Multiple inheritance with one base class

Question

(Removed original text as it is unrelated to the current question which has already been answered. See revisions.)

Here is my example test.hpp (simplifi

Answer 1

I suggest separating the Painting and Occupied stuff into separate classes. Thus you could have:

Painted    House   Occupied
   |         |        | 
   +---------+--------+  
             |  
  Painted_Occupied_House  

Prefer not to set up the dreaded diamond inheritance. See if you can refactor to alleviate the issue.

The diamond interface brings up the possibility of injecting more defects.

Answer 2

Replace

PaintedOccupiedHouse::PaintedOccupiedHouse(int nWindows, int colorCode, int nPeople)
            : PaintedHouse(nWindows, colorCode), OccupiedHouse(nWindows, nPeople) {}

by

PaintedOccupiedHouse::PaintedOccupiedHouse(int nWindows, int colorCode, int nPeople)
            : House(nWindows), PaintedHouse(nWindows, colorCode), OccupiedHouse(nWindows, nPeople) {}

When you have virtual inheritance, there is only one instance of the virtual base class. It must be initialized in the constructor of the most derived class being constructed.