This page has been superceded by a wiki version of this example: TwelveDaysOfChristmasExampleOne

/*



The Twelve Days of Christmas



File:      twelve.d

Author:    Justin C. Calvarese

Website:   http://jcc_7.tripod.com/d/

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++)

    {

        for (int d=e; d>0; d--)

        {   

            s = "";



            if (d==e)

            {

                s = I1;

                

                switch(d)

                {

                    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 (d)

            {

                case 12: println(D12); break;

                case 11: println(D11); break;

                case 10: println(D10); break;

                case 9:  println(D9); break;

                case 8:  println(D8); break;

                case 7:  println(D7); break;

                case 6:  println(D6); break;

                case 5:  println(D5); break;

                case 4:  println(D4); break;

                case 3:  println(D3); break;

                case 2:  println(D2); break;

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

            }

        }

    }

    return 0;

}