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

Order of operations and grouping

When an expression contains two or more operators, it is essential to know which operation will be performed first, next, and so on. This is known as the order of evaluation. Not all operations are evaluated from left to right.

Consider 3 + 4 * 5. Does this evaluate to 35; 3 + 4 = 7 * 5 = 35? Or does this evaluate to 23; 4 * 5 = 20 + 3 = 23?

If, on the other hand, we explicitly group these operations in the manner desired, we remove all doubt. Either 3 + (4 * 5) or (3 + 4) * 5 is what we actually intend.

C has built-in precedence and associativity of operations that determine how and in what order operations are performed. Precedence determines which operations have a higher priority and are, therefore, performed before those with a lower priority. Associativity refers to how operators of the same precedence are evaluated—from left to right or from right to left.

The following table shows all the operators...