//  B1_4.cpp

#include <iostream>
using namespace std;

/*  #1 - not ambiguous
class base { public: void mf() { cout << "\n  base::mf()"; } };
class A:public virtual base { };
class B:public virtual base { };
class C : public A, public B { public: void mf() { cout << "\n  C::mf()"; } };
*/
// #2 - not ambiguous either
class base { public: void mf() { cout << "\n  base::mf()"; } };
class A:public virtual base { public: void mf() { cout << "\n  A::mf()"; } };
class B:public virtual base { };
class C : public A, public B { public: void mf() { cout << "\n  C::mf()"; } };

void main() {

  C c;
  c.mf();
  c.A::mf();
  c.B::mf();
  cout << "\n\n";
}