#99 Bottles of Beer on the Wall
#by Daniel Straight, July 10, 2006
#see http://ruby-lang.org/en/ for info on Ruby

#This version adds a to_w (to word) conversion to the Integer class
#and then uses it to print the lyrics with words instead of numerals

class Integer
	def to_w
		words = {
			0 => "no", 
			1 => "one", 
			2 => "two", 
			3 => "three", 
			4 => "four", 
			5 => "five", 
			6 => "six",
			7 => "seven", 
			8 => "eight", 
			9 => "nine", 
			10 => "ten", 
			11 => "eleven", 
			12 => "twelve",
			13 => "thirteen", 
			14 => "fourteen", 
			15 => "fifteen", 
			16 => "sixteen", 
			17 => "seventeen",
			18 => "eighteen", 
			19 => "nineteen"