									      if(j==0)

									      { 

									        printf("\t\t\n×  密码或者账号错误\n");

									        system("pause");

									        system("cls");

									        ME();

									        return;

									      }

									    }

									    if(n==0)

									    {

									      system("cls");

									      ME();

									      break; 

									    }  

									  }

									}

									user * creatu()

									{

									  char a[30],b[20],c[15],d[20];

									  char ca[20],mi1[20],mi2[20];

									  link_user LU,lu;

									  FILE *fp;

									  user *s,*r,*p;

									  int x,y,i,h; 

									  LU=r=(user *)malloc(sizeof(user));

									  LU->next=NULL;

									  printf("请输入姓名：");

									  scanf("%s",a);

									  lu=userread();

									  while(1)

									  {

									    i=0;

									    p=lu->next;

									    while(p)

									    { 

									      if(strcmp(a,p->name)==0)

									      {

									        i++;

									        printf("\t\t×此用户已经有人注册过,请重新输入:");

									        scanf("%s",a);

									        break;

									      }

									      else

									        p=p->next;

									    }

									    if(i==0)

									      break;

									  }

									  printf("请输入收货地址：");

									  scanf("%s",b); 

									  printf("请输入密码：");

									  scanf("%s",c);

									  printf("请输入电话号码：");

									  scanf("%s",d); 

									  x=strlen(c);

									  while(x<8)

									  {

									    printf("\t\t●  您的密码小于8位，安全指数为低\n");

									    printf("按1修改,其他键放弃修改:");

									    scanf("%d",&y);

									    if(y==1)

									    {

									      scanf("%s",c);

									      x=strlen(c);  

									    }

									    else

									      break; 

									  }

									  if(strcmp(b,"0")!=0)

									  {

									    s=(user *)malloc(sizeof(user));

									    s->score=0;

									    strcpy(s->name,a);

									    strcpy(s->delivery,b);

									    strcpy(s->password,c);

									    strcpy(s->number,d);

									    r->next=s;

									    s->next=NULL;

									    r=s;

									    printf("为了方便充值钱包，请绑定您的银行卡：");

									    scanf("%s",ca);

									    h=strlen(ca);

									    while(h<15)

									    {

									      printf("\t\t●  您的银行卡不足15位，请重新输入：");

									      scanf("%s",ca);

									      h=strlen(ca); 

									    }

									    i=0; 

									    printf("请设置您的支付密码");

									    scanf("%s",mi1);

									    printf("请确认密码");

									    scanf("%s",mi2);

									    if(strcmp(mi1,mi2)!=0)

									    {

									      printf("\t\t×注册失败,两次密码不同");

									      return 0;

									    }

									    fp=fopen("yue.txt","at");

									    fprintf(fp,"%s %s %s\n",a,ca,mi1);

									    fclose(fp);

									  }

									  else

									  {

									    printf("\t\t×注册失败，请输入正确的收货信息：");

									    return 0;

									  }

									  return LU;  

									}

									void Register()

									{

									  int y;

									  char a;

									  FILE *fp;

									  shop sq;//申请 

									  system("cls");

									  printf("\n\n\n\t\t\t\t1.注册用户\t\t\t2.申请店铺\n");

									  printf("\t\t\t\t0.返回上一级");

									  while(1)

									  {

									    printf("\t\t▲ 请选择要进行的选项："); 

									    scanf("%d",&y);

									    if(y==1)//用户注册 

									    {

									      link_user LU;

									      LU=creatu(); 

									      userwrite2(LU);

									    }

									    if(y==2)

									    {

									      printf("请输入店铺名称：");

									      scanf("%s",sq.name);

									      printf("请输入店铺电话：");

									      scanf("%s",sq.phone);

									      printf("请输入店铺地址：");

									      scanf("%s",sq.address); 

									      printf("请输入店铺密码：");

									      scanf("%s",sq.password);

									      fp=fopen("shenqing.txt","at");

									      if(fp==NULL)

									      {

									        printf("发生错误，无法打开文件");

									        return; 

									      }

									      printf("是否保存？Y/else");

									      scanf("%*c%c",&a);

									      if(a=='Y')

									      {  

									        fprintf(fp," %s %s %s %s \n",sq.name,sq.phone,sq.address,sq.password);

									        fclose(fp);

									        printf("\t\t√  申请成功，等待上级审核"); 

									      }

									      else

									      {

									        printf("\t\t×  已放弃申请");

									        fclose(fp); 

									      }

									    }

									    if(y==0)

									    {

									      system("cls");

									      printf("\t\tWELCOME\n这里是外卖管理系统，请选择接下来的操作：");

									      printf("\n\n\t\t\t\t1.登陆");

									      printf("\t\t\t\t2.注册\n"); 

									      break;   

									    }

									  }

									}

									void choose()

									{

									  int x;

									  ME();

									  while(1)

									  {

									    scanf("%d",&x);

									    if(x==1)

									      login();

									    if(x==0)

									    {

									      Exit();

									      return;

									    }

									    if(x==2)

									      Register();

									  }

									}

									int main()

									{

									  choose(); 

									}
代码有些多，因为要用到文件以及文件交互，因此这里有整个的文件外卖管理系统。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/kiddingstreet/article/details/78258787
C语言实现外卖管理系统

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