#include <iostream>
using namespace std;

typedef const char * String;
typedef unsigned short ushort;

class Person{
public:
	String Name;
	Person(String name):Name(name){}
};
class Student:public Person{
public:
	float	CGPA;
	Student(String name, float cgpa):Person(name),CGPA(cgpa){
	}	
	//Student():Name(""),CGPA(0.0F){
	Student():Student("",0.0F){
	}
};
class Staff:public Person{
public:
	double	Salary;
	Staff(String name, double salary):Person(name),Salary(salary){
	}
	virtual double getMonthlySalary()=0; //Pure Virtual Function (Abstract Method)
	const double EPF_CONTRIBUTION=0.11;
};

class Lecturer:public Staff{
public:
	float	Allowance;
	Lecturer(String name, double salary, float allowance):
		Staff(name,salary),Allowance(allowance){
	}
	double getMonthlySalary(){//The operation
		return (1.0-EPF_CONTRIBUTION)*Salary + Allowance;//The Method!
	}
};

class Clerk:public Staff{
public:
	ushort	OTHours;
	float	OTRate;
	Clerk(String name, double salary, float otRate):
		Staff(name,salary),OTRate(otRate){
		OTHours = 0;
	}
	double getMonthlySalary(){//The operation
		return (1.0-EPF_CONTRIBUTION)*Salary + (OTHours * OTRate);//The Method!
	}	
};

class Manager:public Staff{
public:
	float CarAllowance;
	Manager(String name, double salary, float carAllowance):
		Staff(name,salary),CarAllowance(carAllowance){
	}
	virtual double getMonthlySalary(){//The operation
		return (1.0-EPF_CONTRIBUTION)*Salary + CarAllowance;//The Method!
	}
};

class HRManager:public Manager{
public:
	HRManager(String name, double salary):Manager(name,salary,500.0F){
	}
};

class SalesManager:public Manager{
public:
	float 	PetrolAllowance;
	double 	MonthlySales;
	SalesManager(String name, double salary, 
		float carAllowance,float petrolAllowance):
			Manager(name,salary,carAllowance),
			PetrolAllowance(petrolAllowance),MonthlySales(0.0){
	}	
	double getMonthlySalary(){//The operation
		return (1.0-EPF_CONTRIBUTION)*(0.6*Salary) + CarAllowance + PetrolAllowance + (0.1*MonthlySales);//The Method!
	}
};

void ShowManagerInfo(Manager *m){
  cout<<"Monthly Salary:$"<<m->getMonthlySalary()<<"\tName:"<<m->Name<<endl;
}

int main(){
	cout<<sizeof(SalesManager)<<endl;
	
	//Staff *ps = new Staff("Abumama", 6666);
	Lecturer *pl = new Lecturer("Abumama", 6666, 800);
		
	Manager* m = new Manager("Ahmad",5000,450.0F);
	HRManager* hrm= new HRManager("Abu",6000);
	SalesManager* sm= new SalesManager("Ali",5000,450.0F,600.0F);
	
	ShowManagerInfo(m);

	ShowManagerInfo(hrm);


	m = sm;
	
	SalesManager * sm2 = (SalesManager*)m;
	

	sm->MonthlySales = 100000.0;
	ShowManagerInfo(sm);
	
	delete m;
	delete sm;
	delete hrm;
	
	return 0;
}