5.09 - Double, 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". For example.

x = 5;
Double(ref x);

would display 10


using System;

public class F_DoubleRef
    public static void Double(ref int n)
        n = n + n;
    public static void Main()
        int x = 2;
  Double( ref x );
        Console.WriteLine( x );

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