空类的大小是多少？ [英] what is the size of empty class?

问题描述

c ++中空类的大小是多少，如果该类只包含一个VTABLE那么大小是多少？





请解释一下？



问候，

Ranjith

Hi ,
what is the size of empty class in c++ and if the class contain only one VTABLE then what is the size?


Please explain?

Regards,
Ranjith

推荐答案

int main()
{
    class empty {};
    printf ("Size of empty is %d", sizeof(empty));
    return 0;
}

关于VTable，虚拟析构函数和类似版本 - 谷歌是你的朋友。



希望这有帮助，

Pablo。

About VTable, virtual destructors and similar - google is your friend.

Hope this helps,
Pablo.

是非零，你可能会看到原因，例如：\"Empty Classes[ ^ ]。

Is is non-zero, you may see the reason, for instance, here: "Empty Classes" at MSDN[^].

您花时间更好地学习语言而不是随意发布问题这里。您可以先阅读 Bjarne Stroustrup'网站上的所有内容[ ^ ]。

Your time would be much better spent studying the language in detail rather than randomly posting questions here. You could start by reading everything on Bjarne Stroustrup''s website[^].

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