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

Passing addresses to functions without pointer variables

We can actually go one step further and remove the pointer variables in main() and then pass the desired addresses directly in each function call. We'll still need the pointer variables as function parameters in the function definition, just not in the main() function body.

Copy pointers2.c to pointers3.c and modify only the body of main(), as follows:

  int height = 10;
int width= 20;
int length = 40;

printf( "\nValues:\n\n");
showInfo( height , width , length );

printf( "\nUsing address of each named variables...\n\n");
showVariable( "height" , &height );
showVariable( "width " , &width );
showVariable( "length" , &length );

The showInfo() and showVariables()functions do not change. You'll also have to remove theprintf()statement that prints info aboutpDimension. Save, compile, and run the program. As before, the output should...