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

Declaring the pointer type, naming pointers, and assigning addresses

The most basic aspects of pointers are the following:

  • We can declare a variable of the pointer type
  • We can assign an already-declared named location to it
  • We can perform a limited number of operations on pointers

So, while a pointer is a variable and can change, we do not assign values to it willy-nilly. A pointer should only be assigned a value that is an already-declared and named location. This means that a pointer must point to something that already exists in memory.

Because pointers give us values somewhat differently than simple variables, we also need to consider some naming conventions that set them apart from regular variables. These are conventions only and are intended to make the purpose of the variable as a pointer clear.