在函数中使用对象的引用

修改下面的程序,增加一个fun函数,改写main函数。在main函数中调用fun函数,在fun函数中调用change和display函数。在fun函数中使用对象的引用( Student &)作为形参。

#include <iostream.h>
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;
}

void main()
{ Student stud(101, 78.5);
stud display( );
stud. change(101, 80.5);
stud display( ):
}

1. 代码

#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 << "  " << num << "  " << score << endl; }
private:
	int num;
	float score;
};
void fun(Student &)
{
Student stud(101, 78.5);
	stud.display();
	stud.change(101, 80.5);
	stud.display();
}
int main()
{
	Student stud(101, 78.5);
	fun(stud);
	return 0;
}

2.运行结果