A 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.

**Examples :**

Input : 4 Output :16 Input :8 Output :64

**Formula**

## C++

`// CPP program to find` `// the area of the square` `#include <iostream>` `using` `namespace` `std;` `int` `areaSquare(` `int` `side)` `{` ` ` `int` `area = side * side;` ` ` `return` `area;` `}` `// Driver Code` `int` `main()` `{` ` ` `int` `side = 4;` ` ` `cout << areaSquare(side);` ` ` `return` `0;` `}` |

## Java

`// Java program to find` `// the area of the square` `import` `java.util.*;` `class` `GFG` `{` ` ` `static` `int` `areaSquare(` `int` `side)` ` ` `{` ` ` `int` `area = side * side;` ` ` `return` `area;` ` ` `}` ` ` ` ` `// Driver Code` ` ` `public` `static` `void` `main(String[] args)` ` ` `{` ` ` `int` `side = ` `5` `;` ` ` `System.out.println(areaSquare(` `4` `));` ` ` `}` `}` |

## Python3

`# Python3 code to find` `# the area of the square` `def` `areaSquare( side ):` ` ` `area ` `=` `side ` `*` `side` ` ` `return` `area` `# Driver Code` `side ` `=` `4` `print` `(areaSquare(side))` `# This code is contributed` `# by "Sharad_Bhardwaj".` |

## C#

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

## PHP

`<?php` `// PHP program to find` `// the aria of the square` `function` `areaSquare(` `$side` `)` `{` ` ` `$area` `= ` `$side` `* ` `$side` `;` ` ` `return` `$area` `;` `}` `// Driver Code` `$side` `= 4;` `echo` `(areaSquare(` `$side` `));` `// This code is contributed by Ajit.` `?>` |

## Javascript

`<script>` `// Javascript program to find` `// the area of the square` `function` `areaSquare(side)` `{` ` ` `let area = side * side;` ` ` `return` `area;` `}` `// Driver Code` ` ` `let side = 4;` ` ` `document.write(areaSquare(side));` `// This code is contributed by Mayank Tyagi` `</script>` |

**Output :**

16

This article is contributed by **Ajay Puri**. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above..

Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the **DSA Self Paced Course** at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more, please refer **Complete Interview Preparation Course****.**

In case you wish to attend live classes with industry experts, please refer **Geeks Classes Live**