C++面向对象程序设计第七章(5)

C++面向对象程序设计

Software Engineering Observation 13.1With virtual functions and polymorphism, you can deal in generalities and let the execution-time environment concern itself with the specifics. You can direct a variety of objects to behave in manners appropriate to those objects without even knowing their types (as long as those objects belong to the same inheritance hierarchy and are being accessed off a common base-class pointer).

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