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In this guide we will walk through the fundamentals of C with simple explanations and examples for each concept. By the end of this guide, you’ll have a better understanding of how to write basic C programs and use common data types, variables, and control structures. Code examples will be provided along the way and you can try it using online C compilers: Programiz — C Programming Online Compiler One Compiler — Online C Compiler Tutorialspoint — Online C Compiler W3Schools — Online C Compiler 1. Getting Started with C Programming What is C? C is a general-purpose programming language that’s widely used in system and embedded programming. It’s a great starting point because it helps you understand core computing concepts like memory management. 2. Basic Structure of a C Program Let’s start with the basic structure of a C program: # include <stdio.h> int main () { printf ( "Hello, World!\n" ); // Prints a message to the console return 0 ; } Explanation: #inc...

Behavioral Design Patterns  in Object-Oriented Programming (OOP) are concerned with how objects interact and communicate with each other. They define the flow of control and responsibility among different objects in a flexible way. By using these patterns, you can enhance the way your software components collaborate. In this guide, we will explore the following behavioral design patterns: Chain of Responsibility Command Interpreter Iterator Mediator Memento Observer State Strategy Template Method Visitor Each pattern is explained with a Kotlin example that can be tested using the  Kotlin Playground . Chain of Responsibility Pattern The  Chain of Responsibility pattern  allows multiple objects to handle a request, passing the request along a chain until one of the objects handles it. Example abstract class Handler { var next: Handler? = null fun setNext (handler: Handler ) : Handler { this .next = handler return handler } abstract...