请用C++完成以下代码：某班共有若干名学生，学生信息用如下的stuinfo结构表示，其中，男学生则gender取值为’m’，女学生则gender取值为’f’。2022年春季学期4门课程的成绩依次保存在score1~score4中。请编写函数int statistics(stuinfo stus[], int n)分别统计男生和女生的4门课程总成绩的最高分，其中stus数组存储了班上所有学生的信息，n为班上学生的总人数。函数最后返回男生总成绩最高分减去女生总成绩最高分的结果。 struct stuinfo { int id; // 学号 char name[10]; // 姓名 char gender; // 性别 int score1; // 课程1成绩 int score2; // 课程2成绩 int score3; // 课程3成绩 int score4; // 课程4成绩 }; int statistics(stuinfo stus[], int n)

Sure! Here's the implementation of the `statistics` function in C++:

#include <iostream>

struct stuinfo {
    int id;         // 学号
    char name[10];  // 姓名
    char gender;    // 性别
    int score1;     // 课程1成绩
    int score2;     // 课程2成绩
    int score3;     // 课程3成绩
    int score4;     // 课程4成绩
};

int statistics(stuinfo stus[], int n) {
    int maxMaleScore = 0;
    int maxFemaleScore = 0;

    for (int i = 0; i < n; i++) {
        if (stus[i].gender == 'm') {
            if (stus[i].score1 > maxMaleScore) {
                maxMaleScore = stus[i].score1;
            }
            if (stus[i].score2 > maxMaleScore) {
                maxMaleScore = stus[i].score2;
            }
            if (stus[i].score3 > maxMaleScore) {
                maxMaleScore = stus[i].score3;
            }
            if (stus[i].score4 > maxMaleScore) {
                maxMaleScore = stus[i].score4;
            }
        } else if (stus[i].gender == 'f') {
            if (stus[i].score1 > maxFemaleScore) {
                maxFemaleScore = stus[i].score1;
            }
            if (stus[i].score2 > maxFemaleScore) {
                maxFemaleScore = stus[i].score2;
            }
            if (stus[i].score3 > maxFemaleScore) {
                maxFemaleScore = stus[i].score3;
            }
            if (stus[i].score4 > maxFemaleScore) {
                maxFemaleScore = stus[i].score4;
            }
        }
    }

    return maxMaleScore - maxFemaleScore;
}

int main() {
    // Example usage
    stuinfo students[3] = {
        {1, "Alice", 'f', 80, 90, 85, 95},
        {2, "Bob", 'm', 70, 75, 80, 85},
        {3, "Charlie", 'm', 90, 85, 95, 80}
    };

    int result = statistics(students, 3);
    std::cout << "Difference between max male score and max female score: " << result << std::endl;

    return 0;
}

In this example, I've provided a sample usage of the `statistics` function in the `main` function. You can modify it according to your needs. The function calculates the difference between the maximum score of male students and the maximum score of female students.