handle ambiguity in multiple inheritance

class A{
    public:
        int i;
        void f();
};

class B{
    public:
        int i;
        void f();
};

class C : public B, public A{ // B's i hides A's i
    public:
        void g(){
            i = 0; // which i?
            f(); // which f?
        }
};