有以下程序
#include ＜iostream＞
using namespace std;
class Base
int a;
public:
Base(int x){ a=x;}
void show(){cout＜＜a; }
};
class Derived: public Base
{
int b;
public:
Derived(int i):Base(i+1),b(i) { }
void show(){ cout＜＜b; }
};
int main()
{
Base b(5),*pb;
Derived d(1);
pb=&d;
pb-＞show();
return 0;
}
运行后的打印结果是 【14】 。