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Learn C Programming. - Second Edition

You're reading from  Learn C Programming. - Second Edition

Product type Book
Published in Aug 2022
Publisher Packt
ISBN-13 9781801078450
Pages 742 pages
Edition 2nd Edition
Languages
Author (1):
Jeff Szuhay Jeff Szuhay
Profile icon Jeff Szuhay

Table of Contents (37) Chapters

Preface 1. Part 1: C Fundamentals
2. Chapter 1:Running Hello, World! 3. Chapter 2: Understanding Program Structure 4. Chapter 3: Working with Basic Data Types 5. Chapter 4: Using Variables and Assignments 6. Chapter 5: Exploring Operators and Expressions 7. Chapter 6: Exploring Conditional Program Flow 8. Chapter 7: Exploring Loops and Iterations 9. Chapter 8: Creating and Using Enumerations 10. Part 2: Complex Data Types
11. Chapter 9: Creating and Using Structures 12. Chapter 10: Creating Custom Data Types with typedef 13. Chapter 11: Working with Arrays 14. Chapter 12: Working with Multi-Dimensional Arrays 15. Chapter 13: Using Pointers 16. Chapter 14: Understanding Arrays and Pointers 17. Chapter 15: Working with Strings 18. Chapter 16: Creating and Using More Complex Structures 19. Part 3: Memory Manipulation
20. Chapter 17: Understanding Memory Allocation and Lifetime 21. Chapter 18: Using Dynamic Memory Allocation 22. Part 4: Input and Output
23. Chapter 19: Exploring Formatted Output 24. Chapter 20: Getting Input from the Command Line 25. Chapter 21: Exploring Formatted Input 26. Chapter 22: Working with Files 27. Chapter 23: Using File Input and File Output 28. Part 5: Building Blocks for Larger Programs
29. Chapter 24: Working with Multi-File Programs 30. Chapter 25: Understanding Scope 31. Chapter 26: Building Multi-File Programs with Make 32. Chapter 27:Creating Two Card Programs 33. Epilogue 34. Assessments 35. Other Books You May Enjoy Appendix

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 a 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 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.

Revisiting file streams

A stream is the means of transferring data, specifically bytes, between any device and a program. Streams are device-oriented. Devices, as we have...

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