startup classage expr6 {
   main(String[] args) {
     create X();
   }
}


classage X {

  X() {
    int x;

    print("initially, the local field l is " + ::l);

    x = ::t(5);
    print("The fibonacci number of 5 is " + x);

    ::l = ::t2(5);
    print("The local field l is currently " + ::l);



  }

  int l = 0;

  int t(int x) {
     if (x == 0) return 0;
     if (x == 1) return 1;
     if (x == 2) return 1;

     return ::t(x-1) + ::t(x-2);
  }


  int t2(int x) {

         return 2*(::t(x));
  }



}