Path: chuka.playstation.co.uk!tjs
From: tjs@cs.monash.edu.au (Toby Sargeant)
Newsgroups: scee.yaroze.beginners
Subject: Re: Debugging code
Date: 28 Sep 1998 06:10:01 GMT
Organization: PlayStation Net Yaroze (SCEE)
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Message-ID: <slrn70uaeu.kmn.tjs@longford.cs.monash.edu.au>
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On 28 Sep 1998 14:36:46 +1000, Toby Hutton <thutton@cybec.com.au> wrote:
>James Russell <James_Russell@scee.sony.co.uk> writes:
>
>> Just as an addendum which I find useful, I define 3 macros like so:
>> 
>> #define DEBUG
>> 
>> #ifdef DEBUG
>> #define debugStr(xxx) printf((xxx))
>> #define debugStr2(xxx,yyy) printf((xxx),(yyy))
>> #define debugStr3(xxx,yyy,zzz) printf((xxx),(yyy),(zzz))
>> #else
>> #define debugStr(xxx) 
>> #define debugStr2(xxx,yyy)
>> #define debugStr3(xxx,yyy,zzz)
>> #endif
>> 
>> Then I can just go:
>> 
>> 	debugStr2("The value of KillerBananaNum = %d\n",killerBananaNum);
>
>Or you could use:
>
>#if defined(DEBUG)
>#define dprintf(x) printf x
>#else
>#define dprintf(x)
>#endif
>
>and use it:
>
>dprintf(("foo = %d (0x%08x), bar = %d (0x%08x)\n", foo, foo, bar, bar));
>
>Note the double parentheses.  Means you can have just one macro.

or,

#ifdef DEBUG
#define D(x) printf(x)
#else
#define D(x)
#endif
#define AND ,

then:

D("foo");
D("foo%s" AND foo);

etc.

or you can just preprocess your source with m4, and do it in a sane and
rational way. may the authors of the c preprocessor spec be cursed for all
eternity for not doing it the rightWay(tm).

Toby.