填空题

如下程序执行后的输出结果是 【14】 。
#include ＜iostream＞
using namespace std;
class Base
public:
Base(int x,int y)

a=x;
b=y;

void Show()

cout＜＜"Base: "＜＜a＜＜ ’,’ ＜＜b＜＜" ";

private:
int a,b;
;
class Derived : public Base
public:
Derived(int x, int y, int z) : Base(x,y),c(z)
void Show()

cout＜＜"Derived:"＜＜c＜＜end1;

private:
int c;
;
int main()
Base b(100,100),*pb;
Derived d(10,20,30);
pb=&b;
pb-＞Show();
pb=&d;
pb-＞Show();
return 0;