f1004.cpp

it is a usefull thing

//=====================================
// f1004.cpp
// adjust access control
//=====================================
class Base{
  int b1;
protected:
  int b2;
  void fb2(){ b1=1; }
public:
  int b3;
  void fb3(){ b1=1; }
};//-----------------------------------
class Pri : private Base{
public:
  using Base::b3;
};//-----------------------------------
int main(){
  Pri pri;
  pri.b3 = 1;  // ok
}//====================================