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Learn C Programming

Learn C Programming

By : Jeff Szuhay
4.7 (6)
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Learn C Programming

Learn C Programming

4.7 (6)
By: Jeff Szuhay

Overview of this book

The foundation for many modern programming languages such as C++, C#, JavaScript, and Go, C is widely used as a system programming language as well as for embedded systems and high-performance computing. With this book, you'll be able to get up to speed with C in no time. The book takes you through basic programming concepts and shows you how to implement them in the C programming language. Throughout the book, you’ll create and run programs that demonstrate essential C concepts, such as program structure with functions, control structures such as loops and conditional statements, and complex data structures. As you make progress, you’ll get to grips with in-code documentation, testing, and validation methods. This new edition expands upon the use of enumerations, arrays, and additional C features, and provides two working programs based on the code used in the book. What's more, this book uses the method of intentional failure, where you'll develop a working program and then purposely break it to see what happens, thereby learning how to recognize possible mistakes when they happen. By the end of this C programming book, you’ll have developed basic programming skills in C that can be easily applied to other programming languages and have gained a solid foundation for you to build on as a programmer.
Table of Contents (38 chapters)
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1
Part 1: C Fundamentals
10
Part 2: Complex Data Types
19
Part 3: Memory Manipulation
22
Part 4: Input and Output
28
Part 5: Building Blocks for Larger Programs

Chapter 22: Working with Files

We have seen how to get data to and from the console via output and input streams. The next step in our exploration of input and output streams is to be able to access a persistent storage mechanism, one where we can save our data, exit the program, and then use it later. Data stored persistently, from one invocation of a program to the next, is saved in a file via standard file operations. Persistently stored data – that is, files – not only exists from one program invocation to the next but also remains in existence after a computer is turned off and then restarted.

In persistent storage, files are the basic entity of storage. In this chapter, we will present the essential properties of files and some basic manipulations that can be performed on them. We will also consider some of the functions that are unique to file manipulations. We will touch briefly on the function of the filesystem, the part of the operating system that manages...

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