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

Specifying different sizes of integers

Integers can be specified to have various sizes for their data chunk. The smallest chunk is a single byte. This is called a char. It is so named for historical reasons. Before Unicode came along, the full set of English characters, uppercase, lowercase, numbers, punctuation, and certain special characters, could be represented with 256 values. In some languages, a byte is actually called a byte; unfortunately, not in C.

C99 added more integer types that specify the minimum width of integer values. The basic set of these are of the int<n>_t or uint<n>_tforms, where <n> is either 8, 16, 32, or 64. The values of these types are exactly that number of bits. Such type specifications allow much greater predictability when porting a program from one computer system to a different one with possibly a different CPU and operating system. There are additional integer types to aid portability not listed here: