自增自减运算符重载

/***
addMyself.cpp
***/
#include<iostream>
using namespace std;

class Time
{
    private:
        int hours;
        int minutes;
    public:
        Time()
        {
            hours = 0;
            minutes = 0;
        }
        Time(int h,int m)
        {
            hours = h;
            minutes = m;
        }

        void displayTime()
        {
            cout << "H: " << hours << " M" << minutes << endl;
        }
        //重载前缀递增运算符
        Time operator++()
        {
            ++minutes;
            if(minutes >= 60)
            {       
                ++hours;
                minutes -= 60;
            }
            return Time(hours,minutes);
        }
        //重载后缀递增运算符
        Time operator++(int)
        {
            Time T(hours,minutes);
            ++minutes;
            if(minutes >= 60)
            {
                ++hours;
                minutes -= 60;
            }
            return T;
        }
};

int main()
{
    Time T1(11,59),T2(10,40);

    ++T1;
    T1.displayTime();
    ++T1;
    T1.displayTime();

    T2++;
    T2.displayTime();
    T2++;
    T2.displayTime();
    return 0;
}

/***
addOver.cpp
***/
#include<iostream>
using namespace std;

class Check
{
    private:
        int i;
    public:
        Check():i(0){};
        Check operator++ ()
        {
            Check temp;
            temp.i = ++i;
            return temp;
        }

        Check operator ++ (int)
        {
            Check temp;
            temp.i = i++;
            return temp;
        }

        void Display()
        {
            cout << "i = " << i << endl;
        }
};

int main()
{
    Check obj1,obj;
    obj.Display();
    obj1.Display();

    obj1 = ++ obj;
    obj.Display();
    obj1.Display();

    obj1 = obj++;
    obj.Display();
    obj1.Display();
    
    return 0;
}