判断平年闰年

<pre name="code" class="cpp">#include <stdio.h>
int main()
{
int year;
printf("please enter year:");
scanf("%d",&year);
if((year%4==0&&year%100!=0)||(year%400==0))
printf("The year %d is a leap year.\n",year);
else
printf("The year %d isn't a leap year.\n",year);
return 0;
}