编程实现一个student类，管理一个学生的基本信息，包括学生姓名、学号、语文成绩、数学成绩、英语成绩等数据成员，然后在main函数中，从键盘输入得到一个学生的基本信息，最后输出所有数据成员值到屏幕上

编程实现一个student类，管理一个学生的基本信息，包括学生姓名、学号、语文成绩、数学成绩、英语成绩等数据成员，然后在main函数中，从键盘输入得到一个学生的基本信息，最后输出所有数据成员值到屏幕上；
在以上student类的基础上分别用成员函数和友元函数两种形式重载“= =”运算符，判
断二个student对象的成绩是否相等(判定依据是三门平均分)；
在以上student类的基础上分别用成员函数和友元函数两种形式重载“>”运算符，判断
二个student对象的成绩关系。
并在main函数中完成两个对象的“= =”和“>”运算功能。

华东理工大学是吧

试试。

#include <iostream>
using namespace std;
#define EPS 1e-3

class Student
{
    std::string name_;
    std::string no_;
    int chineseScore_;
    int mathsScore_;
    int englishScore_;

public:
    Student() {
        name_ = "";
        no_ = "";
        chineseScore_ = 0;
        mathsScore_ = 0;
        englishScore_ = 0;
    }

    ~Student() {

    }

    void print() {
        cout << "name: " << name_.c_str() << endl;
        cout << "no: " << no_.c_str() << endl;
        cout << "chineseScore: " << chineseScore_ << endl;
        cout << "mathsScore: " << mathsScore_ << endl;
        cout << "englishScore: " << englishScore_ << endl;
    }

    void setName(const std::string& name) {
        name_ = name;
    }

    void setNo(const std::string& no) {
        no_ = no;
    }

    void setChineseScore(int score) {
        chineseScore_ = score;
    }

    void setMathsScore(int score) {
        mathsScore_ = score;
    }

    void setEnglishScore(int score) {
        englishScore_ = score;
    }

    float getAverage() const {
        return (chineseScore_ + mathsScore_ + englishScore_) / 3;
    }

    bool operator == (const Student &c1) const;
    bool operator > (const Student &c1) const;

    /*friend bool operator == (const Student &c1, const Student &c2) ;
    friend bool operator > (const Student &c1, const Student &c2) ;*/

};

bool Student::operator == (const Student &s1) const
{
    return fabs(getAverage() - s1.getAverage()) < EPS;
}

bool Student::operator > (const Student &s1) const
{
    return getAverage() > s1.getAverage();
}

//bool operator == (const Student &s1, const Student &s2)
//{
//    return s1.getAverage() == s2.getAverage();
//}
//
//bool operator > (const Student &s1, const Student &s2)
//{
//    return s1.getAverage() > s2.getAverage();
//}

int main()
{
    char name[255];
    char no[255];
    int chineseScore = 0;
    int mathsScore = 0;
    int englishScore = 0;

    cout << "input：name no chineseScore mathsScore englishScore" << endl;

    // input first student
    cin >> name >> no >> chineseScore >> mathsScore >> englishScore;

    Student s1;
    s1.setName(name);
    s1.setNo(no);
    s1.setChineseScore(chineseScore);
    s1.setMathsScore(mathsScore);
    s1.setEnglishScore(englishScore);
    s1.print();

    // input second student
    cin >> name >> no >> chineseScore >> mathsScore >> englishScore;

    Student s2;
    s2.setName(name);
    s2.setNo(no);
    s2.setChineseScore(chineseScore);
    s2.setMathsScore(mathsScore);
    s2.setEnglishScore(englishScore);
    s2.print();

    // compare two students
    if (s1 == s2) {
        cout << "s1 == s2" << endl;
    }
    else if (s1 > s2) {
        cout << "s1 > s2" << endl;
    }
    else {
        cout << "s1 < s2" << endl;
    }
}