using System;

public class Person

{

    //pola klasy:

    public string FirstName;

    public int age;22

    public void DoWork()

    {

        Console.WriteLine ($"Person.{FirstName} pracuje");

    }

}

​

    public class Student: Person

{

        Console.WriteLine ($"Student: {FirstName} pracuje");

    }

override class Teacher: Person

{

        Console.WriteLine ($"Teacher: {FirstName} pracuje");

    }

    public class

    public class Program

{

        public static void Main()

{

        Student s1= new Student();

        s1.FirstName= "Wojtek";

            s1.DoWork();

        Teacher t1= new Teacher();

        t1.FirstName= "Kazimierz";

            t1.DoWork();

            s1= t1;

            s1.DoWork();

    } 

    } 

​