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From: paul@devon.UUCP (Paul Sutcliffe Jr.)
Newsgroups: comp.lang.c
Subject: Re: Why all this fuss about CTRL(X) ??
Message-ID: <184@devon.UUCP>
Date: Sat, 6-Dec-86 23:27:18 EST
Article-I.D.: devon.184
Posted: Sat Dec  6 23:27:18 1986
Date-Received: Tue, 9-Dec-86 02:51:40 EST
References: <7136@elsie.UUCP> <779@valid.UUCP> <5396@brl-smoke.ARPA> <1955@watdragon.UUCP>
Organization: Devon Computer Services, Allentown, PA
Lines: 28

In article <1955@watdragon.UUCP>, jmsellens@watdragon.UUCP (John M. Sellens) writes:
> Make a file called ctrl.h with lines like
> #define CTRLA	'\001'
> in it (should take mere seconds).  Put #include "ctrl.h" in your
> C source files and use CTRLA.  No fuss, no muss.  Easy to understand.
> Portable. And it even works.

That's fine if you know ahead of time what control characters you 
want to play with.  However, if I want to find the ``control'' value
of a variable, as in:

	foo()
	{
		char	c, cc;
		...
		cc = CTRL(c);
		...
	}

then your method, although good for what it was intended, won't do.

-Paul

-- 
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