Before going to the program first let us understand what is a Leap Year?

**Leap Year:**

A *Leap Year* is a year that is exactly divisible by four, except for years that are exactly divisible by 100, but the century years are leap years if they are exactly divisible by 400.

**Example: **The **century years** like **1600, 2000 **and** 2400** are **Leap Years** since they are **divisible by 400.**

The **century years** like **1700, 1900 **and** 2100** are **Not Leap Years** since they are **not divisible by 400.**

The years like **2016, 2020 **and** 2024** are **Leap Years** since they are **divisible by 4** but **not divisible by 100.**

The years like **2017, 2021 **and** 2029** are **not Leap Years** since they are **not divisible by 4**.

## Program code to Check Leap Year or Not:

#include<stdio.h> #include<conio.h> void main() { int year; clrscr(); printf ("n Enter a year: "); scanf ("%d", &year); // If-Else-If Conditions to Check Leap Year or Not if (year%400 == 0) printf("n It is a LEAP YEAR."); else if (year%4==0 && year%100!=0) printf("n It is a LEAP YEAR."); else printf ("n It is Not a LEAP YEAR."); getch(); }