判断闰年

#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
  int nian;
  scanf("%d", &nian);
  if (nian % 4 == 0 && nian % 100 != 0 || nian % 400 == 0)
    printf("是闰年%d\n", nian);
  else
    printf("不是闰年%d\n", nian);
  return 0;
}