using System;

public class Program

{

    public static void Main()

    {

        Instrument[] instruments = new Instrument[6];

        instruments[0] = new Hammer();

        instruments[1] = new Hammer();

        instruments[2] = new Saw();

        instruments[3] = new Saw();

        instruments[4] = new Skrew();

        instruments[5] = new Skrew();

        foreach (Instrument instrument in instruments)

        {

            System.Console.WriteLine(" **** Instrument derived class name is  {0} ****", instrument.GetType().Name);

        }

    }

}

​

public class Instrument

{

}

​

public class Hammer : Instrument

{

}

​

public class Saw : Instrument

{

}

​

public class Skrew : Instrument

{

}