第七题第五小题

#include <iostream> 
using namespace std; 
class Student 
 {public: 
   Student(int n,float s):num(n),score(s){} 
   void change(int n,float s) {num=n;score=s;} 
   void display() {cout<<num<<" "<<score<<endl;} 
  private: 
   int num; 
   float score; 
 };  
int main() 
{Student stud(101,78.5); 
 Student * const p=&stud; 
 p->display(); 
 p->change(101,80.5); 
 p->display(); 
 return 0; 
}