Subj : Re: fstream arrays
To   : borland.public.cpp.borlandcpp
From : "D Kat" <disisdkat@hotmail.com>
Date : Wed Feb 25 2004 04:25 pm

The error (and I have stepped through this as well) is done within the
function get_subj_fp - I have taken out the error check on the return of the
function because it doesn't matter - what I'm saying is ignore the fact that
I don't care if I get an error or not.  That is not the point.  In my way of
veiwing the world Arrays are pointers.  That is how I refer to them.  This
is what I care about

if(!out_files[i]) ...... tests as 1 or as an ERROR
if(!out_file).... tests as 0 or NOT ERROR.

ofstream outfiles;
vs
ofstream outfiles[3];

Why does one return false while the other doesn't  -  BOTH successfully
open, write and save.


" Bruce Salzman" <bruce@nospam.org> wrote in message
news:403d0e80$1@newsgroups.borland.com...
>
> > the file open is called only once for any given item of the array (which
> is
> > when the "  if (!out_files[file]) error is declared), the data is
written
> at
> > the end of the program (successfully), and the files are closed
> sucessfully.
>
> Not sure what the error is. Have you examined ios::state to see which bits
> are set?
>
> > The program works without any error at all when I do NOT declare the
> fstream
> > variable to be an array and when I do open the fstream as array items it
> > does actually open a file even though it claims to be returning a 0 when
> > checked.
>
> What returns 0? get_subj_fp() returns 0 on success. open() doesn't return
> anything.
>
> >  I have lived with this for some years but am now having a similar
> > enough problem in the GUI domain that I need to understand how arrays of
> > stream pointers differ from streams.
>
> Your code doesn't have arrays of stream pointers. You declare an array of
> stream objects.
>
> Regards,
> Bruce
>
>

.