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)

Displaying the count of each character in a string

In this recipe, you will learn how to create a program that displays the count of each character in a string in a tabular form. 

How to do it…

  1. Create a string called str. The last element in the string will be a null character, \0
  2. Define another string called chr of matching length, to store the characters of str:
char str[80],chr[80];

  1. Prompt the user to enter a string. The entered string will be assigned to the str string:
printf("Enter a string: ");
  1. Compute the length of the string array, str, using strlen:
  1. Define an integer array called count to...