Re: Old iostream Library(vc6 version) and 64bit compilation

Ulrich Eckhardt <>
Wed, 15 Apr 2009 09:10:37 +0200
Ghanashyam wrote:

The following program compiles and executes fine in VC6 compiler.

#include "stdafx.h"
#include <iostream.h>

This header is not part of standard C++ as any halfway decent C++ book would
have taught you.

When I try to compile it in VS2008 the compiler complains about iostream.h
and however I had an workround. Used the header from VC6 installation and
linked to LIBCIMT.lib and LIBCIMTD.lib coming with VC6.

Please, fix your code instead. Mostly it is just a matter of using standard
headers and taking the according parts from namespace std instead of the
global namespace.

Then the program compiles and executes fine in 32bit environment.

I'd say that is pure luck.

[...]it involves changing the code and legacy code base is quite
large too. Is there any other work around to resolve above issue
with minimal code change ?

The code change actually is rather small in typical legacy applications,
though the same changes have to be applied repeatedly, which makes the work
required for it larger again.

Try it, it's less work than you probably expect.


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