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