Chapter 11.2, Problem 11.6CP

Explanation of Solution

Given code:

//Line 1

//Base class declaration of "Vegetable"

class Vegetable

{

  #Line 2

      #Define the virtual message() method

        public virtual void message()

        {

  //Line 3

           //Print the message

            MessageBox.Show("I'm a vegetable.");

        }

}

#Line 4   

/*Derived class declaration of "Potato" which inherits base class properties. */

class Potato : Vegetable

{

  #Line 5

      /* overrides the base class method name "message()"

      method which displays the message on the output

      screen. */

        public override void message()

        {

  //Line 6

           //Print the message

            MessageBox.Show("I'm a potato.");

        }

}

//Line 7  

/*Driver code create an object for base class */

Vegetable v = new Potato();

//Line 8

//create an object for derived class

Potato p = new Potato();

//Line 9

//call the method "message()" using base class object

v...