REBOL [ Title: "Twelve Days of Christmas" Date: 14-Dec-1999 File: %twelvedays.r library: [ level: 'beginner platform: 'all type: 'Game domain: 'text-processing tested-under: none support: none license: none see-also: none ] Version: 1.0.0 Author: "Anonymous" Purpose: "Twelve Days of Christmas" ] Twelve_Days: make object! [ Sing: function [] [Gift Christmas_Days] [ Gift: function [Day [integer!]] [Gifts Gift] [ Gifts: [ "a partridge in a pear tree" "two turtle doves" "three french hens" "four calling birds" "five golden rings" "six geese a-laying" "seven swans a-swimming" "eight maids a-milking" "nine ladies dancing" "ten lords a-leaping" "eleven pipers piping" "twelve drummers drumming" ] Gift: make string! 100 until [ append Gift rejoin [ Gifts/:Day either 1 < Day [","] ["."] either 2 = Day [" and"] [{}] newline ] Day: Day - 1 Day < 1 ] Gift ] Christmas_Days: [ "first" "second" "third" "fourth" "fifth" "sixth" "seventh" "eighth" "ninth" "tenth" "eleventh" "twelfth" ] repeat Day length? Christmas_Days [ print rejoin [ "On the " Christmas_Days/:Day " day of Christmas," newline "my true love gave to me:" newline Gift Day ] ] print "Merry Christmas and a Happy New Year!" ] ] Twelve_Days/Sing