Class is inherited, the constructor and destructor call order

For example, the Apple class is a subclass of the fruit class, and when Apple A ("Red Fuji") is executed, the constructor of the fruit class is called before the constructor of the Apple class is called

Similarly, assume that two Apple instances have been declared in the program:

Apple A ("Red Fuji");

Apple B ("green banana");

When the function exits, destroy B before destroying a (because B is at the top of the stack).

When the destructor is called, the destructor of Apple is called first, and then the destructor of fruit is called.

As you can see, the sequence of calls to constructors and destructors is exactly reversed.

Both Java and C + + are such a rationale.

Class is inherited, the constructor and destructor call order