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

Using nested loops to traverse a three-dimensional array

To traverse a three-dimensional array, we use a two-dimensional loop within a loop. The outer loop controls the layer offset, and the inner loops control the row and column offsets. Our nested loop structure is as follows:

for( k = 0 ; k < size3D ; k++ )  {      // k : 0..(size3D-1)
for( j = 0 ; j < size2D ; j++ ) { // j : 0..(size2D-1)
for( i = 0 ; i < size1D ; i++ ) { // i : 0..(size1D-1)
array2D[k][j][i] = (k*100) + (j*10) + i ;

Each element of array3D is assigned a value based on the offset values of i, j, and k.

What if we wanted to assign all the values of array2D to the last layer of array3D? Again, we would use nested loops, as follows:

for( j = 0; j < size2D ; j++ )
for( i = 0; i < size1D ; i++ )
array3D[(size3D-1)][j][i] = array2D[j][i] + (100*(size3D-1));

(size3D-1) is the offset of the last layer of the three-dimensional...