Does c++ have an uniform class library?

[JTL]

I have learnt java before and now begin to learn c++

what puzzle me is that seem that different SDKs(c++builder , vs.net,
gcc..) has its own class library
we know that in java there are only one uniform class library
so that the codes I written in JBuilder can just copy to JCreator or
Eclipse
and they all run well

does c++ have such an uniform class library so that I could just learn
only one time
and then I can use it in c++builder or vs.net or gcc, just the same
codes
what's this uniform class library's name?

if they(c++builder , vs.net,gcc) use different librarys, what class
library do they use?
which library is most usefully or most common ?

Thank you very much in advance.

[Davlet Panech]

JTL wrote:

I have learnt java before and now begin to learn c++

what puzzle me is that seem that different SDKs(c++builder , vs.net,
gcc..) has its own class library
we know that in java there are only one uniform class library
so that the codes I written in JBuilder can just copy to JCreator or
Eclipse
and they all run well

does c++ have such an uniform class library so that I could just learn
only one time
and then I can use it in c++builder or vs.net or gcc, just the same
codes
what's this uniform class library's name?

Yes, the language standard (ISO/IEC 14882) describes a number library
facilities that every C++ compiler is supposed to provide. These
libraries are sometimes called "the Standard C++ library", or "standard
template library, STL" (they are not 100% identical, STL is older).

if they(c++builder , vs.net,gcc) use different librarys, what class
library do they use?
which library is most usefully or most common ?

The standard library is the common subset of them all.

D.

[Alf P. Steinbach]

* JTL:

I have learnt java before and now begin to learn c++

what puzzle me is that seem that different SDKs(c++builder , vs.net,
gcc..) has its own class library

In addition to the C++ standand library, yes.

we know that in java there are only one uniform class library
so that the codes I written in JBuilder can just copy to JCreator or
Eclipse

No, we don't know that. Java has a more extensive "standard" library
than C++, except that (nit-picking my own statement) Sun chickened out
from the standardization process so that Java isn't standardized.
Still, Java isn't so poor a language that there aren't any third-party
libraries.

and they all run well

That might seem to be the case for simple applications, yes.

does c++ have such an uniform class library so that I could just learn
only one time
and then I can use it in c++builder or vs.net or gcc, just the same
codes
what's this uniform class library's name?

That's the C++ standard library. But the standard library intentionally
covers only functionality that is very general and platform-independent.
The C++ model is that instead of one huge standard library you can
choose the third-party library you want, or make your own (and that's
why Java's platform-independence is founded on a virtual machine and
platform-specific adaptions of its libraries, written in C and C++).

if they(c++builder , vs.net,gcc) use different librarys, what class
library do they use?
which library is most usefully or most common ?

Undoubtedly the C++ standard library.

--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

[Erik Wikström]

On 2006-12-01 18:59, JTL wrote:

I have learnt java before and now begin to learn c++

what puzzle me is that seem that different SDKs(c++builder , vs.net,
gcc..) has its own class library we know that in java there are only
one uniform class library so that the codes I written in JBuilder can
just copy to JCreator or Eclipse and they all run well

does c++ have such an uniform class library so that I could just
learn only one time and then I can use it in c++builder or vs.net or
gcc, just the same codes what's this uniform class library's name?

if they(c++builder , vs.net,gcc) use different librarys, what class
library do they use? which library is most usefully or most common ?

There is something called STL (Standard Template Library) which is a
very powerful library, though it's nowhere near as comprehensive as
those of Java or .Net or most others. However depending on what you
want to do with your application they can be more than enough. STL is
part of the C++ standard so you can expect it to work with any decent
C++ compiler.

STL does not include any GUI-features so if you're out to make
applications with a GUI you'll have to find some third-party library to
use, there are a couple of third-party libraries/frameworks providing
GUI-classes and more that try to be platform-independent, meaning that
the code should just work when going from Linux to Windows or such. Qt
and GTK are examples of such libraries/frameworks.

--
Erik Wikström

[jolz]

Apart from STL there are many libraries. Boost is the most popular, but
I think you might like this one:
http://appinf.com/poco/docs/
Looks quite similar, doesn't it?

[JTL]

Thank you very much for your help

I get more clearly now
different SDK have its own library
but all of they can use the Standard C++ library
so now I plan to begin with the STL
and use MFC to make UI

[IR]

JTL wrote:

and use MFC to make UI

You'd really better use wxWidgets or Qt. Or if you *have* to use
something Microsoft specific, their WTL. If you have access to Borland
C++ Builder, their VCL is not that bad for RAD (and it is very easy to
learn and use).

But the MFC is one of the worst pieces of code I ever saw, and is
really outdated by now. Unless you have legacy MFC code to maintain
(which, according to your post, I doubt), don't even bother learning
it.

Just my thoughts though.

--
IR

[JTL]

do you means wxWidgets or Qt is better than MFC in making windows UI?
but I haven't heard them before......
I think as I want to make UI in MS windows,it's better to choose MS's
MFC....

[BobR]

JTL wrote in message <11************ ********@80g200 0cwy.googlegrou ps.com>...

>do you means wxWidgets or Qt is better than MFC in making windows UI?
but I haven't heard them before......
I think as I want to make UI in MS windows,it's better to choose MS's
MFC....

wxWidgets URL: http://www.wxwidgets.org

--
Bob R
POVrookie

[Erik Wikström]

On 2006-12-04 16:03, JTL wrote:

do you means wxWidgets or Qt is better than MFC in making windows UI?
but I haven't heard them before......
I think as I want to make UI in MS windows,it's better to choose MS's
MFC....

Just because you've heard a lot about MFC does not make it good, rather
you might have heard about it because many consider it not good :-)
And besides, MFC is on it's way out, if you want to learn something, go
for something that will last a few years, if you still want to go the MS
way take a look at .Net. If not you might want to take a look at Qt,
which is quite well known (along with others).

--
Erik Wikström