implement in C++ language

2. employeeId 3. basicsalary 4. displayInfo () method which will display details of Employee Create SalaryCalculator class as child class of Employee with following members 1. hra 2. da 3. pf 4. grossSalary 5. grossCal () method that will calculate gross salary of an employee 6. showSalarySlip() method that will display salary slip of an employee