using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    string[] usernames  = new string[4];// initialising array

        usernames[0] = "Arthur";// first element

        usernames[1] = "Elizabeth"; // second element

        usernames[2] = "William"; // third element

        usernames[3] = "Suzanne"; // fourth element

    }

}