Faktorial

import java.util.Scanner;
 
public class Faktorial{
    public static void main(String[] args){
        System.out.println("Zadej cele kladne ci­slo.");
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int f = 1;
        for(int i = x; i > 1; i--){
            f*= i;
        }
        System.out.println(f);
    }
}