19. Срезка и полиморфизм

#include <iostream>

class base
{
public:

    virtual void foo()
    {
        std::cout << "base" << std::endl;
    }
};

class derived : public base
{
public:

    virtual void foo()
    {
        std::cout << "derived" << std::endl;
    }
};

void foo(base bs)
{
    bs.foo();
}

int main()
{
    base bs = derived();

    bs.foo();

    foo(derived());

    return 0;
}