From: "Damian Yerrick" <web DOT poison AT pineight DOT 8m DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Please help...matrix problem with Allegro
Date: Wed, 6 Oct 1999 19:58:27 -0500
Organization: Rose-Hulman Institute of Technology
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To: djgpp AT delorie DOT com
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Shawn Hargreaves wrote:
> > 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.

Nicolas Blais <nicblais AT hotmail DOT com> wrote:
>
> What do you mean initialize to zero? Do you mean like
> matrix[x][y] = 0

Does this "matrix" have a whole bunch of falling
text strings printed vertically?

> or do something else?

Close. Put braces around the zero.

int matrix[HEIGHT][WIDTH] = {{0}};

Initializing the first element(s) of an array initializes the rest
to zero or NULL. Declaring a variable outside of function scope
(i.e. global) also zeroes it.


Damian Yerrick
http://come.to/yerrick