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

Thesizeof() operator

The sizeof() operation is a built-in function that takes as its parameter a C data type and returns the number of bytes for that data type. Let's write a program to see how this works.

In the first part, we'll set up the necessary include files, declare function prototypes, and create our main() function. Even though we show this program in two parts, it is really just a single file. The following program, sizes_ranges1.c, shows the first part of our program:

#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>

// function prototypes
void printSizes( void );

int main( void )

The header file, stdio.h, is included, as are two new header files—stdint.h and stdbool.h. Recall that stdio.h declares, amongst other things, the function prototype for printf(). stdint.h declares the sizes in bytes of each of the intrinsic data types. stdbool.h defines the booldata type and the values true...