INHERITANCE

Two types:-Single level & Multilevel

There is a class & a child class. A class can access the result from child class.

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ConsoleApplication1

{

    class Program

    {

        class student

        {

            int rno;

            string name, address;

            public void getdata(int r, string n, string add)

            {

                rno = r;

                name = n;

                address = add;

            }

            public void display()

            {

                Console.WriteLine("ROLL NUMBER: "+rno.ToString());

                Console.WriteLine("Name: " + name);

                Console.WriteLine("Address: " + address);

            }

        }

        class accadamic : student

        {

            int rollno, mark1, mark2, total;

            public void getmarks(int r, int m1, int m2)

            {

                rollno = r;

                mark1 = m1;

                mark2 = m2;

            }

            public void result()

            {

                Console.WriteLine("Mark1: " + mark1.ToString());

                Console.WriteLine("Mark2: " + mark2.ToString());

                total = mark1 + mark2;

                Console.WriteLine("Total marks: " + total.ToString());

            }

        }

        static void Main(string[] args)

        {

            accadamic acd = new accadamic();

            Console.WriteLine("enter rollno,name,address");

            acd.getdata(Convert.ToInt16(Console.ReadLine()), Console.ReadLine(), Console.ReadLine());

            Console.WriteLine("enter marks");

            acd.getmarks(Convert.ToInt16(Console.ReadLine()),Convert.ToInt16(Console.ReadLine()),Convert.ToInt16(Console.ReadLine()));

            acd.display();

            acd.result();

            Console.WriteLine("end");

            Console.ReadLine();

        }

    }

}