C++ identifier with special meaning: override
(since C++11)
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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. };