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# Program for n-th odd number

• Last Updated : 23 Apr, 2021

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 ``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

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## Javascript

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Output:

`19`

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