10 11周阅读程序（2）

#include <iostream>using namespace std;class A{public:    A(){a=0;}    A (int i){a=i;}    void print(){cout<<a<<"  ";}private:    int a;};class B: public A{public:    B(){b=0;}    B(int i, int j, int k): A(i),aa(j){b=k;}    void print()      //(1)    {        A::print();   //(2)        aa.print();   //(3)        cout<<b<<endl;    }private:    int b;    A aa;};int main(){    B test[2];    test[0]=B(1,4,7);    test[1]=B(2,5,8);    for(int i=0; i<2; i++)        test[i].print();    return 0;}结果：1 4 7       2 5 8