Sender:	shinelight AT detroit DOT crosswinds DOT net
Message-Id:	<3.0.6.16.19990313015041.1dbffe6a@pop.detroit.crosswinds.net>
X-Sender:	detr_shinelight AT pop DOT detroit DOT crosswinds DOT net
X-Mailer:	QUALCOMM Windows Eudora Light Version 3.0.6 (16)
Date:	Sat, 13 Mar 1999 01:50:41 -0500
To:	djgpp AT delorie DOT com, buzdor AT email DOT com
From:	"Thomas J. Hruska" <shinelight AT detroit DOT crosswinds DOT net>
Subject:	Passing/updating pointers...
Mime-Version:	1.0
Reply-To:	djgpp AT delorie DOT com

I have never quite figured out how to pass a pointer to a function and have
the function update the variable sent to it.  So, for many years I have
just found ways to work around this little glitch in my memory.  Now, I
have come to a point in a program that I'm writing where I can't work
around the problem anymore.

Here is what I want to do:

// Read a line of text from buffer in memory and return string
char *LineInput(char *src)
{
  char *dest, src2;

  src2 = src;
...
  [update input pointer (src) with src2]
  return dest;
}

So, how would I go about doing this?  That is, how would I call the
function and how would I perform the update?


        Thomas J. Hruska -- shinelight AT detroit DOT crosswinds DOT net
Shining Light Productions -- "Meeting the needs of fellow programmers"
         http://www.geocities.com/SiliconValley/Heights/8504
                    http://click-on.to/shinelight

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