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What is the use of inbuilt classes?

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in Object Oriented Programming by (128k points)
What is the use of inbuilt classes?

(a) Provide predefined data

(b) Provide predefined functions

(c) Provide predefined data and functions

(d) Provide predeclared data to be overridden

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Query is from Class Use topic in division Classes of Object Oriented Programming

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Best answer
Right choice is (c) Provide predefined data and functions

Best explanation: The data that is constant or is always the same initially for use can be provided by some inbuilt classes. The functions that are mostly used are also provided by the inbuilt classes. The data and functions can be used by including the corresponding header file or library.

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