Path: utzoo!attcan!uunet!dg!absolut!hmelman
From: hmelman@absolut.rtp.dg.com (Howard Melman)
Newsgroups: comp.lang.c
Subject: external declarations of ptrs and arrays
Message-ID: <674@dg.dg.com>
Date: 27 Jul 90 14:36:03 GMT
Sender: root@dg.dg.com
Reply-To: hmelman@absolut.rtp.dg.com (Howard Melman)
Organization: Data General Corporation, Research Triangle Park, NC
Lines: 25

I'm having some problems with an external declaration of a character
array.  I have some vague ideas why, but rather than guessing I'd rather
get some definitive answer from someone.  Here goes:

I have the file declare.c:

char temp[20]="blah";

I have the file use.c:

#include <string.h>
extern char *temp;
main()
{
	return(strcmp(temp,"blah");
}

This causes a core dump.  When I change my extern declaration in use.c to be:

extern char temp[];

the program works fine.  I was under the impression that the two
declarations were the same.  Help...

Howard