// Test program #3
// Factorial.txt - Recursive factorial.
// Print n! where n is read in from the user.

public class Factorial{

  public Factorial(){
    super();
  }

  public int fact(int n) {
    if (!(n >1))
      return 1;
    else
      return (n* this.fact(n-1));
  }

  public static void main() {
    Factorial f;
    JFSystem sys;
    int x, fact;
    sys = new JFSystem();
    f = new Factorial();

    x = sys.get();
    fact = f.fact(x);
    (sys).put(fact);
  }
}