using System;

public class Program

{

    public static void Main()

    {

        Student a = new Student("David", 23);

        a.Speak();

    }

     class Person

    {

        protected int Age {get;set;}

        protected string Name {get;set;}

    }

     class Student:Person

    {

        public Student(string nm, int old)

        {

            Name = nm;

            Age = old;

        }

        public void Speak()

        {

            Console.WriteLine("Meine name ist "+Name+" und ich bin "+Age+" yahre alt.");

        }

    }

}