在前面的例子中，派生类都只有一个基类，称为单继承（Single Inheritance）。除此之外，C++也支持多继承（Multiple Inheritance），即一个派生类可以有两个或多个基类。
In Visual Studio, I always use Ctrl+Tab and Ctrl+Shift+Tab to navigate between documents. I see that Eclipse has Ctrl+F6 to navigate between editors, but this isn\'t nearly the same behavior. The diff
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