Path: utzoo!attcan!sobmips!uunet!samsung!brutus.cs.uiuc.edu!psuvax1!psuvm!cmh117
From: CMH117@PSUVM.BITNET (Charles Hannum)
Newsgroups: comp.lang.c
Subject: Re: Extern variables question
Message-ID: <89320.012957CMH117@PSUVM.BITNET>
Date: 16 Nov 89 06:29:57 GMT
References: <1958@atanasoff.cs.iastate.edu>
Distribution: na
Organization: Penn State University
Lines: 6

You should define a global variable in *exactly one* module, no more, no less.
All other modules should refer to it as an extern.  Most linkers will generate
an error if a global variable by the same name is defined in more than one
module.

As for initializing it, that depends ...  Your answer could be either B or C.