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From: tbrakitz@phoenix.Princeton.EDU (Byron Rakitzis)
Newsgroups: comp.lang.c
Subject: More gotos...
Keywords: Well, why not?
Message-ID: <10353@phoenix.Princeton.EDU>
Date: 11 Sep 89 07:14:16 GMT
Organization: Princeton University, NJ
Lines: 36

I came across what I thought was a good application for a goto:
say you're scanning an input stream for tokens, and that you
skip over whitespace. Furthermore, suppose that there is a pair
of comment-delimiter characters. You also want to skip over comments.
So:

token_grabbing_function()
 {

 get_a_token:

   while (is_white_space(c = getchar()); /* skip it */

   /* So, c contains a non-whitespace character */

   if (c == comment_delimiter)
    { 
    while (c = getchar() != other_comment_delimiter); /* skip it */
    goto get_a_token;
    }
   else
    {
    deal_with_the_token_properly_and_return;
    }
 }

Can anyone see a goto-less version which is as concise?
(I'm ignoring EOF errors and the like for the moment)

Cheers. (ducks for the flames)

-- 
"C Code."
	  "C Code run."
			"Run, Code, run!"
Byron Rakitzis. (tbrakitz@phoenix.princeton.edu ---- tbrakitz@pucc.bitnet)