vtable.cpp

#include <cstdio>

struct Alice
{
    virtual void func()
    {
        printf("ALICE\n");
    }
};

struct Bob : public Alice
{
};

struct Cecil : public Bob
{
    virtual void func()
    {
        Bob::func();
        printf("Cecil\n");
    }
};

int main()
{
    Bob *b = new Cecil;
    b->func();

    return 0;
}