Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!ncar!groucho!steve
From: steve@groucho.ucar.edu (Steve Emmerson)
Newsgroups: comp.lang.c
Subject: Re: #define DEBUG... (using printf for debugging)
Message-ID: <7277@ncar.ucar.edu>
Date: 9 May 90 18:33:30 GMT
References: <1990May8.133742.10584@eci386.uucp>
Sender: news@ncar.ucar.edu
Organization: University Corporation for Atmospheric Research (UCAR)
Lines: 21

jmm@eci386.uucp (John Macdonald) writes:

>Try the following instead:

>    #ifdef DEBUG_PRINT_ON
>    #   define DEBUG printf
>    #else
>    #   define DEBUG(ignore)
>    #endif

>To insert a DEBUG-conditional printf use:

>    DEBUG( "format", args, ... );

>(no double parens or other funny syntax required, it just looks like
>a function call)

Be aware that some C compilers will have problems with the above due to
an "argument mismatch" between the usage of the macro and its definition.

Steve Emmerson        steve@unidata.ucar.edu        ...!ncar!unidata!steve