#include <stdio.h>
void main()
{
int year=0;
printf("请输入一个年份：\n");
scanf("%d",&year);
if(year%4==0&&year%100!=0)
{
printf("%d是闰年!\n",year);
}
else if(year%400==0)
{
printf("%d是闰年!\n",year);
}
else
{
printf("%d不是闰年!\n",year);
}
}