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 basic file concepts

Up to this point, data inputs and outputs have moved into and out of our C programs via streams through scanf(), printf(), or other related I/O functions. However, most data exists on computers in files. Files represent persistent data storage in that they exist between invocations of any programs and exist even when the computer is turned off.

Any file will have been created because a program captured input from the user and saved it to a storage medium. The files could've been modified by yet another program and then saved, they could have been copied by any number of programs, or they could have been created from other files by yet another program. Ultimately, nothing happens to a file unless a program does something to it.