C++ keyword: consteval (since C++20)

 

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const/volatile decltype (C++11) auto (C++11)	constexpr (C++11) consteval (C++20) constinit (C++20)
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Keywords

alignas (C++11) alignof (C++11) and and_eq asm auto (*) bitand bitor bool break case catch char char8_t (C++20) char16_t (C++11) char32_t (C++11) class compl concept (C++20) const consteval (C++20) constexpr (C++11) constinit (C++20) const_cast continue contract_assert (C++26)   co_await (C++20) co_return (C++20) co_yield (C++20) decltype (C++11) default	delete do double dynamic_cast else enum explicit export extern false float for friend goto if inline int long mutable namespace new noexcept (C++11)   not not_eq nullptr (C++11) operator or or_eq private protected public	register reinterpret_cast requires (C++20) return short signed sizeof (*) static static_assert (C++11) static_cast struct switch template this thread_local (C++11) throw true try typedef typeid typename union unsigned using virtual void volatile wchar_t while xor xor_eq
Identifiers with special meaning
final (C++11) import (C++20) module (C++20)	override (C++11) post (C++26) pre (C++26)	replaceable_if_eligible (C++26) trivially_relocatable_if_eligible (C++26)

 

Usage

• consteval declaration specifier
• lambda-declarator that explicitly specifies the function call to be an immediate function

consteval if statement

(since C++23)

Notes

Feature-test macro	Value	Std	Feature
__cpp_consteval	201811L	(C++20)	Immediate functions
	202211L	(C++23) (DR20)	Making consteval propagate up

See also

• if statement: if, else
• constexpr if statement: constexpr (constexpr if statement)
• switch statement: case, default (as the declaration of the default case label), switch
• goto statement: goto
• continue statement: continue
• break statement: break
• return statement: return, co_return
• do-while loop and while loop: do, while
• for loop and range-based for loop: for