本文实例为大家分享了C语言基于单链表实现通讯录功能的具体代码,供大家参考,具体内容如下
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#include<stdio.h> #include<stdlib.h> #include<string.h> #pragma warning(disable:4996);//解决VS报严重性代码错误 typedef struct LNode { char name[20]; double ph_number; struct LNode* next; }LinkNode; //创建通讯录 LNode* CreateList(LNode*& L) { LNode* s, * r; int n; L = (LNode*) malloc ( sizeof (LNode)); r = L; printf ( "请输入要创建联系人的个数:" ); scanf ( "%d" , &n); printf ( "\n" ); for ( int i = 0; i < n; i++) { s = (LNode*) malloc ( sizeof (LNode)); printf ( "请输入第%d个联系人的姓名,电话:\n" , i + 1); scanf ( "%s%lf" , &s->name, &s->ph_number); printf ( "\n" ); r->next = s; r = s; } r->next = NULL; return L; } //添加联系人 void ListInsert(LNode*& L) { LNode* new_s, * r = L; while (r->next != NULL) { r = r->next; } new_s = (LNode*) malloc ( sizeof (LNode)); printf ( "请输入要添加的联系人的姓名,电话:\n" ); scanf ( "%s%lf" , &new_s->name, &new_s->ph_number); printf ( "\n" ); r->next = new_s; r = new_s; r->next = NULL; } //查找联系人 bool Locate(LNode*& L) { LNode* p = L->next; char name_[20]; printf ( "请输入要查找的联系人的姓名:\n" ); scanf ( "%s" , &name_); printf ( "\n" ); while (p != NULL && strcmp (p->name, name_) != 0) //注意判断条件 { p = p->next; } if (p == NULL) return false ; else return true ; } //修改联系人 bool ModifyList(LNode*& L) { LNode* p = L; char name_[20]; double ph_number_; printf ( "请输入要修改的联系人的姓名:\n" ); scanf ( "%s" , name_); printf ( "\n" ); while (p != NULL && strcmp (p->name, name_) != 0) //注意判断条件 { p = p->next; } if (p == NULL) return false ; else { printf ( "请输入修改后的电话号码为:\n" ); scanf ( "%lf" , &ph_number_); printf ( "\n" ); p->ph_number = ph_number_; return true ; } } //删除联系人 bool ListDelete(LNode*& L) { LNode* p = L->next, * q = L; char name_[20]; printf ( "请输入要删除联系人的姓名:\n" ); scanf ( "%s" , name_); printf ( "\n" ); while (p != NULL && strcmp (p->name, name_) != 0) //注意判断条件 { p = p->next; q = q->next; } if (p == NULL) return false ; else { q->next = q->next->next; free (p); return true ; } } //加载通讯录 void DispList(LNode* L) { int i = 0; LNode* p = L->next; while (p != NULL) { printf ( "姓名:%s 电话:%.0lf\n" , p->name, p->ph_number); p = p->next; i++; } } int main() { printf ( "*****************************************\n" ); printf ( "* *\n" ); printf ( "* 1:添加联系人 *\n" ); printf ( "* *\n" ); printf ( "* 2: 查找联系人 *\n" ); printf ( "* *\n" ); printf ( "* 3: 修改联系人 *\n" ); printf ( "* *\n" ); printf ( "* 4: 删除联系人 *\n" ); printf ( "* *\n" ); printf ( "* 5: 加载通讯录 *\n" ); printf ( "* *\n" ); printf ( "*****************************************\n" ); printf ( "\n" ); LNode* L = CreateList(L); int operand; printf ( "\n" ); for ( int i = 0; i < 5; i++) { printf ( "请输入您要执行操作的操作数:\n" ); scanf ( "%d" , &operand); switch (operand) { case 1: ListInsert(L); break ; case 2: if (Locate(L) == 1) { printf ( "找到该联系人\n" ); printf ( "\n" ); break ; } else { printf ( "未找到改联系人\n" ); printf ( "\n" ); break ; } case 3: if (ModifyList(L) == 1) { printf ( "修改成功\n" ); printf ( "\n" ); break ; } else { printf ( "修改失败\n" ); printf ( "\n" ); break ; } case 4: if (ListDelete(L) == 1) { printf ( "删除成功\n" ); printf ( "\n" ); break ; } else { printf ( "删除失败\n" ); printf ( "\n" ); break ; } case 5: DispList(L); break ; default : printf ( "ERROR!!!\n" ); } } return 0; } |
运行截图
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原文链接:https://blog.csdn.net/qq_43757941/article/details/105725509