cash register

design a cash register class that can be used with the InventoryItem class discussed in this chapter. the CashRegister class should be perform the following:

1, ask the user for the item and quantity being purchased.

2, get the item's cost from the InventoryItem object

3, add a 30 percent profit to the cost to get the items unit price

4, multiply the unit price times the quantity being purchased to get the purchase sub total

5, compute a 6 percent sales tax on the subtotal to get the purchase total

6, display the purchase subtotal, tax and total on the screen.

7, subtotal the quantity being purchased from the on hand variable of the InventoryItem class object

• implement both classes in a complete program. feel free to modify the InventoryItem class in any way necessary.
• input validation do not accept a negative value for the quantity of items being purchased

use the class definition file InventoryItem

use a class definition file for the CashRegister Calss

use an implementation program for the CashRegister class

use the program file

please submit Boths files. CashRegister class file, implementation program for the class, and the program file. please copy the code and screenshot too thanks.here is the InventoryItem.h please submit both three items

here is the InventoryItem.h

// This class has overloaded constructors.

#ifndef INVENTORYITEM_H

#define INVENTORYITEM_H

#include

usingnamespacestd;

classInventoryItem

{

private:

string description; // The item description

doublecost; // The item cost

intunits; // Number of units on hand

public:

// Constructor #1 (default constructor)

InventoryItem()

{ // Initialize description, cost, and units.

description = "";

cost = 0.0;

units = 0; }

// Constructor #2

InventoryItem(string desc)

{ // Assign the value to description.

description = desc;

// Initialize cost and units.

cost = 0.0;

units = 0; }

// Constructor #3

InventoryItem(string desc,doublec,intu)

{ // Assign values to description, cost, and units.

description = desc;

cost = c;

units = u; }

// Mutator functions

voidsetDescription(string d)

{ description = d; }

voidsetCost(doublec)

{ cost = c; }

voidsetUnits(intu)

{ units = u; }

// Accessor functions

string getDescription()const

{returndescription; }

doublegetCost()const

{returncost; }

intgetUnits()const

{returnunits; }

};

#endif