#include <iostream>
using namespace std;
class Student
{
public:
Student(int n,double s):num(n),score(s){}
void display();
int getNum(){return num;}
double getScore(){return score;}
private:
int num;
double score;
};
void Student::display()
{
cout<<num<<" "<<score<<endl;
}
int max_1(Student *arr);
int max_2(Student arr[]);
int main()
{
Student stud[5]={
Student(101,78.5),Student(102,85.5),Student(103,100),
Student(104,98.5),Student(105,95.5)};
Student *p;
cout<<"方式一"<<endl;
for(int i=0;i<5;i+=2)
{
cout<<"学生"<<i+1<<": ";
p=&stud[i];
(*p).display();
}
cout<<"5个学生中成绩最高者的学号为: "<<max_1(stud)<<endl;
void (Student::*q)();
cout<<"方式二"<<endl;
for(int j=0;j<5;j+=2)
{
cout<<"学生"<<j+1<<": ";
q=&Student::display;
(stud[j].*q)();
}
cout<<"5个学生中成绩最高者的学号为: "<<max_2(stud)<<endl;
return 0;
}
int max_1(Student *arr)
{
double max1=arr[0].getScore();
int k=0;
for(int i=1;i<5;i++){
if(arr[i].getScore()>max1)
{
max1=arr[i].getScore();
k=i;
}
}
return arr[k].getNum();
}
int max_2(Student arr[])
{
double max1=arr[0].getScore();
double (Student::*p)();
int k=0;
for(int i=1;i<5;i++){
p=&Student::getScore;
if((arr[i].*p)()>max1)
{
max1=(arr[i].*p)();
k=i;
}
}
return arr[k].getNum();
}
运行结果: