Including headers in a header file

Hi, where should you place #include's inside of a header file for "best practice" ?

Ex:

Code:

// Header.h

// #include here or below?

#ifndef HEADER_H_
#define HEADER_H_

// #include here or above?

// ...

#endif HEADER_H_

Or does it not matter at all?

If the headers you're including are also header-guarded it shouldn't matter, but they should be inder the header guards. So between the #define and #endif. If you think about it that part of the code will only be compiled once, and that's all you need/want.

Ah makes sense. Thanks! ^^

Also, if you do it the other way round, the include guard optimization that most compilers have doesn't kick in.