如下所示：
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#include<iostream>using namespace std;class Date{public: Date(int year = 1900, int month = 1, int day = 1) //构造 :_year(year) , _month(month) , _day(day) { if (!isInvalidDate(_year, _month, _day)) { _year = 1900; _month = 1; _day = 1; } } Date operator+(int count) { Date tmp(*this); tmp._day += count; ToCorrect(tmp); return tmp; } Date operator-(int count) { Date tmp(*this); tmp._day -= count; ToCorrect(tmp); return tmp; } Date& operator++() //前置++ { (*this)++; return *this; } Date operator++(int) //后置++ { Date tmp(*this); (*this)+=1; return tmp; } Date& operator--() { (*this)--; return *this; } Date operator--(int) { Date tmp(*this); (*this)--; return tmp; } int operator-(const Date &d) { int flag = 1; Date max = *this; Date min = d; if (*this<d) { max = d; min = *this; flag = -1; } int count=0; while (min != max) { ++min; count++; } return count*flag; } Date& operator+=(int day) { *this = *this + day; return *this; } bool operator!=(const Date &d) { return !(*this == d); } bool operator<(const Date &d) { return !((*this>d)||(*this==d)); } bool operator>=(const Date &d) { return !(*this<d); } bool operator>(const Date &d) { return (_year > d._year || (_year == d._year && _month > d._month) || (_year == d._year && _month == d._month && _day > d._day)); } bool operator==(const Date &d) { return ((_year == d._year) && (_month == d._month) && (_day == d._day)); } public: bool IsLeapYear(int year) { if(year % 400 || (year % 4 && year % 100)) return true; return false; } int YearsOfMonth(int year, int month) { int day; int days[13] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; day = days[month]; if (month == 2) day += IsLeapYear(year); return day; } Date ToCorrect(Date &d) { if (d._day>YearsOfMonth(d._year, d._month)) { while (d._day > YearsOfMonth(d._year, d._month)) { d._day -= YearsOfMonth(d._year,d._month); if (d._month == 12) { d._year++; d._month = 1; } else { ++d._month; } } } else { while (d._day <= 0) { if (d._month == 1) { d._year--; d._month = 12; } else { --d._month; } d._day += YearsOfMonth(d._year, d._month); } } return d; } bool isInvalidDate(int year, int month, int day) { if ((year < 1) || (month<0 || month>12) || (day<0 || day>YearsOfMonth(year,month))) return false; return true; } void Display() { cout << _year << "-" << _month << "-" << _day << endl; } friend istream& operator>>(istream& is, Date &d); friend ostream& operator<<(ostream& os, const Date &d);private: int _year; int _month; int _day;};istream& operator>>(istream& is, Date& d){ cout << "请输入一个日期" << endl; is >> d._year >> d._month >> d._day; return is;}ostream& operator<<(ostream& os, const Date &d){ cout << d._year << "-" <<d. _month << "-" << d._day << endl; return os;}int main(){ /*Date d1(2016,8,18); //d1.Display(); //d1 = d1++; cout << d1 << endl;*/ //Date d1(2015, 12, 3); //(d1++).Display(); //d1.operator++(&d1, 0); //(++d1).Display(); //d1.operator++(&d1); Date d1(2015, 12, 3); Date d2(2015, 11, 1); cout << (d1 - d2) << endl; //Date d1(2015, 12, 3); //Date ret = d1 + 40; //operator+ //ret.Display(); /*Date d1(2015, 12, 3); Date ret = d1 + 40; d1 = ret; ret = d1 - 40; ret.Display();*/ /*Date ret; Date d2(2015, 1, 1); ret = d2 - 1; ret.Display();*/ return 0;} |
以上这篇C++实现日期类(Date类)的方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持服务器之家。
