Object-Oriented Programming

C++ Object-Oriented Programming concepts: Classes, Objects, Inheritance, and Polymorphism

18 program solutions

Program Solutions

Class and Object Basics

Basic Class and Object Program in C++

Default Constructor

Default Constructor Program in C++

Parameterized Constructor

Parameterized Constructor Program in C++

Copy Constructor

Copy Constructor Program in C++

Destructor

Destructor Program in C++

Static Members

Static Data Members and Static Member Functions in C++

Single Inheritance

Single Inheritance Program in C++

Multiple Inheritance

Multiple Inheritance Program in C++

Multilevel Inheritance

Multilevel Inheritance Program in C++

Hierarchical Inheritance

Hierarchical Inheritance Program in C++

Hybrid Inheritance

Hybrid Inheritance Program in C++

Function Overriding

Function Overriding Program in C++

Function Overloading

Function Overloading Program in C++

Operator Overloading

Operator Overloading Program in C++

Virtual Functions

Virtual Functions and Runtime Polymorphism in C++

Abstract Class

Abstract Class and Pure Virtual Functions in C++

Friend Function

Friend Function and Friend Class in C++

This Pointer

This Pointer Program in C++

Topic Strategy: Object-Oriented Programming

This topic is best practiced through repetition with variation. Solve each program, then modify constraints and test alternate approaches so you understand why one solution performs better than another.

During interviews, explain the approach before coding: input assumptions, core logic, complexity, and edge cases. Clear reasoning often matters as much as final code correctness.

Once comfortable, time-box each question and target clean, readable code with meaningful variable names and a quick dry run explanation.