... cout << "Using a constructor to reset an object\n"; stock1 = Stock("Nifty Foods",10 , 50.0); cout << "Revised stock1: \n"; stock1.show(); cout << "Done\n"; ... 输出结果：

Using a constructor to reset an object

Constructor using Nifty Foods called

Bye~, Nifty Foods!          //注意这里是析构了临时对象，临时对象是由于stock1 = Stock("Nifty Foods", 10, 50.0 );创建的。

Revised stock1:

Company: Nifty Foods Shares: 10

Share Price: $ 50.000 Total Worth: $500.00

Done

stock1 = Stock("Nifty Foods",10 , 50.0); 先创建了临时对象，将值赋予该临时对象，再将临时对象的值赋予stock1。