C++ Keywords

This blog post will teach you about C++ keywords (reserved words in C++ programming). We will list out almost famous C++ keywords and their examples. Let’s first understand what C++ keyword is.

Keywords are predefined reserved identifiers that have special meanings. And because they are reserved by the language, these keywords are not available for re-definition or overloading. In simple words, you can not use keywords as identifiers in your program.

For example,

int while;

Here, int and while both are keywords but in the above example, you are trying to use while as an identifier. You will get the compiler error.

Standard C++ keywords:

The following is the list of keywords used in C++ programming. The meaning of the few keywords is updated in different versions of C++.

A – C	D – P	R – Z
`alignas` (since C++11) `alignof` (since C++11) `and` `and_eq` `asm` `atomic_cancel` (TM TS) `atomic_commit` (TM TS) `atomic_noexcept` (TM TS) `auto` `bitand` `bitor` `bool` `break` `case` `catch` `char` `char8_t` (since C++20) `char16_t` (since C++11) `char32_t` (since C++11) `class` (1) `compl` `concept` (since C++20) `const` `consteval` (since C++20) `constexpr` (since C++11) `constinit` (since C++20) `const_cast` `continue` `co_await` (since C++20) `co_return` (since C++20) `co_yield` (since C++20)	`decltype` (since C++11) `default` `delete` `do` `double` `dynamic_cast` `else` `enum` `explicit` `export` `extern` `false` `float` `for` `friend` `goto` `if` `inline` `int` `long` `mutable` (1) `namespace` `new` `noexcept` (since C++11) `not` `not_eq` `nullptr` (since C++11) `operator` `or` `or_eq` `private` `protected` `public`	`reflexpr` (reflection TS) `register` `reinterpret_cast` `requires` (since C++20) `return` `short` `signed` `sizeof` `static` `static_assert` (since C++11) `static_cast` `struct` `switch` `synchronized` (TM TS) `template` `this` `thread_local` (since C++11) `throw` `true` `try` `typedef` `typeid` `typename` `union` `unsigned` `using` (1) `virtual` `void` `volatile` `wchar_t` `while` `xor` `xor_eq`

Note: The register keyword is unused but is reserved for future use.

C++ also has some identifiers with special meanings, which may be used as names of objects or functions, but have special meanings in certain contexts. These are the following.

final (C++11)
override (C++11)
transaction_safe (TM TS)
transaction_safe_dynamic (TM TS)
import (C++20)
module (C++20)

Standard C++ keywords:

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