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

Accessing array elements

Each element of an array is accessed via its basename and an index into the array. An index is also known as a subscript. Each element is accessed using the following form:

arrayName[ index ]

Here, index is a value between 0 and the array size minus 1. We can access any element of an array using this form. Just as with declaring an array, the index may be a literal value, a variable, the result of a function call, or the result of an expression, as follows:

float anArray[10] = {2.0};
int counter = 9;
float aFloat = 0.0;

aFloat = anArray[ 9 ]; // Access last element.
aFloat = anArray[ counter ]; // Access last element via value
// of counter.
aFloat = anArray[ exp( 3 , 2 ) ]; // Access element at result of
// function.
aFloat = anArray[ (sizeof(anArray)/sizeof(float) - 1 ]; // Access
// last element via expression...