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Platform independent or not

Posted on 2002-03-14
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Is C++ a platform indepented languange or not ?
 if yes why ?
 one of my friend argude about it as plateform independent languge , any one know about it in detail
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Question by:yasinmon
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pjknibbs earned 25 total points
ID: 6864396
The language itself is platform independent, in that there is a standard way it's supposed to work across all platforms. However, there's no platform-independent way in C++ of, say, opening a window on a GUI or reacting to mouse clicks--these are all implemented via specific APIs on specific platforms, so a C++ program written for a Mac will not compile and run on a Windows PC. (However, a C++ program written for a UNIX command-line might well compile as a Windows console-mode application--it just wouldn't be able to do anything operating system specific).

Note that even a cross-platform language like Java would suffer this problem if it weren't for the fact the language definition specifies a generic way of doing things normally done by the operating system--in other words, Java has its own functions with their own syntax for doing things you would need to use the operating system calls for in C++.
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by:jwenting
ID: 6864879
to summarise, yes and no.
The core language is platform independent but the libraries used for each OS are not and neither are the compiled binaries (even when using no platform specific code).

Many companies and groups wanting a platform independent program end up writing a core that is indeed platform independent (needing only recompilation on the new platform) plus a set of libraries that provide the platform-dependent calls via an interface that is identical for each platform.
They can then ship the core + the library for the platform the customer orders for each hardware/OS supported.
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by:griessh
ID: 6865135
C++ is completely platform independent. You can write C++ programs even on paper :-)

The platform comes into the game when you use libraries that have access to your specific system. That is usually graphics, filesystem and peripherals.

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by:Anthony Perkins
ID: 6870355
Please maintain your open questions:

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Thanks,
Anthony
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by:yasinmon
ID: 6877471
hai  griessh  
   your funny guy , I agreed
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by:griessh
ID: 6955372
Dear yasinmon

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Force accepted

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