C++ keyword: extern
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C++
Feature test macros (C++20)
Concepts library (C++20)
Metaprogramming library (C++11)
Ranges library (C++20)
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
C++ language
General topics
Conditional execution statements
Iteration statements (loops)
Jump statements
Dynamic exception specifications (until C++17*)
noexcept specifier (C++11) Exceptions
Namespaces
Types
Specifiers
User-defined (C++11)
Utilities
Attributes (C++11)
Types
Type alias declaration (C++11)
Casts
Memory allocation
Class-specific function properties
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Miscellaneous
Keywords
(C++11)
(C++11)
(*)
(C++20)
(C++11)
(C++11)
(C++20)
(C++20)
(C++11)
(C++20)
(C++26)
(C++20)
(C++20)
(C++20)
(C++11)
extern
(C++11)
(C++11)
Identifiers with special meaning
[edit] Usage
- explicit template instantiation declaration (or "extern template")