What is inheritance in OOP C++?

Inheritance is one of the key features of Object-oriented programming in C++. It allows us to create a new class (derived class) from an existing class (base class) . The derived class inherits the features from the base class and can have additional features of its own.

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What is annotation used for?

Annotations have a number of uses, among them: Information for the compiler — Annotations can be used by the compiler to detect errors or suppress warnings. Compile-time and deployment-time processing — Software tools can process annotation information to generate code, XML files, and so forth.

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