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Program 2

using System;

public class app {

  public static void Main(){

    Interval iv1 = new Interval(16, 4),
             iv2 = new Interval(10,38),
             iv3 = iv1 & iv2;

    if (iv3.Empty)
      Console.WriteLine("iv3 is empty");
    else
      Console.WriteLine("iv3 is NOT empty");

    Console.WriteLine("{0}, {1}, {2}, {3}", iv3.From,  iv3.To,  iv3.Length, iv3.Empty);  

    foreach(int k in iv3){
      Console.Write("{0,4}", k);
    }
    Console.WriteLine();

  }

}