C# Program to Illustrate Multilevel Inheritance with Virtual Methods

    /*

     * C# Program to Illustrate Multilevel Inheritance with Virtual Methods

     */

    using System;

    public class Person

    {

        protected string RNO = "44";

        protected string name = "Ram";

        public virtual void GetInfo()

        {

            Console.WriteLine("Name: {0}", name);

            Console.WriteLine("RNO: {0}", RNO);

            Console.WriteLine();

        }

    }

    class Student : Person

    {

        public string id = "ABC";

        public override void GetInfo()

        {

            base.GetInfo();

            Console.WriteLine("Student ID: {0}", id);

        }

    }

    class Stud : Student

    {

        private string StudentAddress = "USA";

        public void GetInfo()

        {

            base.GetInfo();

            Console.WriteLine("Student Address: {0}", StudentAddress);

        }

    }

    class TestClass

    {

        public static void Main()

        {

            Student E = new Student();

            E.GetInfo();

            Stud Stud = new Stud();

            Stud.GetInfo();

            Console.ReadLine();

        }

    }

Here is the output of the C# Program:

Name : Ram
RNO : 44

Student ID : ABC
Name : Ram
RNO : 44

Student ID : ABC
Student Address : USA