C++ function overriding

Question

I have three different base classes:

class BaseA
{
public:
    virtual int foo() = 0;
};

class BaseB
{
public:
    virtual int foo() { return 42; }
};

clas         


        

Answer 1

It mostly depends on how you called it.

if you did:

class Child : public BaseA
{
public:
    int foo() { return 42; }
};

and did

BaseA baseA = new Child();
baseA->foo();

It would call Child's foo function.

However, if you did this:

BaseA baseA = new BaseA();

It would produce a compile time error.