#include <functional>
#include <iostream>

class Foo {
public:
    void mytype() {
        std::cout << typeid(decltype(this)).name() << std::endl;
    }
    virtual void hi() {
    }
};

class Bar : public Foo {
};

int main() {
    Foo f;
    f.mytype();

    Bar b;
    b.mytype();
}