操作符重载例子-日期类，实现>,+日期,+天,后置++,四种运算符，写出主函数测试，上传代码和运行截图。 class CDate{ private: int year; int month; int day; public: CDate(int y, int m, int d); void print( ); bool operator > (CDate &t); CDate operator+(CDate &r); CDate operator+(int d); CDate operator++(int); //后置++ };

好的，下面是我为您编写的代码：

#include <iostream>
using namespace std;

class CDate{
private:
    int year;
    int month;
    int day;
public:
    CDate(int y, int m, int d){
        year = y;
        month = m;
        day = d;
    }
    void print(){
        cout << year << "-" << month << "-" << day << endl;
    }
    bool operator > (CDate &t){
        if (year > t.year)
            return true;
        else if (year == t.year && month > t.month)
            return true;
        else if (year == t.year && month == t.month && day > t.day)
            return true;
        else
            return false;
    }
    CDate operator+(CDate &r){
        int y = year + r.year;
        int m = month + r.month;
        int d = day + r.day;
        if (d > 30){
            d -= 30;
            m++;
        }
        if (m > 12){
            m -= 12;
            y++;
        }
        CDate result(y, m, d);
        return result;
    }
    CDate operator+(int d){
        int y = year;
        int m = month;
        int temp = day + d;
        while (temp > 30){
            temp -= 30;
            m++;
            if (m > 12){
                m -= 12;
                y++;
            }
        }
        CDate result(y, m, temp);
        return result;
    }
    CDate operator++(int){
        day++;
        if (day > 30){
            day -= 30;
            month++;
            if (month > 12){
                month -= 12;
                year++;
            }
        }
        return *this;
    }
};

int main(){
    CDate d1(2021, 1, 1);
    CDate d2(2022, 2, 2);
    CDate d3 = d1 + d2;
    CDate d4 = d1 + 100;
    d1.print();
    d2.print();
    d3.print();
    d4.print();
    if (d2 > d1)
        cout << "d2 is later than d1" << endl;
    d2++;
    d2.print();
    return 0;
}

运行截图如下：