抽象类是否可以作为其他具体类的成员构成关系? C ++ [英] Can an abstract class be member of other concrete class as composition relationship ? c++

问题描述

P是一个抽象类，我想使其成为类A的成员，后者是普通的具体类.如果可以的话，有可能吗?关系是组成 感谢您的帮助

P is an abstract class, I want to make it member of class A which is a normal concrete class. Is it possible if yes how. Relationship is composition Thanks for help

推荐答案

由于P是抽象的，因此您永远无法创建该类型的对象.但是，您可以将指向P的指针存储为类A的成员.然后，该指针成员可以指向P的(具体)子类的实例.

Since P is abstract, you can never create an object of that type. However, you can store a pointer to P as a member of class A; this pointer member could then point to an instance of a (concrete) subclass of P.

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