Question

编写程序:基类base,有一个私有数据成员n,派生类Derived公有继承基类base,Derived,要求程序的运行结果如下

编写程序：基类base，有一个私有数据成员n，派生类Derived公有继承基类base，Derived中新增加一个数据成员m，要求程序的运行结果如下：

Answer 1

#include <iostream>
using namespace std;
class base
{
      private:
              int n;
      public:
             base()
             {
                   n=26;
                   cout<<"constructing base"<<endl;
                   cout<<"n="<<n<<endl;
             }
             ~base()
             {
                    cout<<"destructing base"<<endl;
             }
};
class Derived: public base
{
      private:
              int m;
      public:
             Derived()
             {
                   m=38;
                   cout<<"constructing Derived"<<endl;
                   cout<<"m="<<m<<endl;
             }
             ~Derived()
             {
                    cout<<"destructing Derived"<<endl;
             }
};
int main() 
{ 
     Derived D;    
     return 0; 
}

 已经测试过了，测试结果如下：（有问题可以继续追问）