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Language C

(standard version)

Date:04/20/05
Author:Bill Wein
URL:n/a
Comments:4
Info:n/a
Score: (2.81 in 124 votes)
/*
 * 99 bottles of beer in ansi c
 *
 * by Bill Wein: bearheart@bearnet.com
 *
 */

#define MAXBEER (99)

void chug(int beers);

main()
{
register beers;

for(beers = MAXBEER; beers; chug(beers--))
  puts("");

puts("\nTime to buy more beer!\n");

exit(0);
}

void chug(register beers)
{
char howmany[8], *s;

s = beers != 1 ? "s" : "";
printf("%d bottle%s of beer on the wall,\n", beers, s);
printf("%d bottle%s of beeeeer . . . ,\n", beers, s);
printf("Take one down, pass it around,\n");

if(--beers) sprintf(howmany, "%d", beers); else strcpy(howmany, "No more");
s = beers != 1 ? "s" : "";
printf("%s bottle%s of beer on the wall.\n", howmany, s);
}

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Alternative Versions

VersionAuthorDateCommentsRate
multithreaded versionStefan Scheler05/11/054
Linux kernel moduleStefan Scheler08/02/0515
actually produces correct lyrics :PDustshine08/20/050
Correct ANSI C containing no semicolonsSteve Checkoway01/15/090
poor StyleMatteo Casati09/01/056

Comments

>>  marcus said on 03/09/06 22:23:26

marcus Dang, you guys are verbose. This plays out just like the song does, forever:

int main(void)
{
int x;
char xs[4];
char *n = "o more";
char *b = " bottle";
char *o = " of beer";
char *w = " on the wall";

while(1)
{
x = 99;
while(x)
{
printf("%d%s%s%s%s, ", x, b, x == 1 ? "" : "s", o, w);
printf("%d%s%s%s\n", x, b, x == 1 ? "" : "s", o);
printf("Take %s down and pass it around, ", x-- == 1 ? "it" : "one" );
sprintf(xs, "%d", x);
printf("%s%s%s%s%s\n\n", x > 0 ? xs : "No", b, x != 1 ? "s" : "", o, w );
}
printf("N%s%ss%s%s, n%s%ss%s\n\7", n, b, o, w, n, b, o);
printf("Go to the store and buy some more\n";);
}
}

>>  ItsMe said on 09/20/08 14:13:11

ItsMe void main()
{
for(int beers=99; beers>0;)
{
char *s = (beers != 1) ? "s" : "";
printf("%d bottle%s of beer on the wall,\n", beers, s);
printf("%d bottle%s of beer.\n", beers, s);
printf("Take one down, pass it around,\n";);
s = (--beers != 1) ? "s" : "";
if(beers>0) printf("%d bottle%s of beer on the wall.\n",beers,s);
else printf("No more bottles of beer on the wall.\n";);
}
printf("Go to the store and buy some more\n";);
}

>>  aName said on 11/29/08 03:15:41

aName This isn't standard at all. See for example the declaration of main(), or the declaration of the variable 'beers'. It uses the "implicit int" feature which was removed in the current version of C.

>>  anon said on 04/12/09 19:12:53

anon You also need:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

Of course

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