From: Bill Guindon <agorilla@...>
Date: 2006-03-05T10:00:35+09:00
Subject: Re: Simple Script Help (New to Ruby)

On 3/4/06, Jordan Michaels <jordan@viviotech.net> wrote:
> Hello Ruby Masters!
>
> I'm attempting to write a very simple guessing game script in an effort
> to expand my knowledge about the Ruby Language. I'm running ruby on my
> OpenSuse Linux 10 box at home. I'm typically a web-programmer, but I
> want to get into something a little more deep.
>
> Here is my little script:
>
> ----------------
> # set the default result
> theResult = 0
>
> # create the random number
> theNumber = rand(10)
>
> while theResult != 3
>         print "Guess my number: "
>         theGuess = gets.to_i
>
>         # return key
>         # 1 = number is lower
>         # 2 = number is higher
>         # 3 = number matched!
>         if theNumber < theGuess
>                 theResult = 1
>         elseif theNumber > theGuess
>                 theResult = 2
>         elseif theNumber = theGuess
>                 theResult = 3
>         end
>
>         case theResult
>                 when 1
>                         puts "My number is lower."
>                 when 2
>                         puts "My number is higher."
>                 when 3
>                         puts "You guessed my number!"
>         end

This is a good place to use symbols -- if nothing else, you won't need
the comments explaining the keys:

         if theNumber < theGuess
                 theResult = :lower
         elsif theNumber > theGuess
                 theResult = :higher
         elsif theNumber = theGuess
                 theResult = :equal
         end

         case theResult
                 when :lower
                         puts "My number is lower."
                 when :higher
                         puts "My number is higher."
                 when :equal
                         puts "You guessed my number!"
         end


>         print "The Result: "
>         print theResult
>         print "\n"
>
>         print "The Guess: "
>         print theGuess.class
>         print "+"
>         print theGuess
>         print "\n"
>
>         print "The Number: "
>         print theNumber
>         print "\n"
> end
> ----------------
>
> and here's my output when I run it:
>
> ----------------
> utdream@dream:~/ruby_scripts> ruby guess_number.rb
> Guess my number: 1
> The Result: 0
> The Guess: Fixnum+1
> The Number: 3
> ----------------
>
> The result staying at 0 tells me that NONE of my comparisons worked. Can
> anyone tell me why? I'm sure this is something simple but any help would
> be appreciated.
>
> Thanks in advance!
>
> Warm regards,
> Jordan Michaels
> Vivio Technologies
>
>


--
Bill Guindon (aka aGorilla)
The best answer to most questions is "it depends".