This function can be used to return the name of the specified room as a string. Please note that this is only a string and cannot be used to reference the room directly - for that you would need the room index. You can, however, use this string to get the room index using the returned string along with the function asset_get_index().
Argument Description index The index of the room to check the name of.
var roomname = room_get_name(room);
draw_text(32, 32, roomname);
The above code will get the name of the current room and draw it on the screen.