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.
 * (Note that the program contains a logical error.)
 *
 * Author: Carsten Butz
 * 02-09-2002
 */

class Average2 {

  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.");

    do{

      input = Console.in.readDouble();
      total += input;
      count++;

    } while (input !=0);

    if(count == 0)
      System.out.println("No numbers were entered!");
    else
      {
	average = total/count;
	System.out.println("You entered " + count + " numbers.");
	System.out.println("The average of those numbers is " + average + ".");
      }


  }

}