I need help with this assignment, can someone HELP ?

This is the assignment:

Online shopping cart (continued) (C++)

This program extends the earlier "Online shopping cart" program. (Consider first saving your earlier program).

(1) Extend the ItemToPurchase class per the following specifications:

• Parameterized constructor to assign item name, item description, item price, and item quantity (default values of 0). (1 pt)
• Public member functions
• SetDescription() mutator & GetDescription() accessor (2 pts)
• PrintItemCost() - Outputs the item name followed by the quantity, price, and subtotal
• PrintItemDescription() - Outputs the item name and description
• Private data members
• string itemDescription - Initialized in default constructor to "none"

Ex. of PrintItemCost() output:

Bottled Water 10 @ $1 = $10 

Ex. of PrintItemDescription() output:

Bottled Water: Deer Park, 12 oz. 

(2) Create three new files:

• ShoppingCart.h - Class declaration
• ShoppingCart.cpp - Class definition
• main.cpp - main() function (Note: main()'s functionality differs from the warm up)

Build the ShoppingCart class with the following specifications. Note: Some can be function stubs (empty functions) initially, to be completed in later steps.

• Default constructor
• Parameterized constructor which takes the customer name and date as parameters (1 pt)
• Private data members
• string customerName - Initialized in default constructor to "none"
• string currentDate - Initialized in default constructor to "January 1, 2016"
• vector < ItemToPurchase > cartItems
• Public member functions
• GetCustomerName() accessor (1 pt)
• GetDate() accessor (1 pt)
• AddItem()
  • Adds an item to cartItems vector. Has parameter ItemToPurchase. Does not return anything.
• RemoveItem()
  • Removes item from cartItems vector. Has a string (an item's name) parameter. Does not return anything.
  • If item name cannot be found, output this message: Item not found in cart. Nothing removed.
• ModifyItem()
  • Modifies an item's description, price, and/or quantity. Has parameter ItemToPurchase. Does not return anything.
  • If item can be found (by name) in cart, check if parameter has default values for description, price, and quantity. If not, modify item in cart.
  • If item cannot be found (by name) in cart, output this message: Item not found in cart. Nothing modified.
• GetNumItemsInCart() (2 pts)
  • Returns quantity of all items in cart. Has no parameters.
• GetCostOfCart() (2 pts)
  • Determines and returns the total cost of items in cart. Has no parameters.
• PrintTotal()
  • Outputs total of objects in cart.
  • If cart is empty, output this message: SHOPPING CART IS EMPTY
• PrintDescriptions()
  • Outputs each item's description.

Ex. of PrintTotal() output:

John Doe's Shopping Cart - February 1, 2016 Number of Items: 8 Nike Romaleos 2 @ $189 = $378 Chocolate Chips 5 @ $3 = $15 Powerbeats 2 Headphones 1 @ $128 = $128 Total: $521 

Ex. of PrintDescriptions() output:

John Doe's Shopping Cart - February 1, 2016 Item Descriptions Nike Romaleos: Volt color, Weightlifting shoes Chocolate Chips: Semi-sweet Powerbeats 2 Headphones: Bluetooth headphones 

(3) In main(), prompt the user for a customer's name and today's date. Output the name and date. Create an object of type ShoppingCart. (1 pt) Ex.

Enter customer's name: John Doe Enter today's date: February 1, 2016 Customer name: John Doe Today's date: February 1, 2016 

(4) Implement the PrintMenu() function. PrintMenu() has a ShoppingCart parameter, and outputs a menu of options to manipulate the shopping cart. Each option is represented by a single character. Build and output the menu within the function.

If the an invalid character is entered, continue to prompt for a valid choice. Hint: Implement Quit before implementing other options. Call PrintMenu() in the main() function. Continue to execute the menu until the user enters q to Quit. (3 pts) Ex:

MENU a - Add item to cart d - Remove item from cart c - Change item quantity i - Output items' descriptions o - Output shopping cart q - Quit Choose an option: 

(5) Implement Output shopping cart menu option. (3 pts) Ex:

OUTPUT SHOPPING CART John Doe's Shopping Cart - February 1, 2016 Number of Items: 8 Nike Romaleos 2 @ $189 = $378 Chocolate Chips 5 @ $3 = $15 Powerbeats 2 Headphones 1 @ $128 = $128 Total: $521 

(6) Implement Output item's description menu option. (2 pts) Ex.

OUTPUT ITEMS' DESCRIPTIONS John Doe's Shopping Cart - February 1, 2016 Item Descriptions Nike Romaleos: Volt color, Weightlifting shoes Chocolate Chips: Semi-sweet Powerbeats 2 Headphones: Bluetooth headphones 

(7) Implement Add item to cart menu option. (3 pts) Ex:

ADD ITEM TO CART Enter the item name: Nike Romaleos Enter the item description: Volt color, Weightlifting shoes Enter the item price: 189 Enter the item quantity: 2 

(8) Implement remove item menu option. (4 pts) Ex:

REMOVE ITEM FROM CART Enter name of item to remove: Chocolate Chips 

(9) Implement Change item quantity menu option. Hint: Make new ItemToPurchase object and use ItemToPurchase modifiers before using ModifyItem() function. (5 pts) Ex:

CHANGE ITEM QUANTITY Enter the item name: Nike Romaleos Enter the new quantity: 3

P.S

I am including all files and the code that I have so far....

the Code is Below:

ShoppingCart.h (header file)

#ifndef SHOPPINGCART_H_

#define SHOPPINGCART_H_

#include

#include

#include "ItemToPurchase.h"

using namespace std;

class ShoppingCart

{

private:

string name;

string date;

vector item;

public:

ShoppingCart(string name, string date);

virtual ~ShoppingCart();

const string& getDate() const;

void setDate(const string& date);

const string& getName() const;

void setName(const string& name);

void add(ItemToPurchase &item);

void remove(string itemName);

void update(ItemToPurchase &item);

void showDescription();

void showCart();

void showOption();

};

#endif

Shoppingcart.cpp

#include "ShoppingCart.h"

#include

#include

using namespace std;

ShoppingCart::ShoppingCart(string name = "none", string date = "January 1, 2016")

{

this->name=name;

this->date=date;

}

const string& ShoppingCart::getDate() const

{

return date;

}

void ShoppingCart::setDate(const string& date)

{

this->date = date;

}

const string& ShoppingCart::getName() const

{

return name;

}

void ShoppingCart::setName(const string& name)

{

this->name = name;

}

void ShoppingCart::add(ItemToPurchase &newItem)

{

int set = 0;

if(newItem.GetName().compare("none") != 0)

{

//vector::iterator it;

//for (it = item.begin() ; it != item.end(); ++it)

for(int i=0;i

{

if(item.at(i).GetName() == newItem.GetName())

{

cout<<"Item is already in cart. Nothing added."<

set = 1;

break;

}

}

if(set == 0)

item.push_back(newItem);

}

}

void ShoppingCart::remove(string itemName)

{

//vector::iterator it;

int i=0;

//for (it = item.begin() ; it != item.end(); ++it)

for(int j=0;j

{

i++;

if(item.at(j).GetName() == itemName)

{

cout<<"found...removing "<

item.erase (item.begin()+j);

break;

}

}

if(i == 0)

{

cout<<"Shopping cart is empty."<

cout<<"No item found with name "<

}

}

void ShoppingCart::update(ItemToPurchase &updateItem)

{

///vector::iterator it;

int i=0;

//for (it = item.begin() ; it != item.end(); ++it)

for(int j=0;j

{

i++;

if(item.at(i).GetName() == updateItem.GetName())

{

item.at(i).SetName(updateItem.GetName());

item.at(i).SetDescription(updateItem.GetDescription());

item.at(i).SetPrice(updateItem.GetPrice());

item.at(i).SetQuantity(updateItem.GetQuantity());

break;

}

}

if(i == 0)

{

cout<<"Shopping cart is empty."<

cout<<"No itemfound with name "<

}

}

ShoppingCart::~ShoppingCart()

{

}

void ShoppingCart::showDescription()

{

vector::iterator it;

int i=0;

cout<<""<

//for (it = item.begin() ; it != item.end(); ++it)

for(int j=0;j

{

cout << item.at(i).GetName() << " : " << item.at(i).GetDescription()<< endl;

i++;

}

if(i == 0)

cout<<"Shopping cart is empty."<

}

void ShoppingCart::showCart()

{

//vector::iterator it;

int i = 0;

double tot = 0;

cout<<""<

//for (it = item.begin() ; it != item.end(); ++it)

for(int j=0;j

{

cout << item.at(i).GetName() << " " << item.at(i).GetQuantity() << " @ $" << item.at(i).GetPrice() << " = $" << item.at(i).GetPrice() * item.at(i).GetQuantity() << endl;

tot = tot + (item.at(i).GetPrice() *item.at(i). GetQuantity());

i++;

}

if(i == 0)

{

cout<<"Shopping cart is empty."<

cout<<"Total: $"<

}

}

void ShoppingCart::showOption()

{

cout<<"\t\tMenu"<

cout<<"add - Add item to cart"<

cout<<"remove - Remove item from cart"<

cout<<"change - Change item quantity"<

cout<<"descriptions - Output items' descriptions"<

cout<<"cart - Output shopping cart"<

cout<<"options - Print the options menu"<

cout<<"quit - Quit"<

}

itemToPurchase.h

#ifndef ItemToPurchase_H_

#define ItemToPurchase_H_

#include

using namespace std;

class ItemToPurchase

{

private:

string itemName;

string itemDescription;

double itemPrice;

int itemQuantity;

public:

ItemToPurchase();

ItemToPurchase(string name, string desc, double price, int quantity);

void SetName(string name);

void SetPrice(double price);

void SetQuantity(int quantity);

string GetName();

double GetPrice();

int GetQuantity();

const string& GetDescription() const;

void SetDescription(const string& itemDescription);

void clean();

};

#endif

itemToPurchase.cpp

#include "ItemToPurchase.h"

ItemToPurchase::ItemToPurchase()

{

itemName = "none";

itemDescription = "none";

itemPrice = 0;

itemQuantity = 0;

}

ItemToPurchase::ItemToPurchase(string name, string desc, double price, int quantity)

{

if(name == "'")

name = "none";

if(desc == "")

desc = "none";

itemName = name;

itemDescription = desc;

itemPrice = price;

itemQuantity = quantity;

}

void ItemToPurchase::SetName(string name)

{

itemName = name;

}

void ItemToPurchase::SetPrice(double price)

{

itemPrice = price;

}

void ItemToPurchase::SetQuantity(int quantity)

{

itemQuantity = quantity;

}

string ItemToPurchase::GetName()

{

return itemName;

}

double ItemToPurchase::GetPrice()

{

return itemPrice;

}

const string& ItemToPurchase::GetDescription() const

{

return itemDescription;

}

void ItemToPurchase::SetDescription(const string& itemDescription)

{

this->itemDescription = itemDescription;

}

int ItemToPurchase::GetQuantity()

{

return itemQuantity;

}

void ItemToPurchase::clean()

{

itemName = "none";

itemDescription = "none";

itemPrice = 0;

itemQuantity = 0;

}

main,cpp

#include

#include "ItemToPurchase.h"

#include "ShoppingCart.h"

using namespace std;

int main()

{

ItemToPurchase item;

string name, desc;

double price;

int q;

string custName,date;

string option = "";

cout<<"Enter Customer's Name :";

getline(cin, custName);

cout<<"Enter Today's Date : ";

getline(cin, date);

ShoppingCart sCart(name, date);

sCart.setName(custName);

sCart.setDate(date);

sCart.showOption();

while(option.compare("quit") != 0 )

{

cout<<"Enter option : "<

getline(cin, option);

if(option.compare("options") == 0)

sCart.showOption();

else if(option.compare("add") == 0)

{

cout << "Enter the item name: ";

getline(cin, name);

cout << "Enter the item description: ";

getline(cin, desc);

cout << "Enter the item price: ";

cin >> price;

cout << "Enter the item quantity: ";

cin >> q;

item.SetName(name);

item.SetDescription(desc);

item.SetPrice(price);

item.SetQuantity(q);

sCart.add(item);

item.clean();

cin.ignore();

}

else if(option.compare("remove") == 0)

{

cout << "Enter the item name: ";

getline(cin, name);

sCart.remove(name);

}

else if(option.compare("change") == 0)

{

cout << "Enter the item name: ";

getline(cin, name);

cout << "Enter the item quantity: ";

cin >> q;

item.SetName(name);

item.SetQuantity(q);

sCart.update(item);

item.clean();

cin.ignore();

}

else if(option.compare("descriptions") == 0)

sCart.showDescription();

else if(option.compare("cart") == 0)

sCart.showCart();

}

cout<<"Program..Terminated..";

return 0;

}