Re: Does object have function?

This would work:

class Base {
public:
? ?virtual ~Base() {}

};

class Fooer {
public:
? ?virtual void foo() = 0;

};

class DerivedOne : public Base, public Fooer {
public:
? ?void foo() { cout << "DerivedOne::foo()\n"; }

};

class DerivedTwo : public Base, public Fooer {
public:
? ?void foo() { cout << "DerivedTwo::foo()\n"; }

};

class DerivedThree: public Base {

};

int main() {
? ?Base* bps[3];
? ?bps[0] = new DerivedOne();
? ?bps[1] = new DerivedTwo();
? ?bps[2] = new DerivedThree();

? ?for ( int i = 0; i < 3; ++i ) {
? ? ? Fooer* thisOne = dynamic_cast<Fooer*>( bps[i] );
? ? ? if ( thisOne )
? ? ? ? ?thisOne->foo();
? ?}

}