# Program to find the area of a Square

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. 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

 ` `

Output:

```16
```

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