Enum variable default value?

The question is simple:

#include <iostream>

enum SomeEnum {  
    EValue1 = 1,  
    EValue2 = 4
};

int main() {
    SomeEnum enummy;
    std::cout << (int)enummy;
}

What will be the output?

Note: This is not an interview, this is code inherited by me from previous developers. Streaming operator here is just for example, actual inherited code doesn't have it.