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c++ Programming Glossary: xxx.hWhy including same headers in multiple cpp files and then their compilation works? [duplicate] http://stackoverflow.com/questions/20023346/why-including-same-headers-in-multiple-cpp-files-and-then-their-compilation-work have 2 cpp files f1.cpp and f2.cpp and also a header file xxx.h. f1.cpp has the following source code #include iostream #include.. has the following source code #include iostream #include xxx.h using namespace std int main rect rplace polar pplace cout Enter.. source code #include iostream #include cmath #include xxx.h polar rect_to_polar rect xypos using namespace std polar answer..
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