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)

Catching errors early with compile-time assertions

In this recipe, we will make use of assertions to detect errors at the time of compilation. Essentially, we will create a structure and will make a compile-time assertion that ensures the size of the structure is of some specific bytes. The program will abort if the size of the structure is not equal to the specified value. This constraint will help in determining the capacity of storage and also in the easy maintenance of records, that is, for deletes and updates.

How to do it...

Follow these steps to create a compile-time assert expression that ensures that the user-defined structure is a specified number of bytes:

  1. Define a structure with a few members:
struct customers...