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Old 05-12-2005, 04:45 AM   #1
aes canis
Registered: May 2005
Location: Finland
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GCC-3.3.4 C++ & Depreciated libraries

I've done few web searches, but can't find anything really concrete...

When I started my adventures in C++ I used a couple of "Teach yourself... type guides. One "TYC++ in 21 days", and the other from

However, after trying to compile the initial "Hello world" code, I get and error message saying the code has refered to a depreciated library - the examples of "Hello world" I used, calls up <iostream.h>. It also goes on about the C++ standards chapter 17 something or other...

I'm OK with that, as the example I found which showed how to use gcc c++, used <iostream> in it's version of "Hello world", which works.
There were a few other distinct differences as well between gcc c++'s idea of c++ and the tutorials I have.

So, how can I get GCC-3.3.4 C++ to compile code with these depreciated libraries, such as iostream.h, or any other .h library for that matter?

Or have I missed something relly basic/stupid?
Old 05-12-2005, 05:03 AM   #2
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it'll still compile it, just give you a warning about using that method ( I don't know about g++-3.4 or 4.x, they may make it illegal).

here is another reference for you if you are looking for good books on c++ ( and it's free):
Old 05-12-2005, 05:43 AM   #3
aes canis
Registered: May 2005
Location: Finland
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Original Poster
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Groovey stuff, thanks - I've just now downloaded them, so watch this space for more cries of help...
Old 05-12-2005, 06:12 AM   #4
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The .h extension of the standard libs is non-standard. The tutorials you used (as did I) showed the OLD way of doing it; as of the new ISO standard you drop the .h:
#include <iostream>

PS That is an international C++ standard; not g++.

Last edited by ta0kira; 05-12-2005 at 06:13 AM.


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