Question

Suppose I have a 2 classes:

struct a
{
    void test();
};

struct b
{
    void test();
};

Now let’s inherit from those classes:

class c : public a, public b
{
};

Calling c::test() will generate an error, since class a and class b have the same function void test(), now my question:

Is it possible to inherit those (non-virtual!) functions, and when c::test() is called both are executed?

Answer 1

To do this, you need to implement void test() in c, and call both methods. There’s no automatic way to do it.

class c : public a, public b
{
public:
    void test() {
        a::test();
        b::test();
    }
}

However, I would strongly discourage you from reimplementing non-virtual functions in derived classes. The problem is that the following would quietly call different functions, even though they operate on the same object:

   c* p1 = new c();
   a* p2 = p1;
   p1->test();
   p2->test();