What is OOP in simple words?

Object-oriented programming (OOP) is a style of programming characterized by the identification of classes of objects closely linked with the methods (functions) with which they are associated . It also includes ideas of inheritance of attributes and methods.

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What is base class method?

base (C# Reference) The base keyword is used to access members of the base class from within a derived class : Call a method on the base class that has been overridden by another method. Specify which base-class constructor should be called when creating instances of the derived class.

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