From:	Nicolas Blais <nicblais AT hotmail DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Please help...matrix problem with Allegro
Date:	Wed, 06 Oct 1999 13:52:34 GMT
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> Depending on how big res_x and res_y are, this might be
> overflowing your stack: there is only limited space for
> local variables, so it would be better to use dynamic
> allocation (ie. malloc) for any big arrays.
>
> >      pix_x = (random() % res_x) + 1;
>
> This is a potential array overflow: C arrays count from
> zero, so you don't want that + 1 on the end.
>
> Also, you didn't initialise your array to anything, so
> the starting contents are random. You need to fill it
> with zeros before you can sensibly check for whether
> values are set or not.

What do you mean initialize to zero? Do you mean like matrix[x][y] = 0
or do something else?

Thanks.  Allegro rules!

--
nicblais AT hotmail DOT com
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