using System;

​

    public class BaseClass

    {

    }

    public class ImplementingClass : BaseClass

    {

    }

​

    public class ImplementingClass2 : BaseClass

    {

    }

​

public class Program

{

    public static void Main()

    {

​

        BaseClass[] hello = new ImplementingClass2[10];

        // code missing here (feel free to add code elsewhere too)

        Bob(hello);

        Console.WriteLine("Hello World");

    }

    public static void Bob(BaseClass[] test)

    {

        if (test != null && test.Length > 0)

        {

            test[0] = new ImplementingClass();

        }

    }

}