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；方法：构造函数、析构函数、获取总分数的方法、获取平均分数的方法。请编写程序计算三位同学的总分和平均分。

以下是一个实现上述需求的 C++ 代码示例：

#include <iostream>
#include <string>

using namespace std;

class Student {
public:
    Student(string name, int age, char gender, int id, float math_score, float chinese_score, float english_score) {
        this->name = name;
        this->age = age;
        this->gender = gender;
        this->id = id;
        this->math_score = math_score;
        this->chinese_score = chinese_score;
        this->english_score = english_score;
    }

    ~Student() {}

    float get_total_score() {
        return math_score + chinese_score + english_score;
    }

    float get_average_score() {
        return get_total_score() / 3.0f;
    }

private:
    string name;
    int age;
    char gender;
    int id;
    float math_score;
    float chinese_score;
    float english_score;
};

int main() {
    Student stu1("张三", 18, 'M', 1001, 80.0f, 85.0f, 90.0f);
    Student stu2("李四", 19, 'F', 1002, 70.0f, 75.0f, 80.0f);
    Student stu3("王五", 20, 'M', 1003, 90.0f, 95.0f, 100.0f);

    cout << "学生姓名\t学生学号\t总分\t平均分" << endl;
    cout << stu1.get_total_score() << endl;
    cout << stu2.get_total_score() << endl;
    cout << stu3.get_total_score() << endl;

    return 0;
}

输出结果如下：

学生姓名    学生学号    总分    平均分
255
225
285