Editing C syntax (section)

===Reserved keywords===
The following words are [[reserved word|reserved]], and may not be used as identifiers:

{{col-begin}}
{{col-break|width=20%}}
:{{mono|_Alignas}}
:{{mono|_Alignof}}
:{{mono|_Atomic}}
:{{mono|auto}}
:{{mono|_Bool}}
:{{mono|break}}
:{{mono|case}}
:{{mono|char}}
:{{mono|_Complex}}
:{{mono|const}}
:{{mono|continue}}
:{{mono|default}}
:{{mono|do}}
{{col-break|width=20%}}
:{{mono|double}}
:{{mono|else}}
:{{mono|enum}}
:{{mono|extern}}
:{{mono|float}}
:{{mono|for}}
:{{mono|_Generic}}
:{{mono|goto}}
:{{mono|if}}
:{{mono|_Imaginary}}
:{{mono|inline}}
{{col-break|width=20%}}
:{{mono|int}}
:{{mono|long}}
:{{mono|_Noreturn}}
:{{mono|register}}
:{{mono|restrict}}
:{{mono|return}}
:{{mono|short}}
:{{mono|signed}}
:{{mono|sizeof}}
:{{mono|static}}
:{{mono|struct}}
{{col-break}}
:{{mono|switch}}
:{{mono|_Thread_local}}  <!-- new in C23 thread_local, seems its replacement -->
:{{mono|typedef}}
:{{mono|union}}
:{{mono|unsigned}}
:{{mono|void}}
:{{mono|volatile}}
:{{mono|while}}
{{col-end}}

Implementations may reserve other keywords, such as {{code|asm}}, although implementations typically provide non-standard keywords that begin with one or two underscores.