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

Creating an array of structures

In the carddeck_1.c program, we need to model a deck of cards. To do this, we will create an array of the Card structures, as follows:

Card deck[52];

With this statement, we have created an array of 52 cards.

Note how, in the preceding definition, 52 is a magic number; that is, it is a literal number that has a special meaning. However, there is no context associated with that number unless it is stated in the comments. One problem with magic numbers is that as a program evolves or is applied to different uses, the magic numbers aren't all always updated properly. To avoid this problem, we will define some convenience constants, as follows:

enum  {
kCardsinDeck = 52,
kCardsinHand = 5,
kCardsinSuit = 13,
kNumHands = 4

This enum statement declares four constants whose values we defined for each one, these are named literal constants. We would like to have used the following:

const int...