From: Jason Green <news AT jgreen4 DOT fsnet DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: GPF caused by string functions...
Date: Sat, 23 Sep 2000 20:53:21 +0100
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To: djgpp AT delorie DOT com
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raynee AT my-deja DOT com wrote:

> Thanks very much. I think I get it now... the problem is that I am not
> terminating buf[] with a null character.

Yep, and you fail to do this with spacer[] too.  (In case you have not
realised, buf[] and spacer[] contain random data until you
specifically load them.)

I hope this doesn't spoil your fun, but how about:

void centrestring (const char *str, int fg, int bg, 
                   int col, int row, int width) 
{
    int offset = (width - strlen(str)) / 2;
    
    putstring (str, fg, bg, col+offset, row);
}