PROGRAMMING PROJECT #1: BUY ITEMS

Objectives:

Use basic C++ constructs: if, switch, and repetition (looping)

Perform simple data type manipulations

Solve problem, design solution and implement using C++

Description:

Write a menu-driven program named BuyItems.cpp that provides the following options:

Buy items by asking for the items description, price per item and the quantity

Show receipts by listing all the purchases

Show summary by listing only the number of purchases and the total purchase cost

Requirements:

The program must produce the provided expected sample output.

The user must enter the correct access code which is one of the followings (12345 or 54321) in order to start the program.

There is no array, just simply use string and string concatenation to keep track of the purchase history.

The program should NOT have any global variables

The program should have at least 3 functions and some documentation including your name and programs description

Required error handling:

The program MUST perform the following checks:

Case-insensitive when to ask the user to confirm exiting the program (e.g. accepting both Y and y)

Check for bad access code and allow up to 3 trials.

Check for negative or invalid price and/or quantity

Check for invalid menu answer

Sample program run 1

D:\>BuyItems

Welcome to my shopping program.

Please enter the access code: 12345

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: -1

Invalid selection. Please try it again.

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 5

Invalid selection. Please try it again.

Shopping Menu:

1. buy

2. show receipt

3. show summary

4. exit the program

Enter your option: Hello

Invalid selection. Please try it again.

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 1

Please enter the description: Book

Please enter the quantity: 10

Please enter the price for each item: 5

ITEM(Book) QUANTITY(10) PRICE($5.00) COST($50.00)

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 1

Please enter the description: CD

Please enter the quantity: 2

Please enter the price for each item: 20

ITEM(CD) QUANTITY(2) PRICE($20.00) COST($40.00)

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 1

Please enter the description: Movie

Please enter the quantity: 4

Please enter the price for each item: 8

ITEM(Movie) QUANTITY(4) PRICE($8.00) COST($32.00)

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 2

List of all purchases:

ITEM(Book) QUANTITY(10) PRICE($5.00) COST($50.00)

ITEM(CD) QUANTITY(2) PRICE($20.00) COST($40.00)

ITEM(Movie) QUANTITY(4) PRICE($8.00) COST($32.00)

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 3

PURCHASES(3) TOTAL_COST($122.00)

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 4

Are you sure that you want to exit the program (y/n)? y

Thank you for using our program.

Thank you for using my program.

D:\>

Sample program run 2 invalid price and quantity input

D:\>BuyItems

Welcome to my shopping program.

Please enter the access code: 54321

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 1

Please enter the description: Book

Please enter the quantity: -1

Invalid quantity. Quantity cannot be negative or string. Please try it again.

Please enter the quantity: -10

Invalid quantity. Quantity cannot be negative or string. Please try it again.

Please enter the quantity: Hello

Invalid quantity. Quantity cannot be negative or string. Please try it again.

Please enter the quantity: 10

Please enter the price for each item: -1

Invalid price. Price cannot be negative or string. Please try it again.

Please enter the price for each item: -10

Invalid price. Price cannot be negative or string. Please try it again.

Please enter the price for each item: Hello

Invalid price. Price cannot be negative or string. Please try it again.

Please enter the price for each item: 5

ITEM(Book) QUANTITY(10) PRICE($5.00) COST($50.00)

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 2

List of all purchases:

ITEM(Book) QUANTITY(10) PRICE($5.00) COST($50.00)

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 3

PURCHASES(1) TOTAL_COST($50.00)

Shopping Menu:

1. buy

2. show receipts

3. show summary

4. exit the program

Enter your option: 4

Are you sure that you want to exit the program (y/n)? y

Thank you for using our program.

Thank you for using my program.

D:>

Sample program run 3 invalid access code

D:\>BuyItems

Welcome to my shopping program.

Please enter the access code: 123

Invalid access code. Please try it again.

Please enter the access code: hello

Invalid access code. Please try it again.

Please enter the access code: 12345

Shopping Menu:

1. buy

2. show receipt

3. show summary

4. exit the program

Enter your option: 2

There is no purchase available.

Shopping Menu:

1. buy

2. show receipt

3. show summary

4. exit the program

Enter your option: 3

PURCHASES( 0 ) TOTAL_COST($0)

Shopping Menu:

1. buy

2. show receipt

3. show summary

4. exit the program

Enter your option: 4

Are you sure that you want to exit the program (y/n)? n

Shopping Menu:

1. buy

2. show receipt

3. show summary

4. exit the program

Enter your option: 4

Are you sure that you want to exit the program (y/n)? y

Thank you for using our program.

Thank you for using my program.

D:\>