C++ identifier with special meaning: override (since C++11)
From cppreference.com
< cpp
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
Special member functions
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)
(C++11)
(C++11)
Identifiers with special meaning
[edit] Usage
- override specifier
[edit] Example
struct b { void f0() {}; void f1() {}; virtual void f2() {}; virtual void f3() {}; virtual void f4() {}; virtual void f5() {}; }; struct d : b { void f0() {}; // OK. Neither: b::f0 nor d::f0 are virtual. void f1() override {}; // Error: cannot override non-virtual b::f1. void f2() override {}; // OK. Member function d::f2 is virtual. virtual void f3() {}; // OK. Specifier 'override' is optional. virtual void f4() override {}; // OK. 'override' ensures b::f4 is virtual. virtual void f5() override final {}; // OK. d::f5 is both overriden and final. };