From: Jason Green <news AT jgreen4 DOT fsnet DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Manipulators, where are they?
Date: Mon, 20 Mar 2000 22:45:27 +0000
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roadraat AT aol DOT com (RoadRaat) wrote:

> This code is taken from Ivor Horton's Beginning C++ from Wrox.  He says that
> 'fixed' and 'scientific' come from iostream.  I had thought that they came from
> iomanip, so I was going crazy trying to verify that I had installed everything
> correctly.  I have the headers alright, but iostream doesn't seem to function
> the way my textbook leads me to expect.

According to The C++PL 3rd Ed. the standard manipulators are defined
in <ios>, <istream>/<ostream>/<iostream> and <iomanip> depending what
they operate on.  My interpretation is that fixed and scientific
belong in <ios>, but GCC does not have that header.  :(

> >> Why won't it work with DJGPP?
> >
> >Most likely this feature has not yet been implemented in GCC.
> 
> If that is true, then I will stop tearing out my hair presuming that I'm simply
> doing something wrong.  So I can conclude the following?  DJGPP will NOT yet 
> allow me to set a format just by typing 'fixed', like in my first example?  I
> MUST use the old way of typing 'cout.setiosflags(ios::fixed)'?

Almost.  You can conclude that GCC will not yet allow you to set a
format with fixed.  DJGPP does not provide the C++ library
implementation.

As a workaround, you could write your own versions of fixed and
scientific based on the manipulators for hex/oct/dec from <iostream.h>

> I really began to suspect that when I started looking at the iostream file
> itself, which merely forwards to iostream.h, the OLD ANSI standard.  Am I
> understanding this correctly?

Yes I think so.  If you report this to the relevant GCC mailing list
(or look in the GCC FAQ) you should get a more definitive answer.