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Port from Other Languages

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Rather than rewrite your Fortran or assembly language code, you should call your existing code from within Visual C++. Your functions and subroutines can reside in a separate module and be compiled on your native compiler. You can call into other-language modules from your C/C++ programs if you take into account differences in calling conventions and naming conventions among different languages. Often, these differences can be resolved by declaring other-language functions in C/C++ with keywords, such as _stdcall and extern "C". See Mixed-Language Programming Topics for more information.