// ****************************************************************
// Factorials.java
//
// Reads integers from the user and prints the factorial of each.
//
// ****************************************************************

import java.io.*;

public class Factorials
{
   public static void main(String[] args) throws IOException
   {
      BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));
      char keepGoing = 'y';

      while (keepGoing == 'y' || keepGoing == 'Y')
      {
         System.out.print("\nEnter an integer: ");
         int val = Integer.parseInt(keyboard.readLine());
         System.out.println("Factorial(" + val + ") = "
                            + MathUtils.factorial(val) + '\n');
         System.out.print("Another factorial? (y/n) ");
         keepGoing = (char) keyboard.read(); // read 1 character answer
         keyboard.readLine();  // read newline char
      }
   }
}