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Inheritance and re-writing functions

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If I have a class that inherits from another with virtual functions, if I intend to re-write those functions in the derived class to have the more specialized functionality, do I have to put the function prototypes of the derived functions in the derived class declaration?

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Yes. The following code will give you a compile error


class A {
public:
virtual int foo() {
return 5;
}
};

class B : public A { };

int B::foo() {
return 6;
}

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