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File extensions for C++ whats the difference?

What is the difference between *.cpp files and *.cc files? I know both are used for writing C++ source code but then why two extensions? Is it the compiler that we can use to compile those files? If yes then what are the differences. Are there any other extensions we can use for C++ File?
1 Solution
C source files often had a .c extension.
C++ source files often had a .C extension.  Notice uppercase.  

But some OS's don't differeniate between upper and lower case files names thus new extensions were created .cpp, .cc, cxx.
.C, .cpp, .cc, .cxx are just text files containing C++ source code. The extension of choice was dependant on the compiler or the standard for the operating system.
.cc generate comes from gcc which is common compiler for c++ over linux / unix ..
.cpp comes from the other windows versions of the compilers ..

dkamdarAuthor Commented:
So which one is interoperable?
.cpp and .cc works on unix (solaris)
.cc will not work under win32 environment?

And which compilers will compile .cc and .cpp files also are they cross compilable?
e.g. can gcc compile .cc, .cpp and .cxx files?
also is g++ next version or altogather a different compiler than gcc?

Thanks for earlier responses.
.C, .cpp, .cc, .cxx are just text files containing C++ source code.

If the C++ code conforms to some standards (e.g. ANSI C++) and doesn't use features specific to the compilier, operating system, or dependent on external libraries that have dependanceis, then yes they are interoperable.  This assume the compiliers for the various systems you try support the same standard.  You need to check the documentation for the specific complier to see what standards it complies with.
> And which compilers will compile .cc and .cpp files also are they cross compilable?
As long as the contents are legitimate the file extension makes no difference - a custom makefile could be set up to compile a .txt file as C++.
Although it's much better to give them meaningful extensions.
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