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

Internal or local storage classes

Not only have we been using automatic, fixed storage in all the preceding chapters, we have also been using the sub-class of internal storage. Internal storage is a memory that is allocated either with a compound statement (between { and }) or as a function parameter.

Internal memory includes loop variables that are allocated when the loop is entered and deallocated when the loop is exited or completes.

Internal memory variables are only accessible within the compound statement where they've been declared, and any sub-compound statement declared within that compound statement. Their scope is limited to their enclosing { and }. They are not accessible from any other function or any function that calls them. Therefore, they are often referred to as a local memory because they are strictly local to the code block within which they are declared.

Consider the following function:

double doSomething( double aReal...