C$++$ pls;

Implement a class hierarchy for employees in a company. Create:

a base class Employee with

the following private member variables:

name: a string;employeeID: an int;salary: a double;

public getters and setters for all the member variables;

a derived class Manager with:

an additional private member variable department of type string;a public getter and setter for the department;a public constructor Manager$($string name, int employeeID, double salary, string department$)$;a public displayDetails$()$ function member that returns a string representing the object in the following format:

Manager Name: $[$name$]$ Employee ID: $[$employeeID$]$ Salary: $ $[$salary$]$ Department: $[$department$]$

a derived class Staff with:

an additional private member variable position of type string;a public getter and setter for the position;a public constructor Staff$($string name, int employeeID, double salary, string position$)$;a public displayDetails$()$ function member that returns a string representing the object in the following format:

Staff Name: $[$name$]$ Employee ID: $[$employeeID$]$ Salary: $ $[$salary$]$ Position: $[$position$]$

Note: when displaying the value of salary in the displayDetails function, use only one digit after the decimal point.