From: simonh <simonharrison@...>
Date: 2006-07-19T16:55:14+09:00
Subject: Re: more newbie help with classes and methods please

Thanks for replies. Just to point out, this code is not meant for
anything in particular, just an example to help me learn ruby. I wanted
to understand recursion better which I now do. Also to understand
ranges and if statements too. What I'm trying to do here is understand
how to branch inside a method.

What are the benefits of using case instead of if? I was going to look
at case a bit later on. The commented code below is what I've tried but
it does not work too well. if i type 21 its says 'have a nice holiday!'
then 'Incorrect Input' and prompts me again.

-----------------------------------------------------------------------
def check_age
  print "Please enter your age (or type 'h' for help): "
  age = gets.chomp
  target = 18..30
  valid = /^\d{2}/
 # if age == 'h'
  #  puts
   # puts "Example: if you are twenty five, type 25"
   # puts
   # check_age
  #end

  if valid.match(age)
    if target === age.to_i
      puts 'Have a nice holiday!'
    elsif age.to_i  < 18
      puts 'Sorry, too young.'
    elsif age.to_i  > 30
      puts 'Sorry, too old.'
    end
  else
    puts "Incorrect input."
    puts
    check_age     # Try again
  end
end

check_age 
gets