From:	"DeHackEd" <notgiven AT out DOT com>
Newsgroups:	comp.os.msdos.djgpp
References:	<19990101025458 DOT 11224 DOT 00005570 AT ng37 DOT aol DOT com>
Subject:	Re: multiple file compiling
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Message-ID:	<Ll4j2.3273$fz5.77@tundra.ops.attcanada.net>
Date:	Fri, 1 Jan 1999 09:51:28 -0500
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Probably the best thing to do is make a .H file every C file includes. This H
file would include prototypes for all shared functions and variables.

As for defining variables, in 1 C file only, use "int ROOM;" as you normally
would. In the header file, or in each C file that needs this variable, use
"extern int ROOM;" This tells the compiler the variable exists, but isn't
defined in this C file. Make sure you link the first one with the second one or
the linker will give you UNDEFINED REFERENCE TO _ROOM.

Twidler444 <twidler444 AT aol DOT com> wrote in message
news:19990101025458 DOT 11224 DOT 00005570 AT ng37 DOT aol DOT com...
>Hello, Im trying to make a game.  This game is pretty long, so I have decided
>to chop the program into different parts.  and have these different parts of
>the game in their own file.  The only problem is how do I do the sharing of
>variables.
>Say I declare the variable ROOM in the main file and also use it in the second
>file. How do I take care of this?  Do I include the second file? (#include
><second.cpp>)
>
>
>any help would be usefull
>
>
>Twidler

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