parent
70062fe30b
commit
e58260a902
@ -1,154 +0,0 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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// 定义学生结构体
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struct Student {
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char id[20];
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char clas[20];
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char name[20];
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double score1;
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double score2;
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double score3;
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double score;
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};
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// 全局学生数组
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struct Student* students[100];
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int studentCount = 0;
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// 菜单函数
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void printMenu() {
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printf("1. Input\n");
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printf("2. Delete\n");
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printf("3. Select\n");
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printf("4. Order\n");
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printf("5. Output\n");
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printf("6. Quit\n");
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printf("Please input your option: ");
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}
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// 学生信息录入函数
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void inputStudent() {
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if (studentCount < 100) {
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struct Student* student = (struct Student*)malloc(sizeof(struct Student));
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printf("Id: ");
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scanf("%s", student->id);
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printf("Class: ");
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scanf("%s", student->clas);
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printf("Name: ");
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scanf("%s", student->name);
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printf("Score1: ");
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scanf("%lf", &student->score1);
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printf("Score2: ");
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scanf("%lf", &student->score2);
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printf("Score3: ");
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scanf("%lf", &student->score3);
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student->score = student->score1 + student->score2 + student->score3;
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students[studentCount++] = student;
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} else {
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printf("Student database is full!\n");
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}
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}
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// 学生信息删除函数
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void deleteStudent() {
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char deleteId[20];
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printf("Enter student ID or name to delete: ");
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scanf("%s", deleteId);
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int deleted = 0;
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for (int i = 0; i < studentCount; i++) {
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if (strcmp(students[i]->id, deleteId) == 0 || strcmp(students[i]->name, deleteId) == 0) {
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free(students[i]);
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for (int j = i; j < studentCount - 1; j++) {
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students[j] = students[j + 1];
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}
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studentCount--;
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deleted = 1;
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i--;
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}
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}
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if (deleted == 0) {
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printf("Student not found.\n");
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}
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}
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// 学生信息查询函数
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void selectStudent() {
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char query[20];
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printf("Enter student ID or class to select: ");
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scanf("%s", query);
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int found = 0;
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for (int i = 0; i < studentCount; i++) {
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if (strcmp(students[i]->id, query) == 0 || strcmp(students[i]->clas, query) == 0) {
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printf("%s, %s, %s, %.1lf, %.1lf, %.1lf, %.1lf\n", students[i]->id, students[i]->clas, students[i]->name, students[i]->score1, students[i]->score2, students[i]->score3, students[i]->score);
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found = 1;
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}
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}
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if (found == 0) {
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printf("There is no eligible student.\n");
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}
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}
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// 学生信息排序函数
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void orderStudents() {
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for (int i = 0; i < studentCount; i++) {
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for (int j = i + 1; j < studentCount; j++) {
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if (strcmp(students[i]->clas, students[j]->clas) > 0 || (strcmp(students[i]->clas, students[j]->clas) == 0 && students[i]->score < students[j]->score)) {
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struct Student* temp = students[i];
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students[i] = students[j];
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students[j] = temp;
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}
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}
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}
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}
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// 学生信息输出函数
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void outputStudents() {
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for (int i = 0; i < studentCount; i++) {
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printf("%s, %s, %s, %.1lf, %.1lf, %.1lf, %.1lf\n", students[i]->id, students[i]->clas, students[i]->name, students[i]->score1, students[i]->score2, students[i]->score3, students[i]->score);
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}
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}
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int main() {
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int option;
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do {
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printMenu();
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scanf("%d", &option);
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switch (option) {
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case 1:
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inputStudent();
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break;
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case 2:
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deleteStudent();
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break;
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case 3:
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selectStudent();
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break;
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case 4:
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orderStudents();
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outputStudents();
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break;
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case 5:
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outputStudents();
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break;
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case 6:
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// 退出程序
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break;
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default:
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printf("Invalid option. Please try again.\n");
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}
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} while (option != 6);
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// 释放内存
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for (int i = 0; i < studentCount; i++) {
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free(students[i]);
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}
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return 0;
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}
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