From: Simon Wright <simon@pogner.demon.co.uk>
Subject: Re: Package spec and body in C.
Date: 1997/09/30
Date: 1997-09-30T00:00:00+00:00 [thread overview]
Message-ID: <x7viuvih8pu.fsf@pogner.demon.co.uk> (raw)
In-Reply-To: 342BB433.15C6@admin.tc.faa.gov
Ron Thompson <thompsor@admin.tc.faa.gov> writes:
> J. M. Rayas wrote:
> I have done this to a variety of degrees. The main trick is to have
> each header(.h) declare itself first thing. That way other headers
> and bodies can simply ask
> if(!thing_declared)
> #include thing.h;
The normal technique for this is to put the condition in the header
file (that stops the user having to worry about getting it right):
/* foo.h */
#ifndef __FOO_H__
#define __FOO_H__
...stuff...
#endif /* __FOO_H__ */
(actually, there are some rules to do with reserved names (names
starting with an underscore and a capital letter, or starting with
double underscore being reserved: I guess I should change to eg
_foo_h_ or something like that.)
--
Simon Wright Work Email: simon.j.wright@gecm.com
GEC-Marconi Radar & Defence Systems Voice: +44(0)1705-701778
Command & Information Systems Divsion FAX: +44(0)1705-701800
next prev parent reply other threads:[~1997-09-30 0:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-09-25 0:00 Package spec and body in C J. M. Rayas
1997-09-26 0:00 ` Ron Thompson
1997-09-30 0:00 ` Simon Wright [this message]
1997-09-29 0:00 ` Eric W. Nikitin
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