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