先上代码：
#include <iostream.h>
        class Base {
        public:
          Base(){ a=0;cout<<"Base缺省构造函数\n"; }
          Base(int i){ a=i;cout<<"Base带参构造函数\n"; }
          void print(){ cout<<"a="<<a<<","; }
          int Geta(){ return a; }
        private:
          int a;
        };
        class Derived:public Base {
        public:
          Derived(){ b=0;cout<<"Derived缺省构造函数\n"; }
Derived (int i,int j,int k);
          void print();
        private:
          int b;
          Base Ba;                      //子对象或称为内嵌对象
        };
        Derived::Derived(int i,int j,int k):Base(i), Ba(j),b(k)
  { cout<<"Derived带参构造函数\n"; }
        void Derived::print()
        {  Base::print();              //调用基类Base的print()函数
cout<<"b="<<b<<",Ba.a="<<Ba.Geta()<<endl;
        }
        void main()
        {  Derived d1,d2(5,3,7);
d1.print();  d2.print();
        }
运行结果如何？