(1) create three files to submit:
itemtopurchase. h - class declaration
itemtopurchase. cpp - class definition
main. cpp - main() function
build the itemtopurchase class with the following specifications:
default constructorpublic class functions (mutators & accessors)
setname() & getname() (2 pts)
setprice() & getprice() (2 pts)
setquantity() & getquantity() (2 pts)
private data members
string itemname - initialized in default constructor to "none"
int itemprice - initialized in default constructor to 0
int itemquantity - initialized in default constructor to 0

We have the files and codes below with appropriate comments

Explanation:

ItemToPurchase.h:

#pragma once

#ifndef ITEMTOPURCHASE_H_INCLUDED

#define ITEMTOPURCHASE_H_INCLUDED

#include<string>

#include <iostream>

using namespace std;

class ItemToPurchase

{

public:

    //Declaration of default constructor

    ItemToPurchase();

    //Declaration of SetName function

    void SetName(string ItemName);

    //Declaration of SetPrice function

    void SetPrice(int itemPrice);

    //Declaration of SetQuantity function

    void SetQuantity(int itemQuantity);

    //Declaration of GetName function

    string GetName();

    //Declaration of GetPrice function

    int GetPrice();

    //Declaration of GetQuantity function

    int GetQuantity();

private:

    //Declaration of itemName as

    //type of string

    string itemName;

    //Declaration of itemPrice as

    //type of integer

    int itemPrice;

    //Declaration of itemQuantity as

    //type of integer

    int itemQuantity;

};

#endif

ItemToPurchase.cpp:

#include <iostream>

#include <string>

#include "ItemToPurchase.h"

using namespace std;

//Implementation of default constructor

ItemToPurchase::ItemToPurchase()

{

    itemName = "none";

    itemPrice = 0;

    itemQuantity = 0;

}

//Implementation of SetName function

void ItemToPurchase::SetName(string name)

{

    itemName = name;

}

//Implementation of SetPrice function

void ItemToPurchase::SetPrice(int itemPrice)

{

    this->itemPrice = itemPrice;

}

//Implementation of SetQuantity function

void ItemToPurchase::SetQuantity(int itemQuantity)

{

    this->itemQuantity = itemQuantity;

}

//Implementation of GetName function

string ItemToPurchase::GetName()

{

    return itemName;

}

//Implementation of GetPrice function

int ItemToPurchase::GetPrice()

{

    return itemPrice;

}

//Implementation of GetQuantity function

int ItemToPurchase::GetQuantity()

{

    return itemQuantity;

}

main.cpp:

#include<iostream>

#include<string>

#include "ItemToPurchase.h"

using namespace std;

int main()

{

    //Declaration of ItemToPurchase class objects

    ItemToPurchase item1Cart, item2Cart;

    string itemName;

    //create a variable names like itemPrice

    //itemQuantity,totalCost as type of integer

    int itemPrice;

    int itemQuantity;

    int totalCost = 0;

    //Display statement for Item1

    cout << "Item 1:" << endl;

    cout << "Enter the item name : " << endl;

    //call the getline function

    getline(cin, itemName);

    //Display statememt

    cout << "Enter the item price : " << endl;

    cin >> itemPrice;

    cout << "Enter the item quantity : " << endl;

    cin >> itemQuantity;

    item1Cart.SetName(itemName);

    item1Cart.SetPrice(itemPrice);

    item1Cart.SetQuantity(itemQuantity);

    //call cin.ignore() function

    cin.ignore();

    //Display statement for Item 2

    cout << endl;

    cout << "Item 2:" << endl;

    cout << "Enter the item name : " << endl;

    getline(cin, itemName);

    cout << "Enter the item price : " << endl;

    cin >> itemPrice;

    cout << "Enter the item quantity : " << endl;

    cin >> itemQuantity;

    item2Cart.SetName(itemName);

    item2Cart.SetPrice(itemPrice);

    item2Cart.SetQuantity(itemQuantity);

    //Display statement

    cout << "TOTAL COST : " << endl;

    cout << item1Cart.GetName() << " " << item1Cart.GetQuantity() << " @ $" << item1Cart.GetPrice() << " = " << (item1Cart.GetQuantity()*item1Cart.GetPrice()) << endl;

    cout << item2Cart.GetName() << " " << item2Cart.GetQuantity() << " @ $" << item2Cart.GetPrice() << " = " << (item2Cart.GetQuantity()*item2Cart.GetPrice()) << endl;

    totalCost = (item1Cart.GetQuantity()*item1Cart.GetPrice()) + (item2Cart.GetQuantity()*item2Cart.GetPrice());

    cout << endl;

    cout << "Total : $" << totalCost << endl;

    return 0;

}

that without the operating systems you would have to control and synchronize computer hardware.