oj4

#include <iostream>
#include <string>
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;
    string name;
    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:
   string addr;
   int age;
    
};

/* C++代码 */
int main()
{
    Student1 stud1;
    stud1.get_value1();
    stud1.display1();
    return 0;
}