编写一个时间类,实现时间的加、减、读和输出

//编写一个时间类，实现时间的加、减、读和输出

//class.h

#include

class Time

{

public:

Time(int H=0,int M=0,int S=0)

{

hour=H;

minute=M;

second=S;

}

void SetTime();

void Display();

Time operator+(Time &);

Time operator-(Time &);

private:

int hour,minute,second;

};

//function.cpp

void Time::SetTime()

{

cin>>hour>>minute>>second;//输入时间

if(hour>24||hour<0||minute>60||minute<0||second>60||second<0)

{

cout<<"Data error!Please input again:"<

cin>>hour>>minute>>second;

}

second=(second>=0&&second<60)?second:0;//判断输入时间的显示

minute=(minute>=0&&minute<60)?minute:0;

hour=(hour>=0&&hour<24)?hour:0;

}

void Time::Display()

{

cout<

}

Time Time::operator+(Time &a)//时间的加，若超出正常范围，则进位

{

int H,M,S;

H=(a.hour+hour+(a.minute+minute+(a.second+second)/60)/60)%24;

M=(a.minute+minute+(a.second+second)/60)%60;

S=(a.second+second)%60;

return Time(H,M,S);

}

Time Time::operator-(Time &a)//时间的减，若超出正常范围，向前借位{

int H,M,S;

H=hour-a.hour;

M=minute-a.minute;

S=second-a.second;

if(S<0)

{

S=(S+60)%60;

M=M-1;

}

if(M<0)

{

M=(M+60)%60;

H=H-1;

}

if(H<0)

H=(H+24)%24;

return Time(H,M,S);

}

void main()

{

Time a,b,c;

cout<<"请输入A的时间："<

a.SetTime();

cout<<"请输入B的时间："<

b.SetTime();

cout<<"A的时间为：";

a.Display();

cout<<"B的时间为：";

b.Display();

cout<<"c=a+b=";

c=a+b;

c.Display();

cout<

c=a-b;

c.Display();

}