mytime.h

我学习C++ Primer Plus过程中写下的课后作业的编程代码

// mytime.h -- Time class with friends
#ifndef MYTIME_H_
#define MYTIME_H_
#include <iostream>

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 );
	friend Time operator + ( const Time & t1, const Time & t2 );// 加const后不行了
	friend Time operator - ( const Time & t1, const Time & t2 );
	friend Time operator * ( const Time & t, double n );
	friend Time operator * ( double n , const Time & t );
	friend std::ostream & operator << ( std::ostream & os, const Time & t );
};

#endif