C语言 ----- 利用函数实现判断某一年是否为闰年

#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>

#include <stdlib.h>

int leapyear(int year) {

    if (year % 400 == 0)

    {

         printf("是闰年\n");

    }

    else

         if (year % 4 == 0 && year % 100 != 0)

         {

             printf("是闰年\n");

         }

         else {

             printf("不是闰年\n");

         }

    return 0;

}

int main(){

         int year;

         int ret = 0;

         printf("请输入您要判断的年份\n");

         scanf("%d", &year);

         ret = leapyear(year);

    system("pause");

    return 0;

}