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

Understanding internal versus external storage classes

In the storage class of a fixed or named memory, C has explicit mechanisms to allocate that memory. These correlate to the following four C keywords:

  • auto
  • static
  • register
  • extern

Note that the auto keyword represents the automatic storage class, and the static keyword specifies the static storage class. We are currently interested in only the first two of these mechanisms. These keywords precede a variable specification, as follows:

<storage class> [const] <data type> <name> [= <initial value>];

In this specification, the following applies:

  • <storage class>is one of the preceding four keywords.
  • [const]is an optional keyword to indicate whether the named memory can be changed...