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)

Taking input from the serial port using Arduino

In this recipe, we will be attaching an LED to the Arduino board and will prompt the user to press either 0 or 1. The user can input a value using the serial port. If the value entered by the user is 0, it will switch off the LED and if the value entered by the user is 1, it will make the LED glow.

How to do it…

To take input from the serial port using Arduino, perform the following steps:

  1. Invoke the Arduino IDE. Arduino opens up with a file showing its 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 your PC.
  2. From the Tools menu, select Port...