Can I include a header file in another header file?
Sorry, there is no way in C that you can access a definition of a structure, in another header file without including that file (via #include). Follow the instructions for #include. This should give the tPCB. h file access to all definitions in the article.
Table of Contents
Can I put the implementation in the header file?
It’s perfectly fine to have a function implementation in a header file. The only problem with this is breaking the one definition rule. That is, if you include the header of several other files, you will get a compile error.
Should headers include other headers?
Include in a header file only what is needed to compile it 4.3 A header file must be self-contained and self-contained. It should include any other headers and/or forwarding statements it needs to compile independently.
Should header files be included?
The header file contains only declarations and is included in the . Put only structure type declarations, function prototypes, and external declarations of global variables in the . h-file; put the function definitions and global variable definitions and initializations in the .
Why are header files bad?
Header files are bad because they are files. And these files are separate from the actual code. Or not: nobody prevents you from putting code in the header too. Why shouldn’t the header be in the same file as the source code?
What should a header file contain?
The header file contains only declarations and is included in the . c file for the module. Put only structure type declarations, function prototypes, and external declarations of global variables in the . h-file; put the function definitions and global variable definitions and initializations in the .
How are class declarations stored in a header file?
Class declarations are stored in a separate file. A file that contains a class declaration is called a header file. The class name is usually the same as the class name, with a .h extension. For example, the Time class would be declared in the Time .h file. Implementation file.
How to declare a namespace in a header file?
You can make it static if you want. Forget namespaces: they are irrelevant. What happens in your case is this: your value object is not just declared; it’s actually defined in the header file; and includes the header file in two or more C++ (CPP) files.
When do you need to include the header of a class?
When you need to approach objects of this class, you must include their header. This makes fwd dec, IMHO, not very useful. Generally, you use a direct declaration when you have 2 classes whose definitions depend on each other.
Can a header file be compiled on its own?
Any header file must be compileable on its own (or say a source file that includes a single header must be compiled). It’s a pain if I find which header file contains what I want, and then have to search for the other header files.
