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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 23 – Using File Input and File Output

  1. Because of the variety of input and output, we needed to verify each possible execution path within our program.
  2. If a specified input file does not exist, it makes no sense to continue processing. The program must exit.
  3. When an output file is opened for writing, its current contents are cleared and a file is created with new data. When an output file is opened for appending, any new data is added to the end of the file; the pre-existing file data is preserved.
  4. Handling the final <newline> character when using fgets() depends upon the context in which fgets() is used. In the last chapter, we used a wrapper function around fgets(). In this chapter, we didn't need to do that, since the trimStr() function is always used after fgets(), which removes all leading and trailing whitespace.

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