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)
1
Section 1: C Fundamentals
10
Section 2: Complex Data Types
19
Section 3: Memory Manipulation
22
Section 4: Input and Output
28
Section 5: Building Blocks for Larger Programs

The sequence operator

Sometimes, it makes sense to perform a sequence of expressions as though they were a single statement. This would rarely be used or make sense in a normal statement.

We can string multiple expressions together in sequence using the , operator. Each expression is evaluated from left to right in the order they appear. The value of the entire expression is the resultant value of the rightmost expression.

For instance, consider the following:

int x = 0, y = 0, z = 0;  // declare and initialize. 
...
...
x = 3 , y = 4 , z = 5;
...
...
x = 4; y = 3; z = 5;
...
...
x = 5;
y = 12;
z = 13;

The single line assigning all three variables is perfectly valid. However, in this case, there is little value in doing it. The three variables are either loosely related or not related at all from what we can tell in this snippet.

The next line makes each assignment its own expression and condenses the code from three lines to one. While it is also...