# 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, ..
```

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

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

 ` `

Output:

```19
```

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Improved By : ihritik, inderDuMCA