第8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); void fun(Student&); fun(stud); return 0; }void fun(Student &stu){stu.display();stu.change(101,80.5); stu.display();}