8.13.cpp

这是C++的一部分练习程序!对初学者有一定的帮助作用。

#include <iostream.h>
class Date;
class Time
{
  public:
	Time(int i,int j,int k)
	{  hour=i;minute=j;sec=k;  }
	void Print(Date &d);
  private:
	int hour,minute,sec;
};
class Date
{
public:
	Date(int i,int j,int k)
	{  year=i;month=j;day=k;  }
	friend void Time::Print(Date &d);
private:
	int year,month,day;
};
void Time::Print(Date &d)
{
	cout<<d.year<<'/'<<d.month<<'/'<<d.day<<endl;
	cout<<hour<<':'<<minute<<':'<<sec<<endl;
}
void main()
{
	Date d(2005,6,27);
	Time t(9,55,30);
	t.Print(d);
}