Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!dali.cs.montana.edu!uakari.primate.wisc.edu!zaphod.mps.ohio-state.edu!wuarchive!rice!uw-beaver!milton!kenney
From: kenney@milton.u.washington.edu (Michael Kenney)
Newsgroups: comp.lang.c++
Subject: istream problem
Message-ID: <1991May23.181402.7912@milton.u.washington.edu>
Date: 23 May 91 18:14:02 GMT
Sender: kenney@milton.u.washington.edu (Michael Kenney)
Distribution: usa
Organization: University of Washington, Seattle
Lines: 35

I've been trying to get the hang of C++ streams and I've run into an
anoying problem.  I'm trying to read a stream to EOF, rewind to the
beginning and read it again, ie:

    func(istream &in)
    {
	.
	.
	.
	while(in.get(c))
	{
	    // Do something
	}

	in.seekg(0, ios::beg);

	// This loop FAILS
	while(in.get(c))
	{
	    // Do something else
	}
   }

The problem is, the second while loop never iterates, in.get() returns
0.  I used in.tellg() to insure that the stream is repositioned, and it
is.  Am I missing something obvious?

Please email your responses.

Thanks.

Mike Kenney
UW Applied Physics Lab
mikek@apl.washington.edu
mike@apl-at.apl.washington.edu