This page has been superceded by a wiki version of this example: TwelveDaysOfChristmasExampleTwo

/*

 

The Twelve Days of Christmas

 

File:           twelve_days_2.d

Author:         Justin C. Calvarese, http://jcc_7.tripod.com/d/

Modified by:    Larry Cowan

License:        Public Domain

 

Produces the lyrics of the 12 Days of Christmas (all twelve verses)

 

*/

 



const char[] I1 = "On the ";

const char[] I2 = " day of Christmas, my true love gave to me:";

const char[] D1 = "A Partridge in a Pear Tree.";

const char[] D2 = "Two Turtle Doves, and";

const char[] D3 = "Three French Hens,";

const char[] D4 = "Four Calling Birds,";

const char[] D5 = "Five Golden Rings,";

const char[] D6 = "Six Geese a Laying,";

const char[] D7 = "Seven Swans a Swimming,";

const char[] D8 = "Eight Maids a Milking,";

const char[] D9 = "Nine Ladies Dancing,";

const char[] D10 = "Ten Lords a Leaping,";

const char[] D11 = "Eleven Pipers Piping,";

const char[] D12 = "Twelve Drummers Drumming,";

 

 

 

void println(char[] s)

{

    printf(cast(char*) (s ~ "\n\0")); /* A simple \n\0 (without quotes) is valid in D, but d2html won't handle it */

}

 

 

 

int main (char[][] args)

{

    char[] s;

 

    for (int e=1; e<=12; e++)

    {

        s = I1;

               

        switch(e)       /* ...keeping the cases separate... */

        {

            case 1:  s ~= "first"; break;

            case 2:  s ~= "second"; break;

            case 3:  s ~= "third"; break;

            case 4:  s ~= "fourth"; break;

            case 5:  s ~= "fifth"; break;

            case 6:  s ~= "sixth"; break;

            case 7:  s ~= "seventh"; break;

            case 8:  s ~= "eighth"; break;

            case 9:  s ~= "ninth"; break;

            case 10: s ~= "tenth"; break;   

            case 11: s ~= "eleventh"; break;

            default: s ~= "twelveth"; break;

        }

        s ~= I2;

        println(s);

 

        switch (e)     /* ...and without the break statements... */

        {

            case 12: println(D12);

            case 11: println(D11);

            case 10: println(D10);

            case 9:  println(D9);

            case 8:  println(D8);

            case 7:  println(D7);

            case 6:  println(D6);

            case 5:  println(D5);

            case 4:  println(D4);

            case 3:  println(D3);

            case 2:  println(D2);

            default: println(D1); println(""); break;

        }

    }

    return 0;

}