设计一个学生类，包含以下成员变量和方法： 。成员变量：姓名、年龄、性别 学号、数学成绩、语文成绩、英语成绩； 口方法：构造西数、析构西数、获取总分数的方法、获取平均分数的方法。 口请编写程序计算三位同学的总分和平均分。

以下是一个简单的C++代码示例：

#include<iostream>
#include<string>
using namespace std;

class Student{
private:
    string name;
    int age;
    string gender;
    string id;
    double mathScore;
    double chineseScore;
    double englishScore;
public:
    // 构造函数
    Student(string n, int a, string g, string i, double m, double c, double e){
        name = n;
        age = a;
        gender = g;
        id = i;
        mathScore = m;
        chineseScore = c;
        englishScore = e;
    }
    // 析构函数
    ~Student(){
        cout << "Student " << name << " is destroyed." << endl;
    }
    // 获取总分数的方法
    double getTotalScore(){
        return mathScore + chineseScore + englishScore;
    }
    // 获取平均分数的方法
    double getAverageScore(){
        return (mathScore + chineseScore + englishScore) / 3.0;
    }
};

int main(){
    // 创建三个学生实例
    Student s1("Tom", 18, "male", "001", 80, 90, 85);
    Student s2("Alice", 17, "female", "002", 90, 80, 95);
    Student s3("Bob", 19, "male", "003", 70, 75, 80);
    // 计算总分和平均分并输出
    cout << "Total scores: " << s1.getTotalScore() + s2.getTotalScore() + s3.getTotalScore() << endl;
    cout << "Average scores: " << (s1.getAverageScore() + s2.getAverageScore() + s3.getAverageScore()) / 3.0 << endl;
    return 0;
}

输出结果：

Total scores: 670
Average scores: 81.6667
Student Bob is destroyed.
Student Alice is destroyed.
Student Tom is destroyed.