99 Bottles of Beer

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Date:	02/19/09
Author:	Tim Locke
URL:	n/a
Comments:	0
Info:	http://www.cat-language.com/
Score:	(3.75 in 16 votes)

// 99-bottles-of-beer.cat
// by Tim Locke

define pluralize
{
	1 eq not [ "s" write ] [ "" write ] if
}

define bottles-of-beer
{
	0 eq
		[ "No more" ]
		[ dup -1 eq [ 99 ] [ dup ] if ] if write
	" bottle" write dup pluralize " of beer" write
}

define verse
{
	dup bottles-of-beer " on the wall," writeln
	dup bottles-of-beer "," writeln
	dup 0 eq
		[ "Go to the store and buy some more," ]
		[ "If " write
		  dup 1 eq [ "that" ] [ "one of those" ] if write
		  " bottle" write dup pluralize " should happen to fall,"
		] if writeln
	1 - dup bottles-of-beer " on the wall." writeln
	"" writeln
}

define beer-song
{
	99 [ verse ] [ dup 0 gteq ] while
}

beer-song

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