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C++ Standard Library header files

From cppreference.com
< cpp

The interface of C++ standard library is defined by the following collection of header files.

Contents

Utilities library

<cstdlib> General purpose utilities: program control, dynamic memory allocation, random numbers, sort and search
<csignal> Functions and macro constants for signal management
<csetjmp> Macro (and function) that saves (and jumps) to an execution context
<cstdarg> Handling of variable length argument lists
<typeinfo> Runtime type information utilities
<typeindex> (since C++11) std::type_index
<type_traits> (since C++11) Compile-time type information
<bitset> std::bitset class template
<functional> Function objects, designed for use with the standard algorithms
<utility> Various utility components
<ctime> C-style time/date utilites
<chrono> (since C++11) C++ time utilites
<cstddef> typedefs for types such as size_t, NULL and others
<initializer_list> (since C++11) std::initializer_list class template
<tuple> (since C++11) std::tuple class template
<any> (since C++17) std::any class template
<optional> (since C++17) std::optional class template
Dynamic memory management
<new> Low-level memory management utilities
<memory> Higher level memory management utilities
<scoped_allocator> (since C++11) Nested allocator class
<memory_resource> (since C++17) Polymorphic allocators and memory resources
Numeric limits
<climits> limits of integral types
<cfloat> limits of float types
<cstdint> (since C++11) fixed-size types and limits of other types
<cinttypes> (since C++11) formatting macros , intmax_t and uintmax_t math and conversions
<limits> standardized way to query properties of arithmetic types
Error handling
<exception> Exception handling utilities
<stdexcept> Standard exception objects
<cassert> Conditionally compiled macro that compares its argument to zero
<system_error> (since C++11) defines std::error_code, a platform-dependent error code
<cerrno> Macro containing the last error number

Strings library

<cctype> functions to determine the type contained in character data
<cwctype> functions for determining the type of wide character data
<cstring> various narrow character string handling functions
<cwchar> various wide and multibyte string handling functions
<cuchar> (since C++11) C-style Unicode character conversion functions
<string> std::basic_string class template
<string_view> (since C++17) std::basic_string_view class template

Containers library

<array> (since C++11) std::array container
<vector> std::vector container
<deque> std::deque container
<list> std::list container
<forward_list> (since C++11) std::forward_list container
<set> std::set and std::multiset associative containers
<map> std::map and std::multimap associative containers
<unordered_set> (since C++11) std::unordered_set and std::unordered_multiset unordered associative containers
<unordered_map> (since C++11) std::unordered_map and std::unordered_multimap unordered associative containers
<stack> std::stack container adaptor
<queue> std::queue and std::priority_queue container adaptors

Algorithms library

<algorithm> Algorithms that operate on containers
<execution> (C++17) Predefined execution policies for parallel versions of the algorithms

Iterators library

<iterator> Container iterators

Numerics library

<cmath> Common mathematics functions
<complex> Complex number type
<valarray> Class for representing and manipulating arrays of values
<random> (since C++11) Random number generators and distributions
<numeric> Numeric operations on values in containers
<ratio> (since C++11) Compile-time rational arithmetic
<cfenv> (since C++11) Floating-point environment access functions

Input/output library

<iosfwd> forward declarations of all classes in the input/output library
<ios> std::ios_base class, std::basic_ios class template and several typedefs
<istream> std::basic_istream class template and several typedefs
<ostream> std::basic_ostream, std::basic_iostream class templates and several typedefs
<iostream> several standard stream objects
<fstream> std::basic_fstream, std::basic_ifstream, std::basic_ofstream class templates and several typedefs
<sstream> std::basic_stringstream, std::basic_istringstream, std::basic_ostringstream class templates and several typedefs
<strstream> std::strstream, std::istrstream, std::ostrstream(deprecated)
<iomanip> Helper functions to control the format or input and output
<streambuf> std::basic_streambuf class template
<cstdio> C-style input-output functions

Localization library

<locale> Localization utilities
<clocale> C localization utilities
<codecvt> (since C++11) Unicode conversion facilities

Regular Expressions library

<regex> (since C++11) Classes, algorithms and iterators to support regular expression processing

Atomic Operations library

<atomic> (since C++11) Atomic operations library

Thread support library

<thread> (since C++11) std::thread class and supporting functions
<mutex> (since C++11) mutual exclusion primitives
<shared_mutex> (since C++14) shared mutual exclusion primitives
<future> (since C++11) primitives for asynchronous computations
<condition_variable> (since C++11) thread waiting conditions

Filesystem library

<filesystem> (since C++17) std::path class and supporting functions

Experimental libraries

<experimental/algorithm> (library fundamentals TS) Standard libraries extensions and Extensions for Parallelism
<experimental/any> (library fundamentals TS) Standard libraries extensions
<experimental/chrono> (library fundamentals TS) Standard libraries extensions
<experimental/deque> (library fundamentals TS) Standard libraries extensions
<experimental/execution_policy> (parallelism TS) Extensions for Parallelism
<experimental/exception_list> (parallelism TS) Extensions for Parallelism
<experimental/filesystem> (filesystem TS) Filesystem library
<experimental/forward_list> (library fundamentals TS) Standard libraries extensions
<experimental/future> (library fundamentals TS) Standard libraries extensions
<experimental/list> (library fundamentals TS) Standard libraries extensions
<experimental/functional> (library fundamentals TS) Standard libraries extensions
<experimental/map> (library fundamentals TS) Standard libraries extensions
<experimental/memory> (library fundamentals TS) Standard libraries extensions
<experimental/memory_resource> (library fundamentals TS) Standard libraries extensions
<experimental/numeric> (parallelism TS) Extensions for Parallelism
<experimental/optional> (library fundamentals TS) Standard libraries extensions
<experimental/ratio> (library fundamentals TS) Standard libraries extensions
<experimental/regex> (library fundamentals TS) Standard libraries extensions
<experimental/set> (library fundamentals TS) Standard libraries extensions
<experimental/string> (library fundamentals TS) Standard libraries extensions
<experimental/string_view> (library fundamentals TS) Standard libraries extensions
<experimental/system_error> (library fundamentals TS) Standard libraries extensions
<experimental/tuple> (library fundamentals TS) Standard libraries extensions
<experimental/type_traits> (library fundamentals TS) Standard libraries extensions
<experimental/unordered_map> (library fundamentals TS) Standard libraries extensions
<experimental/unordered_set> (library fundamentals TS) Standard libraries extensions
<experimental/utility> (library fundamentals TS) Standard libraries extensions
<experimental/vector> (library fundamentals TS) Standard libraries extensions

C compatibility headers

<ciso646> empty header. The macros that appear in iso646.h in C are keywords in C++
<ccomplex> (since C++11)(deprecated in C++17) simply includes the header <complex>
<ctgmath> (since C++11)(deprecated in C++17) simply includes the headers <ccomplex> (until C++17)<complex> (since C++17) and <cmath>: the overloads equivalent to the contents of the C header tgmath.h are already provided by those headers
<cstdalign> (since C++11)(deprecated in C++17) defines one compatibility macro constant
<cstdbool> (since C++11)(deprecated in C++17) defines one compatibility macro constant

Deprecated headers

<assert.h> (deprecated) behaves as if each name from <cassert> is placed in global namespace
<complex.h> (deprecated) behaves as if each name from <ccomplex> is placed in global namespace
<ctype.h> (deprecated) behaves as if each name from <cctype> is placed in global namespace
<errno.h> (deprecated) behaves as if each name from <cerrno> is placed in global namespace
<fenv.h> (deprecated) behaves as if each name from <cfenv> is placed in global namespace
<float.h> (deprecated) behaves as if each name from <cfloat> is placed in global namespace
<inttypes.h> (deprecated) behaves as if each name from <cinttypes> is placed in global namespace
<iso646.h> (deprecated) behaves as if each name from <ciso646> is placed in global namespace
<limits.h> (deprecated) behaves as if each name from <climits> is placed in global namespace
<locale.h> (deprecated) behaves as if each name from <clocale> is placed in global namespace
<math.h> (deprecated) behaves as if each name from <cmath> is placed in global namespace
<setjmp.h> (deprecated) behaves as if each name from <csetjmp> is placed in global namespace
<signal.h> (deprecated) behaves as if each name from <csignal> is placed in global namespace
<stdalign.h> (deprecated) behaves as if each name from <cstdalign> is placed in global namespace
<stdarg.h> (deprecated) behaves as if each name from <cstdarg> is placed in global namespace
<stdbool.h> (deprecated) behaves as if each name from <cstdbool> is placed in global namespace
<stddef.h> (deprecated) behaves as if each name from <cstddef> is placed in global namespace
<stdint.h> (deprecated) behaves as if each name from <cstdint> is placed in global namespace
<stdio.h> (deprecated) behaves as if each name from <cstdio> is placed in global namespace
<stdlib.h> (deprecated) behaves as if each name from <cstdlib> is placed in global namespace
<string.h> (deprecated) behaves as if each name from <cstring> is placed in global namespace
<tgmath.h> (deprecated) behaves as if each name from <ctgmath> is placed in global namespace
<time.h> (deprecated) behaves as if each name from <ctime> is placed in global namespace
<uchar.h> (deprecated) behaves as if each name from <cuchar> is placed in global namespace
<wchar.h> (deprecated) behaves as if each name from <cwchar> is placed in global namespace
<wctype.h> (deprecated) behaves as if each name from <cwctype> is placed in global namespace

[edit] See also

C documentation for C Standard Library header files