#include<stdio.h>
int runnian(int year)
{
	if ((year % 4 == 0 && year % 100 != 0)||(year%400==0))
	{
		return 1;
	}
	else
	{
		return 0;
	}
}
int main()
{
	int year = 0;
	printf("请输入年份:");
	scanf("%d", &year);
	int ret=runnian(year);
	if (ret==1)
	{
		printf("%d是闰年", year);
	}
	if (ret ==0)
	{
		printf("%d不是闰年", year);
	}
	return 0;
}