// This code illustrates ambiguity.
// The assignment to d.x will not compile.

class Base1 {
  public:
    int x;
};

class Base2 {
  public:
    int x;
};


class Derived : public Base1, public Base2 {
  public:
    int y;
};

int main() {
    Derived d;
    d.y = 0;		// Great--there's only one y, in Derived.
    d.x = 1;		// Oops--Base1::x or Base2::x?
}