在c语言中.从键盘输入9个学生的数据，包括：学号、姓名、性别、年龄、身高、体重，和体育课百米、跳远、跳高三项目的成绩。要求输出9人各项总平均成绩，及最高成绩学生的数据（学号、姓名、三项目成绩）。

以下是C语言实现从键盘输入9个学生数据并计算各项总平均成绩以及最高成绩学生数据的代码：

#include <stdio.h>
#include <string.h>

struct student {
    char id[20];
    char name[20];
    char sex[5];
    int age;
    float height;
    float weight;
    float sprint;
    float long_jump;
    float high_jump;
    float total_score;
};

int main() {
    struct student stu[9];
    float sprint_sum = 0, long_jump_sum = 0, high_jump_sum = 0, total_score_sum = 0;
    float sprint_avg, long_jump_avg, high_jump_avg, total_score_avg;
    int max_index = 0;
    float max_score = 0;

    // 从键盘输入9个学生的数据
    for (int i = 0; i < 9; i++) {
        printf("请输入第%d个学生的数据：\n", i + 1);
        printf("学号：");
        scanf("%s", stu[i].id);
        printf("姓名：");
        scanf("%s", stu[i].name);
        printf("性别：");
        scanf("%s", stu[i].sex);
        printf("年龄：");
        scanf("%d", &stu[i].age);
        printf("身高：");
        scanf("%f", &stu[i].height);
        printf("体重：");
        scanf("%f", &stu[i].weight);
        printf("百米成绩：");
        scanf("%f", &stu[i].sprint);
        printf("跳远成绩：");
        scanf("%f", &stu[i].long_jump);
        printf("跳高成绩：");
        scanf("%f", &stu[i].high_jump);

        // 计算总成绩
        stu[i].total_score = stu[i].sprint + stu[i].long_jump + stu[i].high_jump;

        // 计算各项总分数
        sprint_sum += stu[i].sprint;
        long_jump_sum += stu[i].long_jump;
        high_jump_sum += stu[i].high_jump;
        total_score_sum += stu[i].total_score;

        // 找到最高成绩学生的数据
        if (stu[i].total_score > max_score) {
            max_score = stu[i].total_score;
            max_index = i;
        }
    }

    // 计算各项平均分数
    sprint_avg = sprint_sum / 9;
    long_jump_avg = long_jump_sum / 9;
    high_jump_avg = high_jump_sum / 9;
    total_score_avg = total_score_sum / 9;

    // 输出各项平均分数
    printf("各项平均分数：\n");
    printf("百米平均成绩：%.2f\n", sprint_avg);
    printf("跳远平均成绩：%.2f\n", long_jump_avg);
    printf("跳高平均成绩：%.2f\n", high_jump_avg);
    printf("总平均成绩：%.2f\n", total_score_avg);

    // 输出最高成绩学生的数据
    printf("最高成绩学生的数据：\n");
    printf("学号：%s\n", stu[max_index].id);
    printf("姓名：%s\n", stu[max_index].name);
    printf("百米成绩：%.2f\n", stu[max_index].sprint);
    printf("跳远成绩：%.2f\n", stu[max_index].long_jump);
    printf("跳高成绩：%.2f\n", stu[max_index].high_jump);

    return 0;
}