class base0 {};

class base1 {};

// interface0 is always considered an interface class:
// - It has at least one method.
// - All methods are pure virtual.
// - It has no more than one scalar data member.
class interface0 {
  public:
    char *id;
    virtual void start(void) = 0;
};

class derivedA :     // 'Multiple Inheritance with Too Many Protected Base Classes' warning issued here
  protected base0,
  protected base1
{};

class derivedB:                                 // only one base class inherited as protected
  protected base0,
  private base1
{};

class derivedC:                                 // only one non-interface inherited
                                                // ('Multiple Inheritance with Protected Interface Class'
                                                //  warning issued here if enabled)
  protected base0,
  protected interface0
{
  void start(void) {};
};