CODEWITHSUNDEEP
rubywhile-loop
JonnyPolo
JonnyPolo

Reputation: 1

Continous Looping with Nested Loop

an example of the code I am trying to execute is as follows:

puts 'Please choose "A" or "B"?'
STDOUT.flush
@answer = gets.chomp.upcase
while @answer != "A" || "B"
    puts 'Invalid answer, choose "A" or B"'
    STDOUT.flush
    @answer = gets.chomp.upcase

end

How can I get this to stop looping once A or B is entered. If I remove the While loop I can get @answer to become A or B but once I add that it continually loops no matter what I type in.

Upvotes: 0

Views: 67

Answers (3)

Cary Swoveland
Cary Swoveland

Reputation: 110665

I prefer

@answer = nil 
until @answer == 'A' || @answer == 'B' do
  @answer = gets.chomp
end

Upvotes: 0

Arup Rakshit
Arup Rakshit

Reputation: 118261

The below way will also work :

unless ["A","B"].include? @answer

Upvotes: 0

d-wade
d-wade

Reputation: 621

I think your WHILE condition is not good, you can't just say A || B, maybe repeat the condition? Maybe like this?

while @answer != "A" || @answer != "B"

Hope it helps. :)

(edit: maybe even use AND (&&) instead of OR (||) ?)

Upvotes: 1

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