From: Jan_K <non@...>
Date: 2006-04-03T09:08:44+09:00
Subject: Re: Learn to Program, by Chris Pine

Chapter 9, exercise 1 (page 76)

"Fix up the ask method. That ask method I showed you was alright,
but I bet you could do better. Try to clean it up by removing the
variables good_answer and answer. You�ll have to use return to
exit from the loop. (Well, it will get you out of the whole method,
but it will get you out of the loop in the process.) How do you
like the resulting method? I usually try to avoid using return
(personal preference), but I might make an exception here."


Solution:

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def ask question
  while true
    puts question
    reply = gets.chomp.downcase
    if reply == 'yes'
      return true 
    elsif reply == 'no'
      return false
    else
      puts 'Please answer "yes" or "no".'    
    end
  end
end

puts 'Hello, and thank you for...'
puts
ask 'Do you like eating tacos?' 
ask 'Do you like eating burritos?' 
wets_bed = ask 'Do you wet the bed?' 
ask 'Do you like eating chimichangas?'
ask 'Do you like eating sopapillas?'
puts 'Just a few more questions...'
ask 'Do you like drinking horchata?'
ask 'Do you like eating flautas?'
puts
puts 'DEBRIEFING:'
puts 'Thank you for...'
puts
puts wets_bed
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