Path: utzoo!utgpu!attcan!uunet!seismo!sundc!pitstop!sun!amdcad!ames!haven!mimsy!jds
From: jds@mimsy.UUCP (James da Silva)
Newsgroups: comp.unix.questions
Subject: Re: C/UNIX low level I/O
Keywords: C, I/O, open, fopen
Message-ID: <14307@mimsy.UUCP>
Date: 2 Nov 88 16:05:25 GMT
References: <6695@pyr.gatech.EDU>
Reply-To: jds@mimsy.umd.edu (James da Silva)
Organization: University of Maryland, Department of Computer Science
Lines: 24

In article <6695@pyr.gatech.EDU> david@pyr.gatech.edu (David Brown) writes:
>
> ...  But this ay, I do a separate 'write' for every word in the
> list, and a 'write' for the spaces between and the newlines. Like this:
> 
[ pseudocode showing writes for each word and space, then for the newline ]
>
> My question: is there a better way to do this?  I've thought of using 
> higher-level I/O routines like fprintf, but I think they would be
> less efficient. But less efficient than what I'm doing now?

If you don't need the formatting capabilities of fprintf, try using fputs.
I think you will see a significant speed boost because the stdio library
buffers your output rather than doing a system call for each word.

You can get even more juice by buffering it yourself, since you don't have
to be as general as stdio does.  But then you have to be sure to pick a 
good buffer size for your system...

					- Jaime

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path:   uunet!mimsy!jds 				James da Silva
domain: jds@mimsy.umd.edu