# Program for n-th odd number

Given a number n, print the nth odd number. The 1st odd number is 1, 2nd is 3, and so on.**Examples:**

Input : 3 Output : 5 First three odd numbers are 1, 3, 5, .. Input : 5 Output : 9 First 5 odd numbers are 1, 3, 5, 7, 9, ..

The nth odd number is given by the formula 2*n-1.

## C++

`// CPP program to find the nth odd number` `#include <bits/stdc++.h>` `using` `namespace` `std;` `// Function to find the nth odd number` `int` `nthOdd(` `int` `n)` `{` ` ` `return` `(2 * n - 1);` `}` `// Driver code` `int` `main()` `{` ` ` `int` `n = 10;` ` ` `cout << nthOdd(n);` ` ` `return` `0;` `}` |

## Java

`// JAVA program to find the nth odd number` `class` `GFG` `{` ` ` `// Function to find the nth odd number` ` ` `static` `int` `nthOdd(` `int` `n)` ` ` `{` ` ` `return` `(` `2` `* n - ` `1` `);` ` ` `}` ` ` ` ` `// Driver code` ` ` `public` `static` `void` `main(String [] args)` ` ` `{` ` ` `int` `n = ` `10` `;` ` ` `System.out.println(nthOdd(n));` ` ` ` ` `}` `}` `// This code is contributed` `// by ihritik` |

## Python3

`# Python 3 program to find the` `# nth odd number` `# Function to find the nth odd number` `def` `nthOdd(n):` ` ` `return` `(` `2` `*` `n ` `-` `1` `)` ` ` ` ` `# Driver code` `if` `__name__` `=` `=` `'__main__'` `:` ` ` `n ` `=` `10` ` ` `print` `(nthOdd(n))` `# This code is contributed` `# by ihritik` |

## C#

`// C# program to find the nth odd number` `using` `System;` `class` `GFG` `{` ` ` `// Function to find the nth odd number` `static` `int` `nthOdd(` `int` `n)` `{` ` ` `return` `(2 * n - 1);` `}` `// Driver code` `public` `static` `void` `Main()` `{` ` ` `int` `n = 10;` ` ` `Console.WriteLine(nthOdd(n));` `}` `}` `// This code is contributed` `// by inder_verma` |

## PHP

`<?php` `// PHP program to find the` `// Nth odd number` `// Function to find the` `// Nth odd number` `function` `nthOdd(` `$n` `)` `{` ` ` `return` `(2 * ` `$n` `- 1);` `}` `// Driver code` `$n` `= 10;` `echo` `nthOdd(` `$n` `);` `// This code is contributed` `// by inder_verma` `?>` |

## Javascript

`<script>` `// Javascript program to find the nth odd number` `// Function to find the nth odd number` `function` `nthOdd(n)` `{` ` ` `return` `(2 * n - 1);` `}` `// Driver code` `var` `n = 10;` `document.write( nthOdd(n));` `</script>` |

**Output:**

19

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