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Date: Mon, 8 Jun 2020 14:56:19 +0100
From: Derek Fawcus <dfawcus+lists-tuhs@employees.org>
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Subject: Re: [TUHS] History of popularity of C
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On Sat, Jun 06, 2020 at 05:49:23PM -0400, Doug McIlroy wrote:
> Syntactically it occurs at top level completely out of sync with the
> indentation and flow of text. Conversion to if would be a big win.

Well, doesn't that rather depend upon how one indents it?
As I recall, that freedom came with ANSI C.

But yeah, I'd prefer the if(0) type of elimination.

DF

$ cc yes-no.c; ./a.out; cc -DYES yes-no.c; ./a.out; cat yes-no.c
No
Yes
#include <stdio.h>

int main(void)
{
	#ifdef YES
		puts("Yes");
	#else
		puts("No");
	#endif

	return 0;
}