//例子5.5 写程序，判断某一年是闰年

//例子5.5 写程序，判断某一年是闰年
#include <stdio.h>
void main()
{
    int year,leap;
    scanf("%d",&year);
    if (year%4==0)
      if(year%100==0)
        if(year%400==0)
        leap=1;
        else
        leap=0;
      else
         leap=1;
    else
        leap=0;
if(leap=1)
    printf("%d is a leap year",year);
else
    printf("%d is not a leap year",year);
}
//1、等于是==
 // 2、书上用
 //if(leap=1)
   // printf("%d is ",year);
//else
    //printf("%d is not  ",year);
//printf(" a leap year./n"); 很聪明哦 这里到第1个封号为止
//最后一行用/n可以跟press any key to continue 区分