10.21 LAB*: Program: Online shopping cart (Part 2) This program extends the earlier "Online shopping cart" program. (Con

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10.21 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 to contain a new attribute.
(2 pts)
Implement the following method for the ItemToPurchase class.
Ex. of print_item_description() output:
(2) Build the ShoppingCart class with the following data
attributes and related methods. Note: Some can be method stubs
(empty methods) initially, to be completed in later steps.
Ex. of print_total() output:
Ex. of print_descriptions() output:
(3) In the main section of the code, 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:
(4) Implement the print_menu() function to print the following menu
of options to manipulate the shopping cart. (1 pt)

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(5) Implement the execute_menu() function that takes 2 parameters:
a character representing the user's choice and a shopping cart.
execute_menu() performs the menu options described below, according
to the user's choice. (1 pt)
(6) In the main section of the code, call print_menu() 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 execute_menu(). Then, print the menu and prompt for a new
option. Continue until the user enters 'q'. Hint:
Implement Quit before implementing other options. (1
pt)

Ex:
(7) Implement Output shopping cart menu option in execute_menu().
(3 pts)

Ex:
(8) Implement Output item's description menu option in
execute_menu(). (2 pts)

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(9) Implement Add item to cart menu option in execute_menu(). (3
pts)

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(10) Implement remove item menu option in execute_menu(). (4
pts)

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(11) Implement Change item quantity menu option in
execute_menu(). Hint: Make new ItemToPurchase object
before using ModifyItem() method. (5 pts)

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