#include <iostream.h>

class Date{

protected:

int year;

int month;

int day;

bool Isleapyear;

public:

Date(){};//构造函数无返回类型

Date(int year,int month,int day);

~Date(){};//析构函数无返回类型

int &GetYear(){return year;}

int &GetMonth(){return month;}

int &GetDay(){return day;}

void panduan(){Isleapyear=false;//平年闰年判断函数

if(year%100==0)

{if(year%400==0) Isleapyear=true;}

else {if(year%4==0) Isleapyear=true;} ;

if(Isleapyear==true) cout<<"\n该年是闰年";

else cout<<"\n该年是平年";

}

};

Date::Date(int year,int month,int day){

(*this).year=year;

(*this).month=month;

(*this).day=day;

}

void main(){

int year,month,day;

cin>>year>>month>>day;

Date mydate(year,month,day);

int &myyear=mydate.GetYear();

int &mymonth=mydate.GetMonth();

int &myday=mydate.GetDay();

cout<<myyear<<endl<<mymonth<<endl<<myday<<endl;

mydate.panduan();

}

测试通过，运行如下：

2000

12

2

该年是闰年