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| From | John Gordon <gordon@panix.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: A question on variable scope, coming from a relative beginner |
| Date | 2015-11-12 21:57 +0000 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <n231vv$kkj$1@reader1.panix.com> (permalink) |
| References | <n230ii$pmi$1@news.albasani.net> |
In <n230ii$pmi$1@news.albasani.net> Jon Rossen <jonr17@comcast.net> writes:
> In this example from my book, I'm seeing that the use of extern is not
> necessary in main(), the book says that it is. In other words you can
Did the example put the print_value() function in a separate file?
The usual purpose of the 'extern' keyword is to access a variable that
is declared in a separate compilation unit (i.e. a separate c file).
--
John Gordon A is for Amy, who fell down the stairs
gordon@panix.com B is for Basil, assaulted by bears
-- Edward Gorey, "The Gashlycrumb Tinies"
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A question on variable scope, coming from a relative beginner Jon Rossen <jonr17@comcast.net> - 2015-11-12 13:32 -0800
Re: A question on variable scope, coming from a relative beginner John Gordon <gordon@panix.com> - 2015-11-12 21:57 +0000
Re: A question on variable scope, coming from a relative beginner Jon Rossen <jonr17@comcast.net> - 2015-11-12 16:06 -0800
Re: A question on variable scope, coming from a relative beginner James Kuyper <jameskuyper@verizon.net> - 2015-11-12 19:33 -0500
Re: A question on variable scope, coming from a relative beginner Jon Rossen <jonr17@comcast.net> - 2015-11-12 20:22 -0800
Re: A question on variable scope, coming from a relative beginner James Kuyper <jameskuyper@verizon.net> - 2015-11-13 08:08 -0500
Re: A question on variable scope, coming from a relative beginner Richard Heathfield <rjh@cpax.org.uk> - 2015-11-12 21:57 +0000
Re: A question on variable scope, coming from a relative beginner Jon Rossen <jonr17@comcast.net> - 2015-11-12 18:47 -0800
Re: A question on variable scope, coming from a relative beginner James Kuyper <jameskuyper@verizon.net> - 2015-11-12 22:19 -0500
Re: A question on variable scope, coming from a relative beginner Jon Rossen <jonr17@comcast.net> - 2015-11-12 22:05 -0800
Re: A question on variable scope, coming from a relative beginner Richard Heathfield <rjh@cpax.org.uk> - 2015-11-13 07:10 +0000
Re: A question on variable scope, coming from a relative beginner James Kuyper <jameskuyper@verizon.net> - 2015-11-13 08:33 -0500
Re: A question on variable scope, coming from a relative beginner Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-13 12:24 -0800
Re: A question on variable scope, coming from a relative beginner Keith Thompson <kst-u@mib.org> - 2015-11-14 11:58 -0800
Re: A question on variable scope, coming from a relative beginner James Kuyper <jameskuyper@verizon.net> - 2015-11-14 15:27 -0500
Re: A question on variable scope, coming from a relative beginner Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-12 14:00 -0800
Re: A question on variable scope, coming from a relative beginner Richard Heathfield <rjh@cpax.org.uk> - 2015-11-12 23:55 +0000
Re: A question on variable scope, coming from a relative beginner Keith Thompson <kst-u@mib.org> - 2015-11-12 17:11 -0800
Re: A question on variable scope, coming from a relative beginner Jon Rossen <jonr17@comcast.net> - 2015-11-12 20:39 -0800
Re: A question on variable scope, coming from a relative beginner Jon Rossen <jonr17@comcast.net> - 2015-11-12 20:38 -0800
Re: A question on variable scope, coming from a relative beginner Keith Thompson <kst-u@mib.org> - 2015-11-12 22:13 -0800
Re: A question on variable scope, coming from a relative beginner Jon Rossen <jonr17@comcast.net> - 2015-11-15 21:17 -0800
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