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

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