in_words in progress

in_words.rb

module InWords
    def in_words
        places=1
        num = self
        while(num/10 != 0)
          places num+= 1
          num = num/10
        end

        if self>1000
            "sorry, I can't count higher then 1000!"
        else

          small =['zero', 'one', 'two', 'three', 'four', 'five',
                        'six', 'seven', 'eight', 'nine', 'ten',
                        'eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen',
                        'sixteen', 'seventeen', 'eighteen', 'nineteen']
          tens = ['zero', 'ten', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety']
          more = ['hundred', 'thousand', 'million', 'billion', 'trillion']

          case size
            when places=1
              puts small[self]
            when places = 2
              if self<20
                puts small[self]
              else
                puts tens[self/10]+" "+small[self%10]
              end
            when places = 3
              puts self[self/100]+" "+more[0]+tens[self%100/10]+" "+small[self%10]
          end
          
        end
    end
end

class Fixnum
    include InWords
end






# tests

describe InWords do
  it "has an in_words method" do
    class TestClass
      include InWords
    end
    TestClass.new.should respond_to(:in_words)
  end
end
describe Fixnum do
  describe "in_words" do
    it "translates numbers less than ten" do
      4.in_words.should eq("four")
    end
    it "translates the teens" do
      17.in_words.should eq("seventeen")
    end
    it "translates numbers 20 through 99" do
      47.in_words.should eq("forty seven")
    end
    it "translates numbers 100 through 999" do
      206.in_words.should eq("two hundred six")
      613.in_words.should eq("six hundred thirteen")
      992.in_words.should eq("nine hundred ninety two")
    end
  end
end