Afzal Badshah, PhD

In Object-Oriented Programming (OOP), Composition and Aggregation describe relationships between classes, specifically how objects are associated with one another. Both are forms of the “has-a” relationship, but they differ in strength and dependency. So in this article we will see the concept of Composition and Aggregation in C++ and also check the difference between Composition and Aggregation. What is Composition? Composition represents a strong relationship between two classes. It is used when an object (child) is a part of another…

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Polymorphism is one of the most powerful and essential concepts of Object-Oriented Programming (OOP). It refers to the ability of a single function, method, or object to behave in different ways depending on the context in which it is used. The term “Polymorphism” is derived from the Greek words poly (many) and morphe (forms), meaning “many forms.” Polymorphism allows you to write flexible, reusable, and maintainable code by enabling a single function or method to process different types of objects….

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In C++, const is a keyword used to define constant variables and functions. It ensures that a variable or function does not alter its value or behavior during the program’s execution. Using const enhances the reliability of the code by preventing unintended changes. The const Data Members are used for the purpose that if we donot want to change the value of any variable and want to make it constant. Code Example: const Data Members and Functions in C++ #include…

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Introduction: Function overloading is a powerful feature in C++ that allows multiple functions with the same name to exist in the same scope, provided their parameter lists are different. This feature is a part of polymorphism in Object-Oriented Programming (OOP) and allows developers to implement functions that perform similar tasks but operate on different types or numbers of inputs. What is Function Overloading? Function overloading occurs when: Advantages of Function Overloading: Example Code: Function Overloading in C++ Below is an…

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What Are Access Modifiers? In C++, access modifiers are keywords used to define the level of access that members of a class (variables and methods) can have. They are essential for ensuring encapsulation, which is a core concept of Object-Oriented Programming (OOP). By using access modifiers, we control how the internal data of a class is accessed, modified, and protected. Access modifiers in C++ include: By controlling access, access modifiers help: Types of Access Modifiers Code Example class number {…

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In C++, a destructor is a special member function of a class that is automatically called when an object goes out of scope or is explicitly deleted. The main purpose of a destructor is to release resources allocated to an object during its lifetime. Key Characteristics of a Destructor Purpose of a Destructor Class Student Example class Student { private: string rollnum; // Private member: Roll number of the student. public: string name; // Public member: Name of the student….

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Introduction to Abstract Classes An abstract class in C++ is a class designed to be specifically used as a base class. It cannot be instantiated on its own and typically includes at least one pure virtual function. A pure virtual function is a function declared within a class that has no implementation relative to the base class and must be implemented by all derived classes. Abstract classes are crucial in object-oriented programming to enforce a contract for derived classes. Key…

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Introduction to Parameterized Functions: A parameterized function in C++ is a function that accepts one or more arguments, which are used within the function to perform a specific task. The primary advantage of parameterized functions is their flexibility. By passing different values to the parameters, the same function can be used to perform various operations, making your code reusable and more concise. Code Example: Simple Calculator Class with Parameterized Functions #include <iostream>using namespace std;class Calculator {private: int a; // Attributes…

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In C++, a class is a user-defined data type that serves as a blueprint for creating objects. Classes group data (attributes) and functions (methods) into a single unit, supporting encapsulation, one of the fundamental principles of Object-Oriented Programming (OOP). What is a Class? A class defines the properties and behaviors that its objects will have. It consists of: Key Components of a Class Example Code: Car Class Below is an example of a Car class in C++ that demonstrates its…

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