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lang-cpp
#include <iostream>? Those aren't just for the GCC library. In fact, its defined in the 1997 C++ standard, section 17.3.1.2. I would avoid naming files like that. You can, but the reason the C++ standard library did that was probably to avoid naming conflicts. I actually find it really weird when compilers automatically add a '.h' when you include a header, it seems pretty unstandard to me. And I don't ever see anyone name headers without suffix except for the c++ standard library.#include <someclass>to be read as#include <someclass.hpp>on all compilers. Your code will break.