Write a critical reflection for this program Vending Machine Features:

• A menu of drinks and snacks presented via the console. The number and range of items is up to you.
• A set of codes that the user can input to select a particular drink or snack.
• A way of capturing the users inputted code.
• A way of managing money. The user should be able to input any amount of money and have the correct change returned.
• A message that tells the user that a particular drink or snack has been dispensed.
• A message that tells the user how much change they have received.
• Comments in the code to explain key operations.
• A method of categorising items in the vending machine to improve the user experience (e.g. Chocolate or Hot Drinks).
• A way of allowing users to buy additional items if they have enough credit.
• An intelligence system for suggesting purchases. For example, if you buy a coffee, the vending machine may suggest that you buy biscuits.
• The use of functions to improve the structure of your program.
• A stock system meaning the machine may run out of products