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 the increment operator

Alternatively, we could modify the pointer value to sequentially access each element of the array using the increment operator. We can, therefore, eliminate the four extra incremental assignment statements and make our code a bit more concise, as follows:

*pArray1++ = 1;  // first element (zeroth offset)
*pArray1++ = 2; // second element (first offset)
*pArray1++ = 3; // third element (second offset)
*pArray1++ = 4; // fourth element (third offset)
*pArray1 = 5; // fifth element (fourth offset)

This is a very common C idiom that is used to access and increment the pointer in the same statement. The * operator has equal precedence with the unary operator, ++. When two operators have the same precedence, their order of evaluation is significant. In this case, the order of evaluation is left to right, so *pArray is evaluated first and the target of the pointer evaluation is then assigned a value. Because we use the ++postfix,pArrayis...