理解c++对象模型，子类与父类关系

#include <iostream>using namespace std;class base{public:    int bval;    base()    {        bval = 0;    }};class deri:public base{public:    int dval;    deri(){dval = 1;};};void SomeFunc( base *arr,int size){    for ( int i = 0; i < size;i++,arr++)    {        cout << arr->bval<<"|";    }    cout <<endl;}int main(){    base BaseArr[5];    SomeFunc(BaseArr,5);    deri DeriArr[5];    SomeFunc(DeriArr,5);    return 1;}