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The C++ Standard Library can be categorized into two parts:
  • The Standard Function Library: This library consists of general-purpose,stand-alone functions that are not part of any class. The function library is inherited from C.
  • The Object Oriented Class Library: This is a collection of classes and associated functions.
Standard C++ Library incorporates all the Standard C libraries also, with small additions and changes to support type safety.

The Standard Function Library

The standard function library is divided into the following categories:
  • I/O
  • String and character handling
  • Mathematical
  • Time, date, and localization
  • Dynamic allocation
  • Miscellaneous
  • Wide-character functions

The Object Oriented Class Library

Standard C++ Object Oriented Library defines an extensive set of classes that provide support for a number of common activities, including I/O, strings, and numeric processing. This library includes the following:
  • The Standard C++ I/O Classes
  • The String Class
  • The Numeric Classes
  • The STL Container Classes
  • The STL Algorithms
  • The STL Function Objects
  • The STL Iterators
  • The STL Allocators
  • The Localization library
  • Exception Handling Classes
  • Miscellaneous Support Library

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