Hi there!
How do the fstream works?
How are the << and >> operators defined? How many bits do they read or
write?
Thanks.
Magnus
by Magnus Mage » Wed, 11 Sep 2002 22:23:22
How do the fstream works?
How are the << and >> operators defined? How many bits do they read or
write?
Thanks.
Magnus
by Nils O. Sel?sd » Wed, 11 Sep 2002 21:02:36
> How do the fstream works?
> How are the << and >> operators defined? How many bits do they read or
think of it as the class of cout have some methods, it might e.g. have
write(char *str);
write(int i);
Instead of several overloadad "ordinaery" methods, some operators
are rather overloaded.
So the potentional
cout.write("Test");
is almost the same as
cout << "Test";
by Petric Fran » Wed, 11 Sep 2002 21:19:21
> Hi there!
> How do the fstream works?
> How are the << and >> operators defined? How many bits do they read or
> write?
For me it halps a lot.
regards
Petric
1. fstream and socket not working
I am using Sun Workshop 5.0 on Solaris 2.6.
I have created an fstream (both I & O) with a socket descriptor to an
open tcp connection. When I use the fstream for one direction, such as
reading, it works fine. When I switch to the other, such as writing, it
always fails. I am not sure what I am doing wrong. It has to be
something simple. I tried this with 2 streams, an ifstream and an
ofstream, and it worked fine. Any help would be greatly appreciated.
I think the filebuf is seeking when the ifstream/ofstream are switched.
Not sure if that is the case.
Here is some sample code, where it always fails on the write, but
always works on the read.
fstream *io = new fstream(theSocket);
io->ignore(sizeof(STARTDATATRANSFER), STARTDATATRANSFERDELIM);
if (io->fail())
{
cerr << "got error (" << errno << ")" << endl;
else
{
(*io) << ACKDATATRANSFER; io->flush();
if (io->fail())
cerr << "Write Ack to stream failed (" << errno << ")" << endl;
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