#include <iostream>
using namespace std; 
// pointer to member variable
// myPointerToClassVariable1.cpp
class EMP
{
protected:
		double  GrossSal; double pSal; 	
public:
	 EMP(){};
	 ~EMP(){}; 
	double sal; double calBonus; 
	void emp_sal();   
};
//defineing pointer to member variable
c
double EMP::*calBonus = &EMP::calBonus;
//
void EMP::emp_sal()
{
 cout<<"\n emp salary : " << sal;
 pSal = sal; 
 //bonus = 125.25;  
}
class Der1:public EMP
{
	public:
	void Bonus(double d1, double d2)
	{	  
	calBonus = d1; pSal = d2; 
	GrossSal = (pSal + d1); 
	cout<<"\n bonus "<<  calBonus  
	<< " : empSal " << pSal<< " : GrossSal -> " 
	<< GrossSal ;  
	}
}; 
int main()
{
	EMP emp1;
	emp1.*calBonus = 225; 
	emp1.*sal = 4500;
	emp1.emp_sal(); 
	Der1 der1;
	der1.Bonus(emp1.calBonus, emp1.sal); 
    return 0;
}