From: Greg Barozzi <greg5000@...>
Date: 2009-10-11T10:23:20+09:00
Subject: Re: Numbers game - multiple guesses?

John Kriple wrote:
> I'm trying to figure out how to get a user to be able to submit guesses
> in a guessing game multiple times.
> 

Hi John. There are bunches of ways you could do this, but here is what 
I'd do.

#################### CODE 
###############################################

puts "I've picked a number between 1 and 10. See if you can guess it!"

until 4 == gets.chomp.to_i
puts "WRONG! Try again."
end

puts "You got it!"

################## END CODE 
#############################################

UNTIL is like a while loop but it loops 'until' a condition is met. In
other words, WHILE will loop as long as a condition is TRUE, and UNTIL 
will loop until a condition is FALSE.

You could also write the until line as:

            while 4 != gets.chomp.to_i

and it would be the same thing.

I noticed that I didn't use a single variable in that code. If you 
wanted,
you could have used a variable in place of the constant fixnum 4, and 
just assigned a value to it.

As far as your code goes ... your if/ifelse statements, while 
functional, are
not very pretty. Since all you are doing is looking for the CORRECT 
answer, you could have written ...

if secret_number == guessed_number
print "You guessed it!\n"
else # this covers all other cases.
print "Nope! Guess again.\n"
end

And that would be simpler. ifelse in general is an ugly construct in my 
opinion and so I tend to choose CASE when I need to evaluate multiple 
conditions.

Hope this helps!
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