Nested inheritance

• Consider a corporate personnel database
• Need class Employee;
• Certain employees are ``empowered'' (have more responsibilities): need
  class Empowered : public Employee;
• Among the empowered employees, some are managers: need class Manager : public Empowered;
• Manager contains public data and methods from Empowered, which contains public data and methods from Employee

class Employee {
public:
Employee();
$\tilde{\;}$ Employee();
double getMonthlySalary(void);
void getEmployeeType(void);
};

$\leftarrow$

class Empowered : public Employee {
public:
Empowered();
$\tilde{\;}$ Empowered();
bool isOverworked(void);
void getEmployeeType(void);
};

$\uparrow$

class Manager : public Empowered {
public:
Manager();
$\tilde{\;}$ Manager();
bool isIncompetent(void);
void getEmployeeType(void);
};