Can enum class be nested?

Question

Can this be done?

enum A
{
    enum B
    {
        SOMETHING1,
        SOMETHING2
    };

    enum C
    {
        SOMETHING3,
        SOMETHING4
    };
};
         


        

Answer 1

No, they cannot be nested that way. In fact, any compiler would reject it.

If not is there an alternative solution?

That mostly depends on what you are trying to achieve (solution to what problem?). If your goal is to be able to write something like A::B::SOMETHING1, you could just define them within a namespace, this way:

namespace A
{
    enum B
    {
        SOMETHING1,
        SOMETHING2
    };

    enum C
    {
        SOMETHING3,
        SOMETHING4
    };     
}