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摘要： We often see the symbol extern "C" in C++ source files.Why use this?Because C++ has overload function property like:f(int i) //definesf__Fif(int i ,char* j)//definesf__FiPcWhen we link in other fileextern f(int); // refers to f__FIextern f(int,char*) // refers to f__FiPcBut the C programmi 阅读全文