第三章 第10题

#include <iostream>

using namespace std;

class Date;

class Time

{public:

Time(int,int,int);

friend void display(const Date &,const Time &);

private:

int hour;

int minute;

int sec;

};

Time::Time(int h,int m,int s)

{hour=h;

minute=m;

sec=s;

}

class Date

{public:

Date(int,int,int);

friend void display(const Date &,const Time &);

private:

int month;

int day;

int year;

};

Date::Date(int m,int d,int y)

{month=m;

day=d;

year=y;

}

void display(const Date &d,const Time &t)

{

cout<<d.month<<"/"<<d.day<<"/"<<d.year<<endl;

cout<<t.hour<<":"<<t.minute<<":"<<t.sec<<endl;

}

int main()

{

Time t1(10,13,56);

Date d1(12,25,2004);

display(d1,t1);

return 0;

}