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)

Learning how to avoid errors while formatting strings

In this recipe, we will use the snprintf function. The snprintf function will assign the formatted text to the name member but will limit the size of the string assigned to it. The difference between the sprintf and snprintf functions is that sprintf simply assigns the complete formatted text to the destination string no matter what its capacity, whereas snprintf allows us to specify the maximum length of the text that can be assigned to the destination string. Therefore, a buffer overflow will not occur as only the specified size of the text is assigned to the destination string.

How to do it...

 Here are the steps to make a program in which an error occurs...