比对结构体中的成绩，由高到低输出 有n个学生的信息（学号、姓名、成绩），要求按照成绩的高低输出各学生的信息 {{10101,"Zhang",78},{10103,"Wang",98.5},{10106,"Li",86},{10108,"Ling",73.5},{10110,"Fun",100}

可以使用冒泡排序（Bubble Sort）对结构体数组按照成绩从高到低进行排序，然后依次输出学生信息。

代码实现如下：

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

struct Student {
    int id;
    char name[20];
    float score;
};

void Swap(struct Student* a, struct Student* b) {
    struct Student temp = *a;
    *a = *b;
    *b = temp;
}

void BubbleSort(struct Student stu[], int n) {
    for (int i = 0; i < n - 1; i++) {
        for (int j = 0; j < n - i - 1; j++) {
            if (stu[j].score < stu[j + 1].score) {
                Swap(&stu[j], &stu[j + 1]);
            }
        }
    }
}

int main() {
    struct Student stu[] = {
        {10101, "Zhang", 78},
        {10103, "Wang", 98.5},
        {10106, "Li", 86},
        {10108, "Ling", 73.5},
        {10110, "Fun", 100}
    };
    int n = sizeof(stu) / sizeof(stu[0]);

    BubbleSort(stu, n);

    printf("按成绩从高到低输出学生信息：\n");
    for (int i = 0; i < n; i++) {
        printf("%-6d%-10s%.1f\n", stu[i].id, stu[i].name, stu[i].score);
    }

    return 0;
}

输出结果为：

按成绩从高到低输出学生信息：
10110 Fun       100.0
10103 Wang      98.5
10106 Li        86.0
10101 Zhang     78.0
10108 Ling      73.5