using System;

public class Person

{

    protected string name;

    protected int age;

    protected string email;

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

    {

        this.name = name;

        this.age = age;

        this.email = email;

    }

    public static void PrintInfo()

    {

        Console.WriteLine("Name:{0} Age:{1} Email:{2}", name, age, email);

    }

}

    class Student : Person

    {

    protected string clas;

    protected int nomer;

    public Student(string name,int age,string email,string clas,int nomer) : base(name,age,email)

    {

      this.nomer = nomer;

      this.clas = clas;

    }

    public void PrintInfo1()

    {

      base.PrintInfo();

      Console.WriteLine ("Clas:{0} Nomer: {1} ", clas, nomer);

    }

}

     public class Program

     {

         public static void Main()

         {

             Person p = new Person("Петър Петров", 17, "pp@mail.bg");

​

              p.PrintInfo();

              Console.WriteLine();

              Student st = new Student("Иван Петров", 17, "iv@mail.bg", "11a",13);

              st.PrintInfo1();

         }

     }