//learn inheritance at https://www.tutorialsteacher.com/csharp/inheritance

using System;

​

public class Program

{

    public static void Main()

    {

        Employee emp = new Employee();

        emp.FirstName = "Steve";

        emp.LastName = "Jobs";

        emp.EmployeeId = 1;

        emp.CompanyName = "Apple";

        Console.WriteLine(emp.GetFullName()); //base class method

        Console.WriteLine(emp.EmployeeId); 

        Console.WriteLine(emp.CompanyName); 

​

    }

}

​

class Person

{

    public string FirstName { get; set; }

    public string LastName { get; set; }

​

    public string GetFullName(){ 

        return FirstName + " " + LastName;

    }

}

​

class Employee : Person

{

    public int EmployeeId { get; set; }

    public string CompanyName { get; set; }

}