是否可以在C++中创建方法调用调度程序？

void foo() {
    cout << "foo"<< endl;
}

void bar() {
    cout << "bar"<< endl;
}

int main() {
    void (*func)();
    func = foo;
    func();
    func = bar;
    func();
    return 0;
}

class Base {
public:
    virtual void foo() {
        cout << "Base::foo"<< endl;
    }
};

class Derived : public Base {
public:
    void foo() override {
        cout << "Derived::foo"<< endl;
    }
};

int main() {
    Base* p = new Derived();
    p->foo();
    delete p;
    return 0;
}

void foo(function<void()> callback) {
    cout << "foo"<< endl;
    callback();
}

void bar() {
    cout << "bar"<< endl;
}

int main() {
    foo(bar);
    return 0;
}