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

Bitwise operators

Bitwise operators manipulate bit patterns in useful ways. The bitwise AND &, OR |, and XOR ^ operators compare the two operands bit by bit. The bitwise shifting operators shift all of the bits of the first operand left or right. The bitwise complement changes each bit in a bit pattern to its opposite bit value.

Each bit in a bit field (8, 16, or 32 bits) could be used as if it was a switch, or flag, determining whether some feature or characteristic of the program was off (0) or on (1). The main drawback of using bit fields in this manner is that the meaning of the bit positions can only be known by reading the source code, assuming that the proper source code is both available and well commented!

Bitwise operations are less valuable today, not only because memory and CPU registers are cheap and plentiful, but because they are now expensive operations computationally. They do, occasionally, find a useful place in some programs, but not often...