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