Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!ames!pasteur!agate!shelby!neon!Gang-of-Four!dkeisen
From: dkeisen@Gang-of-Four.Stanford.EDU (Dave Eisen)
Newsgroups: comp.lang.c
Subject: Re: #define DEBUG... (using printf for debugging)
Message-ID: <1990May4.063937.13461@Neon.Stanford.EDU>
Date: 4 May 90 06:39:37 GMT
References: <11290@hoptoad.uucp> <40628@cornell.UUCP> <90123.152729CMH117@psuvm.psu.edu>
Sender: news@Neon.Stanford.EDU (USENET News System)
Organization: Sequoia Peripherals
Lines: 31

In article <90123.152729CMH117@psuvm.psu.edu> CMH117@psuvm.psu.edu (Charles Hannum) writes:
>
>#ifdef DEBUG
>#define  debug(x)  printf x
>#else
>#define  debug(x)
>#endif
>

On UNIX you might want to do something like:

#ifdef DEBUG
#define debug(x)   	printf x, fflush (stdout)
#else
#define debug(x)
#endif

or put an
#ifdef DEBUG
setbuf (stdout, NULL);
#endif 

near the beginning of main. Otherwise you have no way of knowing
where in the program it crashed.



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Dave Eisen                      	    Home: (415) 323-9757
dkeisen@Gang-of-Four.Stanford.EDU           Office: (415) 967-5644
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