Simple Stopwatch Script Has Input Handling Bugs

[ughte]

The Simple Stopwatch script in beginner projects/Simple stopwatch/ has four critical bugs that make it unfriendly for beginner users:

Problem

1. Case Sensitivity Bug: Only accepts lowercase 'y' or 'n'. Entering 'Y' or 'N' causes the program to exit immediately with no error message.
2. Invalid Input Bug: Any input other than 'y' or 'n' causes the program to exit. No helpful error guidance.
3. Empty Input Bug: Pressing Enter without typing anything exits the program.
4. Poor User Experience: No feedback messages when the stopwatch starts/stops.

Steps to Reproduce

1. Run the stopwatch script
2. When prompted "Start stopwatch? y/n: " enter Y (uppercase)
3. Expected: Program should accept the input and start the stopwatch
4. Actual: Program exits silently with no explanation