Include a header in another header file

Question

I've defined a struct item in a .h file. Now I'm defining another struct tPCB in another .h which is part of the same project, and I need the tPCB to have an item. I thought that just making part of the same TurboC project would allow me to use item in the other header file, but the compiler throws me "undefined type: ite".

I guess I somehow have to include the first header on the second one, However I have seen the same a similar code which works without doing so.

Is there any other way than just adding an #include line to make it work?

Answer 1

If your .c #includes the two .h files in the proper order, it will work. That's probably what happened in the case you remember. The safest course is to #include every file that defines your dependencies, and rely on the include guards in each .h to keep things from being multiply defined.