struct Derived : public Base
{
virtual void print() {cout << "Derived" << endl;}//虚函数在继承时,父类中加关键字virtual,子类中不必加
};
没区别,除了 默认的不同罢了
2006-09-25 17:35
2006-09-25 18:55
2006-09-30 08:35
2007-04-04 16:23