//  Whilesum.kt  Copyright (c) Kari Laitinen

//  http://www.naturalprogramming.com

//  2020-10-27  File created.

fun main()
{
   var  integer_from_keyboard  =  -1
   var  sum_of_integers        =   0

   print( "\n This program calculates the sum of the integers"
        + "\n you type in from the keyboard. By entering a"
        + "\n zero you can terminate the program. \n\n" )

   while ( integer_from_keyboard  !=  0 )
   {
      print(  String.format( "  Current sum: %8d    Enter an integer: ",
                             sum_of_integers  ) )

      integer_from_keyboard = readLine()!!.toInt()

      sum_of_integers  =  sum_of_integers + integer_from_keyboard
   }

   print( "\n" )
}