dev-cpp-users

Re: [Dev-C++] Is there a "garbage" stream?

[Daniel G. <sp...@ho...>]

You could always try using a #IF  but you still need to change your code.
sorry, I'm all out on that one!


>From: "Scott Williams" <se...@al...>
>Reply-To: <se...@al...>
>To: "Dev-Cpp-Users@Lists. Sourceforge. Net" 
><dev...@li...>
>Subject: [Dev-C++] Is there a "garbage" stream?
>Date: Thu, 7 Nov 2002 15:26:59 -0500
>
>Hi,
>
>Here's my problem.  I have C code that does a bunch of number crunching,
>spitting out intermediate results to the output files along the way.
>However, in some applications, it would be preferable to NOT write any data
>to output files (e.g., when the program is run iteratively in an nonlinear
>optimization routine).
>
>Rather than hunt through my code to find all the instances of 
>fprintf(fpout,
>...) and insert a conditional statement, it would be much easier (and
>cleaner) if I could simply initialize the file pointer to a stream going
>nowhere.
>
>I've tried setting fpout = NULL but that doesn't work.  Any suggestions?
>
>Scott
>
>
>
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RE: [Dev-C++] Is there a "garbage" stream?

[Ioannis V. <no...@ho...>]

> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Scott Williams
> Sent: Thursday, November 07, 2002 10:27 PM
> To: Dev-Cpp-Users@Lists. Sourceforge. Net
> Subject: [Dev-C++] Is there a "garbage" stream?
> 
> 
> Hi,
> 
> Here's my problem.  I have C code that does a bunch of number 
> crunching,
> spitting out intermediate results to the output files along the way.
> However, in some applications, it would be preferable to NOT 
> write any data
> to output files (e.g., when the program is run iteratively in 
> an nonlinear
> optimization routine).
> 
> Rather than hunt through my code to find all the instances of 
> fprintf(fpout,
> ...) and insert a conditional statement, it would be much easier (and
> cleaner) if I could simply initialize the file pointer to a 
> stream going
> nowhere.
> 
> I've tried setting fpout = NULL but that doesn't work.  Any 
> suggestions?


There is not in standard C. However an implementation may provide one as
a system extension. Also you can use a predefined one like stdout or
stderr (so as to not write to a file).


Ioannis Vranos
 
* Programming pages: http://www.noicys.freeurl.com
* Alternative URL: http://run.to/noicys

RE: [Dev-C++] Is there a "garbage" stream?

[Scott W. <se...@al...>]

Daniel,

Thanks for the reply.  Got an answer to my question on another forum.  The
following initializes a 'bit bucket' file pointer:

fpout = fopen("NUL:","w");       // for win32
fpout = fopen("/dev/null","w");  // for unix

Scott

-----Original Message-----
From: Daniel Glenfield [mailto:sp...@ho...]
Sent: Friday, November 08, 2002 8:26 AM
To: se...@al...; dev...@li...
Subject: Re: [Dev-C++] Is there a "garbage" stream?


You could always try using a #IF  but you still need to change your code.
sorry, I'm all out on that one!


>From: "Scott Williams" <se...@al...>
>Reply-To: <se...@al...>
>To: "Dev-Cpp-Users@Lists. Sourceforge. Net"
><dev...@li...>
>Subject: [Dev-C++] Is there a "garbage" stream?
>Date: Thu, 7 Nov 2002 15:26:59 -0500
>
>Hi,
>
>Here's my problem.  I have C code that does a bunch of number crunching,
>spitting out intermediate results to the output files along the way.
>However, in some applications, it would be preferable to NOT write any data
>to output files (e.g., when the program is run iteratively in an nonlinear
>optimization routine).
>
>Rather than hunt through my code to find all the instances of
>fprintf(fpout,
>...) and insert a conditional statement, it would be much easier (and
>cleaner) if I could simply initialize the file pointer to a stream going
>nowhere.
>
>I've tried setting fpout = NULL but that doesn't work.  Any suggestions?
>
>Scott
>
>
>
>-------------------------------------------------------
>This sf.net email is sponsored by: See the NEW Palm
>Tungsten T handheld. Power & Color in a compact size!
>http://ads.sourceforge.net/cgi-bin/redirect.pl?palm0001en
>_______________________________________________
>Dev-cpp-users mailing list
>Dev...@li...
>TO UNSUBSCRIBE: http://www.noicys.cjb.net/devcpp/ub.htm
>https://lists.sourceforge.net/lists/listinfo/dev-cpp-users


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