ex3_1.cpp

纯粹是学习专用～

#include <iostream.h>
void main( ){
	int year;
	cout<<"输入年份:"<<endl;
	cin>>year;
	if (year%4==0&&year%100!=0||year%400==0)	cout<<year<<"是润年"<<endl;
	else  cout<< year<<"不是润年"<<endl;
}