The Twelve Days of Christmas

From Rosetta Code
Task
The Twelve Days of Christmas
You are encouraged to solve this task according to the task description, using any language you may know.

Write a program that outputs the lyrics of the Christmas carol The Twelve Days of Christmas. The lyrics can be found here. (You must reproduce the words in the correct order, but case, format, and punctuation are left to your discretion.)

Cf

ActionScript[edit]

This program outputs the lyrics to a TextField object. The text field can be scrolled using the mouse wheel (Windows only) or by using the up/down arrow keys on the keyboard.

Works with: Flash Player version 10
Works with: AIR version 1.5
(Although the code can work in Flash Player 9 by replacing the Vectors with Arrays)
package {
 
import flash.display.Sprite;
import flash.events.Event;
import flash.events.KeyboardEvent;
import flash.events.MouseEvent;
import flash.text.TextField;
import flash.text.TextFieldAutoSize;
import flash.text.TextFormat;
import flash.ui.Keyboard;
 
public class TwelveDaysOfChristmas extends Sprite {
 
private var _textArea:TextField = new TextField();
 
public function TwelveDaysOfChristmas() {
if ( stage ) _init();
else addEventListener(Event.ADDED_TO_STAGE, _init);
}
 
private function _init(e:Event = null):void {
 
removeEventListener(Event.ADDED_TO_STAGE, _init);
 
_textArea = new TextField();
_textArea.x = 10;
_textArea.y = 10;
_textArea.autoSize = TextFieldAutoSize.LEFT;
_textArea.wordWrap = true;
_textArea.width = stage.stageWidth - 20;
_textArea.height = stage.stageHeight - 10;
_textArea.multiline = true;
 
var format:TextFormat = new TextFormat();
format.size = 14;
_textArea.defaultTextFormat = format;
 
var verses:Vector.<String> = new Vector.<String>(12, true);
var lines:Vector.<String>;
 
var days:Vector.<String> = new Vector.<String>(12, true);
var gifts:Vector.<String> = new Vector.<String>(12, true);
 
days[0] = 'first';
days[1] = 'second';
days[2] = 'third';
days[3] = 'fourth';
days[4] = 'fifth';
days[5] = 'sixth';
days[6] = 'seventh';
days[7] = 'eighth';
days[8] = 'ninth';
days[9] = 'tenth';
days[10] = 'eleventh';
days[11] = 'twelfth';
 
gifts[0] = 'A partridge in a pear tree';
gifts[1] = 'Two turtle doves';
gifts[2] = 'Three french hens';
gifts[3] = 'Four calling birds';
gifts[4] = 'Five golden rings';
gifts[5] = 'Six geese a-laying';
gifts[6] = 'Seven swans a-swimming';
gifts[7] = 'Eight maids a-milking';
gifts[8] = 'Nine ladies dancing';
gifts[9] = 'Ten lords a-leaping';
gifts[10] = 'Eleven pipers piping';
gifts[11] = 'Twelve drummers drumming';
 
var i:uint, j:uint, k:uint, line:String;
 
for ( i = 0; i < 12; i++ ) {
 
lines = new Vector.<String>(i + 2, true);
lines[0] = "On the " + days[i] + " day of Christmas, my true love gave to me";
 
j = i + 1;
k = 0;
while ( j-- > 0 )
lines[++k] = gifts[j];
 
verses[i] = lines.join('\n');
 
if ( i == 0 )
gifts[0] = 'And a partridge in a pear tree';
 
}
 
var song:String = verses.join('\n\n');
_textArea.text = song;
addChild(_textArea);
 
_textArea.addEventListener(MouseEvent.MOUSE_WHEEL, _onMouseWheel);
stage.addEventListener(KeyboardEvent.KEY_DOWN, _onKeyDown);
 
}
 
private function _onKeyDown(e:KeyboardEvent):void {
if ( e.keyCode == Keyboard.DOWN )
_textArea.y -= 40;
else if ( e.keyCode == Keyboard.UP )
_textArea.y += 40;
}
 
private function _onMouseWheel(e:MouseEvent):void {
_textArea.y += 20 * e.delta;
}
 
}
 
}

ALGOL 68[edit]

Works with: ALGOL 68 Genie
BEGIN
[]STRING labels = ("first", "second", "third", "fourth",
"fifth", "sixth", "seventh", "eighth",
"ninth", "tenth", "eleventh", "twelfth");
 
[]STRING gifts = ("A partridge in a pear tree.",
"Two turtle doves, and",
"Three French hens,",
"Four calling birds,",
"Five gold 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,");
FOR day TO 12 DO
print(("On the ", labels[day],
" day of Christmas, my true love sent to me:", newline));
FOR gift FROM day BY -1 TO 1 DO
print((gifts[gift], newline))
OD;
print(newline)
OD
END
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves, and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves, and
A partridge in a pear tree.

AppleScript[edit]

Iterative[edit]

set gifts to {"A partridge in a pear tree.", "Two turtle doves, and", ¬
"Three French hens,", "Four calling birds,", ¬
"Five gold 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"}
 
set labels to {"first", "second", "third", "fourth", "fifth", "sixth", ¬
"seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth"}
 
repeat with day from 1 to 12
log "On the " & item day of labels & " day of Christmas, my true love sent to me:"
repeat with gift from day to 1 by -1
log item gift of gifts
end repeat
log ""
end repeat
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves, and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves, and
A partridge in a pear tree.


Functional composition[edit]

Drawing on some functional primitives, and post-Yosemite AppleScript's ability to import Foundation classes:

use framework "Foundation"
 
property pstrGifts : "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"
 
property pstrOrdinals : "first, second, third, fourth, fifth, " & ¬
"sixth, seventh, eighth, ninth, tenth, eleventh, twelfth"
 
on daysOfXmas()
 
-- csv :: String -> [String]
script csv
on lambda(str)
splitOn(", ", str)
end lambda
end script
 
set {gifts, ordinals} to map(csv, [pstrGifts, pstrOrdinals])
 
-- verseOfTheDay :: Int -> String
script verseOfTheDay
 
-- dayGift :: Int -> String
script dayGift
on lambda(n, i)
set strGift to item n of gifts
if n = 1 then
set strFirst to strGift & " !"
if i is not 1 then
"And " & toLowerCase(text 1 of strFirst) & text 2 thru -1 of strFirst
else
strFirst
end if
else if n = 5 then
toUpperCase(strGift)
else
strGift
end if
end lambda
end script
 
on lambda(intDay)
"On the " & item intDay of ordinals & " day of Xmas, my true love gave to me ..." & ¬
linefeed & intercalate("," & linefeed, ¬
map(dayGift, range(intDay, 1)))
 
end lambda
end script
 
intercalate(linefeed & linefeed, ¬
map(verseOfTheDay, range(1, length of ordinals)))
 
end daysOfXmas
 
-- TEST
on run
 
daysOfXmas()
 
end run
 
 
-- GENERIC FUNCTIONS
 
-- splitOn :: Text -> Text -> [Text]
on splitOn(strDelim, strMain)
set {dlm, my text item delimiters} to {my text item delimiters, strDelim}
set lstParts to text items of strMain
set my text item delimiters to dlm
return lstParts
end splitOn
 
-- map :: (a -> b) -> [a] -> [b]
on map(f, xs)
tell mReturn(f)
set lng to length of xs
set lst to {}
repeat with i from 1 to lng
set end of lst to lambda(item i of xs, i, xs)
end repeat
return lst
end tell
end map
 
-- intercalate :: Text -> [Text] -> Text
on intercalate(strText, lstText)
set {dlm, my text item delimiters} to {my text item delimiters, strText}
set strJoined to lstText as text
set my text item delimiters to dlm
return strJoined
end intercalate
 
-- range :: Int -> Int -> [Int]
on range(m, n)
set d to 1
if n < m then set d to -1
set lst to {}
repeat with i from m to n by d
set end of lst to i
end repeat
return lst
end range
 
-- Text -> Text
on toLowerCase(str)
set ca to current application
((ca's NSString's stringWithString:(str))'s ¬
lowercaseStringWithLocale:(ca's NSLocale's currentLocale())) as text
end toLowerCase
 
-- Text -> Text
on toUpperCase(str)
set ca to current application
((ca's NSString's stringWithString:(str))'s ¬
uppercaseStringWithLocale:(ca's NSLocale's currentLocale())) as text
end toUpperCase
 
-- Lift 2nd class handler function into 1st class script wrapper
-- mReturn :: Handler -> Script
on mReturn(f)
if class of f is script then
f
else
script
property lambda : f
end script
end if
end mReturn
Output:
On the first day of Xmas, my true love gave to me ...
A partridge in a pear tree !

On the second day of Xmas, my true love gave to me ...
Two turtle doves,
And a partridge in a pear tree !

...

On the twelfth day of Xmas, my true love gave to me ...
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three French hens,
Two turtle doves,
And a partridge in a pear tree !

Ada[edit]

with Ada.Text_IO;           use Ada.Text_IO;
with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
 
procedure Twelve_Days_Of_Christmas is
type Days is (First, Second, Third, Fourth, Fifth, Sixth,
Seventh, Eighth, Ninth, Tenth, Eleventh, Twelfth);
 
package E_IO is new Ada.Text_IO.Enumeration_IO(Days);
use E_IO;
 
Gifts : array (Days) of Unbounded_String :=
(To_Unbounded_String(" A partridge in a pear-tree."),
To_Unbounded_String(" Two turtle doves"),
To_Unbounded_String(" Three French hens"),
To_Unbounded_String(" Four calling birds"),
To_Unbounded_String(" Five golden rings"),
To_Unbounded_String(" Six geese a-laying"),
To_Unbounded_String(" Seven swans a-swimming"),
To_Unbounded_String(" Eight maids a-milking"),
To_Unbounded_String(" Nine ladies dancing"),
To_Unbounded_String(" Ten lords a-leaping"),
To_Unbounded_String(" Eleven pipers piping"),
To_Unbounded_String(" Twelve drummers drumming"));
begin
for Day in Days loop
Put("On the "); Put(Day, Set => Lower_Case); Put(" day of Christmas,");
New_Line; Put_Line("My true love gave to me:");
for D in reverse Days'First..Day loop
Put_Line(To_String(Gifts(D)));
end loop;
if Day = First then
Replace_Slice(Gifts(Day), 2, 2, "And a");
end if;
New_Line;
end loop;
end Twelve_Days_Of_Christmas;
 

AutoHotkey[edit]

nth := ["first","second","third","fourth","fifth","sixth","seventh","eighth","ninth","tenth","eleventh","twelfth"]
lines := ["A partridge in a pear tree."
,"Two turtle doves and"
,"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"]
 
full:="", mid:=""
loop % lines.MaxIndex()
{
top:="On the " . nth[A_Index] . " day of Christmas,`nMy true love gave to me:"
mid:= lines[A_Index] . "`n" . mid
full:= full . top . "`n" . mid . ((A_Index<lines.MaxIndex())?"`n":"")
}
MsgBox % full

AWK[edit]

 
# syntax: GAWK -f THE_TWELVE_DAYS_OF_CHRISTMAS.AWK
BEGIN {
gifts[++i] = "a partridge in a pear tree."
gifts[++i] = "two turtle doves, and"
gifts[++i] = "three french hens,"
gifts[++i] = "four calling birds,"
gifts[++i] = "five golden rings,"
gifts[++i] = "six geese a-laying,"
gifts[++i] = "seven swans a-swimming,"
gifts[++i] = "eight maids a-milking,"
gifts[++i] = "nine ladies dancing,"
gifts[++i] = "ten lords a-leaping,"
gifts[++i] = "eleven pipers piping,"
gifts[++i] = "twelve drummers drumming,"
split("first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth",days_arr," ")
for (i=1; i<=12; i++) {
printf("On the %s day of Christmas,\n",days_arr[i])
print("my true love gave to me:")
for (j=i; j>0; j--) {
printf("%s\n",gifts[j])
}
print("")
}
exit(0)
}
 
Output:
On the first day of Christmas,
my true love gave to me:
a partridge in a pear tree.

On the second day of Christmas,
my true love gave to me:
two turtle doves, and
a partridge in a pear tree.

...

On the twelfth day of Christmas,
my true love gave to me:
twelve drummers drumming,
eleven pipers piping,
ten lords a-leaping,
nine ladies dancing,
eight maids a-milking,
seven swans a-swimming,
six geese a-laying,
five golden rings,
four calling birds,
three french hens,
two turtle doves, and
a partridge in a pear tree.

Bracmat[edit]

(     first
second
third
fourth
fifth
sixth
seventh
eighth
ninth
tenth
eleventh
twelveth
 : ?days
& "A partridge in a pear tree."
"Two turtle doves and"
"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,"
 : ?gifts
& :?given
& whl
' ( !gifts:%?gift ?gifts
& !gift \n !given:?given
& !days:%?day ?days
& out
$ ( str
$ ("\nOn the " !day " day of Christmas my true love gave to me:
" !given)
)
)
);

Befunge[edit]

This is essentially the same algorithm as Old lady swallowed a fly - just a different set of phrases and a simpler song pattern.

0246*+00p20#v_:#`2#g+#0:#0<>\#%"O"/#:3#:+#< g48*- >1-:!#v_\1+::"O"%\"O"/v
>-#11#\0#50#< g2-:00p4v >\#%"O"/#::$#<3#$+g48*-v^\,+*+ 55!:*!!-"|":g+3<
^02_>#`>#< 2 5 3 1 0 \1-:#^\_^#:-1\+<00_@#:>#<$<
(On the ?|A partridge in a pear tree.||&first% andL day of Christmas,|My true l
ove gave to me:2|Two turtle doves'second3|Three french hens&third4|Four calling
birds'fourth3|Five golden rings&fifth4|Six geese a-laying&sixth8|Seven swans a
-swimming(seventh7|Eight maids a-milking'eighth5|Nine ladies dancing&ninth5|Ten
lords a-leaping&tenth6|Eleven pipers piping)eleventh:|Twelve drummers drumming
(twelfth

C[edit]

 
/*Abhishek Ghosh, 20th March 2014, Rotterdam*/
 
#include<stdio.h>
 
int main()
{
int i,j;
 
char days[12][10] =
{
"First",
"Second",
"Third",
"Fourth",
"Fifth",
"Sixth",
"Seventh",
"Eighth",
"Ninth",
"Tenth",
"Eleventh",
"Twelfth"
};
 
char gifts[12][33] =
{
"Twelve drummers drumming",
"Eleven pipers piping",
"Ten lords a-leaping",
"Nine ladies dancing",
"Eight maids a-milking",
"Seven swans a-swimming",
"Six geese a-laying",
"Five golden rings",
"Four calling birds",
"Three french hens",
"Two turtle doves",
"And a partridge in a pear tree."
};
 
for(i=0;i<12;i++)
{
printf("\n\nOn the %s day of Christmas\nMy true love gave to me:",days[i]);
 
for(j=i;j>=0;j--)
{
(i==0)?printf("\nA partridge in a pear tree."):printf("\n%s%c",gifts[11-j],(j!=0)?',':' ');
}
}
 
return 0;
}
 

C++[edit]

#include <iostream>
#include <array>
#include <string>
using namespace std;
 
int main()
{
const array<string, 12> days
{
"first",
"second",
"third",
"fourth",
"fifth",
"sixth",
"seventh",
"eighth",
"ninth",
"tenth",
"eleventh",
"twelfth"
};
 
const array<string, 12> gifts
{
"And 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"
};
 
for(int i = 0; i < days.size(); ++i)
{
cout << "On the " << days[i] << " day of christmas, my true love gave"
<< " to me\n";
 
if(i == 0)
{
cout << "A partridge in a pear tree\n";
}
else
{
int j = i + 1;
while(j-- > 0) cout << gifts[j] << "\n";
}
 
cout << "\n";
}
 
return 0;
}

C#[edit]

using System;
 
public class TwelveDaysOfChristmas {
 
public static void Main() {
 
string[] days = new string[12] {
"first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth",
"tenth", "eleventh", "twelfth",
};
 
string[] gifts = new string[12] {
"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"
};
 
for ( int i = 0; i < 12; i++ ) {
 
Console.WriteLine("On the " + days[i] + " day of Christmas, my true love gave to me");
 
int j = i + 1;
while ( j-- > 0 )
Console.WriteLine(gifts[j]);
 
Console.WriteLine();
 
if ( i == 0 )
gifts[0] = "And a partridge in a pear tree";
}
 
}
 
}

Clojure[edit]

Translation of: Perl 6
(let [numbers '(first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth)
 
gifts ["And a partridge in a pear tree", "Two turtle doves", "Three French hens",
"Four calling birds", "Five gold rings", "Six geese a-laying",
"Seven swans a-swimming", "Eight maids a-miling", "Nine ladies dancing",
"Ten lords a-leaping", "Eleven pipers piping", "Twelve drummers drumming"]
 
day (fn [n] (printf "On the %s day of Christmas, my true love sent to me\n" (nth numbers n)))]
 
(day 0)
(println (clojure.string/replace (first gifts) "And a" "A"))
(dorun (for [d (range 1 12)] (do
(println)
(day d)
(dorun (for [n (range d -1 -1)]
(println (nth gifts n))))))))
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

COBOL[edit]

Works with: GNU Cobol version 2.0
       >>SOURCE FREE
PROGRAM-ID. twelve-days-of-christmas.
 
DATA DIVISION.
WORKING-STORAGE SECTION.
01 gifts-area VALUE "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 ".
03 gifts PIC X(30) OCCURS 12 TIMES
INDEXED BY gift-idx.
 
01 ordinals-area VALUE "first second third fourth fifth "
& "sixth seventh eighth ninth tenth eleventh twelfth ".
03 ordinals PIC X(10) OCCURS 12 TIMES.
 
01 day-num PIC 99 COMP.
 
PROCEDURE DIVISION.
PERFORM VARYING day-num FROM 1 BY 1 UNTIL day-num > 12
DISPLAY "On the " FUNCTION TRIM(ordinals (day-num)) " day of Christmas,"
" my true love gave to me"
 
IF day-num = 1
DISPLAY "A " gifts (1)
ELSE
PERFORM VARYING gift-idx FROM day-num BY -1 UNTIL gift-idx = 1
DISPLAY gifts (gift-idx)
END-PERFORM
DISPLAY "And a " gifts (1)
END-IF
 
DISPLAY SPACE
END-PERFORM
.
END PROGRAM twelve-days-of-christmas.

Common Lisp[edit]

(let 
((names '(first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth))
(gifts '( "A partridge in a pear tree." "Two turtle doves and" "Three French hens,"
"Four calling birds," "Five gold 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," )))
 
(loop for day in names for i from 0 doing
(format t "On the ~a day of Christmas, my true love sent to me:" (string-downcase day))
(loop for g from i downto 0 doing (format t "~a~%" (nth g gifts)))
(format t "~%~%")))
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

D[edit]

Translation of: Python
immutable 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"
;
 
immutable days = "first second third fourth fifth
sixth seventh eighth ninth tenth
eleventh twelfth"
;
 
void main() @safe {
import std.stdio, std.string, std.range;
 
foreach (immutable n, immutable day; days.split) {
auto g = gifts.splitLines.take(n + 1).retro;
writeln("On the ", day,
" day of Christmas\nMy true love gave to me:\n",
g[0 .. $ - 1].join('\n'),
(n > 0 ? " and\n" ~ g.back : g.back.capitalize), '\n');
}
}

dc[edit]

0 
 
d [first] r :n
d [A partridge in a pear tree.] r :g 1 +
 
d [second] r :n
d [Two turtle doves and] r :g 1 +
 
d [third] r :n
d [Three French hens,] r :g 1 +
 
d [fourth] r :n
d [Four calling birds,] r :g 1 +
 
d [fifth] r :n
d [Five gold rings,] r :g 1 +
 
d [sixth] r :n
d [Six geese a-laying,] r :g 1 +
 
d [seventh] r :n
d [Seven swans a-swimming,] r :g 1 +
 
d [eighth] r :n
d [Eight maids a-milking,] r :g 1 +
 
d [ninth] r :n
d [Nine ladies dancing,] r :g 1 +
 
d [tenth] r :n
d [Ten lords a-leaping,] r :g 1 +
 
d [eleventh] r :n
d [Eleven pipers piping,] r :g 1 +
 
d [twelfth] r :n
[Twelve drummers drumming,] r :g
 
[
d
 ;g n
10 P
] sp
 
[
d
0 r !<p
1 -
d
0 r !<r
] sr
 
[
[On the ] n
d ;n n
[ day of Christmas, my true love sent to me:] n
10 P
d
lr x s_
10 P
1 +
d
12 r <l
] sl
 
0 ll x
 
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

Eiffel[edit]

 
class
APPLICATION
 
create
make
 
feature
 
make
do
twelve_days_of_christmas
end
 
feature {NONE}
 
twelve_days_of_christmas
-- Christmas carol: Twelve days of christmas.
local
i, j: INTEGER
do
create gifts.make_empty
create days.make_empty
gifts := <<"A partridge in a pear tree.", "Two turtle doves and", "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", "And a partridge in a pear tree.", "Two turtle doves">>
days := <<"first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth", "eleventh", "Twelfth">>
from
i := 1
until
i > days.count
loop
io.put_string ("On the " + days [i] + " day of Christmas.%N")
io.put_string ("My true love gave to me:%N")
from
j := i
until
j <= 0
loop
if i = 12 and j = 2 then
io.put_string (gifts [14] + "%N")
io.put_string (gifts [13] + "%N")
j := j - 1
else
io.put_string (gifts [j] + "%N")
end
j := j - 1
end
io.new_line
i := i + 1
end
end
 
gifts: ARRAY [STRING]
 
days: ARRAY [STRING]
 
end
 

Elixir[edit]

gifts = """
A partridge in a pear tree
Two turtle doves and
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
""" |> String.split("\n", trim: true)
 
days = ~w(first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth)
 
Enum.with_index(days) |> Enum.each(fn {day, i} ->
IO.puts "On the #{day} day of Christmas"
IO.puts "My true love gave to me:"
Enum.take(gifts, i+1) |> Enum.reverse |> Enum.each(&IO.puts &1)
IO.puts ""
end)
Output:
On the first day of Christmas
My true love gave to me:
A partridge in a pear tree

On the second day of Christmas
My true love gave to me:
Two turtle doves and
A partridge in a pear tree

...

On the twelfth day of Christmas
My true love gave to me:
Twelve drummers drumming
Eleven pipers piping
Ten lords a-leaping
Nine ladies dancing
Eight maids a-milking
Seven swans a-swimming
Six geese a-laying
Five golden rings
Four calling birds
Three french hens
Two turtle doves and
A partridge in a pear tree

Erlang[edit]

-module(twelve_days).
-export([gifts_for_day/1]).
 
names(N) -> lists:nth(N,
["first", "second", "third", "fourth", "fifth", "sixth",
"seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth" ]).
 
gifts() -> [ "A partridge in a pear tree.", "Two turtle doves and",
"Three French hens,", "Four calling birds,",
"Five gold 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," ].
 
gifts_for_day(N) ->
"On the " ++ names(N) ++ " day of Christmas, my true love sent to me:\n" ++
string:join(lists:reverse(lists:sublist(gifts(), N)), "\n").
 
main(_) -> lists:map(fun(N) -> io:fwrite("~s~n~n", [gifts_for_day(N)]) end,
lists:seq(1,12)).
 
Output:
On the first day of Christmas, my true love sent to me:

A partridge in a pear tree.

On the second day of Christmas, my true love sent to me: Two turtle doves and A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me: Twelve drummers drumming, Eleven pipers piping, Ten lords a-leaping, Nine ladies dancing, Eight maids a-milking, Seven swans a-swimming, Six geese a-laying, Five gold rings, Four calling birds, Three French hens, Two turtle doves and

A partridge in a pear tree.


F#[edit]

let gifts = [
"And 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"
]
 
let days = [
"first"; "second"; "third"; "fourth"; "fifth"; "sixth"; "seventh"; "eighth";
"ninth"; "tenth"; "eleventh"; "twelfth"
]
 
let displayGifts day =
printfn "On the %s day of Christmas, my true love gave to me" days.[day]
if day = 0 then
printfn "A partridge in a pear tree"
else
List.iter (fun i -> printfn "%s" gifts.[i]) [day..(-1)..0]
printf "\n"
 
List.iter displayGifts [0..11]

Forth[edit]

Works with: GNU Forth
create ordinals s" first" 2, s" second" 2, s" third"    2, s" fourth" 2,
s" fifth" 2, s" sixth" 2, s" seventh" 2, s" eighth" 2,
s" ninth" 2, s" tenth" 2, s" eleventh" 2, s" twelfth" 2,
: ordinal ordinals swap 2 * cells + 2@ ;
 
create gifts s" A partridge in a pear tree." 2,
s" Two turtle doves and" 2,
s" Three French hens," 2,
s" Four calling birds," 2,
s" Five gold rings," 2,
s" Six geese a-laying," 2,
s" Seven swans a-swimming," 2,
s" Eight maids a-milking," 2,
s" Nine ladies dancing," 2,
s" Ten lords a-leaping," 2,
s" Eleven pipers piping," 2,
s" Twelve drummers drumming," 2,
: gift gifts swap 2 * cells + 2@ ;
 
: day
s" On the " type
dup ordinal type
s" day of Christmas, my true love sent to me:" type
cr
-1 swap -do
i gift type cr
1 -loop
cr
 ;
 
: main
12 0 do i day loop
;
 
main
bye
 
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

Fortran[edit]

Works with: FORTRAN version 77
      program twelve_days
 
character days(12)*8
data days/'first', 'second', 'third', 'fourth',
c 'fifth', 'sixth', 'seventh', 'eighth',
c 'ninth', 'tenth', 'eleventh', 'twelfth'/
 
character gifts(12)*27
data gifts/'A partridge in a pear tree.',
c 'Two turtle doves and',
c 'Three French hens,',
c 'Four calling birds,',
c 'Five gold rings,',
c 'Six geese a-laying,',
c 'Seven swans a-swimming,',
c 'Eight maids a-milking,',
c 'Nine ladies dancing,',
c 'Ten lords a-leaping,',
c 'Eleven pipers piping,',
c 'Twelve drummers drumming,'/
 
integer day, gift
 
do 10 day=1,12
write (*,*) 'On the ', trim(days(day)),
c ' day of Christmas, my true love sent to me:'
do 20 gift=day,1,-1
write (*,*) trim(gifts(gift))
20 continue
write(*,*)
10 continue
end
Output:
 On the first day of Christmas, my true love sent to me:
 A partridge in a pear tree.

 On the second day of Christmas, my true love sent to me:
 Two turtle doves and
 A partridge in a pear tree.

 [...]

 On the twelfth day of Christmas, my true love sent to me:
 Twelve drummers drumming,
 Eleven pipers piping,
 Ten lords a-leaping,
 Nine ladies dancing,
 Eight maids a-milking,
 Seven swans a-swimming,
 Six geese a-laying,
 Five gold rings,
 Four calling birds,
 Three French hens,
 Two turtle doves and
 A partridge in a pear tree.

FreeBASIC[edit]

' version 26-10-2016
' compile with: fbc -s console
 
Dim As ULong d, r
 
Dim As String days(1 To ...) = { "first", "second", "third", "fourth", _
"fifth", "sixth", "seventh", "eighth", _
"ninth", "tenth", "eleventh", "twelfth" }
 
Dim As String gifts(1 To ...) = { "", " 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" }
 
For d = 1 To 12
Print " On the " + days(d) + " day of Christmas"
Print " My true love gave to me:"
For r = d To 2 Step -1
Print gifts(r)
Next
' print "A partridge...", on the twelfth day print "And a partrige..."
Print " A" & IIf(d = 12, "nd a", "" ) & " partridge in a pear tree"
Print
Next
 
' empty keyboard buffer
While Inkey <> "" : Wend
Print : 'Print "hit any key to end program"
Sleep
End
Output:
 On the first day of Christmas
 My true love gave to me:
 A partridge in a pear tree

 On the second day of Christmas
 My true love gave to me:
 Two turtle doves
 A partridge in a pear tree

 ...

 On the twelfth day of Christmas
 My true love gave to me:
 Twelve drummers drumming
 Eleven pipers piping
 Ten lords a-leaping
 Nine ladies dancing
 Eight maids a-milking
 Seven swans a-swimming
 Six geese a-laying
 Five golden rings
 Four calling birds
 Three french hens
 Two turtle doves
 And a partridge in a pear tree

Go[edit]

package main
 
import (
"fmt"
"strings"
)
 
func main() {
numbers := []string{"first", "second", "third", "fourth", "fifth",
"sixth", "seventh", "eighth", "ninth", "tenth",
"eleventh", "twelfth"}
 
gifts := []string{"And a partridge in a pear tree", "Two turtle doves",
"Three French hens", "Four calling birds",
"Five gold rings", "Six geese a-laying",
"Seven swans a-swimming", "Eight maids a-miling",
"Nine ladies dancing", "Ten lords a-leaping",
"Eleven pipers piping", "Twelve drummers drumming"}
 
day := func(n int) {
fmt.Printf("On the %s day of Christams, my true love sent to me\n", numbers[n])
}
 
day(0)
fmt.Println(strings.Replace(gifts[0], "And a", "A", 1))
for d := 1; d < 12; d++ {
fmt.Println()
day(d)
for g := d; g >= 0; g-- {
fmt.Println(gifts[g])
}
}
}
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

Groovy[edit]

def presents = ['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']
['first', 'second', 'third', 'forth', 'fifth', 'sixth', 'seventh', 'eight', 'ninth', 'tenth', 'eleventh', 'Twelfth'].eachWithIndex{ day, dayIndex ->
println "On the $day day of Christmas"
println 'My true love gave to me:'
(dayIndex..0).each { p ->
print presents[p]
println p == 1 ? ' and' : ''
}
println()
}

Haskell[edit]

Translation of: F#
gifts :: [String]
gifts = [
"And 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," ]
 
days :: [String]
days = [
"first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth",
"ninth", "tenth", "eleventh", "twelfth" ]
 
verseOfTheDay :: Int -> IO ()
verseOfTheDay day = do
putStrLn $ "On the " ++ days !! day ++ " day of Christmas my true love gave to me... "
mapM_ putStrLn [dayGift day d | d <- [day, day-1..0]]
putStrLn ""
where dayGift 0 _ = "A partridge in a pear tree!"
dayGift _ gift = gifts !! gift
 
main :: IO ()
main = mapM_ verseOfTheDay [0..11]
 
Output:
On the first day of Christmas my true love gave to me... 
A partridge in a pear tree!

On the second day of Christmas my true love gave to me... 
Two turtle doves,
And a partridge in a pear tree!

On the third day of Christmas my true love gave to me... 
Three french hens,
Two turtle doves,
And a partridge in a pear tree!

On the fourth day of Christmas my true love gave to me... 
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree!

On the fifth day of Christmas my true love gave to me... 
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree!

On the sixth day of Christmas my true love gave to me... 
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree!

On the seventh day of Christmas my true love gave to me... 
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree!

On the eighth day of Christmas my true love gave to me... 
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree!

On the ninth day of Christmas my true love gave to me... 
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree!

On the tenth day of Christmas my true love gave to me... 
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree!

On the eleventh day of Christmas my true love gave to me... 
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree!

On the twelfth day of Christmas my true love gave to me... 
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree!

Icon and Unicon[edit]

Works in both languages.

procedure main()
days := ["first","second","third","fourth","fifth","sixth","seventh",
"eighth","ninth","tenth","eleventh","twelveth"]
gifts := ["A partridge in a pear tree.", "Two turtle doves and",
"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,"]
 
every write("\nOn the ",days[day := 1 to 12]," day of Christmas my true love gave to me:") do
every write(" ",gifts[day to 1 by -1])
end

J[edit]

require 'strings'  NB. not necessary for versions > j6
 
days=: ;:'first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth'
 
gifts=: <;.2 ] 0 : 0
And 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,
)
 
firstline=: 'On the ' , ,&(' day of Christmas, my true love gave to me',LF)
 
chgFirstVerse=: rplc&('nd a';'')&.>@{. , }.
 
makeVerses=: [: chgFirstVerse (firstline&.> days) ,&.> [: <@;@|.\ gifts"_
 
singCarol=: LF joinstring makeVerses

Java[edit]

public class TwelveDaysOfChristmas {
 
final static String[] gifts = {
"A partridge in a pear tree.", "Two turtle doves and",
"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",
"And a partridge in a pear tree.", "Two turtle doves"
};
 
final static String[] days = {
"first", "second", "third", "fourth", "fifth", "sixth", "seventh",
"eighth", "ninth", "tenth", "eleventh", "Twelfth"
};
 
public static void main(String[] args) {
for (int i = 0; i < days.length; i++) {
System.out.printf("%nOn the %s day of Christmas%n", days[i]);
System.out.println("My true love gave to me:");
for (int j = i; j >= 0; j--)
System.out.println(gifts[i == 11 && j < 2 ? j + 12 : j]);
}
}
}

JavaScript[edit]

 
var days = [
'first', 'second', 'third', 'fourth', 'fifth', 'sixth', 'seventh', 'eighth', 'ninth',
'tenth', 'eleventh', 'twelfth',
];
 
var 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"
];
 
var lines, verses = [], song;
 
for ( var i = 0; i < 12; i++ ) {
 
lines = [];
lines[0] = "On the " + days[i] + " day of Christmas, my true love gave to me";
 
var j = i + 1;
var k = 0;
while ( j-- > 0 )
lines[++k] = gifts[j];
 
 
verses[i] = lines.join('\n');
 
if ( i == 0 )
gifts[0] = "And a partridge in a pear tree";
 
}
 
song = verses.join('\n\n');
document.write(song);
 


Alternatively, in a functional style of JavaScript, we can define the ancient song "strPrepn the lstOrdinal[i] strUnit of strHoliday" as an expression, and return that expression in a human-legible and machine-parseable JSON string translation, for further analysis and processing :-)

JSON.stringify(
(function (
strPrepn,
strHoliday,
strUnit,
strRole,
strProcess,
strRecipient
) {
var lstOrdinal =
'first second third fourth fifth sixth\
seventh eighth ninth tenth eleventh twelfth'

.split(/\s+/),
lngUnits = lstOrdinal.length,
 
lstGoods =
'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'

.split(/\s{2,}/),
 
lstReversed = (function () {
var lst = lstGoods.slice(0);
return (lst.reverse(), lst);
})(),
 
strProvenance = [strRole, strProcess, strRecipient + ':'].join(' '),
 
strPenultimate = lstReversed[lngUnits - 2] + ' and',
strFinal = lstGoods[0];
 
return lstOrdinal.reduce(
function (sofar, day, i) {
return sofar.concat(
[
[
[ // abstraction of line 1
strPrepn,
'the',
lstOrdinal[i],
strUnit,
'of',
strHoliday
].join(' '),
strProvenance
].concat( // reversed descent through memory
(i > 1 ? [lstGoods[i]] : []).concat(
lstReversed.slice(
lngUnits - i,
lngUnits - 2
)
).concat( // penultimate line ends with 'and'
[
strPenultimate,
strFinal
].slice(i ? 0 : 1)
)
)
]
);
}, []
);
})(
'On', 'Christmas', 'day', 'my true love', 'gave to', 'me'
), null, 2
);

Note that the Google Closure compiler's translation of this would be half the size, but rather less legible. (It does make interesting suggestions though – the semi-colon segmentation of the verses below is a trick that might be worth remembering).

JSON.stringify(function (h, k, l, f, m, n) {
var c =
"first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth"
.split(" "),
d = c.length,
e =
"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"
.split(";"),
g = function () {
var b = e.slice(0);
return b.reverse(), b;
}(),
p = [f, m, n + ":"].join(" "),
q = g[d - 2] + " and",
r = e[0];
 
return c.reduce(function (b, f, a) {
return b.concat([[[h, "the", c[a], l, "of", k].join(" "), p].concat((1 <
a ? [e[a]] : []).concat(g.slice(d - a, d - 2)).concat([q, r].slice(a ?
0 : 1)))]);
}, []);
}("On", "Christmas", "day", "my true love", "gave to", "me"), null, 2);

Formatted JSON output (the expanded and Closure-compiled versions above both yield the same output).

[
[
"On the first day of Christmas",
"my true love gave to me:",
"A partridge in a pear tree."
],
[
"On the second day of Christmas",
"my true love gave to me:",
"Two turtle doves and",
"A partridge in a pear tree."
],
[
"On the third day of Christmas",
"my true love gave to me:",
"Three french hens",
"Two turtle doves and",
"A partridge in a pear tree."
],
[
"On the fourth day of Christmas",
"my true love gave to me:",
"Four calling birds",
"Three french hens",
"Two turtle doves and",
"A partridge in a pear tree."
],
[
"On the fifth day of Christmas",
"my true love gave to me:",
"Five golden rings",
"Four calling birds",
"Three french hens",
"Two turtle doves and",
"A partridge in a pear tree."
]
 
//... etc.
 
]

Kotlin[edit]

Translation of: C#
enum class Day {
first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth;
val header = "On the " + this + " day of Christmas, my true love sent to me\n\t"
}
 
fun main(x: Array<String>) {
val gifts = listOf("A partridge in a pear tree",
"Two turtle doves and",
"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")
 
Day.values().forEachIndexed { i, d -> println(d.header + gifts.slice(0..i).asReversed().joinToString("\n\t")) }
}

[edit]

make "numbers [first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth]
make "gifts [[And a partridge in a pear tree] [Two turtle doves] [Three French hens]
[Four calling birds] [Five gold rings] [Six geese a-laying]
[Seven swans a-swimming] [Eight maids a-miling] [Nine ladies dancing]
[Ten lords a-leaping] [Eleven pipers piping] [Twelve drummers drumming]]
 
to nth :n
print (sentence [On the] (item :n :numbers) [day of Christmas, my true love sent to me])
end
 
nth 1
print [A partridge in a pear tree]
 
for [d 2 12] [
print []
nth :d
for [g :d 1] [
print item :g gifts
]
]
bye
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

LOLCODE[edit]

Works with: LCI 0.10
CAN HAS STDIO?
HAI 1.2
 
I HAS A Dayz ITZ A BUKKIT
Dayz HAS A SRS 1 ITZ "first"
Dayz HAS A SRS 2 ITZ "second"
Dayz HAS A SRS 3 ITZ "third"
Dayz HAS A SRS 4 ITZ "fourth"
Dayz HAS A SRS 5 ITZ "fifth"
Dayz HAS A SRS 6 ITZ "sixth"
Dayz HAS A SRS 7 ITZ "seventh"
Dayz HAS A SRS 8 ITZ "eighth"
Dayz HAS A SRS 9 ITZ "ninth"
Dayz HAS A SRS 10 ITZ "tenth"
Dayz HAS A SRS 11 ITZ "eleventh"
Dayz HAS A SRS 12 ITZ "twelfth"
 
I HAS A Prezents ITZ A BUKKIT
Prezents HAS A SRS 1 ITZ "A partridge in a pear tree"
Prezents HAS A SRS 2 ITZ "Two turtle doves"
Prezents HAS A SRS 3 ITZ "Three French hens"
Prezents HAS A SRS 4 ITZ "Four calling birds"
Prezents HAS A SRS 5 ITZ "Five gold rings"
Prezents HAS A SRS 6 ITZ "Six geese a-laying"
Prezents HAS A SRS 7 ITZ "Seven swans a-swimming"
Prezents HAS A SRS 8 ITZ "Eight maids a-milking"
Prezents HAS A SRS 9 ITZ "Nine ladies dancing"
Prezents HAS A SRS 10 ITZ "Ten lords a-leaping"
Prezents HAS A SRS 11 ITZ "Eleven pipers piping"
Prezents HAS A SRS 12 ITZ "Twelve drummers drumming"
 
IM IN YR Outer UPPIN YR i WILE DIFFRINT i AN 12
I HAS A Day ITZ SUM OF i AN 1
VISIBLE "On the " !
VISIBLE Dayz'Z SRS Day !
VISIBLE " day of Christmas, my true love sent to me"
IM IN YR Inner UPPIN YR j WILE DIFFRINT j AN Day
I HAS A Count ITZ DIFFERENCE OF Day AN j
VISIBLE Prezents'Z SRS Count
IM OUTTA YR Inner
BOTH SAEM i AN 0
O RLY?
YA RLY
Prezents'Z SRS 1 R "And a partridge in a pear tree"
OIC
DIFFRINT i AN 11
O RLY?
YA RLY
VISIBLE ""
OIC
IM OUTTA YR Outer
 
KTHXBYE
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

Lua[edit]

 
local days = {
'first', 'second', 'third', 'fourth', 'fifth', 'sixth', 'seventh', 'eighth', 'ninth',
'tenth', 'eleventh', 'twelfth',
}
 
local 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",
}
 
local verses = {}
 
for i = 1, 12 do
local lines = {}
lines[1] = "On the " .. days[i] .. " day of Christmas, my true love gave to me"
 
local j = i
local k = 2
repeat
lines[k] = gifts[j]
k = k + 1
j = j - 1
until j == 0
 
verses[i] = table.concat(lines, '\n')
end
 
print(table.concat(verses, '\n\n'))
 

Maple[edit]

gifts := ["Twelve drummers drumming",
"Eleven pipers piping", "Ten lords a-leaping",
"Nine ladies dancing", "Eight maids a-milking",
"Seven swans a-swimming", "Six geese a-laying",
"Five golden rings", "Four calling birds",
"Three french hens", "Two turtle doves and", "A partridge in a pear tree"]:
days := ["first", "second", "third", "fourth", "fifth", "sixth",
"seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth"]:
for i to 12 do
printf("On the %s day of Christmas\nMy true love gave to me:\n", days[i]);
for j from 13-i to 12 do
printf("%s\n", gifts[j]);
end do;
printf("\n");
end do;
Output:
On the first day of Christmas
My true love gave to me:
A partridge in a pear tree

On the second day of Christmas
My true love gave to me:
Two turtle doves and
A partridge in a pear tree

On the third day of Christmas
My true love gave to me:
Three french hens
Two turtle doves and
A partridge in a pear tree

...

On the eleventh day of Christmas
My true love gave to me:
Eleven pipers piping
Ten lords a-leaping
Nine ladies dancing
Eight maids a-milking
Seven swans a-swimming
Six geese a-laying
Five golden rings
Four calling birds
Three french hens
Two turtle doves and
A partridge in a pear tree

On the twelfth day of Christmas
My true love gave to me:
Twelve drummers drumming
Eleven pipers piping
Ten lords a-leaping
Nine ladies dancing
Eight maids a-milking
Seven swans a-swimming
Six geese a-laying
Five golden rings
Four calling birds
Three french hens
Two turtle doves and
A partridge in a pear tree

Mathematica[edit]

 
daysarray = {"first", "second", "third", "fourth", "fifth", "sixth",
"seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth"};
giftsarray = {"And 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"};
Do[Print[StringForm[
"On the `1` day of Christmas, my true love gave to me: `2`",
daysarray[[i]],
If[i == 1, "A partridge in a pear tree.",
Row[Reverse[Take[giftsarray, i]], ","]]]], {i, 1, 12}]
 
Output:
On the first day of Christmas, my true love gave to me: 
A partridge in a pear tree.

On the second day of Christmas, my true love gave to me: 
Two turtle doves,
And a partridge in a pear tree.

On the third day of Christmas, my true love gave to me: 
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the fourth day of Christmas, my true love gave to me: 
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the fifth day of Christmas, my true love gave to me: 
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the sixth day of Christmas, my true love gave to me: 
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the seventh day of Christmas, my true love gave to me: 
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the eighth day of Christmas, my true love gave to me: 
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the ninth day of Christmas, my true love gave to me: 
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the tenth day of Christmas, my true love gave to me: 
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the eleventh day of Christmas, my true love gave to me: 
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the twelfth day of Christmas, my true love gave to me: 
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GOLDEN RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

Nim[edit]

Translation of: Python
import strutils, algorithm
 
const
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""".splitLines()
 
days = "first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth".split(' ')
 
for n, day in days:
var g = (gifts[0..n])
reverse(g)
echo "\nOn the ", day, " day of Christmas\nMy true love gave to me:\n" &
g[0 .. -2].join("\n") &
(if n > 0: " and\n" & g[g.high] else: capitalize(g[g.high]))

Objeck[edit]

Translation of: C sharp – C#
 
class TwelveDaysOfChristmas {
function : Main(args : String[]) ~ Nil {
days := ["first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth",
"tenth", "eleventh", "twelfth"];
 
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"];
 
for(i := 0; i < days->Size(); i+=1;) {
IO.Console->Print("On the ")->Print(days[i])->PrintLine(" day of Christmas, my true love gave to me");
 
j := i + 1;
while(j > 0 ) {
j -= 1;
gifts[j]->PrintLine();
};
 
IO.Console->PrintLine();
 
if (i = 0) {
gifts[0] := "And a partridge in a pear tree";
};
};
}
}
 

PARI/GP[edit]

days=["first","second","third","fourth","fifth","sixth","seventh","eighth","ninth","tenth","eleventh","twelfth"]; 
gifts=["And 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"];
{
for(i=1,#days,
print("On the "days[i]" day of Christmas, my true love gave to me:");
forstep(j=i,2,-1,print("\t"gifts[j]", "));
print(if(i==1,"\tA partridge in a pear tree.",Str("\t",gifts[1])))
)
}
Output:
On the first day of Christmas, my true love gave to me:
        A partridge in a pear tree.
On the second day of Christmas, my true love gave to me:
        Two turtle doves,
        And a partridge in a pear tree.
[...]
On the twelfth day of Christmas, my true love gave to me:
        Twelve drummers drumming,
        Eleven pipers piping,
        Ten lords a-leaping,
        Nine ladies dancing,
        Eight maids a-milking,
        Seven swans a-swimming,
        Six geese a-laying,
        Five golden rings,
        Four calling birds,
        Three french hens,
        Two turtle doves,
        And a partridge in a pear tree.

Pascal[edit]

This should work with any modern Pascal implementation that has a string type, e.g. Free Pascal.

program twelve_days(output);
 
const
days: array[1..12] of string =
( 'first', 'second', 'third', 'fourth', 'fifth', 'sixth',
'seventh', 'eighth', 'ninth', 'tenth', 'eleventh', 'twelfth' );
 
gifts: array[1..12] of string =
( 'A partridge in a pear tree.',
'Two turtle doves and',
'Three French hens,',
'Four calling birds,',
'Five gold 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,' );
 
var
day, gift: integer;
 
begin
for day := 1 to 12 do begin
writeln('On the ', days[day], ' day of Christmas, my true love sent to me:');
for gift := day downto 1 do
writeln(gifts[gift]);
writeln
end
end.
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

Here's a version that works in ISO Standard Pascal, albeit with extraneous spaces in the output:

program twelve_days_iso(output);
 
const
days: array[1..12, 1..8] of char =
( 'first ', 'second ', 'third ', 'fourth ',
'fifth ', 'sixth ', 'seventh ', 'eighth ',
'ninth ', 'tenth ', 'eleventh', 'twelfth ' );
 
gifts: array[1..12, 1..27] of char =
( 'A partridge in a pear tree.',
'Two turtle doves and ',
'Three French hens, ',
'Four calling birds, ',
'Five gold 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, ' );
 
var
day, gift: integer;
 
begin
for day := 1 to 12 do begin
writeln('On the ', days[day], ' day of Christmas, my true love gave to me:');
for gift := day downto 1 do
writeln(gifts[gift]);
writeln
end
end.
Output:
On the first    day of Christmas, my true love gave to me:
A partridge in a pear tree.

On the second   day of Christmas, my true love gave to me:
Two turtle doves and       
A partridge in a pear tree.

[...]

On the twelfth  day of Christmas, my true love gave to me:
Twelve drummers drumming,  
Eleven pipers piping,      
Ten lords a-leaping,       
Nine ladies dancing,       
Eight maids a-milking,     
Seven swans a-swimming,    
Six geese a-laying,        
Five gold rings,           
Four calling birds,        
Three French hens,         
Two turtle doves and       
A partridge in a pear tree.

Perl[edit]

use v5.10; 
 
my @days = qw{ first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth };
 
chomp ( my @gifts = grep { /\S/ } <DATA> );
 
while ( my $day = shift @days ) {
say "On the $day day of Christmas,\nMy true love gave to me:";
say for map { $day eq 'first' ? s/And a/A/r : $_ } @gifts[@days .. @gifts-1];
say "";
}
 
__DATA__
Twelve drummers drumming
Eleven pipers piping
Ten lords a-leaping
Nine ladies dancing
Eight maids a-milking
Seven swans a-swimming
Six geese a-laying
Five golden rings
Four calling birds
Three french hens
Two turtle doves
And a partridge in a pear tree.
Output:
On the first day of Christmas,
My true love gave to me:
A partridge in a pear tree.

On the second day of Christmas,
My true love gave to me:
Two turtle doves
And a partridge in a pear tree.

...

On the twelfth day of Christmas,
My true love gave to me:
Twelve drummers drumming
Eleven pipers piping
Ten lords a-leaping
Nine ladies dancing
Eight maids a-milking
Seven swans a-swimming
Six geese a-laying
Five golden rings
Four calling birds
Three french hens
Two turtle doves
And a partridge in a pear tree.

Perl 6[edit]

my @days = <first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth>;
 
my @gifts = lines q:to/END/;
And 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,
END
 
sub nth($n) { say "On the @days[$n] day of Christmas, my true love gave to me:" }
 
nth(0);
say @gifts[0].subst('And a','A');
 
for 1 ... 11 -> $d {
say '';
nth($d);
say @gifts[$_] for $d ... 0;
}
Output:
On the first day of Christmas, my true love gave to me:
  A partridge in a pear tree.

On the second day of Christmas, my true love gave to me:
  Two turtle doves,
  And a partridge in a pear tree.

On the third day of Christmas, my true love gave to me:
  Three french hens,
  Two turtle doves,
  And a partridge in a pear tree.

On the fourth day of Christmas, my true love gave to me:
  Four calling birds,
  Three french hens,
  Two turtle doves,
  And a partridge in a pear tree.
.
.
.
On the twelfth day of Christmas, my true love gave to me:
  Twelve drummers drumming,
  Eleven pipers piping,
  Ten lords a-leaping,
  Nine ladies dancing,
  Eight maids a-milking,
  Seven swans a-swimming,
  Six geese a-laying,
  Five golden rings,
  Four calling birds,
  Three french hens,
  Two turtle doves,
  And a partridge in a pear tree.

PicoLisp[edit]

(de days
first second third fourth fifth sixth
seventh eight ninth tenth eleventh twelfth )
 
(de texts
"A partridge in a pear tree."
"Two turtle doves and"
"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" )
 
(for (X . Day) days
(prinl "On the " Day " day of Christmas")
(prinl "My true love game to me:")
(for (Y X (gt0 Y) (dec Y))
(prinl
(if (and (= 12 X) (= 1 Y))
"And a partridge in a pear tree."
(get texts Y)) ) )
(prinl) )
 
(bye)

PHP[edit]

 
<?php
 
header("Content-Type: text/plain; charset=UTF-8");
 
$days = array(
'first', 'second', 'third', 'fourth', 'fifth', 'sixth', 'seventh', 'eighth', 'ninth',
'tenth', 'eleventh', 'twelfth',
);
 
$gifts = array(
"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"
);
 
$verses = [];
 
for ( $i = 0; $i < 12; $i++ ) {
$lines = [];
$lines[0] = "On the {$days[$i]} day of Christmas, my true love gave to me";
 
$j = $i;
$k = 0;
while ( $j >= 0 ) {
$lines[++$k] = $gifts[$j];
$j--;
}
 
$verses[$i] = implode(PHP_EOL, $lines);
 
if ( $i == 0 )
$gifts[0] = "And a partridge in a pear tree";
}
 
echo implode(PHP_EOL . PHP_EOL, $verses);
 
?>
 

PowerShell[edit]

$days = @{
1 = "first";
2 = "second";
3 = "third";
4 = "fourth";
5 = "fifth";
6 = "sixth";
7 = "seventh";
8 = "eight";
9 = "ninth";
10 = "tenth";
11 = "eleventh";
12 = "twelfth";
}
 
$gifts = @{
1 = 'A partridge in a pear tree';
2 = 'Two turtle doves';
3 = 'Three french hens';
4 = 'Four calling birds';
5 = 'Five golden rings';
6 = 'Six geese a-laying';
7 = 'Seven swans a-swimming';
8 = 'Eight maids a-milking';
9 = 'Nine ladies dancing';
10 = 'Ten lords a-leaping';
11 = 'Eleven pipers piping';
12 = 'Twelve drummers drumming';
}
 
1 .. 12 | % {
"On the $($days[$_]) day of Christmas`nMy true love gave to me"
$_ .. 1 | % {
$gift = $gifts[$_]
if ($_ -eq 2) { $gift += " and" }
$gift
}
""
}
Output:
On the first day of Christmas
My true love gave to me
A partridge in a pear tree

On the second day of Christmas
My true love gave to me
Two turtle doves and
A partridge in a pear tree

...

On the twelfth day of Christmas
My true love gave to me
Twelve drummers drumming
Eleven pipers piping
Ten lords a-leaping
Nine ladies dancing
Eight maids a-milking
Seven swans a-swimming
Six geese a-laying
Five golden rings
Four calling birds
Three french hens
Two turtle doves and
A partridge in a pear tree

Prolog[edit]

day(1, 'first').
day(2, 'second').
day(3, 'third').
day(4, 'fourth').
day(5, 'fifth').
day(6, 'sixth').
day(7, 'seventh').
day(8, 'eighth').
day(9, 'ninth').
day(10, 'tenth').
day(11, 'eleventh').
day(12, 'twelfth').
 
gift(1, 'A partridge in a pear tree.').
gift(2, 'Two turtle doves and').
gift(3, 'Three French hens,').
gift(4, 'Four calling birds,').
gift(5, 'Five gold rings,').
gift(6, 'Six geese a-laying,').
gift(7, 'Seven swans a-swimming,').
gift(8, 'Eight maids a-milking,').
gift(9, 'Nine ladies dancing,').
gift(10, 'Ten lords a-leaping,').
gift(11, 'Eleven pipers piping,').
gift(12, 'Twelve drummers drumming,').
 
giftsFor(0, []) :- !.
giftsFor(N, [H|T]) :- gift(N, H), M is N-1, giftsFor(M,T).
 
writeln(S) :- write(S), write('\n').
 
writeList([]) :- writeln(''), !.
writeList([H|T]) :- writeln(H), writeList(T).
 
writeGifts(N) :- day(N, Nth), write('On the '), write(Nth),
writeln(' day of Christmas, my true love sent to me:'),
giftsFor(N,L), writeList(L).
 
writeLoop(0) :- !.
writeLoop(N) :- Day is 13 - N, writeGifts(Day), M is N - 1, writeLoop(M).
 
main :- writeLoop(12), halt.
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

Python[edit]

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'''
.split('\n')
 
days = '''first second third fourth fifth
sixth seventh eighth ninth tenth
eleventh twelfth'''
.split()
 
for n, day in enumerate(days, 1):
g = gifts[:n][::-1]
print(('\nOn the %s day of Christmas\nMy true love gave to me:\n' % day) +
'\n'.join(g[:-1]) +
(' and\n' + g[-1] if n > 1 else g[-1].capitalize()))
Output:
On the first day of Christmas
My true love gave to me:
A partridge in a pear tree.

On the second day of Christmas
My true love gave to me:
Two turtle doves and
A partridge in a pear tree.

On the third day of Christmas
My true love gave to me:
Three french hens
Two turtle doves and
A partridge in a pear tree.

On the fourth day of Christmas
My true love gave to me:
Four calling birds
Three french hens
Two turtle doves and
A partridge in a pear tree.
.
.
.

On the twelfth day of Christmas
My true love gave to me:
Twelve drummers drumming
Eleven pipers piping
Ten lords a-leaping
Nine ladies dancing
Eight maids a-milking
Seven swans a-swimming
Six geese a-laying
Five golden rings
Four calling birds
Three french hens
Two turtle doves and
A partridge in a pear tree.

Racket[edit]

This version:

  • doesn't capitalise the word Twelfth
  • capitalises the French   (in French hen)
  • capitalised True Love as it may save me a lot of grief when I get home.
  • British Variant: changes golden to go-old rings. Anyone who still has enough breath left to sing the second syllable after sustaining the first syllable of golden simply wasn't making enough effort in the first place.
  • British Variant: capitalises FIVE GO-OLD RINGS since it needs to be sung at top volume. If you want to change this back; the source is there. But I guarantee you won't have as much fun singing it.
#lang racket
(define (ordinal-text d)
(vector-ref
(vector
"zeroth" "first" "second" "third" "fourth"
"fifth" "sixth" "seventh" "eighth" "ninth"
"tenth" "eleventh" "twelfth")
d))
 
(define (on-the... day)
(printf "On the ~a day of Christmas,~%" (ordinal-text day))
(printf "My True Love gave to me,~%"))
 
(define (prezzy prezzy-line day)
(match prezzy-line
[1 (string-append (if (= day 1) "A " "And a")" partridge in a pear tree")]
[2 "Two turtle doves"]
[3 "Three French hens"]
[4 "Four calling birds"]
[5 "FIVE GO-OLD RINGS"]
[6 "Six geese a-laying"]
[7 "Seven swans a-swimming"]
[8 "Eight maids a-milking"]
[9 "Nine ladies dancing"]
[10 "Ten lords a-leaping"]
[11 "Eleven pipers piping"]
[12 "Twelve drummers drumming"]))
 
(define (line-end prezzy-line day)
(match* (day prezzy-line) [(12 1) "."] [(x 1) ".\n"] [(_ _) ","]))
 
(for ((day (sequence-map add1 (in-range 12)))
#:when (on-the... day)
(prezzy-line (in-range day 0 -1)))
(printf "~a~a~%" (prezzy prezzy-line day) (line-end prezzy-line day)))
Output:
On the first day of Christmas,
My True Love gave to me,
A  partridge in a pear tree.

On the second day of Christmas,
My True Love gave to me,
Two turtle doves,
And a partridge in a pear tree.

On the third day of Christmas,
My True Love gave to me,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the fourth day of Christmas,
My True Love gave to me,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the fifth day of Christmas,
My True Love gave to me,
FIVE GO-OLD RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the sixth day of Christmas,
My True Love gave to me,
Six geese a-laying,
FIVE GO-OLD RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

On the seventh day of Christmas, ...
On the eighth day of Christmas, ...
On the ninth day of Christmas, ...
On the tenth day of Christmas, ...
On the eleventh day of Christmas, ...

On the twelfth day of Christmas,
My True Love gave to me,
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
FIVE GO-OLD RINGS,
Four calling birds,
Three french hens,
Two turtle doves,
And a partridge in a pear tree.

REXX[edit]

This version:

  •   doesn't capitalize the word   Twelfth
  •   capitalizes the   French   (in French hen)
  •   capitalized   True Love   as it (may) refer to a deity
  •   added indentation to make verses resemble song lyrics
/*REXX program displays the verses of the song:   "The 12 days of Christmas". */
@='first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth'
pad=left('',20) /*used for indenting the shown verses.*/
 
g.1= 'A partridge in a pear-tree.'; g.7 = 'Seven swans a-swimming,'
g.2= 'Two Turtle Doves, and'  ; g.8 = 'Eight maids a-milking,'
g.3= 'Three French Hens,'  ; g.9 = 'Nine ladies dancing,'
g.4= 'Four Calling Birds,'  ; g.10= 'Ten lords a-leaping,'
g.5= 'Five Golden Rings,'  ; g.11= 'Eleven pipers piping,'
g.6= 'Six geese a-laying,'  ; g.12= 'Twelve drummers drumming,'
 
do day=1 for 12
say pad 'On the' word(@,day) 'day of Christmas' /*display line 1 prologue*/
say pad 'My True Love gave to me:' /* " " 2 " */
do j=day to 1 by -1; say pad g.j; end /* " the daily gifts*/
say /*add a blank line between the verses. */
end /*day*/ /*stick a fork in it, we're all done. */
Output:
                     On the first day of Christmas
                     My True Love gave to me:
                     A partridge in a pear-tree.

                     On the second day of Christmas
                     My True Love gave to me:
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

                     On the third day of Christmas
                     My True Love gave to me:
                     Three French Hens,
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

                     On the fourth day of Christmas
                     My True Love gave to me:
                     Four Calling Birds,
                     Three French Hens,
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

                     On the fifth day of Christmas
                     My True Love gave to me:
                     Five Golden Rings,
                     Four Calling Birds,
                     Three French Hens,
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

                     On the sixth day of Christmas
                     My True Love gave to me:
                     Six geese a-laying,
                     Five Golden Rings,
                     Four Calling Birds,
                     Three French Hens,
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

                     On the seventh day of Christmas
                     My True Love gave to me:
                     Seven swans a-swimming,
                     Six geese a-laying,
                     Five Golden Rings,
                     Four Calling Birds,
                     Three French Hens,
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

                     On the eighth day of Christmas
                     My True Love gave to me:
                     Eight maids a-milking,
                     Seven swans a-swimming,
                     Six geese a-laying,
                     Five Golden Rings,
                     Four Calling Birds,
                     Three French Hens,
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

                     On the ninth day of Christmas
                     My True Love gave to me:
                     Nine ladies dancing,
                     Eight maids a-milking,
                     Seven swans a-swimming,
                     Six geese a-laying,
                     Five Golden Rings,
                     Four Calling Birds,
                     Three French Hens,
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

                     On the tenth day of Christmas
                     My True Love gave to me:
                     Ten lords a-leaping,
                     Nine ladies dancing,
                     Eight maids a-milking,
                     Seven swans a-swimming,
                     Six geese a-laying,
                     Five Golden Rings,
                     Four Calling Birds,
                     Three French Hens,
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

                     On the eleventh day of Christmas
                     My True Love gave to me:
                     Eleven pipers piping,
                     Ten lords a-leaping,
                     Nine ladies dancing,
                     Eight maids a-milking,
                     Seven swans a-swimming,
                     Six geese a-laying,
                     Five Golden Rings,
                     Four Calling Birds,
                     Three French Hens,
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

                     On the twelfth day of Christmas
                     My True Love gave to me:
                     Twelve drummers drumming,
                     Eleven pipers piping,
                     Ten lords a-leaping,
                     Nine ladies dancing,
                     Eight maids a-milking,
                     Seven swans a-swimming,
                     Six geese a-laying,
                     Five Golden Rings,
                     Four Calling Birds,
                     Three French Hens,
                     Two Turtle Doves, and
                     A partridge in a pear-tree.

Ruby[edit]

gifts = "A partridge in a pear tree
Two turtle doves and
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"
.split("\n")
 
days = %w(first second third fourth fifth sixth
seventh eighth ninth tenth eleventh twelfth)
 
days.each_with_index do |day, i|
puts "On the #{day} day of Christmas"
puts "My true love gave to me:"
puts gifts[0, i+1].reverse
puts
end

Run BASIC[edit]

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"
 
days$ = "first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth"
 
for i = 1 to 12
print "On the ";word$(days$,i," ");" day of Christmas"
print "My true love gave to me:"
for j = i to 1 step -1
if i > 1 and j = 1 then print "and ";
print mid$(word$(gifts$,j,","),2)
next j
print
next i
 
Output:
On the first day of Christmas
My true love gave to me:
A partridge in a pear tree.
.
.
On the twelfth day of Christmas
My true love gave to me:
Twelve drummers drumming
Eleven pipers piping
Ten lords a-leaping
Nine ladies dancing
Eight maids a-milking
Seven swans a-swimming
Six geese a-laying
Five golden rings
Four calling birds
Three french hens
Two turtle doves
and A partridge in a pear tree.

Rust[edit]

fn showpresents(count : usize) {
let days = ["second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth",
"tenth", "eleventh", "twelfth"];
 
let presents = ["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"];
 
println!("On the {} day of Christmas my true love gave to me {}", days[count-1], presents[count-1]);
if count > 0 {
let mut j = count-1;
while j > 0 {
println!("{}", presents[j-1]);
j -= 1;
 
}
}
println!("And a partridge in a pear tree \n");
}
 
fn main() {
let mut count = 0;
while count < 12 {
match count {
0 => println!("On the first day of Christmas my true love gave to me a partridge in a pear tree"),
_ => showpresents(count)
};
count += 1;
}
}

Scala[edit]

val gifts = Array(
"A partridge in a pear tree.",
"Two turtle doves and",
"Three French hens,",
"Four calling birds,",
"Five gold 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,"
)
 
val days = Array(
"first", "second", "third", "fourth", "fifth", "sixth",
"seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth"
)
 
val giftsForDay = (day: Int) =>
"On the %s day of Christmas, my true love gave to me:\n".format(days(day)) +
gifts.take(day+1).reverse.mkString("\n") + "\n"
 
(0 until 12).map(giftsForDay andThen println)
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

Seed7[edit]

$ include "seed7_05.s7i";
 
const proc: main is func
local
const array string: gifts is [] (
"A partridge in a pear tree.", "Two turtle doves and",
"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");
const array string: days is [] (
"first", "second", "third", "fourth", "fifth", "sixth",
"seventh", "eighth", "ninth", "tenth", "eleventh", "Twelfth");
var integer: day is 0;
var integer: gift is 0;
begin
for day range 1 to length(days) do
writeln;
writeln("On the " <& days[day] <& " day of Christmas,");
writeln("My true love gave to me:");
for gift range day downto 1 do
writeln(gifts[gift]);
end for;
end for;
end func;
Output:
On the first day of Christmas,
My true love gave to me:
A partridge in a pear tree.

On the second day of Christmas,
My true love gave to me:
Two turtle doves and
A partridge in a pear tree.

On the third day of Christmas,
My true love gave to me:
Three french hens
Two turtle doves and
A partridge in a pear tree.

...

On the Twelfth day of Christmas,
My true love gave to me:
Twelve drummers drumming
Eleven pipers piping
Ten lords a-leaping
Nine ladies dancing
Eight maids a-milking
Seven swans a-swimming
Six geese a-laying
Five golden rings
Four calling birds
Three french hens
Two turtle doves and
A partridge in a pear tree.

Self[edit]

Nicely factored:

(|
parent* = traits oddball.
 
gifts = (
'And a partridge in a pear tree' &
'Two turtle doves' &
'Three french hens' &
'Four calling birds' &
'FIVE GO-OLD 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'
) asSequence.
 
days = (
'first' & 'second' & 'third' & 'fourth' &
'fifth' & 'sixth' & 'seventh' & 'eighth' &
'ninth' & 'tenth' & 'eleventh' & 'twelfth'
) asSequence.
 
intro: i = ( 'On the ', (days at: i), ' day of Christmas, my true love gave to me:').
gifts: i = ( i = 0 ifTrue: [sequence copyAddFirst: 'A partridge in a pear tree' ]
False: [(gifts slice: 0@(i + 1)) reverse ]).
verse: i = ( ((sequence copyAddFirst: intro: i) addAll: gifts: i) addLast: '' ).
value = ( (days gather: [|:d. :i| verse: i ]) asSequence joinUsing: '\n' )
 
|) value printLine
 

Sidef[edit]

Translation of: Perl 6
var days = <first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth>;
 
var gifts = <<'EOT'.lines;
And 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,
EOT
 
func nth(n) { say "On the #{days[n]} day of Christmas, my true love gave to me:" };
 
nth(0);
say gifts[0].sub('And a', 'A');
 
range(1, 11).each { |d|
say '';
nth(d);
d.downto(0).each { |i|
say gifts[i];
}
}
Output:
On the first day of Christmas, my true love gave to me:
  A partridge in a pear tree.

On the second day of Christmas, my true love gave to me:
  Two turtle doves,
  And a partridge in a pear tree.

On the third day of Christmas, my true love gave to me:
  Three french hens,
  Two turtle doves,
  And a partridge in a pear tree.

On the fourth day of Christmas, my true love gave to me:
  Four calling birds,
  Three french hens,
  Two turtle doves,
  And a partridge in a pear tree.
.
.
.
On the twelfth day of Christmas, my true love gave to me:
  Twelve drummers drumming,
  Eleven pipers piping,
  Ten lords a-leaping,
  Nine ladies dancing,
  Eight maids a-milking,
  Seven swans a-swimming,
  Six geese a-laying,
  Five golden rings,
  Four calling birds,
  Three french hens,
  Two turtle doves,
  And a partridge in a pear tree.

Simula[edit]

Works with: GNU Cim
Begin
Text Array days(1:12), gifts(1:12);
Integer day, gift;
 
days(1)  :- "first";
days(2)  :- "second";
days(3)  :- "third";
days(4)  :- "fourth";
days(5)  :- "fifth";
days(6)  :- "sixth";
days(7)  :- "seventh";
days(8)  :- "eighth";
days(9)  :- "ninth";
days(10) :- "tenth";
days(11) :- "eleventh";
days(12) :- "twelfth";
 
 
gifts(1)  :- "A partridge in a pear tree.";
gifts(2)  :- "Two turtle doves and";
gifts(3)  :- "Three French hens,";
gifts(4)  :- "Four calling birds,";
gifts(5)  :- "Five gold rings,";
gifts(6)  :- "Six geese a-laying,";
gifts(7)  :- "Seven swans a-swimming,";
gifts(8)  :- "Eight maids a-milking,";
gifts(9)  :- "Nine ladies dancing,";
gifts(10) :- "Ten lords a-leaping,";
gifts(11) :- "Eleven pipers piping,";
gifts(12) :- "Twelve drummers drumming,";
 
For day := 1 Step 1 Until 12 Do Begin
outtext("On the "); outtext(days(day));
outtext(" day of Christmas, my true love sent to me:"); outimage;
For gift := day Step -1 Until 1 Do Begin
outtext(gifts(gift)); outimage
End;
outimage
End
End
 
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

Smalltalk[edit]

Works with: GNU Smalltalk
Object subclass: TwelveDays [
Ordinals := #('first' 'second' 'third' 'fourth' 'fifth' 'sixth'
'seventh' 'eighth' 'ninth' 'tenth' 'eleventh' 'twelfth').
 
Gifts := #( 'A partridge in a pear tree.' 'Two turtle doves and'
'Three French hens,' 'Four calling birds,'
'Five gold 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,' ).
]
 
TwelveDays class extend [
giftsFor: day [
|newLine ordinal giftList|
newLine := $<10> asString.
ordinal := Ordinals at: day.
giftList := (Gifts first: day) reverse.
 
^'On the ', ordinal, ' day of Christmas, my true love sent to me:',
newLine, (giftList join: newLine), newLine.
]
]
 
1 to: 12 do: [:i |
Transcript show: (TwelveDays giftsFor: i); cr.
].
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

Snobol[edit]

Works with: CSNOBOL4
	DAYS = ARRAY('12')
DAYS<1> = 'first'
DAYS<2> = 'second'
DAYS<3> = 'third'
DAYS<4> = 'fourth'
DAYS<5> = 'fifth'
DAYS<6> = 'sixth'
DAYS<7> = 'seventh'
DAYS<8> = 'eighth'
DAYS<9> = 'ninth'
DAYS<10> = 'tenth'
DAYS<11> = 'eleventh'
DAYS<12> = 'twelfth'
 
GIFTS = ARRAY('12')
GIFTS<1> = 'A partridge in a pear tree.'
GIFTS<2> = 'Two turtle doves and'
GIFTS<3> = 'Three French hens,'
GIFTS<4> = 'Four calling birds,'
GIFTS<5> = 'Five gold rings,'
GIFTS<6> = 'Six geese a-laying,'
GIFTS<7> = 'Seven swans a-swimming,'
GIFTS<8> = 'Eight maids a-milking,'
GIFTS<9> = 'Nine ladies dancing,'
GIFTS<10> = 'Ten lords a-leaping,'
GIFTS<11> = 'Eleven pipers piping,'
GIFTS<12> = 'Twelve drummers drumming,'
 
DAY = 1
OUTER LE(DAY,12)  :F(END)
INTRO = 'On the NTH day of Christmas, my true love sent to me:'
INTRO 'NTH' = DAYS<DAY>
OUTPUT = INTRO
GIFT = DAY
INNER GE(GIFT,1)  :F(NEXT)
OUTPUT = GIFTS<GIFT>
GIFT = GIFT - 1  :(INNER)
NEXT OUTPUT = ''
DAY = DAY + 1  :(OUTER)
END
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

SQL[edit]

Demonstration of Oracle 12c "with" clause enhancement.

 
WITH
FUNCTION nl ( s IN varchar2 )
RETURN varchar2
IS
BEGIN
RETURN chr(10) || s;
END nl;
FUNCTION v ( d NUMBER, x NUMBER, g IN varchar2 )
RETURN varchar2
IS
BEGIN
RETURN
CASE WHEN d >= x THEN nl (g) END;
END v;
SELECT 'On the '
|| to_char(to_date(level,'j'),'jspth' )
|| ' day of Christmas,'
|| nl( 'my true love sent to me:')
|| v ( level, 12, 'Twelve drummers drumming,' )
|| v ( level, 11, 'Eleven pipers piping,' )
|| v ( level, 10, 'Ten lords a-leaping,' )
|| v ( level, 9, 'Nine ladies dancing,' )
|| v ( level, 8, 'Eight maids a-milking,' )
|| v ( level, 7, 'Seven swans a-swimming,' )
|| v ( level, 6, 'Six geese a-laying,' )
|| v ( level, 5, 'Five golden rings!' )
|| v ( level, 4, 'Four calling birds,' )
|| v ( level, 3, 'Three French hens,' )
|| v ( level, 2, 'Two turtle doves,' )
|| v ( level, 1, CASE level WHEN 1 THEN 'A' ELSE 'And a' END || ' partridge in a pear tree.' )
|| nl(NULL)
"The Twelve Days of Christmas"
FROM dual
CONNECT BY level <= 12
/
 

output:

The Twelve Days of Christmas
--------------------------------------------------------------------------------
On the first day of Christmas,
my true love sent to me:
A partridge in a pear tree.

...

On the twelfth day of Christmas,
my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five golden rings!
Four calling birds,
Three French hens,
Two turtle doves,
And a partridge in a pear tree.

Swift[edit]

Works with: Swift version 2.1
let gifts = [ "partridge in a pear tree", "Two turtle doves", 
"Three French hens", "Four calling birds",
"Five gold 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" ]
 
let nth = [ "first", "second", "third", "fourth", "fifth", "sixth",
"seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth" ]
 
func giftsForDay(day: Int) -> String {
var result = "On the \(nth[day-1]) day of Christmas, my true love sent to me:\n"
if day > 1 {
for again in 1...day-1 {
let n = day - again
result += gifts[n]
if n > 1 { result += "," }
result += "\n"
}
result += "And a "
} else {
result += "A "
}
return result + gifts[0] + ".\n";
}
 
for day in 1...12 {
print(giftsForDay(day))
}
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

Tcl[edit]

Works with: Tcl version 8.6
set days {
first second third fourth fifth sixth
seventh eighth ninth tenth eleventh twelfth
}
set gifts [lreverse {
"A partridge in a pear tree."
"Two turtle doves, and"
"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,"
}]
 
set n -1;puts [join [lmap day $days {
format "On the $day day of Christmas,\nMy true love gave to me:\n%s" \
[join [lrange $gifts end-[incr n] end] \n]
}] \n\n]
Output:
On the first day of Christmas,
My true love gave to me:
A partridge in a pear tree.

On the second day of Christmas,
My true love gave to me:
Two turtle doves, and
A partridge in a pear tree.

On the third day of Christmas,
My true love gave to me:
Three french hens,
Two turtle doves, and
A partridge in a pear tree.

On the fourth day of Christmas,
My true love gave to me:
Four calling birds,
Three french hens,
Two turtle doves, and
A partridge in a pear tree.

On the fifth day of Christmas,
My true love gave to me:
Five golden rings,
Four calling birds,
Three french hens,
Two turtle doves, and
A partridge in a pear tree.

On the sixth day of Christmas,
My true love gave to me:
Six geese a-laying,
Five golden rings,
Four calling birds,
Three french hens,
Two turtle doves, and
A partridge in a pear tree.

On the seventh day of Christmas,
My true love gave to me:
Seven swans a-swimming,
Six geese a-laying,
Five golden rings,
Four calling birds,
Three french hens,
Two turtle doves, and
A partridge in a pear tree.

On the eighth day of Christmas,
My true love gave to me:
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five golden rings,
Four calling birds,
Three french hens,
Two turtle doves, and
A partridge in a pear tree.

On the ninth day of Christmas,
My true love gave to me:
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five golden rings,
Four calling birds,
Three french hens,
Two turtle doves, and
A partridge in a pear tree.

On the tenth day of Christmas,
My true love gave to me:
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five golden rings,
Four calling birds,
Three french hens,
Two turtle doves, and
A partridge in a pear tree.

On the eleventh day of Christmas,
My true love gave to me:
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five golden rings,
Four calling birds,
Three french hens,
Two turtle doves, and
A partridge in a pear tree.

On the twelfth day of Christmas,
My true love gave to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five golden rings,
Four calling birds,
Three french hens,
Two turtle doves, and
A partridge in a pear tree.

UNIX Shell[edit]

Works with: Bourne Again SHell
Works with: Korn Shell version 93
#!/usr/bin/env bash
ordinals=(first second third fourth fifth sixth
seventh eighth ninth tenth eleventh twelfth)
 
gifts=( "A partridge in a pear tree." "Two turtle doves and"
"Three French hens," "Four calling birds,"
"Five gold 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," )
 
echo_gifts() {
local i day=$1
echo "On the ${ordinals[day]} day of Christmas, my true love sent to me:"
for (( i=day; i >=0; --i )); do
echo "${gifts[i]}"
done
echo
}
 
for (( day=0; day < 12; ++day )); do
echo_gifts $day
done

The above will also work in zsh if the index range is changed from 0..11 to 1..12.

Works with: Bourne Shell

(requires the seq command)

#!/bin/sh
ordinal() {
n=$1
set first second third fourth fifth sixth \
seventh eighth ninth tenth eleventh twelfth
shift $n
echo $1
}
 
gift() {
n=$1
set "A partridge in a pear tree." "Two turtle doves and" \
"Three French hens," "Four calling birds," \
"Five gold 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,"
shift $n
echo "$1"
}
 
echo_gifts() {
day=$1
echo "On the `ordinal $day` day of Christmas, my true love sent to me:"
for i in `seq $day 0`; do
gift $i
done
echo
}
 
for day in `seq 0 11`; do
echo_gifts $day
done
Output:
On the first day of Christmas, my true love sent to me:
A partridge in a pear tree.

On the second day of Christmas, my true love sent to me:
Two turtle doves and
A partridge in a pear tree.

[...]

On the twelfth day of Christmas, my true love sent to me:
Twelve drummers drumming,
Eleven pipers piping,
Ten lords a-leaping,
Nine ladies dancing,
Eight maids a-milking,
Seven swans a-swimming,
Six geese a-laying,
Five gold rings,
Four calling birds,
Three French hens,
Two turtle doves and
A partridge in a pear tree.

VBScript[edit]

days = Array("first","second","third","fourth","fifth","sixth",_
"seventh","eight","ninth","tenth","eleventh","twelfth")
 
gifts = Array("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")
 
For i = 0 To 11
WScript.StdOut.Write "On the " & days(i) & " day of Christmas"
WScript.StdOut.WriteLine
WScript.StdOut.Write "My true love sent to me:"
WScript.StdOut.WriteLine
If i = 0 Then
WScript.StdOut.Write gifts(i)
Else
For j = i To 0 Step - 1
If j = 0 Then
WScript.StdOut.Write "and " & gifts(0)
Else
WScript.StdOut.Write gifts(j)
WScript.StdOut.WriteLine
End If
Next
End If
WScript.StdOut.WriteBlankLines(2)
Next

zkl[edit]

Translation of: Python
gifts:=
#<<<
"A beer, in a tree.; Two turtlenecks; Three french toast;
Four pounds of backbacon; Five golden touques; Six packs of two-four;
Seven packs of smokes; Eight comic books; Nine back up singers;
Ten feet of snow; Eleven hosers hosing; Twelve dozen donuts"
#<<<
.split(";").apply("strip");
 
days:=("first second third fourth fifth sixth seventh eighth ninth tenth "
"eleventh twelfth").split();
 
foreach n,day in (days.enumerate()){ n+=1;
g:=gifts[0,n].reverse();
println("On the %s day of Christmas\nMy true love gave to me:\n".fmt(day),
g[0,-1].concat("\n"), (n>1) and " and\n" or "", g[-1], "\n");
}
Output:
On the first day of Christmas
My true love gave to me:
A beer, in a tree.

On the second day of Christmas
My true love gave to me:
Two turtlenecks and
A beer, in a tree.

On the third day of Christmas
My true love gave to me:
Three french toast
Two turtlenecks and
A beer, in a tree.

On the fourth day of Christmas
My true love gave to me:
Four pounds of backbacon
Three french toast
Two turtlenecks and
A beer, in a tree.

On the fifth day of Christmas
My true love gave to me:
Five golden touques
Four pounds of backbacon
Three french toast
Two turtlenecks and
A beer, in a tree.

On the sixth day of Christmas
My true love gave to me:
Six packs of two-four
Five golden touques
Four pounds of backbacon
Three french toast
Two turtlenecks and
A beer, in a tree.

On the seventh day of Christmas
My true love gave to me:
Seven packs of smokes
Six packs of two-four
Five golden touques
Four pounds of backbacon
Three french toast
Two turtlenecks and
A beer, in a tree.

On the eighth day of Christmas
My true love gave to me:
Eight comic books
Seven packs of smokes
Six packs of two-four
Five golden touques
Four pounds of backbacon
Three french toast
Two turtlenecks and
A beer, in a tree.

On the ninth day of Christmas
My true love gave to me:
Nine back up singers
Eight comic books
Seven packs of smokes
Six packs of two-four
Five golden touques
Four pounds of backbacon
Three french toast
Two turtlenecks and
A beer, in a tree.

On the tenth day of Christmas
My true love gave to me:
Ten feet of snow
Nine back up singers
Eight comic books
Seven packs of smokes
Six packs of two-four
Five golden touques
Four pounds of backbacon
Three french toast
Two turtlenecks and
A beer, in a tree.

On the eleventh day of Christmas
My true love gave to me:
Eleven hosers hosing
Ten feet of snow
Nine back up singers
Eight comic books
Seven packs of smokes
Six packs of two-four
Five golden touques
Four pounds of backbacon
Three french toast
Two turtlenecks and
A beer, in a tree.

On the twelfth day of Christmas
My true love gave to me:
Twelve dozen donuts
Eleven hosers hosing
Ten feet of snow
Nine back up singers
Eight comic books
Seven packs of smokes
Six packs of two-four
Five golden touques
Four pounds of backbacon
Three french toast
Two turtlenecks and
A beer, in a tree.