C++ reference

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros(C++20)

Language support library

Concepts library(C++20)

Diagnostics library

Memory management library

Metaprogramming library(C++11)

General utilities library

Containers library

Iterators library

Ranges library(C++20)

Algorithms library

Strings library

Text processing library

Numerics library

Date and time library

Input/output library

Filesystem library(C++17)

Concurrency support library(C++11)

Execution control library(C++26)

Technical specifications

Symbols index

External libraries

 

C++11, C++14, C++17, C++20, C++23, C++26  │  Compiler supportC++11, C++14, C++17, C++20, C++23, C++26
Language Preprocessor − Comments ASCII chart Basic concepts     Keywords     Names (lookup)     Types (fundamental types)     The main function     Modules(C++20)     Contracts(C++26) Expressions     Value categories     Evaluation order     Operators (precedence)     Conversions − Literals     Constant expressions Statements     if − switch     for − range-for(C++11)     while − do-while Declarations − Initialization Functions − Overloading Coroutines(C++20) Classes (unions) Templates − Exceptions Freestanding implementations Standard library (headers) Named requirements Language support library Program utilities     Signals − Non-local jumps Basic memory management Variadic functions source_location(C++20) Comparison utilities(C++20) Type support − type_info numeric_limits − exception initializer_list(C++11) Coroutine support(C++20) Contract support(C++26) Concepts library(C++20)	Diagnostics library Assertions − System error(C++11) Exception types − Error numbers basic_stacktrace(C++23) Debugging support(C++26) Memory management library Allocators − Smart pointers Memory resources(C++17) Metaprogramming library(C++11) Type traits − ratio integer_sequence(C++14) General utilities library Function objects − hash(C++11) Swap − Type operations(C++11) Integer comparison(C++20) pair − tuple(C++11) optional(C++17) expected(C++23) variant(C++17) − any(C++17) bitset − Bit manipulation(C++20) Containers library vector − deque − array(C++11) list − forward_list(C++11) inplace_vector(C++26) hive(C++26) map − multimap − set − multiset unordered_map(C++11) unordered_multimap(C++11) unordered_set(C++11) unordered_multiset(C++11) Container adaptors span(C++20) − mdspan(C++23) Iterators library Ranges library(C++20) Range factories − Range adaptors generator(C++23) Algorithms library Numeric algorithms Execution policies(C++17) Constrained algorithms(C++20)	Strings library basic_string − char_traits basic_string_view(C++17) Text processing library Primitive numeric conversions(C++17) Formatting(C++20) − Localization text_encoding(C++26) Regular expressions(C++11)     basic_regex − Algorithms     Default regular expression grammar Null-terminated sequence utilities:     byte − multibyte − wide Numerics library Common math functions Mathematical special functions(C++17) Mathematical constants(C++20) Basic linear algebra algorithms(C++26) Data-parallel types (SIMD)(C++26) Pseudo-random number generation Floating-point environment(C++11) complex − valarray Date and time library Calendar(C++20) − Time zone(C++20) Input/output library Print functions(C++23) Stream-based I/O − I/O manipulators basic_istream − basic_ostream Synchronized output(C++20) File systems(C++17) Concurrency support library(C++11) thread − jthread(C++20) atomic − atomic_flag atomic_ref(C++20) − memory_order Mutual exclusion − Condition variables Futures − Semaphores(C++20) latch(C++20) − barrier(C++20) Safe Reclamation(C++26) Execution support library(C++26) Feature test macros(C++20) Language − Standard library − Headers
Technical specifications     Standard library extensions  (library fundamentals TS)     resource_adaptor − invocation_type     Standard library extensions v2  (library fundamentals TS v2)     propagate_const − ostream_joiner − randint     observer_ptr − Detection idiom     Standard library extensions v3  (library fundamentals TS v3)     scope_exit − scope_fail − scope_success − unique_resource		Parallelism library extensions v2 (parallelism TS v2) simd Concurrency library extensions (concurrency TS) Transactional Memory  (TM TS) Reflection  (reflection TS)
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