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Beej's Guide to C Programming

Brian “Beej Jorgensen” Hall

v0.10.0, Copyright © September 17, 2025

1 Foreword
2 Hello, World!
3 Variables and Statements
4 Functions
5 Pointers—Cower In Fear!
6 Arrays
7 Strings
8 Structs
9 File Input/Output
10 typedef: Making New Types
11 Pointers II: Arithmetic
12 Manual Memory Allocation
13 Scope
14 Types II: Way More Types!
15 Types III: Conversions
16 Types IV: Qualifiers and Specifiers
- 16.1 Type Qualifiers
- 16.2 Storage-Class Specifiers
17 Multifile Projects
18 The Outside Environment
19 The C Preprocessor
20 structs II: More Fun with structs
21 Characters and Strings II
- 21.1 Escape Sequences
22 Enumerated Types: enum
- 22.1 Behavior of enum
- 22.2 Your enum is a Type
23 Pointers III: Pointers to Pointers and More
24 Bitwise Operations
- 24.1 Bitwise AND, OR, XOR, and NOT
- 24.2 Bitwise Shift
25 Variadic Functions
26 Locale and Internationalization
27 Unicode, Wide Characters, and All That
28 Exiting a Program
29 Signal Handling
30 Variable-Length Arrays (VLAs)
31 goto
32 Types Part V: Compound Literals and Generic Selections
- 32.1 Compound Literals
- 32.2 Generic Selections
33 Arrays Part II
34 Long Jumps with setjmp, longjmp
- 34.1 Using setjmp and longjmp
- 34.2 Pitfalls
35 Incomplete Types
36 Complex Numbers
37 Fixed Width Integer Types
38 Date and Time Functionality
39 Multithreading
40 Atomics
41 Function Specifiers, Alignment Specifiers/Operators

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