From: Paul Mckibbin <pmckibbin@...>
Date: 2010-09-03T02:05:58+09:00
Subject: Re: New to ruby - Need help with simple guessing program

Hi Evan,

As others have said, you could have a single control loop, and run 
everything in that. Something like

won=false
while !won
  <logic for the game>
  if <win condition>
    won=true
  end
end

The random number in your code will change every time rand(10) is 
called, so for the user they won't know if their next guess should be 
higher or lower. Also having a single place for input will make it 
easier to do other things for that input. (e.g. count=0 outside the loop 
and count+=1 inside, rather than multiple count+=1 for every line 
requiring user input.)

For comparison, you can use the <=> operator which will return -1 if 
lower, 1 if higher and 0 if they are the same. Using this combination of 
things, it is possible to code the whole game in about 20 clear lines of 
ruby and then to add 3 lines to make it keep a count and display that 
count at the end. (16 was what my code example was, others might come up 
with even fewer.)

Since this is practice for you, I've held off on putting any real code 
here, but as a hint, take a look at using case...when...else if you try 
with <=>. One good place to go to for practice code is 
http://rubylearning.com/blog/. They set a coding challenge every month, 
aimed at new ruby developers.

Good luck and enjoy,
Paul

Evan Riley wrote:
> Ok,so as a little practice I've decided to come up with a Guessing Game
> where the user is able to guess a number, and if it the same as the
> randomly generated number by the computer, he gets a message that says a
> little hooray message. That part is done, and completed, but now I need
> help
> with tracking the amount of entries he makes in gets
> 
> Here is my current code:
> 
> random_number = rand(10)
> 
> puts 'Can you guess the number?'
> puts 'Select a number from 1-10 please'
> 
> players_number = gets.chomp
> 
> while players_number.to_i != random_number.to_i
> 
>   while players_number.to_i < random_number.to_i
>   if players_number.to_i < random_number.to_i
>     puts 'Sorry your to low'
>     puts '_________________'
>     random_number = rand(10)
> 
>     puts 'Can you guess the number?'
>     puts 'Select a number from 1-10 please'
> 
>     players_number = gets.chomp
>   end
>   end
> 
>   while players_number.to_i > random_number.to_i
>   if players_number.to_i > random_number.to_i
>     puts 'Sorry your to high'
>     puts '__________________'
>     random_number = rand(10)
> 
>     puts 'Can you guess the number?'
>     puts 'Select a number from 1-10 please'
> 
>     players_number = gets.chomp
>   end
>   end
> 
>   while players_number.to_i == random_number.to_i
>   if players_number.to_i == random_number.to_i
>     puts 'Congratluations! You Win!'
>     puts '_________________________'
>     random_number = rand(10)
> 
>     puts 'Can you guess the number?'
>     puts 'Select a number from 1-10 please'
> 
>     players_number = gets.chomp
>   else
> 
>   end
>   end
> end
> 
> Can anyone help me with tracking the amount of entries he makes? Thank
> you.

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