第二题

#include <iostream>using namespace std;class Student{public:  void get_value()   {cin>>num>>name>>sex;}  void display( )    {cout<<"num: "<<num<<endl;     cout<<"name: "<<name<<endl;     cout<<"sex: "<<sex<<endl;} private :   int num;   char name[10];   char sex;};   class Student1: private Student {public:   void get_value_1()    {get_value();     cin>>age>>addr;}   void display_1()       {display();       cout<<"age: "<<age<<endl;               cout<<"address: "<<addr<<endl;}      private:       int age;    char addr[30]; };int main() {Student1 stud1;  stud1.get_value_1();  stud1.display_1();  return 0;}