有以下程序 #include<iostream> using namespace std; class Base { int a; public: Base(int x){ a=x;} vuid 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】 。