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From: Ian Collins <ian-news@hotmail.com>
Newsgroups: comp.lang.c
Subject: Re: I need help
Date: Mon, 16 May 2011 13:42:34 +1200
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.c:4047

On 05/15/11 06:29 AM, Heinrich Wolf wrote:
>
> or with a macro:
>
> #define STRNCAT(a, b) strncat(a, b, sizeof(a) - strlen(a) - 1)
> char string[10] = "NEW";
> STRNCAT(string, "Jersey");

That macro would go horribly (and silently) wrong if

a) 'a' wasn't a fixed sized array, or
b) it was, but the definition wasn't visible when the macro was expanded.

-- 
Ian Collins