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What are inbuilt classes?

(a) The predefined classes in a language

(b) The classes that are defined by the user

(c) The classes which are meant to be modified by the user

(d) The classes which can’t be used by the user

I have been asked this question in a job interview.

The question is from Inbuilt Classes in portion Inbuilt Classes of Object Oriented Programming

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Correct choice is (a) The predefined classes in a language

To explain I would say: The classes that are already provided in a programming language for use are inbuilt classes. These classes provide some functions or objects that can be used by the programmer for easier code.

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