---------CopyConstructor.ccの出力結果------------------------------

-------object construction with default argument------
default constructor: no name car
number, gas =no name car, 0
-------object construction with input arguments-----
constructor: this is mycar.
number, gas =this is mycar. , 90.2349
-------object copy via copy constructor--------
copy constructor is operated here
dynamic object :copy of this is mycar.  created
number, gas =copy of this is mycar. , 90.2349
-------object copy via assignment--------
default constructor: no name car
assignment operator activated here:
number, gas =copy of copy of this is mycar. , 90.2349
-------------end of job----------------
destructor done:copy of copy of this is mycar.
destructor done:copy of this is mycar.
destructor done:this is mycar.
destructor done:no name car