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Asked: 2026-05-15T21:06:31+00:00

I’m quite new to programming larger applications. I have now written a command line

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I’m quite new to programming “larger” applications. I have now written a command line application with a few thousand lines of code in Visual C++ 2010, which compiles and works fine. Most of the code is C-compliant (I think), however, I found it useful to use some C++ constructs here and there. E.g., sometimes I used new/delete instead of malloc/free to invoke the constructor or used a std::vector or std::set for convenience. I put all my code in around 25 .h files, except for int main(), which is currently in a .cpp file.

My specific questions are:

  • I’m guessing all of my code is compiled as C++ code. Does it make sense to make some parts of the code truly C-compliant? Could I have Visual Studio compile it as C then? For large parts of the program it would be quite simple to make them C-compliant (e.g., replace new with malloc and initializer function, etc.) for some parts more hard (convert a std::vector). Or would it only make sense if everything was C? What would be the advantages? Alternatively, would it make sense to convert everything to C++? E.g., use new instead of malloc and std::string instead of char*.

  • I’m guessing it is not intended to have all code in .h files. How should I put my code into files? Except for a few, I do not have very large classes. Most of my code is procedures and functions.

My two main concerns are efficiency and a decent standard of programming. Portability is not a concern right now.

Thank you very much!!

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1 Answer

  1. Editorial Team

    IMO, there is no need to be “C” compliant in 2010. Just use C++ and all its advantages (STL, boost, all that jazz… )

    AFAIK, putting the code in header files is not normal practice, usually code goes in implementation files ( .c, .cpp, … ).

    Putting code in C/CPP files ( instead of header files) will let you optimize compile time dependencies (forward declarations, PIMPL, … ) and limit the visibility of non-public data that you do not want “users” of some piece of code to see.

    Using standard libraries will help the stability, readability and maintenance of code in the long run by reducing the potential bugs that can/will happen when dealing the complex structures and algorithms (for example, it’s easier to deal with std::vector than arrays and std::string than char*)

    M.

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