Guessing Game Ruby - ruby

Question

So i have been learning ruby as of late and i am working on this code for practice purposes but i cannot seems to be able to solve this problem any help would be appreciate it.
This is are the guidelines i am following:
clear the screen
greet the player
explain the rules of the game to the player
generate a random number between 0 and x (x being a variable that can be set to any integer)
allow the player n number of guesses (n being a variable)
keep track of the guess history
don't count repeated guesses against the player
congratulate the player when he/she guesses correctly
alert the player when there is only one guess remaining
print the guess history at the end of the game
count number of games won IN A ROW
count number of games won in total
congratulate the play on 3 games won IN A ROW
ask if the player wants to play again
thank the player for playing games if the number of games played is greater than 2
please keep in my that this is work in progress and i have not completed all the guideline, however my questions is with one particular part of it.
here is the code:
guess = Array.new
puts guess.class
def ask()
puts "Please answer in a 'y' or 'n' only!"
puts "Would like to play again?"
end
def guess_check_against()
g = guess.last
unless guess.include?(g) != guess
count+=1
else
puts "sorry you have guessed that number before, Guess Again: "
guess << gets.to_i
count+=1
end
end
puts "what is your name?"
user= gets.chomp
puts "Hello #{user}!!"
max_user_attempts = 4
#attempt_counter = 0
directions = "\nLets play a guessing game! You have
#{max_user_attempts.to_s} guesses before you lose."
print directions
g = guess.last
win = 0
count = 0
play = true
while play == true
puts "Please tell me the max value of the random number: "
max= gets.to_i
num= rand(max)
puts "Ok. The random number is generated between 1 and " + max.to_s + "."
puts "Make your guess: "
guess << gets.to_i
guess_check_against()
#attempt_counter+=1
while guess != num && play != false
if g > num && #attempt_counter < max_user_attempts
print "That's too high. Guess again: "
guess << gets.to_i
guess_check_against()
#attempt_counter+=1
elsif g < num && #attempt_counter < max_user_attempts
print "That's too low. Guess again: "
guess << gets.to_i
guess_check_against()
count+=1
#attempt_counter+=1
else
break
end
end
if #attempts_counter >= max_user_attemtps
puts "Sorry! you lost! Try Again"
break
else #attempts_counter <= max_user_attempts
puts "Correct! You guessed the answer in " + count.to_s + " tries!"
win+=1
end
if win >= 3
puts "Congratulation! you have #{win} number of games in a row"
ask()
answer = gets.chomp!
elsif win < 3
ask()
answer = gets.chomp!
else
break
end
if answer == 'n'
play = false
break
end
if answer == 'y'
play = true
count = 0
end
end
puts "Ok. Goodbye!!"
and here is the error i keep receiving when i try to run this program:
guessing_game.rb:12:in `guess_check_against': undefined local variable or method `guess' for main:Object (NameError)
from guessing_game.rb:45:in `<main>'
when i try to use irb to run the same scenario it works completely fine.
i can not figure out what i am doing wrong, please help!!

Answer 1

The method definition
def guess_check_against()
g = guess.last
...
end
has its own scope, and the local variable
guess = Array.new
that you defined outside of it, is not accessible inside the method definition. guess is not defined inside the method definition. You can change the code so that the method takes that as an argument, and it will become accessible.