例4.5.cpp

铁道出版社出版的C++的习题源代码

#include<iostream.h>
class Time
{
public:
	Time(){minute=0;sec=0;}
	Time(int m,int s):minute(m),sec(s){}
	Time operator++();
	void display(){cout<<minute<<":"<<sec<<endl;}
private:
	int minute;
	int sec;
};
Time Time::operator++()
{
	if(++sec>=60)
	{
		sec-=60;
		++minute;
	}
	return *this;
}
int main()
{
	Time time1(34,0);
	for(int i=0;i<61;i++)
	{
		++time1;
		time1.display();
	}
	return 0;
}