C keywords: union

 

C

Compiler support

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Strings library

Algorithms

Numerics

Date and time utilities

Input/output support

Localization support

Concurrency support (C11)

Technical Specifications

Symbol index

 

C language

Basic concepts

Keywords

Preprocessor

Statements

Expressions

Initialization

Declarations

Functions

Miscellaneous

History of C

Technical Specifications

 

Keywords

alignas (C23) alignof (C23) auto bool (C23) break case char const constexpr (C23)   continue default do double else enum	extern false (C23) float for goto if inline (C99) int long nullptr (C23) register restrict (C99)   return short signed	sizeof static static_assert (C23) struct switch thread_local (C23) true (C23) typedef typeof (C23) typeof_unqual (C23)   union unsigned void volatile while	_Alignas (C11*) _Alignof (C11*) _Atomic (C11) _BigInt (C23) _Bool (C99*) _Complex (C99) _Decimal128 (C23) _Decimal32 (C23) _Decimal64 (C23) _Generic (C11) _Imaginary (C99) _Noreturn (C11*) _Static_assert (C11*) _Thread_local (C11*)
conditionally-supported
asm	fortran

 

Usage

• declaration of a union type