Book Image

Practical C Programming

By : B. M. Harwani
Book Image

Practical C Programming

By: B. M. Harwani

Overview of this book

Used in everything from microcontrollers to operating systems, C is a popular programming language among developers because of its flexibility and versatility. This book helps you get hands-on with various tasks, covering the fundamental as well as complex C programming concepts that are essential for making real-life applications. You’ll start with recipes for arrays, strings, user-defined functions, and pre-processing directives. Once you’re familiar with the basic features, you’ll gradually move on to learning pointers, file handling, concurrency, networking, and inter-process communication (IPC). The book then illustrates how to carry out searching and arrange data using different sorting techniques, before demonstrating the implementation of data structures such as stacks and queues. Later, you’ll learn interesting programming features such as using graphics for drawing and animation, and the application of general-purpose utilities. Finally, the book will take you through advanced concepts such as low-level programming, embedded software, IoT, and security in coding, as well as techniques for improving code performance. By the end of this book, you'll have a clear understanding of C programming, and have the skills you need to develop robust apps.
Table of Contents (20 chapters)

Toggle voltage in output pin using Arduino (blinking LED)

In this recipe, we will learn how to make an LED that is connected to the output pins of the Arduino board blink.

How to do it…

To make an LED that is connected to the output pins of the Arduino board blink, perform the following steps:

  1. Open the Arduino IDE. Arduino opens up with a file showing the default content, as follows:
void setup() {
// put your setup code here, to run once:

void loop() {
// put your main code here, to run repeatedly:


  1. Connect the Arduino board to the PC.
  2. From the Tools menu, select Port and confirm whether it shows COM3 (Arduino/Genuino Uno) or whatever Arduino board you have attached to your PC. Additionally, confirm whether...