//  MeanvalueSolution_6_8.java  Copyright (c) 2006 Kari Laitinen

//  http://www.naturalprogramming.com

//  2006-02-12   File created.
//  2006-02-12   Last modification.

import java.util.* ;

class MeanvalueSolution_6_8
{
   public static void main( String[] not_in_use )
   {
      Scanner keyboard = new Scanner( System.in ) ;

      int   integer_from_keyboard     =  0 ;
      int   number_of_integers_given  =  0 ;
      float mean_value                =  0 ;
      int   sum_of_integers           =  0 ;

      System.out.print( "\n This program calculates the mean value of"
                  +  "\n the integers you enter from the keyboard."
                  +  "\n Please, start entering numbers. The program"
                  +  "\n stops when you enter a zero. \n\n" ) ;

      do
      {
         System.out.printf( "  Current mean value: %10.3f   Enter an integer: ",
                            mean_value ) ;

         integer_from_keyboard  =  keyboard.nextInt( );

         sum_of_integers  =  sum_of_integers + integer_from_keyboard ;

         number_of_integers_given  ++  ;

         mean_value  =  (float) sum_of_integers /
                        (float) number_of_integers_given ;

      }
        while  ( integer_from_keyboard  !=  0 ) ;

   }
}