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

Using pointer arithmetic

An integer value in pointer arithmetic represents the element to which the pointer points. When an integer is added to a pointer, the integer is automatically converted into the size of the pointer element in bytes and added to the pointer. This is equivalent to incrementing an array index. Put another way, incrementing a pointer is equivalent to incrementing the index of an array.

Even though pointers are nearly identical to integers—they are positive, whole numbers that can be added, subtracted, and compared—they are treated slightly differently from integers when pointer arithmetic is performed. The following cases illustrate the various results when operations on a pointer and an integer are mixed:

pointer + integer → pointer

integer + pointer → pointer

pointer – integer → pointer

pointer –...