From: Rodrigo Bermejo <rodrigo.bermejo@...>
Date: 2009-10-11T01:28:03+09:00
Subject: Re: Trouble with local variables

Severin Newsom wrote:
> Hello everyone!
> I've been coding with Ruby for about three days, and I just ran into my
> first big snag. I've been working on a quiz, and the first one had
> questions like this:
> 
> puts 'How many classes have a taunt kill?'
> puts 'A - Three'
> puts 'B - Four'
> puts 'C - Five'
> puts 'D - Six'
> answer = gets.chomp.downcase
> if (answer == 'd')
>   score = score + 1
> else
> end
> 
> But it's messy, since I have to repeat the code for every question. (I
> know, I know, DRY). With this in mind, I began construction on quiz2,
> and used this as my prototype:
> 
> def check
> answer = gets.chomp.downcase
> if (answer == c_answer)
>   score = score + 1
> else
>   puts 'The correct answer was ' + c_answer + '.'
> end
> end
> puts 'Which is the slowest class?'
> puts 'A - Pyro'
> puts 'B - Demoman'
> puts 'C - Heavy'
> puts 'D - Soldier'
> c_answer = 'c'
> check
> 
> I understand the problem (mostly), but I'm looking for a workaround.
> Most of my 'fixes' don't work because of the 'A, B, C, D' system; should
> that system be changed?
> 
> Sorry for such a long post, I've just really gotten into this.

read about class variables (or global variables)
@score

Also it will be cleaner if you pass the answer to chech() tru its 
argument list

def check(answer)

..play around.
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