"extern" and function declarations

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#2104

From: Carl Laurence Gonsalves
Date: Thu, 29 Feb 1996 00:31

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Is there any difference in the meaning between the following two
declarations?

extern int foo( void );
int foo( void );

In other words, is "extern" ever necessary before a function prototype?
I've never used "extern" for function declarations before, and recently
I've seen some code which uses extern in front of the prototypes in the
headers. I'm wondering, is it okay to leave out extern, or is there a
possibility that some compiler/linker will have problems if I leave it
out?

-- 
        Carl Laurence Gonsalves - clgonsal@undergrad.math.uwaterloo.ca
                   Computer Science, University of Waterloo
               http://www.undergrad.math.uwaterloo.ca/~clgonsal/
                   http://www.csclub.uwaterloo.ca/~clgonsal/

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From: clgonsal@undergrad.math.uwaterloo.ca (Carl Laurence Gonsalves)
Newsgroups: comp.lang.c.moderated
Subject: "extern" and function declarations
Date: 28 Feb 1996 18:31:53 -0600
Organization: University of Waterloo
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