using System;

public class Osoba

{

    private int a;

    public int A

    {

        get { return a; }

        set {

              if (value>40)

              {

                 throw new InvalidOperationException ("Broj mora da bude < 40");

              }

            a = value;

        }

     }

  }

public class Program

{

 public static void Main()

 {

  Osoba radnik = new Osoba();

  radnik.A = 39;

  Console.WriteLine(radnik.A);

 }

}

​

​