C++ standard library header files

Header files for the C++ standard library and extensions, by category.

Headers by category

Category Headers
Algorithms <algorithm>, <cstdlib>, <numeric>
Atomic operations <atomic>11
C library wrappers <cassert>, <ccomplex>11 a b, <cctype>, <cerrno>, <cfenv>11, <cfloat>, <cinttypes>11, <ciso646>b, <climits>, <clocale>, <cmath>, <csetjmp>, <csignal>, <cstdalign>11 a b, <cstdarg>, <cstdbool>11 a b, <cstddef>, <cstdint>11, <cstdio>, <cstdlib>, <cstring>, <ctgmath>11 a b, <ctime>, <cuchar>11, <cwchar>, <cwctype>
Concepts <concepts>20
Containers
Sequence containers <array>11, <deque>, <forward_list>11, <list>, <vector>
Ordered associative containers <map>, <set>
Unordered associative containers <unordered_map>11, <unordered_set>11
Container adaptors <queue>, <stack>
Container views <span>20
Errors and exception handling <cassert>, <exception>, <stdexcept>, <system_error>11
General utilities <any>17, <bitset>, <charconv>17, <cstdlib>, <execution>17, <functional>, <memory>, <memory_resource>17, <optional>17, <ratio>11, <scoped_allocator>11, <tuple>11, <type_traits>11, <typeindex>11, <utility>, <variant>17
I/O and formatting <cinttypes>11, <cstdio>, <filesystem>17, <fstream>, <iomanip>, <ios>, <iosfwd>, <iostream>, <istream>, <ostream>, <sstream>, <streambuf>, <strstream>c, <syncstream>20
Iterators <iterator>
Language support <cfloat>, <climits>, <codecvt>11 a, <compare>20, <contract>20, <coroutine>20, <csetjmp>, <csignal>, <cstdarg>, <cstddef>, <cstdint>11, <cstdlib>, <exception>, <initializer_list>11, <limits>, <new>, <typeinfo>, <version>20
Localization <clocale>, <codecvt>11 a, <cvt/wbuffer>, <cvt/wstring>, <locale>
Math and numerics <bit>20, <cfenv>11, <cmath>, <complex>, <cstdlib>, <limits>, <numeric>, <random>11, <ratio>11, <valarray>
Memory management <allocators>, <memory>, <memory_resource>17, <new>, <scoped_allocator>11
Multithreading <atomic>11, <condition_variable>11, <future>11, <mutex>11, <shared_mutex>14, <thread>11
Ranges <ranges>20
Regular expressions <regex>11
Strings and character data <cctype>, <cstdlib>, <cstring>, <cuchar>11, <cwchar>, <cwctype>, <regex>11, <string>, <string_view>17
Time <chrono>11, <ctime>

11 Added in the C++11 standard.
14 Added in the C++14 standard.
17 Added in the C++17 standard.
20 Added in the draft C++20 standard.
a Deprecated in the C++17 standard.
b Removed in the draft C++20 standard.
c Deprecated in the C++98 standard.

Category Headers
Algorithms <algorithm>
C library wrappers <cassert>, <cctype>, <cerrno>, <cfenv>, <cfloat>, <cinttypes>, <ciso646>, <climits>, <clocale>, <cmath>, <csetjmp>, <csignal>, <cstdarg>, <cstdbool>, <cstddef>, <cstdint>, <cstdio>, <cstdlib>, <cstring>, <ctgmath>, <ctime>, <cwchar>, <cwctype>
Containers
Sequence containers <array>, <deque>, <forward_list>, <list>, <vector>
Ordered associative containers <map>, <set>
Unordered associative containers <unordered_map>, <unordered_set>
Adaptor containers <queue>, <stack>
Errors and exception handling <exception>, <stdexcept>, <system_error>
I/O and formatting <filesystem>, <fstream>, <iomanip>, <ios>, <iosfwd>, <iostream>, <istream>, <ostream>, <sstream>, <streambuf>, <strstream>
Iterators <iterator>
Localization <codecvt>, <cvt/wbuffer>, <cvt/wstring>, <locale>
Math and numerics <complex>, <limits>, <numeric>, <random>, <ratio>, <valarray>
Memory Management <allocators>, <memory>, <new>, <scoped_allocator>
Multithreading <atomic>, <condition_variable>, <future>, <mutex>, <shared_mutex>, <thread>
Other utilities <bitset>, <chrono>, <functional>, <initializer_list>, <tuple>, <type_traits>, <typeinfo>, <typeindex>, <utility>
Strings and character data <regex>, <string>, <string_view>

See also

Using C++ library headers
C++ standard library