Question

IN C++

7.22 LAB*: Program: Online shopping cart (Part 2)

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.

Code:

#include <iostream>

#include <string>

#include "ItemToPurchase.h"

using namespace std;

//main

int main()

{

//Declare two objects

ItemToPurchase p1,p2;

string myName;

int myPrice,myQuant;

//Get item1 details

cout<<"Item 1"<<endl;

cout<<"Enter the item name:";

getline(cin,myName);

cout<<"Enter the item price:";

cin>>myPrice;

cout<<"Enter the item quantity:";

cin>>myQuant;

p1.SetName(myName);

p1.SetPrice(myPrice);

p1.SetQuantity(myQuant);

cin.ignore();

//Get item2 details

cout<<"\nItem 2"<<endl;

cout<<"Enter the item name:";

getline(cin,myName);

cout<<"Enter the item price:";

cin>>myPrice;

cout<<"Enter the item quantity:";

cin>>myQuant;

p2.SetName(myName);

p2.SetPrice(myPrice);

p2.SetQuantity(myQuant);

//print total cost

cout<<"\nTOTAL COST"<<endl;

cout<<p1.GetName()<<" "<<p1.GetQuantity()<<" @ $"<<p1.GetPrice()<<" = $"<<p1.GetQuantity()*p1.GetPrice()<<endl;

cout<<p2.GetName()<<" "<<p2.GetQuantity()<<" @ $"<<p2.GetPrice()<<" = $"<<p2.GetQuantity()*p2.GetPrice()<<endl;

cout<<"\nTotal: $"<<p1.GetQuantity()*p1.GetPrice()+p2.GetQuantity()*p2.GetPrice()<<endl;

system("pause");

return 0;

}

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
=================================

====== ItemToPurchase.h ======

#ifndef ITEMTOPURCHASE
#define ITEMTOPURCHASE
#include <iostream>
#include <string>
using namespace std;
class ItemToPurchase
{
public:
// Zero argumented constructor
ItemToPurchase();
// Parameterized constructor
ItemToPurchase(string, string, int, int);
// getters and setters
void SetName(string);
void SetPrice(int);
void SetQuantity(int);
void SetDescription(string);
void PrintItemCost();
void PrintItemDescription();
string GetName() const;
int GetPrice() const;
int GetQuantity() const;
string GetDescription() const;

private:
string itemName;
int itemPrice;
int itemQuantity;
string itemDescription;
};
#endif

=====================================

=====================================

#include <iostream>
#include <string>
#include "ItemToPurchase.h"
using namespace std;

ItemToPurchase::ItemToPurchase(string name, string description, int price, int quantity)
{
itemName = name;
itemPrice = price;
itemQuantity = quantity;
itemDescription = description;
}
ItemToPurchase::ItemToPurchase()
{
itemName = "";
itemPrice = 0;
itemQuantity = 0;
itemDescription = "";
}
void ItemToPurchase::SetName(string itemNam)
{
itemName = itemNam;
}
void ItemToPurchase::SetPrice(int itemPric)
{
itemPrice = itemPric;
}
void ItemToPurchase::SetQuantity(int itemQuantit)
{
itemQuantity = itemQuantit;
}
void ItemToPurchase::SetDescription(string itemDescriptio)
{
itemDescription = itemDescriptio;
}
string ItemToPurchase::GetName() const
{
return itemName;
}
int ItemToPurchase::GetPrice() const
{
return itemPrice;
}
int ItemToPurchase::GetQuantity() const
{
return itemQuantity;
}
string ItemToPurchase::GetDescription() const
{
return itemDescription;
}
void ItemToPurchase::PrintItemCost()
{
cout << itemName << " " << itemQuantity << " @ $" << itemPrice << " = $";
cout << itemQuantity * itemPrice << endl;
return;
}
void ItemToPurchase::PrintItemDescription()
{
cout << itemName << ": " << itemDescription << endl;
return;
}

=====================================

====== ShoppingCart.h ======

#ifndef SHOPPINGCART
#define SHOPPINGCART
#include <string>
#include <vector>
#include "ItemToPurchase.h"
using namespace std;
class ShoppingCart
{
public:
// Parameterized constructor
ShoppingCart(string cName = "none", string cDate = "none");
// getters
string GetCustomerName();
string GetDate();
void AddItem(ItemToPurchase);
void RemoveItem(string itemNames);
void ModifyItem(string name);
int GetNumItemsInCart();
int GetCostOfCart();
void PrintTotal();
void PrintDescriptions();

private:
string customerName;
string currentDate;
vector<ItemToPurchase> cartItems;
};

#endif

=====================================

=== ShoppingCart.cpp ====

#include <iostream>
#include <string>
#include "ShoppingCart.h"
using namespace std;
unsigned int i;
// parametrized constructor
ShoppingCart::ShoppingCart(string cName, string cDate)
{
this->currentDate = "January 1, 2016";
this->currentDate = cDate;
this->customerName = "none";
this->customerName = cName;
}
// function to get name
string ShoppingCart::GetCustomerName()
{
return customerName;
}
// function to get date
string ShoppingCart::GetDate()
{
return currentDate;
}
// This function will add item to the vector
void ShoppingCart::AddItem(ItemToPurchase item)
{
cartItems.push_back(item);
}
// This function will remove item from the vector
void ShoppingCart::RemoveItem(string name)
{
int indx = -1;

for (unsigned int i = 0; i < cartItems.size(); i++)
{
if (cartItems[i].GetName().compare(name) == 0)
{
indx = i;
break;
}
}

if (indx != -1)
{
cartItems.erase(cartItems.begin() + indx);

cout << "** Item Successfully Removed **" << endl;
}
else if (indx == -1)
{
cout << "** Item Not Found **" << endl;
}
}
// This function will modify an item in the vector based on the name
void ShoppingCart::ModifyItem(string name)
{
int qty;
int indx = -1;

for (unsigned int i = 0; i < cartItems.size(); i++)
{
if (cartItems[i].GetName().compare(name) == 0)
{
indx = i;
break;
}
}

if (indx != -1)
{
cout << "Enter New Quantity :";
cin >> qty;
cartItems[indx].SetQuantity(qty);

cout << "** Item Successfully Modified **" << endl;
}
else if (indx == -1)
{
cout << "** Item Not Found **" << endl;
}
}
// This function will get total number of items
int ShoppingCart::GetNumItemsInCart()
{
int totItems = 0;
for (i = 0; i < cartItems.size(); i++)
{
totItems = totItems + cartItems.at(i).GetQuantity();
}
return totItems;
}
// function to get cost
int ShoppingCart::GetCostOfCart()
{
int total = 0;
for (i = 0; i < cartItems.size(); i++)
{
total = total + (cartItems.at(i).GetPrice() * cartItems.at(i).GetQuantity());
}
return total;
}
// function to print total
void ShoppingCart::PrintTotal()
{
int total = 0;
cout << customerName << "'s Shopping Cart - " << currentDate << endl;
if (cartItems.size() == 0)
{
cout << "Number of Items: 0" << endl << endl;
cout << "SHOPPING CART IS EMPTY" << endl << endl;
cout << "Total: $0" << endl << endl;
}
else
{
cout << "Number of Items: " << GetNumItemsInCart() << endl << endl;
for (i = 0; i < this->cartItems.size(); i++)
{
this->cartItems.at(i).PrintItemCost();
total
= total + (this->cartItems.at(i).GetPrice() * this->cartItems.at(i).GetQuantity());
}
cout << endl << "Total: $" << total << endl << endl;
}
}

// This function will display the items description in the vector
void ShoppingCart::PrintDescriptions()
{
cout << customerName << "'s Shopping Cart - " << currentDate << endl;
cout << "Item Descriptions" << endl;
for (i = 0; i < cartItems.size(); i++)
{
cartItems.at(i).PrintItemDescription();
}
}

=====================================

======= main.cpp =======

#include <iostream>
#include <string>
#include "ShoppingCart.h"
using namespace std;

// Function declarations
ItemToPurchase AddItem();
char PrintMenu();

int main()
{
// Declaring variables
string itemToRemove;
string customerName;
string currentDate;
  
//Getting the input entered by the user
cout << "Enter customer's name:" << endl;
getline(cin, customerName);
cout << "Enter today's date:" << endl;
getline(cin, currentDate);
cout << "Customer name: " << customerName << endl;
cout << "Today's date: " << currentDate << endl << endl;
  
// Creating an instance of Shopping Cart
ShoppingCart itemCart(customerName, currentDate);
  
//calling the function
char answer = PrintMenu();
  
/* This while loop continues to execute
* until the user enters either 'q'
*/
while (answer != 'q')
{
  
if (answer == 'o' || answer == 'O')
{
cout << "OUTPUT SHOPPING CART" << endl;
itemCart.PrintTotal();
}
if (answer == 'a' || answer == 'A')
{
itemCart.AddItem(AddItem());
}
if (answer == 'i' || answer == 'I')
{
cout << "OUTPUT ITEMS' DESCRIPTIONS" << endl;
itemCart.PrintDescriptions();
}
if (answer == 'd' || answer == 'D')
{
cout << "REMOVE ITEM FROM CART" << endl << "Enter name of item to remove:" << endl;
cin.ignore();
getline(cin, itemToRemove);
itemCart.RemoveItem(itemToRemove);
}
if (answer == 'c' || answer == 'C')
{

cin.ignore();
string itemName;
cout << "Enter the Item name :";
getline(cin, itemName);
itemCart.ModifyItem(itemName);
}
if (answer == 'q' || answer == 'Q')
{
break;
}
answer = PrintMenu();
}
}

// This function will display the menu
char PrintMenu()
{
char answer;
cout << "MENU" << endl;
cout << "a - Add item to cart" << endl;
cout << "d - Remove item from cart" << endl;
cout << "c - Change item quantity" << endl;
cout << "i - Output items' descriptions" << endl;
cout << "o - Output shopping cart" << endl;
cout << "q - Quit" << endl << endl;
while (true)
{
cout << "Choose an option:" << endl;
cin >> answer;
if (answer == 'a' || answer == 'A')
break;
if (answer == 'd' || answer == 'D')
break;
if (answer == 'c' || answer == 'C')
break;
if (answer == 'i' || answer == 'I')
break;
if (answer == 'o' || answer == 'O')
break;
if (answer == 'q' || answer == 'Q')
break;
}
return answer;
}
ItemToPurchase AddItem()
{
string itemName = "";
string itemDescription;
int itemQuantity;
int itemPrice;
cout << "ADD ITEM TO CART" << endl;
cout << "Enter the item name:" << endl;
cin.ignore();
getline(cin, itemName);
cout << "Enter the item description:" << endl;
getline(cin, itemDescription);
cout << "Enter the item price:" << endl;
cin >> itemPrice;
cout << "Enter the item quantity:" << endl;
cin >> itemQuantity;
ItemToPurchase itemToAdd(itemName, itemDescription, itemPrice, itemQuantity);
return itemToAdd;
}

=====================================

=====================================

Output:

Output:

=====================.Thank You