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)

Exploring Functions

Whenever you need to create a large application, it is a wise decision to divide it into manageable chunks, called functions. Functions are small modules that represent tasks that can be executed independently. The code written inside a function can be invoked several times, which helps to avoid repetitive statements.

Functions help in the teamwork, debugging, and scaling of any application. Whenever you want to add more features to an application, simply add a few functions to it. When calling functions, the caller function may pass certain arguments, called actual arguments; these are then assigned to the parameters of the function. The parameters are also known as formal parameters.

The following recipes will help you understand how functions can be used to make complex applications easier and more manageable. Normally, a function can return only a single...