99bottles

99bottles

class Song

  def booze (bottle, number)
    @bottle = bottle
    @number = number
  end

  def sing
    while number != 0
      puts "#{number} Bottles of #{bottle} on the wall, #{number} bottles of #{bottle}, you take one down, pass it around #{number-1} bottles of #{bottle} on the wall"
      number -= 1
    end
  end
end

99bottles = Song.new('wine', 18)
99bottles.sing

There are a couple of issues:

The first one is that you can’t have variable names that start with numbers.

I would try to write this program without using classes or methods, first.

Hi colleague.

1_ the .new method is associated to the function "initialize" so to define your variables you would need to change the name of the function "booze" to "initialize". (without the double quotation)
2_ Then when u use the variables "number" & "bottle" you need to put the @ in the beginning so it would look something like this: #{@Bottle}. The variable "bottle" is private to the method "booze" and the "@Bottle" is open to use in the whole class.
3_ A different way to define variables to use in the class is using the "attr_accessor" so it would look like this:
attr_accessor :bottle, :number
and you would not need to use the function initialize. Here an stack-overflow article about this
http://stackoverflow.com/questions/4370960/what-is-attr-accessor-in-ruby

cheers!

Thanks very much for this! I've updated the code (see below)
But now i'm receiving an error:

99bottles.rb:45:in initialize': wrong number of arguments(2 for 0) (ArgumentError) from 99bottles.rb:45:innew'
from 99bottles.rb:45:in `

'

class Song
attr_accessor :bottle, :number

def sing
while
if @Number > 1
puts "#{@Number} bottles of #{@Bottle} on the wall, #{@Number} bottles of #{@Bottle}, you take one down, pass it around #{@Number-1} bottles of #{@Bottle} on the wall"
@Number -= 1
elsif @Number == 1
puts "#{@Number} bottle of #{@Bottle} on the wall, #{@Number} bottle of #{@Bottle}, you take one down, pass it around #{@Number-1} bottle of #{@Bottle} on the wall"
else
puts "We need more bottles than that!"
end
end
end
end

ninteyninebottles = Song.new('wine', 18)
ninteyninebottles.sing

Does something change about the Song.new part of the program at the bottom?

Thanks,
Erik