Nested inheritance and hiding

Examples of usage

Employee e1;
Empowered e2;
Manager e3;
cout « e1.getMonthlySalary(); // output the monthly salary
cout « e2.getMonthlySalary(); // call to the same fn as above
e1.getEmployeeType(); // output: Employee
e2.getEmployeeType(); // output: Empowered (call to different fn)
e3.getEmployeeType(); // output: Manager (call to different fn)
e3.Employee::getEmployeeType(); // output: Employee (forced call)
cout « e1.isIncompetent(); // ERROR, not in base class