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

Multiple assignments in a single expression

We have learned how to combine expressions to make compound expressions. We can also do this with assignments. For example, we could initialize variables as follows:

int height, width, length;
height = width = length = 0;

The expressions are evaluated from right to left, and the final result of the expression is the value of the last assignment. Each variable is assigned a value of 0.

Another way to put multiple assignments in a single statement is to use the ,sequence operator. We could write a simple swap statement in one line with three variables, as follows:

int first, second, temp;

// Swap first & second variables.
temp = first, first = second, second = temp;

The sequence of three assignments is performed from left to right. This would be equivalent to the following three statements:

temp = first;
first = second;
second = temp;

Either way is correct. Some might argue that the...