Base Class Undefined

[Khelder]

I am working on a project, and am getting the base class undefined error. I have one class in one header, and another class in another header. The second class inherits from the first. I made a seperate project, and it worked fine. I have been looking for quite awhile now on how to fix this, and can't find anything that works. I have tried declaring the base class(ex: Class Unit before the inheriting one, and I am positive the includes are all there. Is there something about compiler options I should know to fix this? Is there a way to set the order in which things are compiled?

Thnaks for any help,

Khelder

[XSquared]

Which compiler?

[Polymorphic OOP]

Originally posted by Khelder
I am working on a project, and am getting the base class undefined error.

Because you are only exposing your child class to the declaration of the class instead of the definition.

class A;
class B : A {};

is not enough information for inheritance. class B needs to know what class A is. If you are including the file with A's definition, then make sure that you don't have class A's file including class B's file (or class A's file includes a file which includes class B's file). If you do and the translation unit you are currently in includes file A before it includes file B and you have inclusion guards, then when class B gets compiled it will not have access to class A's definition. Hence you get a base class undefined error.

[Khelder]

Ah cool. Thanks for clearing that up for me. Works now!

Khelder