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

Introducing explicit types of variables

The format of a variable declaration is type identifier; or type identifier1, identifiers, ... ;.

Here, type is one of the data types that we encountered earlier and identifier is the name of the variable we are declaring. In the first example, a single variable is declared. In the second form, multiple variables are declared, each having the same type, separated by commas. Note that each one is a C statement because it concludes with;. Consider the following variable declarations:

#include <stdbool.h>   /* So we can use: bool, true, false */

int aNumber;
long aBigNumber;
long long aReallyBigNumber;
float inches;
float feed;
float yards;
double length, width, height;
bool isItRaining;

In each of these declarations, we use spacing to make the type and name of each variable easier to read. Unfortunately, these declarations are not necessarily the best we could use. The values of the variables...