Function with reference parameters

Create a function named Double to calculate the double of an integer number, and modify the data passed as an argument. It must be a void function and you must use refererence parameters.

Input

4

Output

8

Solution

using System;
public class FunctionReferenceParams
{
    public static void Main(string[] args)
    {
        int number = Convert.ToInt32(Console.ReadLine());

        Double(ref number);
        Console.WriteLine(number);
    }

    public static void Double(ref int number)
    {
        number += number;
    }
}