Hi Luiz, > Please, it would have some reason to use define folders ? Often, a #define is used to specify one of: + a constant + a macro function + a header guard + an assert that can be compiled out in release code + a feature exclusion trigger (stubs out the feature) I'm not 100% sure what you mean by "use define folders", but I think that the answer is: no, #define's are not normally used to define folders. Folders (or directories) are created with the mkdir command, or in a GUI, with whatever metaphor the GUI uses to create a folder. For instance, OS X uses Command-Shift-N key sequnce, or File > New Folder from the menu system, in the Finder. Whereas Apple ProDOS uses CREATE folder,DIR (defaults to ,DIR if type is omitted). > These foldes can be used in GCC ? No, the folders have to be pre-existing. The pre-existing directories can be accessed using relative paths in the #include statements, or by using the compilation switch -I to specify where header files are located. > Please, do you know any C/C++ (C preprocessor itself) forum for begginers ? None which with I am familiar, that I could recommend. I've been programming in C from 1985-1990, and in C++ from 1990 on -- so I haven't had much exposure to beginner forums for C and C++. Google knows all. And although some may consider this sacrilege, for beginner programmers I strongly urge Java <java.sun.com> and Eclipse IDE <www.eclipse.org>, rather than C or C++. In particular, Java 2 SE 5.0u6 (or later), and Eclipse 3.2M5a (or whatever is the latest and greatest milestone pre-release). Other Java IDEs that I've heard of are NetBeans and IntelliJ IDEA. There are probably many others, but I'm not familiar with them. Sincerely, --Eljay
