CODEWITHSUNDEEP
ruby
codedude
codedude

Reputation: 6549

Ruby random number generator

I'm attempting to make a random number guessing game in Ruby. I'm rather new so perhaps the answer is obvious but why won't this work? 

number = rand(5)
choice = 9999
while number != choice do
    puts "Guess the number #{number}"
    choice = gets.chomp
end
puts "You guessed Correctly! #{number} was the correct number."

As you can see I limited it to numbers between 0 and 4. Then the while loop runs while the guess made by the user is different from the random number generated. However, even when the user enters the correct number, the while loop continues looping. As you can see I've even printed the generated number so I know which to guess.

Any idea what's going wrong here?

Upvotes: 0

Views: 708

Answers (2)

APerson
APerson

Reputation: 8422

You probably should be using something else to be comparing the number returned from the rand() function and the string returned from gets.

Perhaps the spaceship operator (<=>) would work, combined with turning the number into a string using to_s, in which case the while loop header would look like

while !(number.to_s <=> choice) do

or something like that.

You don't have to use the spaceship operator, though.

Upvotes: 1

Uri Agassi
Uri Agassi

Reputation: 37419

number is a number, choice is a string. You need to parse the string for this to work:

choice = gets.chomp.to_i

Upvotes: 3

Related Questions