试谈C++的多态性和虚函数

Discussion on Polymorphism and Virtual Function in C++ Language

本文分析了C++中的两种多态性:编译时的多态性和运行时的多态性,通过函数重载和虚函数对其进行了探讨,指出了虚函数是实现动态联编的关键。

This article analyses two kinds of polymorphism： polymorphism in compiling and polymorphism in running. It argues the two kinds d polymorphism through function overloading and virtual function and points out that virtual function is the crucial technology of realizing dynamic binding.