#include<stdio.h>
int is_leap_year(int y)
{
if (y % 4 == 0 && y % 100 != 0 || y % 400 == 0)
{
return 1;
}
else
return 0;
}
int main()
{
int year = 0;
for (year = 1000; year <= 2000; year++)
{
if (is_leap_year(year) == 1)
printf("%d is leap year\n", year);
}
return 0;
}
