hopping Cart:

Users should be able to add products to a shopping cart.

Product Information:

The system should have a list of products with at least a name and price.

Products should be identifiable by a unique identifier or code.

Shopping Cart Functionality:

Users should be able to add products to their shopping cart.

Checkout Process:

Users should be able to initiate a checkout process.

The checkout process should include displaying the total price of items in the shopping cart.

User Interaction:

The system should prompt users to enter the product number to add it to the cart.

Users should be able to enter

$0$

$$to indicate they want to proceed to checkout.

Display Information:

The system should display a list of available products with their names and prices.

After adding items to the cart, the system should display the contents of the shopping cart.

The system should display the total price of items in the shopping cart.