u010117867的博客

1.子类重载父类public虚函数，并设置访问属性为private，多态仍然生效，可以访问子类虚函数，见下面func()2.父类public成员，子类private继承后变成private，通过public下的using声明，可以重置为public，见下面成员a#include <iostream> #include <string> #include <vector...

dynamic_cast < type-id > ( expression )If type-id is void*, a run-time check is made to determine the actual type of expression. The result is a pointer to the complete object pointed to by expr...