C and C++ reference

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

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)

Assertions − System error (C++11)
Exception types − Error numbers
basic_stacktrace (C++23)
Debugging support (C++26)

Allocators − Smart pointers
Memory resources (C++17)

Type traits − ratio
integer_sequence (C++14)

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)

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)

Range factories − Range adaptors
generator (C++23)

Numeric algorithms
Execution policies (C++17)
Constrained algorithms (C++20)

basic_string − char_traits
basic_string_view (C++17)

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

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

Calendar (C++20) − Time zone (C++20)

Print functions (C++23)
Stream-based I/O − I/O manipulators
basic_istream − basic_ostream
Synchronized output (C++20)
File systems (C++17)

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)

Language − Standard library − Headers

    resource_adaptor − invocation_type

    propagate_const − ostream_joiner − randint
    observer_ptr − Detection idiom

    scope_exit − scope_fail − scope_success − unique_resource

simd

Basic concepts
Keywords
Preprocessor
Expressions
Declaration
Initialization
Functions
Statements

Null-terminated strings:
   byte  −   multibyte  −   wide

Common mathematical functions
Floating-point environment (C99)
Pseudo-random number generation
Complex number arithmetic (C99)
Type-generic math (C99)
Bit manipulation (C23)
Checked integer arithmetic (C23)