using System; 

​

namespace MyApplication 

{

    class Person 

    {

        public string name;

        public int age; 

        public string address; 

        public Person(string name , int age , string address ) 

        { 

            this.name = name; 

            this.age = age;

            this.address = address;

        } 

        public virtual void introduce() 

        { 

            Console.WriteLine(" Hi, my name is " + (this.name) + " and I am " + (this.age) + " years old. I live at " + (this.address)) ; 

        }

    }

​

        public class Program 

        {

        public static void Main(string[] args) 

            {

                Employee myobj = new Employee("Ajay" , 38  , "devloper", "ahmedabad"); 

                myobj.introduce();

            }

        }

    class Employee:Person 

    {

        public string jobtitle;

          public Employee(string name , int age ,  string address , string jobtitle) : base(name,age,address)

        {

            this.jobtitle = jobtitle;

​

        }

        public override void introduce() 

        { 

            Console.WriteLine(" Hi, my name is " + (this.name) + " and I am " + (this.age) + " years old. I am " + (this.jobtitle) +"I live at " + (this.address)) ; 

        }

    }

    }