using System;

namespace Prg6  

{

public class Customer

{

    public virtual void CustomerType()

    {

        Console.WriteLine("I am customer");

    }

}

    public class CorporateCustomer : Customer

    {

    public override void CustomerType()

    {

    Console.WriteLine("I am a Corporate customer");

    }

    }

    public class PersonaleCustomer : Customer

    {

    public override void CustomerType()

    {

    Console.WriteLine("I am a Personal customer");

    }

    }

    public class Program

    {

        public static void Main(String[] args)

        {

            Customer[] c = new Customer[3];

            c[0] = new Customer();

            c[1] = new CorporateCustomer();

            c[2] = new PersonaleCustomer();

            foreach(Customer customerobject in c)

            {

                customerobject.CustomerType();

            }

        }

    }

}