import tio.*; // import package to read from keyboard

/* Program to read numbers from the keyboard and 
 * print out the average.
 * The average is calculated once the sentenel 0
 * is entered.
 *
 * Author: Carsten Butz
 * 02-09-2002
 */

class Average {

  public static void main (String[] args){

    double input;
    int count = 0;
    double total = 0;
    double average;
     
    System.out.println("Please enter the numbers.");
    System.out.println("Use the sentinel 0 to calculate the average.");

    input = Console.in.readDouble();

    while (input != 0)
      {
      total += input;
      count++;
      input = Console.in.readDouble();      
      }

    average = total/count;

    System.out.println("You entered " + count + " number(s).");
    System.out.println("The average of those numbers is " + average + ".");
    


  }

}