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

Using the static specifier for functions

We saw earlier how the static storage class keyword was used for variables. When used with function prototypes or function definitions, it takes on a different purpose. With function prototypes, the static keyword indicates that the function will also be defined later with the static specifier, as follows:

#include "nameList.h"

static NameList* CreateNameList();
static ListNode* CreateListNode( char* pNameToAdd );
static bool IsEmpty();

static void OutOfStorage( void );

NameList* CreateNameList( void ) {

Each of these functions needs to be defined with the static keyword, which is now part of its full prototype. The static keyword in the function definition means that the function will not be exported to the linker. In other words, the static keyword in both the prototype and definition prevents the function from ever being called globally from any other file; it can only be called from within the file...