Usage (Client Code): ● In the Main method, a NewsPublisher is created, along with two subscribers: Alice?

Short answer: And Bob. The subscribers are subscribed to the publisher. When the publisher sends out a notification (Notify()), all subscribers are automatically notified and updated with the latest news. class Program { static void Main() { var publisher = new NewsPublisher(); var subscriber1 = new NewsSubscriber("Alice"); var subscriber2 = new… nd Bob. The subscribers…… are subscribed to the publisher. When the publisher sends…

Explain a bit more

out a notification (Notify()), all subscribers are automatically notified and updated with the latest news. class Program { static void Main() { var publisher = new NewsPublisher(); var subscriber1 = new NewsSubscriber("Alice"); var subscriber2 = new NewsSubscriber("Bob"); publisher.Subscribe(subscriber1); publisher.Subscribe(subscriber2); publisher.Notify("Breaking News: Observer Pattern in C#!"); } } Output: lice received news: Breaking News: Observer Pattern in C#! Bob received news: Breaking News: Observer Pattern in C#! How It Works: And Bob. The subscribers are subscribed to the publisher. When the publisher sends out a…

Real-world example (ShopNest)

When order status changes, observers update email, SMS, and analytics without the Order class knowing each one.

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.