August 2021
Intermediate to advanced
450 pages
9h 36m
Chinese
Content preview from C++程序设计：原理与实践（基础篇）（原书第2版）
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12.9.2 指针、引用和继承
在19.3节中，我们看到Circle这样的派生类如何被用在需要其公有基类Shape的对象的地方。我们可以用指针或引用来表达这个思想：由于Shape是Circle的一个公有基类，因此Circle*可以被隐式转换为Shape*。例如：
对于引用是类似的：
这是大多数的面向对象的编程技术的关键（见19.3～19.4节）。
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