Header files overview

The Standard C++ Library consists of 40 headers. Of these 40 headers, 15 constitute the Standard Template Library, or STL. 10 were added or updated with C++ Technical Report 1, or TR1. These are indicated below with the notations (STL) and (TR1):

• <algorithm> — (STL) for defining numerous templates that implement useful algorithms
• <array> — (TR1) for defining a fixed-size array with a container-like interface
• <bitset> — for defining a template class that administers sets of bits
• <complex> — for defining a template class that supports complex arithmetic
• <deque> — (STL) for defining a template class that implements a deque container
• <exception> — for defining several functions that control exception handling
• <fstream> — for defining several iostreams template classes that manipulate exteral files
• <functional> — (STL) / (TR1) for defining several templates that help construct predicates for the templates defined in <algorithm> and <numeric>
• <iomanip> — for declaring several iostreams manipulators that take an argument
• <ios> — for defining the template class that serves as the base for many iostreams classes
• <iosfwd> — for declaring several iostreams template classes before they are necessarily defined
• <iostream> — for declaring the iostreams objects that manipulate the standard streams
• <istream> — for defining the template class that performs extractions
• <iterator> — (STL) for defining several templates that help define and manipulate iterators
• <limits> — for testing numeric type properties
• <list> — (STL) for defining a template class that implements a list container
• <locale> — for defining several classes and templates that control locale-specific behavior, as in the iostreams classes
• <map> — (STL) for defining template classes that implement associative containers that map keys to values
• <memory> — (STL) / (TR1) for defining templates that use reference counting to manage resources
• <new> — for declaring several functions that allocate and free storage
• <numeric> — (STL) for defining several templates that implement useful numeric functions
• <ostream> — for defining the template class that performs insertions
• <queue> — (STL) for defining a template class that implements a queue container
• <random> — (TR1) for defining random number generators
• <regex> — (TR1) for defining a template class to parse regular expressions and several template classes and functions to search text for matches to a regular expression object
• <set> — (STL) for defining template classes that implement associative containers
• <sstream> — for defining several iostreams template classes that manipulate string containers
• <stack> — (STL) for defining a template class that implements a stack container
• <stdexcept> — for defining several classes useful for reporting exceptions
• <streambuf> — for defining template classes that buffer iostreams operations
• <string> — for defining a template class that implements a string container
• <strstream> — for defining several iostreams classes that manipulate in-memory character sequences
• <typeinfo> — for defining class type_info, the result of the typeid operator
• <type_traits> — (TR1) for accessing detailed type information at compile time to support generic programming
• <tuple> — (TR1) for defining a template tuple whose instances hold objects of varying types
• <unordered_map> — (STL) / (TR1) for defining template classes that implement unordered associative containers that map keys to values
• <unordered_set> — (STL) / (TR1) for defining template classes that implement unordered associative containers
• <utility> — (STL) / (TR1) for defining two tuple-like templates that provide information about the contents of instances of std::pair
• <valarray> — for defining several classes and template classes that support value-oriented arrays
• <vector> — (STL) for defining a template class that implements a vector container