A级{ 私人: 虚拟空虚my_function(); } 级B:公共A { 私人: void my_function(); } 我是否可以通过 声明它是公共函数来提高classB中my_function的可见性? 答案取决于我如何从classB继承classA (即公开, 受保护,私有)?
解决方案s写道: A类{私人:虚拟空洞my_function(); } B类:公共A {私人: void my_function(); } 我是否允许通过声明它是公共函数来提高classB中my_function的可见性? 是。 答案取决于我如何从classB继承classA(即 public,protected,private)?
No.
" s" < youshouldbe @家>在消息新闻中写道:3FFDC248.5070204@home ... A类{私人:虚拟空虚my_function(); } B级:公共A {私人: void my_function(); } 我是否可以通过<增加classB中my_function的可见性声明它是一个公共功能? 当然。您有什么想法可能阻止您? 答案取决于我如何从classB继承classA(即public, protected,private)?
是的 - 如果B使用私有的 继承,你将无法从外部访问它。
2004年1月8日星期四16:08:59 -0500,jeffc写道:
答案取决于我如何从classB继承classA (即公开,保护,私有)?是的 - 如果B使用私有继承,你将无法从外部访问它。
不,classA将无法访问classB的用户,但这与问题无关。 HTH, M4
class A { private: virtual void my_function(); } class B : public A { private: void my_function(); } Am I allowed to increase the visibility of my_function in classB by declaring it a public function? Does the answer depend on how I inherit classA from classB (i.e. public, protected, private)?
解决方案 s wrote: class A { private: virtual void my_function(); } class B : public A { private: void my_function(); } Am I allowed to increase the visibility of my_function in classB by declaring it a public function? Yes. Does the answer depend on how I inherit classA from classB (i.e. public, protected, private)?No.
"s" <youshouldbe@home> wrote in message news:3FFDC248.5070204@home... class A { private: virtual void my_function(); } class B : public A { private: void my_function(); } Am I allowed to increase the visibility of my_function in classB by declaring it a public function? Of course. What do you have in mind that might be stopping you? Does the answer depend on how I inherit classA from classB (i.e. public, protected, private)?Yes - you won''t be able to access it externally if B uses private inheritance.
On Thu, 08 Jan 2004 16:08:59 -0500, jeffc wrote: Does the answer depend on how I inherit classA from classB (i.e. public, protected, private)?Yes - you won''t be able to access it externally if B uses private inheritance.
No, classA will not be accessable to users of classB, but that is irrelevant for the question. HTH, M4
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