From: silkwodj AT my-dejanews DOT com
Newsgroups: comp.os.msdos.djgpp
Subject: Declaring a "null" pointer (was Providing a "cast")
Date: Tue, 19 Jan 1999 15:31:09 GMT
Organization: Deja News - The Leader in Internet Discussion
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Thanks to Hans-Bernhard Broeker for clarifying the cast mechanism for me. 
Now I realize what I want to do is declare a pointer named "screen" and set
its address to zero (so I can recognize this bogus value in a test).  I
believe this is referred to as a "null" pointer, even though there really is
a value of zero.

This has got to be some real basic thing I've missed along the way.

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