/*  LikekotlinWhen.kt  Copyright (c) Kari Laitinen

    http://www.naturalprogramming.com

    2020-10-30  File created.
  
    'when' expression in Kotlin replaces the switch-case construct that
    is common in many other languages.
  
*/

fun main()
{
   print( "\n This program uses a when expression."
       +  "\n Do you like the Kotlin programming language?"
       +  "\n Please, answer Y or N :  " )

   val character_from_keyboard  =  readLine()!![ 0 ]

   when ( character_from_keyboard )
   {
      'Y', 'y' ->
      {
         print( "\n That's nice to hear. \n" )
      }
      
      'N', 'n' ->
      {
         print( "\n That is not so nice to hear. "
             +  "\n I hope you change your mind soon.\n" )
      }
      
      else ->
      {
         print( "\n I do not understand \""
             +  character_from_keyboard   +  "\".\n" )
      }
   }
   
   print( "\n" )
}