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*. h or *. hpp for your C++ headers class definitions I've always used a * h file for my class definitions, but after reading some boost library code, I realised they all use * hpp I've always had an aversion to that file extension, I think mainly be
c - What mean file with extension h. in? - Stack Overflow Typically, a h in file is a header template that is filled in to become the actual header by a configure script based on the outcome of several tests for features present on the target platform
. c vs . cc vs. . cpp vs . hpp vs . h vs . cxx - Stack Overflow Possible Duplicates: * 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
Why use #ifndef CLASS_H and #define CLASS_H in . h file but not in . cpp? In your case, the contents of your file class h is inserted in place of the line #include "class h Since you might be includein your header file in several places, the #ifndef clauses avoid duplicate declaration-errors, since the preprocessor directive is undefined only the first time the header file is included