Given the above, what is the value of the static class member $\_$num$\_$hats after the following code segment $($which is assumed to be part of a fully functioning program otherwise$)$ executes?

$101|$ Hat hat$1("$wool$")$;

$102|$ Hat hat$2("$wool$")$;

$103|$

$104|$ cout $<<$ "Number of hats created: $"<<$ Hat::get$\_$num$\_$hats$()<<$ endl;