Book Image

Learn C Programming

By : Jeff Szuhay
Book Image

Learn C Programming

By: Jeff Szuhay

Overview of this book

C is a powerful general-purpose programming language that is excellent for beginners to learn. This book will introduce you to computer programming and software development using C. If you're an experienced developer, this book will help you to become familiar with the C programming language. This C programming book takes you through basic programming concepts and shows you how to implement them in C. Throughout the book, you'll create and run programs that make use of one or more C concepts, such as program structure with functions, data types, and conditional statements. You'll also see how to use looping and iteration, arrays, pointers, and strings. As you make progress, you'll cover code documentation, testing and validation methods, basic input/output, and how to write complete programs in C. By the end of the book, you'll have developed basic programming skills in C, that you can apply to other programming languages and will develop a solid foundation for you to advance as a programmer.
Table of Contents (33 chapters)
Section 1: C Fundamentals
Section 2: Complex Data Types
Section 3: Memory Manipulation
Section 4: Input and Output
Section 5: Building Blocks for Larger Programs

Representing single characters

To specify a single character, use either char or unsigned char. C was developed in the time before Unicode. The character set they decided upon using was ASCII (short for American Standard Code for Information Interchange). All the necessary characters for printing control, device control, and printable characters and punctuation could be represented in 7 bits.

One reason ASCII was chosen was because of its somewhat logical ordering of uppercase and lowercase letters. An uppercase A and lowercase a are different by only 1 bit. This makes it relatively easy to convert from uppercase to lowercase and vice versa. There is an ASCII table provided for your reference in the Appendix; we also develop a program to print a complete ASCII table in Chapter 15, Working with Strings.

To summarize ASCII's organization, refer to the following table: