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Author: Afzal Badshah, PhD

Virtualization in Cloud Computing

Virtualization in Cloud Computing

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Imagine you have a powerful personal computer at home. You are a single person, and you can utilize it up to a maximum of 30%, while the remaining 70% of the resources are wasted. How can you make full use of your computer’s potential? Introduction to Virtualization Virtualization is a technology that allows multiple virtual environments to run on a single physical hardware system. It works by abstracting hardware resources such as CPU, memory, and storage, creating virtual versions of…

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Introduction to Cloud Computing

Introduction to Cloud Computing

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Cloud computing is a technology paradigm that enables users to access computing resources—such as servers, storage, databases, networking, software, and more, over the internet instead of maintaining physical hardware. These resources are on-demand, scalable, and cost-effective, making cloud computing a vital component of modern IT infrastructure. The full tutorial can be accessed here. Key Characteristics of Cloud Computing On-Demand Self-Service Cloud computing allows users to provision computing resources automatically without requiring human intervention. This feature enables users to scale resources…

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Constructors and Destructors in C++

Constructors and Destructors in C++

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C++ gives every object a clear life story: it’s created, used, and then destroyed. To make this safe and predictable, the language runs a special function at birth (to initialize the object) and another at death (to clean up resources). Constructors in C++ Constructors exist to prevent uninitialized state, to let callers pass meaningful values at creation time, and to centralize setup logic in one place. In practice, you’ll use two common kinds; You may define multiple constructors for the…

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Understanding Access Modifiers in C++

Understanding Access Modifiers in C++

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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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Understanding Destructors In C++ (OOP)

Understanding Destructors In C++ (OOP)

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In object-oriented programming, every object has a life cycle. It is created, it performs certain tasks, and eventually it is destroyed. While much attention is given to how objects are created using constructors, equal importance must be given to how objects are destroyed. In C++, the destruction of an object is handled by a special member function called the destructor. A destructor ensures that when an object completes its purpose, the resources associated with it are released in a controlled…

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Constructors in C++ (Object-Oriented Programming)

Constructors in C++ (Object-Oriented Programming)

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When we create an object in C++, we expect it to start in a valid and usable state. In real life, a student record is not useful unless the university has stored the student’s name and roll number. Similarly, a car in a showroom is not meaningful unless it has a model and an engine number. In programming, the mechanism that ensures this proper initial state of an object is called a constructor. A constructor guarantees that as soon as…

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Encapsulation in C++: A Beginner Guide

Encapsulation in C++: A Beginner Guide

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Encapsulation in object-oriented programming is a core principle. It helps keep data safe and programs modular. Imagine a School Management App: students can view their class (through a getter), but only the administration system can update it (using a setter). This story highlights how encapsulation mirrors real-world roles. Encapsulation ensures data safety and modular design. Imagine using a car or a smartphone: you interact with simple controls on the surface, while the complicated wiring and mechanisms are hidden inside. This…

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Classes and Objects in C++: Beginner’s Guide with Real-Life Examples

Classes and Objects in C++: Beginner’s Guide with Real-Life Examples

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Programming is about solving real-life problems. Imagine you’re designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). To represent such entities in programming, we use two powerful tools: Let’s break this down step by step. What is a Class? A class is a template or blueprint…

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Introduction to Object-Oriented Programming (OOP)

Introduction to Object-Oriented Programming (OOP)

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Object-Oriented Programming (OOP), is a way of writing programs by focusing on real-life objects. In the real world, everything we deal with is an object, such as a car, a book, or a student. Each of these objects has certain features and can perform specific actions. In OOP, we try to represent these features as attributes and the actions as functions. This programming style helps us organize our code in a way that is closer to how we understand things…

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Introduction to Object-Oriented Programming (OOP)

Introduction to Object-Oriented Programming (OOP)

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Object-Oriented Programming, or OOP, is a way of writing programs by focusing on real-life objects. In the real world, everything we deal with is an object, such as a car, a book, or a student. Each of these objects has certain features and can perform specific actions. In OOP, we try to represent these features as attributes and the actions as functions. The detailed tutorial can be visited here. This programming style helps us organize our code in a way…

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