What are instance vs static members in a class?

Short answer: Instance members → Belong to each object, require object to access. Static members → Belong to the class itself, shared by all objects. public class Car

Example code

{
public string Model; // Instance
public static int Count; // Static
}

Real-world example (ShopNest)

Think of ShopNest’s Product, Cart, and Order classes: each object holds data + behavior, so pricing rules stay next to the data they use.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.