Question

I know there is a related question: Static variables in static method in base class and inheritance

But I am wondering if this is the same for datamembers?

suppose I have a class:

class A
{
protected:
   static int NUMBER;
private:
   static int OTHERNUMBER;
};

class B : public A
{
};

Will B have another instance than A of NUMBER?

Will B have another instance than A of OTHERNUMBER?

Answer 1

Will B have another instance than A of NUMBER? Will B have another instance than A of OTHERNUMBER?

No, and no. Declaring a static variable in any class scope only declares a single variable, and no extra copies of it will appear in any other scope.