What is the difference between struct and class?
PICTURE THIS: RAG CHATBOT
Simple meaning
The only language difference is default access: public for struct, private for class.
WHY — OOP instead of guessing?
Why interviewers care about OOP:
contrast on OOP, not two memorised paragraphs.
the developer, then one case where picking wrong hurts.
Name the idea, why it exists, then one short example.
End with when you use it and one common pitfall.
STEPS — What happens step by step?
Before you speak the answer, walk the interviewer through these steps:
- 1The only language difference
is default access: public for struct, private for class.
- 2Teams use struct for
plain data and class for invariants.
- 3I do not pretend
they differ in layout beyond that default.
- 4Give an example
One tiny concrete case you can say aloud.
- 5Common mistake
What juniors usually get wrong.
- 6Close
When you pick this over the alternative.
EXAMPLE — See it in action
Here's a short line you can speak, broken into clear beats:
Note: Adapt this scaffold to your own project — keep it under 60–90 seconds.
Key takeaway
The only language difference is default access: public for struct, private for class. Teams use struct for plain data and class for invariants.