# Program to find the area of a Square

• Difficulty Level : Easy
• Last Updated : 18 Mar, 2021

What is a square ?
Square is a flat shape, in one plane, defined by four points at the four corners. A square has four sides all of equal length, and four corners, all right angles (90 degree angles). A square is a kind of rectangle but with all sides equal. Attention reader! Don’t stop learning now. Get hold of all the important mathematical concepts for competitive programming with the Essential Maths for CP Course at a student-friendly price. To complete your preparation from learning a language to DS Algo and many more,  please refer Complete Interview Preparation Course.

Formula : Examples:

```Input : 4
Output :16

Input :8
Output :64```

## CPP

 `// CPP program to find the area of a square``#include ``using` `namespace` `std;` `// function to find the area``int` `area_fun(``int` `side)``{``int` `area = side * side;``return` `area;``}` `// Driver program``int` `main()``{``int` `side = 4;``int` `area = area_fun(side);``cout << area;``return` `0;``}`

## Java

 `// Java program to find``// the area of a square` `class` `GFG``{` `// function to find the area``static` `int` `area_fun(``int` `side)``{``int` `area = side * side;``return` `area;``}` `// Driver code``public` `static` `void` `main(String arg[])``{``    ``int` `side = ``4``;``    ``int` `area = area_fun(side);``    ``System.out.println(area);``}``}` `// This code is contributed``// by Anant Agarwal.`

## Python3

 `# Python program to find``# the area of a square` `# function to find the area``def` `area_fun(side):``    ``area ``=` `side ``*` `side``    ``return` `area` `# Driver program``side ``=` `4``area ``=` `area_fun(side)``print` `(area)` `# This Code is Contributed``# by Azkia Anam.`

## C#

 `// C# program to find``// the area of a square``using` `System;` `class` `GFG {` `    ``// function to find the area``    ``static` `int` `area_fun(``int` `side)``    ``{``        ``int` `area = side * side;``        ``return` `area;``    ``}` `    ``// Driver code``    ``public` `static` `void` `Main()``    ``{``        ``int` `side = 4;``        ``int` `area = area_fun(side);``        ``Console.WriteLine(area);``    ``}``}` `// This code is contributed by vt_m.`

## PHP

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## Javascript

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Output:

`16`

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