Details c++11 final and override specifiers

As shown below:

Final,override appears after the parameter list and the wake return type # include <iostream>using namespace std;struct b{    virtual void F1 (int) const;    virtual void F2 (int);    void F3 (int) final;//error, final cannot decorate non-virtual function};struct d:b{    void F1 (int) const override;//removing const will make an error and must be consistent with the function prototype in the base class. Otherwise, you cannot overwrite    void F2 (int) with override to indicate that a derived class that inherits D cannot overwrite the function    void F3 ();}; struct e:b{    void F2 (int),//ok, whose direct base class B does not have a final specifier};struct f:d{    void F2 (int);//error, cannot overwrite this function, The reason is that there is a final specifier in the direct base class D};

Final indicates that the virtual function cannot be overridden, and override indicates that the function overrides a virtual function

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