70a
Subj : Re: fstream arrays
To   : borland.public.cpp.borlandcpp
From : "D Kat" <disisdkat@hotmail.com>
Date : Wed Feb 25 2004 03:26 pm

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.
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.  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.


" Bruce Salzman" <bruce@nospam.org> wrote in message
news:403ce4e6$1@newsgroups.borland.com...
> > In the work I do I must have fstreams that are arrays (there are many
> > reasons for this.... I have to access the fstream I need at any
particular
> > time with a mathematical formula).  On error checking of the opening of
> > these streams I get errors.  When I ignore the error messages the files
> > actually function just fine (data is written out to them without error).
>
> Your code seems to work fine for me (after getting it to compile ;). (I
> created a new 32-bit console project for testing.)
> You create an array of default constructed fstreams which have global
scope.
> Then they are attached to some files when get_subj_fp calls open. So far,
so
> good. These streams will then remain open until your program exits. If you
> call get_subj_fp again for one of these files, you'll get an error. Or do
> you close the streams somewhere else?
>
> Regards,
> Bruce
>
>

.

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