C keywords: extern

 

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Keywords

alignas (哋它亢23) alignof (哋它亢23) auto bool (哋它亢23) break case char const constexpr (哋它亢23)     continue default do double else enum	extern false (哋它亢23) float for goto if inline (哋它亢99) int long nullptr (哋它亢23) register restrict (哋它亢99)     return short signed	sizeof static static_assert (哋它亢23) struct switch thread_local (哋它亢23) true (哋它亢23) typedef typeof (哋它亢23) typeof_unqual (哋它亢23)     union unsigned void volatile while	_Alignas (哋它亢11) _Alignof (哋它亢11) _Atomic (哋它亢11) _BigInt (哋它亢23) _Bool (哋它亢99) _Complex (哋它亢99) _Decimal128 (哋它亢23) _Decimal32 (哋它亢23) _Decimal64 (哋它亢23) _Generic (哋它亢11) _Imaginary (哋它亢99) _Noreturn (哋它亢11*) _Static_assert (哋它亢11*) _Thread_local (哋它亢11)
conditionally-supported
asm	fortran

 

Usage

• static duration storage-class specifier with either internal or more usually external linkage.