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From: markh@csd4.csd.uwm.edu (Mark William Hopkins)
Newsgroups: comp.lang.c
Subject: Re: A question on C programming style
Message-ID: <10999@uwm.edu>
Date: 12 Apr 91 21:06:36 GMT
References: <1991Apr12.103621.8907@umiami.ir.miami.edu>
Sender: news@uwm.edu
Organization: University of Wisconsin - Milwaukee
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In article <1991Apr12.103621.8907@umiami.ir.miami.edu> devebw9f@miavax.ir.miami.edu writes:
>How do the guru's on the net feel about the following two styles?
(nested includes)

ANSI-C doesn't care if you include the same .h file twice or more (if they
contain only declarations and not definitions).  They went out of their way
(the standards-makers) to ensure this to be so.

Anyway, if you include a.h into b.h, a.h is usually make secure by nesting it
in an #ifndef:

#ifndef A_INCLUDED
#   define A_INCLUDED
... rest of a.h
#endif

<stdio.h> might have something like this in it...