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When your creating a new c++ or c file, there should be a checkbox when your creating one to "automatically generate a .h file with the same name" with the new c++ file. It should also be able to tell which kind of header you want (a c header or a c++ header) based on the type of file your creating.
C++ already has a template (C++ Class) that creates c++ file and header. Template "C Source and Header File" was fixed in bug #262155. *** This bug has been marked as a duplicate of bug 262155 ***