//14_3

//運行結果為：
create a X object with 1
create a X object with 2     //創建臨時對象
call a func with para X object
create a X object from other X object
erase a object               //析構臨時對象
create a X object from other X object
call a func with para X object
create a X object from other X object
erase a object
erase a object
erase a object
erase a object