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. As an exception, they are not considered reserved in attributes (excluding attribute argument lists).(since C++11) alignas (C++11) alignof (C++11) and and_eq asm atomic_cancel (TM TS) atomic_commit (TM TS) atomic_noexcept (TM TS) auto (1) (2) (3) (4) b