Trying to create an array from input whilst in a loop - Ruby

Question

I am trying to create a programme that asks the user for a number, the programme keeps asking the user for a number until "stop" is entered at which point the sum of the numbers is returned.

The code sort of works but I realise that the first puts/gets.chomp is outside of the loop and is not being added to the array. I dont know how to implement this, any help thoughts would be greatly appreciated!

array = []

puts 'Give me a number'

answer = gets.chomp

until answer == "stop"
  puts 'Give me a number'
answer = gets.chomp
  array.push(answer)
end

array.pop

array

Why do u need input before loop? You can just set answer = nil before loop and all must be fine — QNester
– QNester, Commented May 5, 2019 at 19:21
Welcome to SO! You're extremely close--I recommend trying to work it out the rest of the way! — ggorlen
– ggorlen, Commented May 5, 2019 at 19:23
Why are you using an array? Since the goal is to output the sum of the numbers, just start with sum = 0 and keep incrementing it by the input as long as the input is numeric. There's no need to store all the inputs. — pjs
– pjs, Commented May 5, 2019 at 22:37

Schwern · Accepted Answer · 2019-05-05 19:36:22Z

2

You have a situation like this.

do something
determine if we should stop
do something else
repeat

For this sort of fine control use a loop to repeat until you break.

# Initialize your list of numbers.
numbers = []

# Start a loop.
loop do
  # Get the answer.
  puts 'Give me a number'
  answer = gets.chomp

  # Stop if the user wants to stop.
  break if answer == 'stop'

  # Store the number after checking that it is a number.
  numbers.push(answer)
end

p numbers

answered May 5, 2019 at 19:36

Schwern

167k28 gold badges225 silver badges370 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Trying to create an array from input whilst in a loop - Ruby

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related