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)

Finding the occurrence of the first repetitive character in a string

In this recipe, you will learn how to create a program that displays the first character to be repeated in a string. For example, if you enter the string racecar, the program should give the output as The first repetitive character in the string racecar is c. The program should display No character is repeated in the string if a string with no repetitive characters is entered.

How to do it…

  1. Define two strings called str1 and str2. Your strings can be of any length, but the last position in the string is fixed for the null character \0:
char str1[80],str2[80];
  1. Enter characters to be assigned to str1. The characters...