Alphabetical Index

Alphabetical Index

A quick alphabetized map of major C and C++ keywords, headers, types, operators, and utility families.

How to use this reference page

Use reference pages to confirm names, categories, nearby facilities, and the constraints that matter before writing or reviewing code.

Scan the top of the page first to identify the primary types, functions, or algorithm families involved.
Use the nearby-page links when your question is really about a companion header, related algorithm family, or broader subsystem.
Validate tricky behavior with a small compileable example before relying on memory for details like invalidation, ordering, allocation, or lifetime rules.

Alphabetical Index

This is a lookup hub. Entries point to the most relevant reference page for that name or family.

A

abort, abs, allocation helpers: C standard library
alignof, _Alignof, _Alignas: C++ language reference, C language reference
algorithm, accumulate, any, apply: C++ standard library, C++ algorithms and ranges
assert: C standard library, C standard headers index, C++ standard headers index
auto: C language reference, C++ language reference

B

bad_alloc, bad_cast, bad_optional_access, bad_variant_access: Standard exceptions and errors
barrier, bitand, bitor, bool, _Bool: C++ concurrency library, C++ language reference, C language reference
break, bsearch: C language reference, C standard library

C

case, catch, char, char8_t, char16_t, char32_t: C language reference, C++ language reference
calloc, cerr, cin, cout, chrono, complex, concept: C standard library, C++ standard library, C++ numerics and time, C++ language reference
const, consteval, constexpr, constinit, const_cast: C++ language reference
continue, condition_variable, concepts: C language reference, C++ concurrency library

D

default, define, deque, delete, deque, difftime, div: C language reference, C preprocessor and macros, C++ containers and views, C standard library
do, domain_error, double, dynamic_cast: C language reference, C++ language reference, Standard exceptions and errors

E

else, endif, enum, errno, error_code, error_condition, exception, expected, explicit, export, extern: C language reference, C preprocessor and macros, C standard library, C++ language reference, C++ standard library, Standard exceptions and errors

F

false, fclose, filesystem, final, float, for, format, forward, friend, from_chars, future: C standard library, C++ language reference, C++ standard library, C++ concurrency library

G

get, getenv, getline-style families, gmtime, goto: C standard library, C++ standard library, C language reference

H

headers, hashing, heap algorithms, if/ifdef/ifndef: C preprocessor and macros, C standard library, C++ standard library, C language reference

I

if, import, include, inline, int, iterator, invoke, ios, iostream: C language reference, C preprocessor and macros, C++ language reference, C++ standard library

J

jthread: C++ concurrency library

K

keywords: C language reference, C++ language reference

L

latch, length_error, list, locale, logic_error, long: C++ concurrency library, Standard exceptions and errors, C++ containers and views, C language reference, C standard library

M

malloc, map, mdspan, memcpy, memory, module, move, mutex: C standard library, C++ containers and views, C++ standard library, C++ language reference, C++ concurrency library

N

namespace, new, noexcept, nullptr, numeric, numbers: C++ language reference, C++ algorithms and ranges, C++ numerics and time

O

operator, optional, or, ostream, out_of_range, overflow_error: C++ language reference, C++ standard library, Operators and punctuators, Standard exceptions and errors

P

pair, path, pragma, predicate, print, printf, promise, protected, public: C++ standard library, C preprocessor and macros, C standard library, C++ language reference, C++ concurrency library

Q

qsort, queues: C standard library, C++ containers and views

R

ranges, reference_wrapper, regex, reinterpret_cast, requires, restrict, return, runtime_error: C++ algorithms and ranges, C++ standard library, C++ language reference, C language reference, Standard exceptions and errors

S

scanf, semaphores, set, shared_mutex, size_t, span, source_location, static, static_cast, string, string_view, struct, switch, system_error: C standard library, C++ concurrency library, C++ containers and views, C++ standard library, C language reference, C++ language reference, Standard exceptions and errors

T

template, thread, thread_local, throw, time, tuple, type_traits, typeid, typename: C++ language reference, C++ concurrency library, C++ standard library, C standard library, C++ numerics and time

U

union, unique_ptr, unordered_map, unordered_set, unexpected, underflow_error, using, utility: C language reference, C++ language reference, C++ containers and views, C++ standard library, Standard exceptions and errors

V

va_list, valarray, variant, vector, virtual, visit, void, volatile: C standard library, C++ standard library, C++ containers and views, C++ numerics and time, C language reference, C++ language reference

W

while, weak_ptr, wchar_t: C language reference, C++ language reference, C++ standard library, C++ containers and views

X

xor, xor_eq: C++ language reference, Operators and punctuators

Y

language keywords beginning with y are rare in standard C and C++; use the broader language reference pages and C++ language reference.

Z

zero-cost abstractions, zero initialization, and z-prefixed names appear mostly as conceptual topics rather than standard keywords. Use the broader reference section and the language pages for the surrounding vocabulary.

Notes

This page is a map, not a normative standard.
When a name exists in both C and C++, always confirm the exact header, namespace, and overload family before using it.

Example in practice

#include <vector>
#include <string_view>

int main() {
    std::vector<std::string_view> headers{"<vector>", "<ranges>", "<format>"};
    return static_cast<int>(headers.size());
}