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)

Preprocessing and Compilation

There are several preprocessor statements that can help you determine which source code needs to be compiled and which needs to be excluded from being compiled. That is, a condition can be applied and the desired statements will be compiled only if the specified condition is true. These directives can be nested for more precise branching. There are numerous preprocessor statements, such as #if, #ifdef, #ifndef, #else, #elif, and #endif, that can be used to collect statements into blocks that we want to be compiled when the specified condition is true.

Some of the advantages of using macros are as follows:

  • The execution speed of the program increases as the value or code of the macro is substituted by the name of the macro. So, the time involved in invoking or calling the functions by the compiler is saved.
  • Macros reduce the length of the...