using System;
class Massiiv5{
   static void tryki(int[] mas){
      for(int i=0; i<mas.Length; i++){
         Console.WriteLine(mas[i]);
      }
      Console.WriteLine();
   }
   public static void Main(string[] arg){
      int[] m=new int[3]{40, 48, 33};
      int[] m2=m; //Viide samale massiivile
      tryki(m2);
      m[1]=32;
      tryki(m2);
      int[] m3=(int[])m.Clone(); //Andmete koopia
      m[1]=20;
      tryki(m3);
      Array.Clear(m3, 0, m3.Length); //Tühjendus
      tryki(m3);
      Console.WriteLine(Array.IndexOf(m,33));
      Console.WriteLine(Array.IndexOf(m,17)); //puuduv element
   }
}

/*
C:\Projects\oma\naited>Massiiv5
40
48
33

40
32
33

40
32
33

0
0
0

2
-1
*/