#include<stdio.h>
#include<stdlib.h>
int main( void )
{
int year,leap;
printf("请输入年份:");
scanf("%d",&year);
if (year%4==0 && year%100!=0) || (year%400==0)
leap=1;
else
leap=0;
if(leap)
printf("%d 是",year);
else
printf("%d 不是",year);
printf("闰年\n");
system("pause");
return 0;
}