Question

C++题目：主要是用指向对象的指针做函数参数，不知道怎么做，题目如下。

建立一个对象数组，内放5个学生的数据（学号，成绩），设立一个max函数，用指向对象的指针做函数参数，在max函数中找出5个学生中成绩最高者，并输出其学号。

Answer 1

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

using namespace std;

#define STUDENTNUM 5

class Student
{
public:
Student() {}
Student(double score, unsigned int num, string name);
double GetScore();
unsigned int GetNum();

private:
double m_dScore;
unsigned int m_iNum;
string m_strName;
};

Student::Student(double score, unsigned int num, string name)
{
m_dScore = score;
m_iNum = num;
m_strName = name;
}

double Student::GetScore()
{
return m_dScore;
}

unsigned int Student::GetNum()
{
return m_iNum;
}

unsigned int GetMaxScore(Student *st)
{
int MaxScoreIndex = 0;

for(int i = 0; i < STUDENTNUM - 1; i++)
{
int Max = ((st + i)->GetScore()) > ((st + i + 1)->GetScore()) ? i : (i + 1);

MaxScoreIndex = ((st + MaxScoreIndex)->GetScore()) > ((st + Max)->GetScore()) ? MaxScoreIndex : Max;
}

return (st + MaxScoreIndex)->GetNum();
}
void main()
{
Student StuInfo[5];
StuInfo[0] = Student(100, 1, "zhangsan");
StuInfo[1] = Student(90, 2, "lisi");
StuInfo[2] = Student(80, 3, "lucy");
StuInfo[3] = Student(70, 4, "hanmeimei");
StuInfo[4] = Student(60, 5, "joey");

int Num = GetMaxScore(StuInfo);

cout<<Num<<endl;
}

粗略写了下，希望能看懂。。

Answer 2

刚学c++还在学习

Answer 3

/*包含必要头文件*/

class student
{
int no;
int score;
};

void max(const vector<student> &dat)
{
int max=-1;
int no=-1;
for(vector<student>::const_iterator iter=dat.begin();
iter!dat.end();iter++)
{
if (iter->score>max)
{
max=iter->score;
no=iter->no;
}
}
cout<<"学号"<<no<<endl;
cout<<"成绩"<<max<<endl;

}

int main(void)
{
vector<student> st;
/*初始数据*/
max(st);
return 0;

}