10.C++類大小的計算及多態、虛函數實現原理

類大小計算的基本規則https://blog.csdn.net/fengxinlinux/article/details/72836199
虛繼承的類大小計算https://www.cnblogs.com/simonote/articles/3145965.html
虛基類表與虛函數表https://blog.csdn.net/bxw1992/article/details/77726390
圖解虛函數表https://blog.csdn.net/linyt/article/details/51811314
虛繼承的內存佈局https://blog.csdn.net/xiejingfa/article/details/48028491
虛函數實現原理https://blog.csdn.net/weixin_40237626/article/details/82313339
多態性的解釋https://blog.csdn.net/Hackbuteer1/article/details/7475622