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)

Making a bar graph of the supplied values

In this recipe, we will learn to draw bar charts. Let's assume we have data about the percentage of profit growth of a company for the last three years. We will assign that percentage of profit growth to an array, and on the basis of the values in the array, we will draw a bar chart with three bars on the screen.

How to do it...

The following are the steps for drawing a bar chart with the values defined in an array:

  1. Initialize GLUT, define the size of the top-level window, set its initial position for display, and display the window on the screen.
  2. Define the callback function that is auto-invoked after creating a window for drawing the bar chart.
  3. An array is defined...