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

Bytes and chunks of data

The smallest data value in C is a bit. However, bit operations tend to be very expensive and not all that common for most computer problems. We will not go into bit operations in this book. If you find you need to delve deeper into bit operations in C, please check out the annotated bibliography in the appendix for texts that treat this subject more fully.

The basic data value in C is a byte or a sequence of 8 bits. The set of values a byte can represent is 256, or 28 values. These values have a range of 0 to 255, or 28-1. 0 is a value that must be represented in the set of 256 values; we can't leave that value out. A byte can either represent a positive integer in the range of 0-255, or 28-1, or a negative integer in the range of -128-127. In either case, there are only 256 unique combinations of 1s and 0s.

While most humans don't ordinarily count this high, for a computer, this is a very narrow range of values. A byte is the...