如果用父類指針指向子類對(duì)象，能否訪問(wèn)子類多出來(lái)的數(shù)據(jù)成員或者成員函數(shù)？（除了虛函數(shù)）

例如

class?shape
{
public:
????shape();
????~shape();
};

class?circle:public?shape
{
public:
????circle();
????~circle();
????int?radius;
};

shape?*p?=?new?circle;
cout?<<?p->radius?<<?endl;????????//能否通過(guò)此語(yǔ)句訪問(wèn)circle的radius