c++ - 用子类初始化父类的问题

Question

用子类初始化父类的意义什么？

Answer 1

When a subclass initializes a parent class, does it mean that the subclass calls the constructor or does it mean that the subclass inherits the parent class?
I didn’t read too many questions

Answer 2

Is the question asking about the initialization of A* p =new B?