using System;

public class Program

{

    public static void Main()

    {   

        int ? ticketforsale=10;

        int nooftickets;

        if(ticketforsale==null)

        {

            nooftickets=0;

            Console.WriteLine("nooftickets {0}",nooftickets);

        }

        else

        {

            nooftickets=ticketforsale.Value;

            Console.WriteLine("nooftickets {0}",nooftickets);

        }

    }

}