C++ keywords

From Cppreference

C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++11) Atomic operations library (C++11) Thread support library (C++11)
C++ language
C++ keywords
and and_eq alignas alignof asm auto bitand bitor bool break case catch char char16_t char32_t class compl const constexpr const_cast continue decltype default delete double dynamic_cast else enum explicit export extern false float for friend goto if inline int long mutable namespace new noexcept not not_eq nullptr operator or or_eq private protected public register reinterpret_cast return short signed sizeof static static_assert static_cast struct switch template this thread_local throw true try typedef typeid typename union unsigned using virtual void volatile wchar_t while xor xor_eq

This is a list of reserved keywords in C++. Since they are used by the language, these keywords are not available for re-definition or overloading.

and and_eq alignas (C++11 feature) alignof (C++11 feature) asm auto(1) bitand bitor bool break case catch char char16_t(C++11 feature) char32_t(C++11 feature) class compl const constexpr(C++11 feature) const_cast continue decltype(C++11 feature) default(1) delete(1) double dynamic_cast else

enum explicit (todo) export extern (todo) false float for friend goto if inline int long mutable namespace new noexcept(C++11 feature) not not_eq nullptr (C++11 feature) operator or or_eq private protected public register reinterpret_cast

return short signed sizeof static static_assert(C++11 feature) static_cast struct switch template this thread_local(C++11 feature) throw true try typedef typeid typename union unsigned using(1) virtual void volatile wchar_t while xor xor_eq

• (1) - meaning changed in C++11

Note that and, bitor, or, xor, compl, bitand, and_eq, or_eq, xor_eq, not, and not_eq (along with the digraphs <%, %>, <:, :>, %:, and %:%:) provide an alternative way to represent standard tokens.