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

Understanding data types

Everything in a computer is a sequence ofbinary digits(or bits). A single bit is either off (0) or on (1). Eight bits are strung together to form a byte. A byte is the basic data unit. Bytes are treated singly, as pairs called16-bit words, as quadruples to form 32-bit words, and as octets to form 64-bit words. These combinations of sizes of bytes are used in the following ways:

  • Instructions for the CPU
  • Addresses for the locations of all things in the computer
  • Data values

The compiler generates binary instructions from our C statements; hence, we don't need to deal with the instructions since we are writing proper C syntax.

We also interact with various parts of the computer via the address of that part. Typically, we don't do this directly. For instance, we've seen how printf() knows how to fetch the data from a function call we make and then move it to the part of the computer...