Factorial 4<n<16

dz3_5.java

package com.gmail.sergaav.dz3_5;
import java.util.Scanner;
public class dz3_5 {

	public static void main(String[] args) {
		double n;
		double fact=1;
		int i;
		Scanner sc = new Scanner (System.in);
		System.out.println("Input a:");
		n=sc.nextDouble();
		if (n>4 && n<16){
			for (i=1;i<=n;i++){
				fact=fact*i;
			}
			System.out.println(fact);
		}else System.out.println("A must be 4<n<16");
		
		sc.close();
		
		
	}

}