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)

Returning maximum and minimum values in an array

C functions cannot return more than one value. But what if you want a function to return more than one value? The solution is to store the values to be returned in an array and make the function return the array instead.

In this recipe, we will make a function return two values, the maximum and minimum values, and store them in another array. Thereafter, the array containing the maximum and minimum values will be returned from the function.

How to do it…

  1. The size of the array whose maximum and minimum values have to be found out is not fixed, hence we will define a macro called max of size 100:
#define max 100
  1. We will define an arr array of the max size,...