Part I: The Foundation of C++: The C Subset
1: An Overview of C
2: Expressions
3: Statements
4: Arrays and Null-Terminated Strings
5: Pointers
6: Functions
7: Structures, Unions, Enumerations, and User-Defined Types
8: C-Style Console I/O
9: File I/O
10: The Preprocessor and Comments
Part II: C++
11: An Overview of C++
12: Classes and Objects
13: Arrays, Pointers, References, and the Dynamic Allocation Operators
14: Function Overloading, Copy Constructors, and Default Arguments
15: Operator Overloading
16: Inheritance
17: Virtual Functions and Polymorphism
18: Templates
19: Exception Handling
20: The C++ I/O System Basics
21: C++ File I/O
22: Run-Time Type ID and the Casting Operators
23: Namespaces, Conversion Functions, and Other Advanced Topics
24: Introducing the Standard Template Library
Part III: The Standard Function Library
25: The C-Based I/O Functions
26: The String and Character Functions
27: The Mathematical Functions
28: Time, Date, and Localization Functions
29: The Dynamic Allocation Functions
30: Utility Functions
31: The Wide-Character Functions
Part IV: The Standard C++ Class Library
32: The Standard C++ I/O Classes
33: The STL Container Classes
34: The STL Algorithms
35: STL Iterators, Allocators, and Function Objects
36: The String Class
37: The Numeric Classes
38: Exception Handling and Miscellaneous Classes
Part V : Applying C++
39: Integrating New Classes: A Custom String Class
40: An Object-Oriented Expression Parser

Keep this comprehensive C language reference within arm's reach. -- Edited summary from book