51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
#include "c_InsertionSort.h"
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#include <stdlib.h>
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#include <stdio.h>
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typedef struct {
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int id;
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char name[20];
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double score;
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} Student;
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// 自定义比较函数：按成绩 (score) 降序排列
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// 如果希望升序，只需反转返回值或改变比较符号
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int compareStudentsByScoreDesc(const void* a, const void* b) {
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const Student* s1 = (const Student*)a;
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const Student* s2 = (const Student*)b;
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if (s1->score > s2->score) return -1; // s1 成绩高，排在前面
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if (s1->score < s2->score) return 1; // s1 成绩低，排在后面
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return 0;
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}
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int main(int argc, char* argv[]) {
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// 准备一个无序的学生数组
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Student students[] = {
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{101, "Alice", 82.5},
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{105, "Bob", 95.0},
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{109, "Charlie", 88.0},
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{112, "David", 79.5}
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};
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size_t count = sizeof(students) / sizeof(students[0]);
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printf("排序前：\n");
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for (size_t i = 0; i < count; i++) {
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printf("学号: %d, 姓名: %s, 成绩: %.1f\n", students[i].id, students[i].name, students[i].score);
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}
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// 调用通用插入排序
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c_InsertionSort(
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students,
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count,
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sizeof(Student),
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compareStudentsByScoreDesc
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);
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printf("\n排序后（按成绩降序）：\n");
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for (size_t i = 0; i < count; i++) {
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printf("学号: %d, 姓名: %s, 成绩: %.1f\n", students[i].id, students[i].name, students[i].score);
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}
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return 0;
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} |