Question

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.

(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.... there has been a few responses to this and all of them are incomplete, that is the challenging part.

the Code is Below: I am trying to compile the code in Ms Visual Studio.  

thanks in advance.

ShoppingCart.h (header file)
#ifndef SHOPPINGCART_H_

#define SHOPPINGCART_H_

#include <string>

#include <vector>

#include "ItemToPurchase.h"

using namespace std;

class ShoppingCart

{

private:

string name;

string date;

vector <ItemToPurchase> 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 <iostream>

#include<string>

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<ItemToPurchase>::iterator it;

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

for(int i=0;i<item.size();i++)

{

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

{

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

set = 1;

break;

}

}

if(set == 0)

item.push_back(newItem);

}

}

void ShoppingCart::remove(string itemName)

{

//vector<ItemToPurchase>::iterator it;

int i=0;

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

for(int j=0;j<item.size();i++)

{

i++;

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

{

cout<<"found...removing "<<getName()<<endl;

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

break;

}

}

if(i == 0)

{

cout<<"Shopping cart is empty."<<endl;

cout<<"No item found with name "<<itemName<<endl;

}

}

void ShoppingCart::update(ItemToPurchase &updateItem)

{

///vector<ItemToPurchase>::iterator it;

int i=0;

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

for(int j=0;j<item.size();i++)

{

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."<<endl;

cout<<"No itemfound with name "<<updateItem.GetName()<<endl;

}

}

ShoppingCart::~ShoppingCart()

{

}

void ShoppingCart::showDescription()

{

vector<ItemToPurchase>::iterator it;

int i=0;

cout<<""<<name<<"'s Shopping Cart - "<<date<<endl;

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

for(int j=0;j<item.size();i++)

{

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

i++;

}

if(i == 0)

cout<<"Shopping cart is empty."<<endl;

}

void ShoppingCart::showCart()

{

//vector<ItemToPurchase>::iterator it;

int i = 0;

double tot = 0;

cout<<""<<name<<"'s Shopping Cart - "<<date<<endl;

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

for(int j=0;j<item.size();i++)

{

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."<<endl;

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

}

}

void ShoppingCart::showOption()

{

cout<<"\t\tMenu"<<endl;

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

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

cout<<"change - Change item quantity"<<endl;

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

cout<<"cart - Output shopping cart"<<endl;

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

cout<<"quit - Quit"<<endl;

}

itemToPurchase.h

#ifndef ItemToPurchase_H_

#define ItemToPurchase_H_

#include <string>

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 <iostream>

#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 : "<<endl;

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;

}

Answer 1

ANSWER :

void TotalCost(vector<ItemToPurchase> purchaseList, int size)

{

    int i;

    int total = 0, temp;

    cout << "TOTAL COST";

//Iterating over items

    for(i=0; i<size; i++)

    {

//Calculating total cost

        temp = ((purchaseList.at(i)).GetPrice()) * ((purchaseList.at(i)).GetQuantity());

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

        total += temp;

    }

//Printing total cost

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

    return;

}

//Main

int main()

{

    int size;

    size = 2;

//Vector to hold items

    vector<ItemToPurchase> purchaseList;

//Reading values

    CreatePurchaseList(purchaseList, size);

//Printing total cost

    TotalCost(purchaseList, size);

    return 0;

}

------My ItemToPurchase.cpp

#include <iostream>

#include <string>

#include "ItemToPurchase.h"

using namespace std;

ItemToPurchase::ItemToPurchase() //default constructor

{

    itemName = "none"; //default name

    itemPrice = 0; //default price

    itemQuantity = 0; //default qty

}

//Assigning name

void ItemToPurchase::SetName(string resitemName)

{

    itemName = resitemName;

}

//Returning name

string ItemToPurchase::GetName()

{

    return itemName;

}

//Assigning price

void ItemToPurchase::SetPrice(int resitemPrice)

{

    itemPrice = resitemPrice;

}

//Returning price

int ItemToPurchase::GetPrice()

{

    return itemPrice;

}

//Assigning Quantity

void ItemToPurchase::SetQuantity(int resitemQuantity)

{

    itemQuantity = resitemQuantity;

}

//Returning quantity

int ItemToPurchase::GetQuantity()

{

    return itemQuantity;

}