class Fibonacci {
  def fibo(n:Int) : Int = {
    var res : Int = 1;
    if(n > 1) { set res = this.fibo(n-2) + this.fibo(n-1); }
    return res
  };
}

{
  var fib: Fibonacci = new Fibonacci();
  printInt(fib.fibo(9));
  printChar(10);
}