1271面向对象程序设计上机练习九（对象指针）

#include<iostream>
#include<cstring>
using namespace std;
int a,b,c;
class student
{
public :
int get()
{
cin>>num>>score;
}
string  shownum()//类内的学号和成绩都是私有的  不能直接在外面调用
{//通过一个与外部连接的函数，把类中私有的数据传出去
return num;
}
int showscore()
{
return score;
}
private:
string num;
int score;

};
void Max (student *s)
{
int m=0;
int n;
for(int i=0;i<5;i++)
{
if(s[i].showscore()>m)
{
m=s[i].showscore();
n=i;
}
}
cout << s
.shownum() << " " << m << endl;
}
int main()
{
student stud[5],*p;
p=&stud[0];
for(int i=0;i<5;i++)
{
stud[i].get();
//p[i].get(); 1
}
Max(stud);
//Max(p); 2
}//1 2为引用函数的使用

#include <iostream>

using namespace std;

class student
{
public:
char no[100];
int score;
};

student a[5];

void max(student *&p)
{
int i;
int max=a[0].score;
for(i=1; i<5; i++)
{
if(a[i].score > max)
{
max=a[i].score;
p = &a[i];
}
}
}

int main()
{
int i;
for(i=0; i<5; i++)
cin>>a[i].no>>a[i].score;

student *p=&a[0];
max(p);

cout<<p->no<<" "<<p->score<<endl;
return 0;
}

#include <iostream>
#include <string.h>

using namespace std;

class Stu
{
private:
string num;
int sorce;
public:
Stu(){}
Stu(string a,int b):num(a),sorce(b){}
void max(Stu *p,int n)
{
Stu *q = p;
sorce = p[0].sorce;
num = p[0].num;
for(int i = 1;i < n;i++)
{
if(sorce < q->sorce)
{
sorce = q->sorce;
num = q->num;
}
q++;
}
}
void show()
{
cout<<num<<" "<<sorce<<endl;
}
};
int main()
{
Stu *p = new Stu[5];
Stu *q = p;
Stu *mx;
int n = 5,b;
string a;
for(int i = 0;i < n;i++)
{
cin>>a>>b;
*q = Stu(a,b);
q++;
}
mx->max(p,n);
mx->show();
return 0;
}