Question

What happens if we use the enum name as a function in c++? To elaborate, let me put the following code snippet

enum check{
    HELLO,
    HI,
    HOWDY,
    SALAM,
    SALOM,
    STOP
};

void main() {
    int p  = check();
    cout<<p;
}

I could assume it may be invoking the default constructor in case of a class or structure, but what happens with an enum?

And if it is some sort of a construtor-like method, does it return 0 ? because ‘p’ was set to 0.

Answer 1

It uses a value-initialized (just like a class or a struct) check to copy-initialize the int, and it returns 0.

And to be clear, you’re not using it as a function, that’s the syntax for value-initialization.

Just like

int p = int();

isn’t using the type int as a function.