Interview Questions(OOP)
Contents
Object-oriented programming interview questions
Encapsulation
restricting access to some of the object's components
bundling of data with the methods
public and private data and methods.
A benefit of encapsulation is that it can reduce system complexity, and thus increases robustness, reduce risk of conflict between components.
Polymorphism
In C++, that type of polymorphism is called overloading. If a class has inherited a parent class, it can redefine a method and thus each class has a method with the same name but different functionality.
Inheritance
Inheritance is a way to reuse code of existing objects, establish a subtype from an existing object.
Allow replace the implementation of an inherited method or data.
Public Private Protected
A member (either data member or member function) declared in a private section of a class can only be accessed by member functions and friends of that class
A member (either data member or member function) declared in a protected section of a class can only be accessed by member functions and friends of that class, and by member functions and friends of derived classes
A member (either data member or member function) declared in a public section of a class can be accessed by anyone
