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*. h or *. hpp for your C++ headers class definitions another convention is to use h for C headers and hpp for C++; a good example would be the boost library Quote from Boost FAQ, File extensions communicate the "type" of the file, both to humans and to computer programs The ' h' extension is used for C header files, and therefore communicates the wrong thing about C++ header files
How does #include lt;bits stdc++. h gt; work in C++? [duplicate] Se e g GCC 4 8 0 bits stdc++ h source Using it would include a lot of unnecessary stuff and increases compilation time Edit: As Neil says, it's an implementation for precompiled headers If you set it up for precompilation correctly it could, in fact, speed up compilation time depending on your project
c++ - . c vs . cc vs. . cpp vs . hpp vs . h vs . cxx - Stack Overflow * h or * hpp for your class definitions What is the difference between cc and cpp file suffix? I used to think that it used to be that: h files are header files for C and C++, and usually only contain declarations c files are C source code cpp files are C++ source code (which can also be C source code)
Creating your own header file in C - Stack Overflow You want to place #ifndef #defines around your h code so that if you include the same h twice in different parts of your programs, the prototypes are only included once client h #ifndef CLIENT_H #define CLIENT_H short socketConnect(char *host,unsigned short port,char *sendbuf,char *recievebuf, long rbufsize); #endif ** CLIENT_H *
What is the difference between a . cpp file and a . h file? h files, or header files, are used to list the publicly accessible instance variables and methods in the class declaration cpp files, or implementation files, are used to actually implement those methods and use those instance variables The reason they are separate is because h files aren't compiled into binary code while cpp files are
Why are #ifndef and #define used in C++ header files? The cost of opening a file, discarding all its contents, and closing it over and over might not sound like much, but for a large header included transitively by hundreds of other headers (e g windows h, the low-level stuff providing simple type definitions like stdint h, types h, etc ), the difference between opening it exactly once per source file and opening it a hundred times (where only