Question

You will achieve the learning objectives mentioned above by performing the following 3 activities:

a)Protect the application from crashing when a user inputs something other than a number as an answer in the process_answer of the AppCLIEngine . (LO3)
b)Protect the application from crashing when a user incorrectly specifies an item to be added by the process_add_item of the AppCLIEngine (LO3)
c)Protect the application from crashing when a user attempts to remove an item which is not included in the existing pool of items by the process_del_item of the AppCLIEngine.(LO3)

Answer 1

To prevent an application from crashing, implement error handling and input validation in methods like process_answer, process_add_item, and process_del_item of the AppCLIEngine, complying with learning objectives about problem-solving and numerical solution assessment.

Step-by-step explanation:

To protect the application from crashing in various user input scenarios, it's essential to implement error handling in the AppCLIEngine.

This involves creating safeguards against non-numerical input in the process_answer method, ensuring that the process_add_item method handles incorrect item specifications gracefully,

and preventing crashes in the process_del_item method when a user attempts to remove an item that doesn't exist in the item pool.

Implementing these protections aligns with the learning objectives (LO3) related to developing problem-solving strategies and assessing the significance of numerical solutions to problems.

Using try-catch blocks, input validation, and conditional checks are standard practices to avoid application crashes and improve reliability and user experience.