leap_year.c

#include <stdio.h>

int main()
{
    int year;
    scanf("%d", &year);

    if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0)
        printf("%d is leap year\n", year);
    else
        printf("%d is not leap year\n", year);

    return 0;
}