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Intro

Given a year, report if it is a leap year.

The tricky thing here is that a leap year in the Gregorian calendar occurs:

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on every year that is evenly divisible by 4
  except every year that is evenly divisible by 100
    unless the year is also evenly divisible by 400

Task

For example, 1997 is not a leap year, but 1996 is. 1900 is not a leap year, but 2000 is.

The Code

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#include "leap.h"
#include <stdbool.h>

bool leap_year(int year) {

    if (((year % 4) == 0 && (year % 100) != 0) || (year%400)==0)
        return true;

    return false;
}

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#ifndef LEAP_H
#define LEAP_H

#include <stdbool.h>

bool leap_year(int year);

#endif
Last update: February 1, 2021

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