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

Postfix versus prefix incrementation

There are subtle differences between how that value of the counter is incremented when it is prefixed (++ comes before the expression is evaluated) or postfixed (++ comes after the expression).

In prefix notation, ++ is applied to the result of the expression before its value is considered. In postfix notations, the result of the expression is applied to any other evaluation and then the ++ operation is performed.

Here, an example will be useful.

In this example, we set a value and then print that value using both the prefix and postfix notations. Finally, the program shows a more predictable method. That is, perform either method of incrementation as a single statement. The result will always be what we expect:

int main( void )
int aValue = 5;

// Demonstrate prefix incrementation.
printf( "Initial: %d\n" , aValue );
printf( " Prefix: %d\n" , ++aValue ); // Prefix incrementation.