Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!ukc!mucs!cns!usenet
From: vanaards%t7@uk.ac.man.cs
Newsgroups: comp.lang.c
Subject: ftell fseek II (sva)
Keywords: ftell fseek r+
Message-ID: <1990Dec14.133848.14932@cns.umist.ac.uk>
Date: 14 Dec 90 13:38:48 GMT
References: <kim.660990813@kowari>
Sender: usenet@cns.umist.ac.uk (News System)
Organization: Department of Computer Science, University of Manchester UK
Lines: 26


  What is the quickest way of determining the size of a file using Standard
ANSI C functions ? Currently I'm using fseek to locate the end of file, 
followed by ftell to interrogate the position index.

  Also, I'm having to read strings from a file - well full file path-names,
now in a hierarchial structured system these vary in size according to the
location of the file. The format of the file is defined as :

  full-filename   number  full-filename number number \n 

  When reading strings it seems you have to allocate an array (buffer) whose
size will cater for the largest string possible - but in my case that isn't
exactly possible. Apart from reading chars using fgetc either on a two pass
basis - first pass to determine length, and second to fill a dynamically
allocated buffer, or reading into a linked list - how would you recommend that
I get the best performance ?
 

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