** Problem Statement: **Check if the given year is a leap year or not. Leap year program in C.

**Examples:**

Example 1:Input:1996Output:YesExplanation:1996 is a leap yearExample 2:Input:2000output:YesExplanation:2000 is a leap year

** Disclaimer**:

*Don’t jump directly to the solution, try it out yourself first.*

## What is Leap Year?

A leap year is an year, occurring once every four years, which has 366 days including 29 February as an intercalary day.

**Approach:**

A year is a leap year if:

- either, it is divisible by 400
- or, divisible by 4 and not divisible by 100.

So we check if the given year is

- divisible by 400 or,
- divisible 4 and not divisible by 100

**Code:**

## C Program

```
#include<stdio.h>
int yyear(int year)
{
if(year % 400 == 0)
return 1;
if(year % 100 == 0)
return 0;
if(year % 4 == 0)
return 1;
return 0;
}
int main()
{
int year=1996;
if(yyear(year))
printf("Yes, it is a leap year");
else
printf("No, it is not a leap year");
}
```

**Output:** Yes, it is a leap year

**Time Complexity:** O(1)

**Space Complexity:** O(1)

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