99 Bottles of Beer

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/* The 99 Bottles of Beer Program
 *
 * Sept. 1st 2005
 * by Matteo Casati <devaraja87^gmail^com>
 *
 * This is the poor-style C version of
 * the program. It uses only gotos.
 */

int main()
{
    int n_beers=99;
    char pl='s';
    goto a;
  z:
    return 0;
  b:
    n_beers--;
    if(n_beers){
	pl=(n_beers==1?31:'s');
	printf("%d bottle%c of beer on the wall!\n",n_beers,pl);
	goto a;
    }else{
	printf("no more bottles of beer on the wall!\n");
	printf("No more bottles of beer on the wall,"
	       " no more bottles of beer.\nGo to the store"
	       " and buy some more, 99 bottles of beer on the wall!\n");
	goto z;
    }
  a:
    printf("%d bottle%c of beer on the wall, "
	   "%d bottle%c of beer\n",n_beers,pl,n_beers,pl);
    printf("Take one down and pass it around, ");
    goto b;
}

Alternative Versions

Version	Author	Date	Comments	Rate
actually produces correct lyrics :P	Dustshine	08/20/05	0
Linux kernel module	Stefan Scheler	08/02/05	15
Correct ANSI C containing no semicolons	Steve Checkoway	01/15/09	0
multithreaded version	Stefan Scheler	05/11/05	4
standard version	Bill Wein	04/20/05	4

Comments

 Skylark said on 09/05/05 14:01:58

You have to #include <stdio.h> for that to work, ie printf lolz.

Also:

#include <stdio.h>

int main()
{

 Richard Selby said on 08/25/06 17:01:29

Ah lovely! It's so nice to see someone break the rules

 Kiyoshi Akima said on 08/28/06 20:04:23

In the olde days you didn't need to #include a header unless you needed something from it. Since the program doesn't use the return value from printf(), it doesn't need <stdio.h>.

However, the program does use string concatenation. Perhaps poorer style might be something like
<pre>
printf("No more bottles of beer on the wall,\
no more bottles of beer.\nGo to the store\
and buy some more, 99 bottles of beer on the wall!\n";
</pre>

 Kiyoshi Akima said on 08/28/06 20:06:28

Not sure where that smiley came from. It was just a close parenthesis.

And I guess I now know not to put in formatting tags...

 G. De Rosa said on 09/10/06 19:26:56

void main() would be even poorer than int main()

 aName said on 11/29/08 03:28:22

"Ahh, but int main(), and not returning anything tops both "

No. If control "falls off" the end of main() without an explicit return statement, the return value is zero.

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