When is a non-static const data member more useful than a const static one?

Question

In C++ there are static and non-static const data members. When I want a constant, I always make it static because it does not make sense to have multi

Answer 1

1. A static const applies to the class
2. A const applies to the object

E.g.

class Verticies {
    public:
       const int colour;
       static const int MAX_VERTICIES = 100;
       Point points[MAX_VERTICIES];
       Verticies(int c) : colour(c) { }
       // Etc
};

Here MAX_VERTICIES applies to all objects of type Verticies. But different objects could have different colours and that colour is fixed on construction