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)

Communicating between processes using a UDP socket

In this recipe, we will learn how two-way communication is implemented between a client and a server using a UDP socket. This recipe is divided into the following parts:

  • Awaiting a message from the client and sending a reply using a UDP socket
  • Sending a message to the server and receiving the reply from the server using the UDP socket

Before we begin with these recipes, let's quickly review the functions, structures, and terms that are used in successful interprocess communication using a UDP socket.

Using a UDP socket for server-client communication

In the case of communication with UDP, the client does not establish a connection with the server but simply sends...