C++ Anyway to prevent a method from being over ridden in sub classes?

class Base {
public:
    bool someGuaranteedResult() { return true; }
};

class Child : public Base {
public:
    bool someGuaranteedResult() { return false; /* Haha I broke things! */ }
};

Parent* obj = new Child();

int foo() { return 1; }

int foo() { return 2; }