对象数组&&父类强制转换为子类

#include<stdio.h>
#include<stdlib.h>

class base
{
public:
    int type;
    char * name;
    int data;
    virtual ~base(){};
    base(){printf("hello wrold!\n");}
};

class child:public base
{
public:
    int my;
    void show()
    {
        printf("hello \tworld!,child!!!\n");
    }
};

int main()
{
    base base1;
    base base2;
    base baseTable[2]={base1,base2};
    dynamic_cast<child *>(&baseTable[1])->show();
    return 1;
}