Final Project 1 (C Programming)

Warm up: Online shopping cart (C)

(1) Create three files to submit:

• ItemToPurchase.h - Struct definition and related function declarations
• ItemToPurchase.c - Related function definitions
• main.c - main() function

Build the ItemToPurchase struct with the following specifications:

• Data members (3 pts)
• char itemName [ ]
• int itemPrice
• int itemQuantity
• Related functions
• MakeItemBlank() (2 pts)
  • Has a pointer to an ItemToPurchase parameter.
  • Sets item's name = "none", item's price = 0, item's quantity = 0
• PrintItemCost()
  • Has an ItemToPurchase parameter.

Ex. of PrintItemCost() output:

Bottled Water 10 @ $1 = $10

(2) In main(), prompt the user for two items and create two objects of the ItemToPurchase struct. Before prompting for the second item, enter the following code to allow the user to input a new string. c is declared as a char. (2 pts)

c = getchar();

while(c != ' ' && c != EOF) {

c = getchar();

}

Ex:

Item 1

Enter the item name:

Chocolate Chips

Enter the item price:

3

Enter the item quantity:

1

Item 2

Enter the item name:

Bottled Water

Enter the item price:

1

Enter the item quantity:

10

(3) Add the costs of the two items together and output the total cost. (2 pts) Ex:

TOTAL COST

Chocolate Chips 1 @ $3 = $3

Bottled Water 10 @ $1 = $10

Total: $13

Project Problem:

Program: Online shopping cart (continued) (C)

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

(1) Extend the ItemToPurchase struct to contain a new data member.

• 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.

(2) Create three new files:

• ShoppingCart.h - struct definition and related function declarations
• ShoppingCart.c - related function definitions
• main.c - main() function (Note: main()'s functionality differs from the warm up)

Build the ShoppingCart struct with the following data members and related functions. Note: Some can be function stubs (empty functions) initially, to be completed in later steps.

• Data members
• 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 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 this message: Item not found in cart. Nothing removed.
• ModifyItem()
  • Modifies an item's description, price, and/or quantity. Has parameters ItemToPurchase and ShoppingCart. Returns ShoppingCart object.
• GetNumItemsInCart()
  • Returns quantity of all items in cart. Has a ShoppingCart parameter.
• GetCostOfCart()
  • 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 this message: SHOPPING CART IS EMPTY
• PrintDescriptions()
  • Outputs each item's description. Has a ShoppingCart parameter.

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 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. 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. Ex:

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

Choose an option:

(5) Implement the "Output shopping cart" menu option. 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 Headphones 1 @ $128 = $128

Total: $521

(6) Implement the "Output item's description" menu option. 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 Headphones: Bluetooth headphones

(7) Implement "Add item to cart" menu option. 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 the "Remove item from cart" menu option. 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 before using ModifyItem() function. Ex:

CHANGE ITEM QUANTITY

Enter the item name:

Nike Romaleos

Enter the new quantity:

3