7.cpp

一、教学目的： 能理解C++中运算符重载的需要性

#include<iostream.h> 
         
class Tdate
{
public:
	Tdate();
	Tdate(int d);
	Tdate(int m,int d);
	Tdate(int m,int d,int y);
	//其他公共成员
protected:
	int month;
	int day;
	int year;
};
Tdate::Tdate()
{
	month=4;	day=15;	year=1995;
	cout<<month<<"/"<<day<<"/"<<year<<endl;
}
Tdate::Tdate(int d)
{
	month=4;	day=d;	year=1996;
	cout<<month<<"/"<<day<<"/"<<year<<endl;
}
Tdate::Tdate(int m,int d)
{
	month=m;	day=d;	year=1997;
	cout<<month<<"/"<<day<<"/"<<year<<endl;
}
Tdate::Tdate(int m,int d,int y)
{
	month=m;	day=d;	year=y;
	cout<<month<<"/"<<day<<"/"<<year<<endl;
}

void main()
{
	Tdate aday;
	Tdate bday(10);
	Tdate cday(2,12);
	Tdate dday(1,2,1998);
	return;
}