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

Pointers to functions

When we declare a pointer to a function, we need more than just the pointer value – we need to specify both the return type of the function and the parameter list of the function being pointed to.

Let's break this apparent syntactical gobbledygook down into understandable parts. It consists of three parts:

  • The return type of the function; in this case, void.
  • The name of the pointer to the function; in this case, (*printData). This indicates that printData is the name pointer to a function; the function itself may have a completely different name. Given item 1, we know that the function returns void.
  • The function we'll implement via this pointer to it has a parameter list; in this case, (ListData* pData).

Given these three parts, compare the function pointer declaration to the function's prototype; in this case, PrintInt():

void (*printData)(ListData* pData);   /...