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)

Drawing a line between two mouse clicks

In this recipe, we will learn to draw a line between two mouse clicks. A mouse click is considered a procedure of pressing the mouse button and releasing it. You can draw as many lines as you want between a pair of mouse press and release events.

How to do it...

The following are the steps to draw a line between two mouse clicks:

  1. Initialize GLUT, define the size of the top-level window, and display the window.
  1. Define a drawLine callback function that draws a line if any mouse click event occurs.
  2. In the drawLine function, the clear values for the clear buffers are specified.
  3. The glutSwapBuffers() function is invoked to swap the front and back buffers to display any frame...