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From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.std.c,comp.lang.c
Subject: Re: macors and semicolons
Message-ID: <16519@smoke.brl.mil>
Date: 24 Jun 91 16:53:47 GMT
References: <1991Jun24.213932.595@otago.ac.nz>
Followup-To: comp.lang.c
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 9

In article <1991Jun24.213932.595@otago.ac.nz> andrew@otago.ac.nz writes:
>#define SWAP(a, b) {int c;  c = a; a = b; b = c}
>how do I define a swap macro that swaps two doubles, allows the ';' on the end
>of the macro call, but does not cause a systax error when used in this context?

This is not a C standards question.

One obvious general solution is:
	#define MACRO(args) do { /*...*/ } while(0)