c语言：使用for循环编写一个判断闰年的程序



#include<stdio.h>
int main()
{
 int year,leap;
 for(year=1000;year<=2000;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)
  printf("%d is a leap year\n",year);
 else
  printf("%d is not a leap year\n",year);
 return 0;
}