#include using namespace std; class Person { //content of Person }; class Employee:public Person { public: Employee(string fName, string lName, double sal) { FirstName = fName; LastName = lName; salary = sal; } string FirstName; string LastName; double salary; void show() { cout << "First Name: " << FirstName << " Last Name: " << LastName << " Salary: " << salary<< endl; } void addBonus(double bonus) { salary += bonus; } }; class Manager :public Employee { public: Manager(string fName, string lName, double sal, double comm) :Employee(fName, lName, sal) { Commision = comm; } double Commision; double getComm() { return Commision; } }; class Clerk :public Employee { public: Clerk(string fName, string lName, double sal, Manager* man) :Employee(fName, lName, sal) { manager = man; } Manager* manager; Manager* getManager() { return manager; } }; void congratulate(Employee* emp) { cout << "Happy Birthday!!!" << endl; emp->addBonus(200); emp->show(); }; int main() { //pointer to base class object Employee* emp; //object of derived class Manager m1("Steve", "Kent", 3000, 0.2); Clerk c1("Kevin","Jones", 1000, &m1); //implicit upcasting emp = &m1; //It's ok cout<FirstName<salary<getComm(); congratulate(&c1); congratulate(&m1); cout<<"Manager of "<FirstName; }

upcasting ex.cpp