C++习题-使用对象的引用[3.8]

#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;
    }
    
    void fun(Student &p,int n,float s)
    {
         p.change(n,s);
         p.display();
    }
    
    private:
    int num;
    float score;
};

int main()
{
    Student stud(101,78.5);
    Student stud1(101,11.8);
    Student * const p = &stud;
    //p = &stud1; 编译报错，因此指向对象的常指针，不能更改已经指向的对象

    p->display();
    p->fun(stud,101,80.5);
    
    system("pause");
    return 0;
}