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)

Performing dynamic memory allocation

In this recipe, we will learn how to dynamically allocate some memory. We will also learn how to increase the number of memory blocks, how to decrease the number of allocated memory blocks, and how to free up memory. 

How to do it...

We will ask the user how many memory blocks need to be allocated, and we will dynamically allocate that number of memory blocks. The user will then be asked to assign integer values to those memory blocks. After that, the user will be asked how many more additional blocks need to be allocated. Similarly, the user will be asked how many memory blocks need to be reduced too. The following are the steps to be performed in order to dynamically allocate...