推荐回答（1个）
定义类的时候，在类名后面加上下文关键字final就可以阻止该类被其他类继承。
class CanNotBeDerived final { // 在类名后面添加上下文关键字final
};
class TryToDerive : public CanNotBeDerived { // 错误：CanNotBeDerived不能被继承!
};
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