5-4

#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;   }protected:int num;char name[10];char sex;};class Student1:public Student{public:void getvalue(){     get_value(); cin>>age>>addr;}void show(){ cout<<"num:"<<num<<endl; cout<<"name:"<<name<<endl; cout<<"sex:"<<sex<<endl; cout<<"age:"<<age<<endl; cout<<"address:"<<addr<<endl;}private:int age;char addr[10];};int main(){ Student1 stud; stud.getvalue(); stud.show(); return 0;}