A command-line app built in Python to manage student records.
- OOP with Encapsulation (private attributes, getters)
- JSON file handling (persistent storage)
- Exception Handling (invalid input, missing file)
- Modular code structure (3 separate files)
python main.py
- Add students with name and marks
- Auto-calculates grade (A/B/C/F)
- Saves records to JSON file
- Data persists between sessions