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114 lines
3.6 KiB
114 lines
3.6 KiB
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#include <stdio.h>
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#include <string.h>
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#define MAX_STUDENTS 100
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struct student {
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int id;
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int class;
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char name[20];
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float score1;
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float score2;
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float score3;
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};
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void search(struct student students[], int num_students, int query);
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void sort(struct student students[], int num_students);
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void output(struct student students[], int num_students);
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int main() {
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struct student students[MAX_STUDENTS] = {
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{10001, 11, "Zhang", 99.5, 88.5, 89.5},
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{10002, 12, "Yang", 77.9, 56.5, 87.5},
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{10003, 11, "Liang", 92.5, 99.0, 60.5},
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{10004, 11, "Cai", 89.6, 56.9, 90.5},
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{10005, 14, "Fu", 55.6, 67.9, 98.9},
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{10006, 12, "Mao", 22.1, 45.9, 99.2},
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{10007, 13, "Zhan", 35.6, 67.9, 88.0}
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};
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int num_students = 7;
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int query = 0;
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printf("请输入查询要求：\n");
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scanf("%d", &query);
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search(students, num_students, query);
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sort(students, num_students);
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return 0;
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}
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void search(struct student students[], int num_students, int query) {
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printf("查询结果如下：\n");
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if (query == 1) {
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int class_start, class_end;
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scanf("%d-%d", &class_start, &class_end);
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for (int k = 0; k < num_students; k++) {
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struct student s = students[k];
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if (s.class >= class_start && s.class <= class_end) {
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printf("%d %d %s %.1f %.1f %.1f\n", s.id, s.class, s.name, s.score1, s.score2, s.score3);
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}
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}
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}
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else if (query == 2) {
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int id_start, id_end;
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scanf("%d-%d", &id_start, &id_end);
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for (int k = 0; k < num_students; k++) {
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struct student s = students[k];
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if (s.id >= id_start && s.id <= id_end) {
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printf("%d %d %s %.1f %.1f %.1f\n", s.id, s.class, s.name, s.score1, s.score2, s.score3);
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}
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}
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}
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else if (query == 3) {
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char nam[20];
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scanf("%s", nam);
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for (int k = 0; k < num_students; k++) {
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struct student s = students[k];
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if (strstr(s.name, nam) == s.name) {
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printf("%d %d %s %.1f %.1f %.1f\n", s.id, s.class, s.name, s.score1, s.score2, s.score3);
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}
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}
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}
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else if (query == 4) {
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float score;
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scanf("%f", &score);
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for (int k = 0; k < num_students; k++) {
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struct student s = students[k];
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if (s.score1 + s.score2 + s.score3 >= score) {
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printf("%d %d %s %.1f %.1f %.1f\n", s.id, s.class, s.name, s.score1, s.score2, s.score3);
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}
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}
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}
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}
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void sort(struct student students[], int num_students) {
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// 冒泡排序示例
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for (int i = 0; i < num_students - 1; i++) {
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for (int j = 0; j < num_students - i - 1; j++) {
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// 计算总成绩
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float total_j = students[j].score1 + students[j].score2 + students[j].score3;
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float total_j1 = students[j + 1].score1 + students[j + 1].score2 + students[j + 1].score3;
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if (total_j < total_j1) {
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// 交换学生数据
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struct student temp = students[j];
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students[j] = students[j + 1];
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students[j + 1] = temp;
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}
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}
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}
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}
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void output(struct student students[], int num_students) {
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int i;
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printf("学号\t班级\t姓名\t\t科目1\t科目2\t科目3\n");
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for (i = 0; i < num_students; i++) {
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struct student s = students[i];
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printf("%d\t%d\t%-12s\t%.1f\t%.1f\t%.1f\n", s.id, s.class, s.name, s.score1, s.score2, s.score3);
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}
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} |