12.5.4. Error Handling

Try these first

1. 1.

   What is error detection?

   Hint

   Think about how a program knows there was a problem.

2. 2.

   Name one way to report an error.

   Hint

   How do we tell someone something went wrong?

3. 3.

   What is the first step in error handling?

   • Error Recognition
   • Error Recovery
   • Error Reporting

   Hint

   Think about how you would first notice something went wrong.

4. 4.

   True or False: Logging is unnecessary for error management.

   • True
   • False

   Hint

   Why do we need to remember past issues?

5. 5.

   Design an error handling mechanism for a temperature sensor reading application that can detect, report, and recover from erroneous readings. Outline the implementation steps.

   Hint

   Think about how your application will know if something is wrong before responding.

6. 6.

   Write pseudo-code for a function that handles errors from a UART communication process, indicating possible errors via return codes, logging them and implementing a retry strategy.

   Hint

   Start with checking the result of the data read operation clearly.