编辑代码

#include <stdio.h>
void main () 
{
    int year,a;
    scanf("%d",&year);
    if(year%4==0&&year%100!=0||year%400==0) 
     a=1;
    else
     a=0;                           
    if(a==1)
     printf("%d年是闰年。",year);  
	    else
     printf("%d年不是闰年。",year);                
}