/**
  * @author  mh
  * @version 1.01
  * @date 14.05.2012
  * @class fakultaet
  */
  
import java.util.Scanner;
class Fak {

public static void main(String[] args) { 

	System.out.println(".. begin of fakultaet ..\n");
	Scanner in = new Scanner(System.in);
	int z = getInt("Von welchem Wert n wollen Sie n! berechnen: ");
	System.out.println("n: "+z+"  n!: "+ itFak(z));
    	System.out.println("\n.. end of fakultaet ..");
	
} // main	


// iterativer Algm
static int itFak(int n) {
	int f = 1;
	for (int i= 1;i<=n;i++) {
		f = f*i;
	} //for
	return f;
} // itFak


// Vereinfachung der Eingabe

static int getInt(String message) {
	Scanner in = new Scanner(System.in);
	System.out.print(message);
	return in.nextInt();
} // getInt


} // Fakultaet