Program: Online shopping cart $($Part $2)5$ files $($main$.$c$,$ ShoppingCart.c$,$ ShoppingCart.h$,$ ItemToPurchase.c$,$ ItemtoPurchase.h$)$

This program extends the earlier "Online shopping cart $($Part $1)"$ program. $($Consider first saving your earlier program$).$

Step $1$: Extend the ItemToPurchase struct to contain a new data member. $(2$ pts$)$

char itemDescription$[]-$ set to "none" in MakeItemBlank$()$

Implement the following related functions for the ItemToPurchase struct.

PrintItemDescription$()$

Has an ItemToPurchase parameter.

Ex$.$ of PrintItemDescription$()$ output:

Bottled Water: Deer Park, $12$ oz$.$

Step $2$: Build three new files:

ShoppingCart.h $-$ struct definition and related function declarations

ShoppingCart.c $-$ related function definitions

main.c $-$ main$()$ function $($Note: main$()\text{'}$s functionality differs from the previous program.$)$

Build the ShoppingCart struct with the following data members and related functions.

Data members $(3$ pts$)$

char customerName$[]$

char currentDate$[]$

ItemToPurchase cartItems$[]-$ has a maximum of $10$ slots $($can hold up to $10$ items of any quantity$)$

int cartSize $-$ the number of filled slots in array cartItems$[]($number of items in cart of any quantity$)$

Related functions

AddItem$()$

Adds an item to cartItems array. Has parameters of type ItemToPurchase and ShoppingCart. Returns ShoppingCart object.

RemoveItem$()$

Removes item from cartItems array $($does not just set quantity to $0$; removed item will not take up a slot in array$).$ Has a char$[]($an item's name$)$ and a ShoppingCart parameter. Returns ShoppingCart object.

If item name cannot be found, output a message: Item not found in cart. Nothing removed.

ModifyItem$()$

Modifies an item's description, price, and$/$or quantity. Has parameters of type ItemToPurchase and ShoppingCart. Returns ShoppingCart object.

GetNumItemsInCart$()(2$ pts$)$

Returns quantity of all items in cart. Has a ShoppingCart parameter.

GetCostOfCart$()(2$ pts$)$

Determines and returns the total cost of items in cart. Has a ShoppingCart parameter.

PrintTotal$()$

Outputs total of objects in cart. Has a ShoppingCart parameter.

If cart is empty, output a message: SHOPPING CART IS EMPTY

PrintDescriptions$()$

Outputs each item's description. Has a ShoppingCart parameter.

If cart is empty, output a message: SHOPPING CART IS EMPTY

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

Step $3$: 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 $1,2016$

Step $4$: Implement the following menu functions in main.c

PrintMenu$()$

Prints the following menu of options to manipulate the shopping cart. $(1$ pt$)$

MENU

a $-$ Add item to cart

r $-$ Remove item from cart

c $-$ Change item quantity

i $-$ Output items' descriptions

o $-$ Output shopping cart

q $-$ Quit

ExecuteMenu$()$

Takes $2$ parameters: a character representing the user's choice and a shopping cart. Performs the menu options described below in step $5,$ according to the user's choice, and returns the shopping cart. $(1$ pt$)$ Step $5$: Implement the menu options

Step $5$a: In main$(),$ call PrintMenu$()$ and prompt for the user's choice of menu options. Each option is represented by a single character.

If an invalid character is entered, continue to prompt for a valid choice. When a valid option is entered, execute the option by calling ExecuteMenu$().$ Then, print the menu and prompt for a new option. Continue until the user enters $\text{'}$q$\text{'}.(1$ pt$)$

Hint: Implement Quit before implementing other options. Ex$.$ of PrintTotal$()$ output:

Step $3$: 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:

Step $4$: Implement the following menu functions in main.c

PrintMenu$()$

Prints the following menu of options to manipulate the shopping cart. $(1$ pt$)$

MENU

a $-$ Add item to cart

r $-$ Remove item from cart

c $-$ Change item quantity

i $-$ Output items' descriptions

o $-$ Output shopping cart

q $-$ Quit

ExecuteMenu$()$

Takes $2$ parameters: a character representing the user's choice and a shopping cart. Performs the menu options described

below in step $5,$ according to the user's choice, and returns the shopping cart. $(1$ pt$)$