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What is method overriding?

Q: What is method overriding?

Short answer: A derived class provides a new implementation of a base class method marked virtual. Achieves run-time polymorphism. class Vehicle { public virtual void Start() => Console.WriteLine("Vehicle starts"); } class Car : Vehicle { public override void Start() => Console.WriteLine("Car starts"); } 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 Define — one clear sentence (the short answer above). Example — relate it to a project like ShopNest or your real work. Trade-off — when you would not use it.

Short answer: A derived class provides a new implementation of a base class method marked virtual. Achieves run-time polymorphism. class Vehicle { public virtual void Start() => Console.WriteLine("Vehicle starts"); } class Car : Vehicle { public override void Start() => Console.WriteLine("Car starts"); }

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

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

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