C++ 运算符重载operator

//MyTime.h
#ifndef MYTIME_H_
#define MYTIME_H_

class Time
{
private:
	int hours;
	int minutes;
public:
	Time();
	Time(int h, int m = 0);
	void AddMin(int m);
	void AddHr(int h);
	void Reset(int h = 0, int m = 0);
	Time operator+(const Time& t)const;
	void Show()const;
};
#endif

//MyTime.cpp
#include "MyTime.h"
#include <iostream>
using namespace std;

Time::Time()
{
	hours = minutes = 0;
}

Time::Time(int h, int m)
{
	hours = h;
	minutes = m;
}

void Time::AddMin(int m)
{
	minutes += m;
	hours += minutes / 60;
	minutes %= 60;
}

void Time::AddHr(int h)
{
	hours += h;
}

void Time::Reset(int h, int m)
{
	hours = h;
	minutes = m;
}

Time Time::operator+(const Time & t) const
{
	Time sum;
	sum.minutes = minutes + t.minutes;
	sum.hours = hours + t.hours + sum.minutes / 60;
	sum.minutes %= 60;
	return sum;
}

void Time::Show() const
{
	cout << hours << " hours, " << minutes << " minutes";
}

int main()
{
	Time planning;
	Time coding(2, 40);
	Time fixing(5, 55);
	Time total;
	//total = coding.operator+(fixing);//原本的调用方式
	total = coding + fixing;//使用operator+()后，可以使用运算符表示法
	total.Show();
	system("pause");
	return 0;
}