#include<stdio.h>
void main()
{   
    int year;
    printf("input years:");
    scanf("%d",&year);
    if((year%4==0&&year%100!=0)||(year%400==0))
        printf("%d is leap year",year);
}
VC6。0编辑没错，但没结果，望指点！

对，明白了，呵呵，谢谢！
重新再写了下：
 #include<stdio.h>
void main()
{
    int year,leap;

    leap=0;
    printf("input year:");
    scanf("%d",&year);
    if(year%4==0&&year%400!=0||year%400==0)
        leap=1;
    else
        leap=0;
    if(leap==1)
        printf("%d is a leap year!\n",year);
    else
       printf("%d is a not leap year!\n",year);
}
谢谢指点。

对的，谢谢你。问题解决了！