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 the properties of the FILE streams

We encountered the FILE structure in Chapter 21, Exploring Formatted Input. This structure consists of information needed to control a stream. It holds the following:

  • A current position indicator: This is relevant if the device has a beginning and an end, such as a file.
  • An End-of-File(EOF)indicator: To show whether we are at the end of the file or not.
  • An error indicator: To show whether an error occurred.
  • A data buffer: When in buffer mode, data is temporarily stored here.
  • A buffer state: Indicates what kind of buffering is in use.
  • I/O mode: Indicates whether this is an input, output, or update stream. An update stream performs both input and output; it requires advanced file manipulations to use properly.
  • Binary or text mode: Is the stream a text stream or a binary stream?
  • An I/O device identifier: A platform-specific identifier...