614 lines
19 KiB
C
614 lines
19 KiB
C
/**
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* @file stu_data.c
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* @brief 学生数据管理实现文件
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* @note 实现学生信息的增删改查功能
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*/
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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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#include "stu.data.h"
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#include "config.h"
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#include "globals.h"
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#include "auxiliary.h"
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#include "statistical_analysis.h"
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/**
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* @brief 从CSV文件加载学生数据
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*/
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void loadStudentsFromFile() {
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FILE* file = fopen(STUDENTS_FILE, "r");
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if (file == NULL) {
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studentCount = 0;
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printInfo("学生数据文件不存在，将创建新文件。");
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return;
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}
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char line[1024];
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studentCount = 0;
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// 跳过CSV头部
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if (fgets(line, sizeof(line), file) == NULL) {
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fclose(file);
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studentCount = 0;
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return;
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}
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// 读取学生数据
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while (fgets(line, sizeof(line), file) != NULL && studentCount < MAX_STUDENTS) {
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Student* student = &students[studentCount];
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memset(student, 0, sizeof(Student));
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// 解析CSV行
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char* token = strtok(line, ",");
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if (token == NULL) continue;
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// 学号
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strncpy(student->studentID, token, MAX_ID_LENGTH - 1);
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// 姓名
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token = strtok(NULL, ",");
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if (token == NULL) continue;
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strncpy(student->name, token, MAX_NAME_LENGTH - 1);
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// 年龄
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token = strtok(NULL, ",");
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if (token == NULL) continue;
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student->age = atoi(token);
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// 性别
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token = strtok(NULL, ",");
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if (token == NULL) continue;
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student->gender = token[0];
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// 课程数量
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token = strtok(NULL, ",");
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if (token == NULL) continue;
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student->courseCount = atoi(token);
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// 课程和成绩
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for (int i = 0; i < student->courseCount && i < MAX_COURSES; i++) {
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// 课程名称
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token = strtok(NULL, ",");
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if (token == NULL) break;
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strncpy(student->courses[i], token, MAX_COURSE_NAME_LENGTH - 1);
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// 成绩
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token = strtok(NULL, ",");
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if (token == NULL) break;
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student->scores[i] = atof(token);
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}
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// 总分
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token = strtok(NULL, ",");
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if (token != NULL) {
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student->totalScore = atof(token);
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}
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// 平均分
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token = strtok(NULL, ",");
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if (token != NULL) {
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student->averageScore = atof(token);
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}
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studentCount++;
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}
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fclose(file);
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// 更新统计信息
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statsNeedUpdate = true;
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}
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/**
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* @brief 将学生数据保存到CSV文件
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*/
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void saveStudentsToFile() {
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FILE* file = fopen(STUDENTS_FILE, "w");
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if (file == NULL) {
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printError("无法保存学生数据！");
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return;
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}
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// 写入CSV头部
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fprintf(file, "学号,姓名,年龄,性别,课程数量");
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for (int i = 0; i < MAX_COURSES; i++) {
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fprintf(file, ",课程%d,成绩%d", i+1, i+1);
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}
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fprintf(file, ",总分,平均分\n");
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// 写入学生数据
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for (int i = 0; i < studentCount; i++) {
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Student* student = &students[i];
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// 基本信息
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fprintf(file, "%s,%s,%d,%c,%d",
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student->studentID,
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student->name,
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student->age,
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student->gender,
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student->courseCount);
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// 课程和成绩
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for (int j = 0; j < MAX_COURSES; j++) {
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if (j < student->courseCount) {
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fprintf(file, ",%s,%.2f", student->courses[j], student->scores[j]);
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} else {
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fprintf(file, ",,"); // 空的课程和成绩
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}
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}
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// 总分和平均分
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fprintf(file, ",%.2f,%.2f\n", student->totalScore, student->averageScore);
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}
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fclose(file);
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dataModified = false;
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printSuccess("学生数据已保存到CSV文件！");
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}
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/**
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* @brief 添加学生信息
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*/
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void addStudent() {
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clearScreen();
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printHeader("添加学生信息");
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if (studentCount >= MAX_STUDENTS) {
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printError("学生数量已达上限！");
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pauseSystem();
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return;
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}
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Student newStudent;
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memset(&newStudent, 0, sizeof(Student));
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printf("\n");
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// 输入学号
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while (1) {
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safeInputString("请输入学号", newStudent.studentID, MAX_ID_LENGTH);
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if (!isValidStudentID(newStudent.studentID)) {
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printError("学号格式无效！");
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continue;
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}
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// 检查学号是否已存在
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bool exists = false;
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for (int i = 0; i < studentCount; i++) {
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if (strcmp(students[i].studentID, newStudent.studentID) == 0) {
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printError("学号已存在！");
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exists = true;
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break;
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}
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}
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if (!exists) break;
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}
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// 输入姓名
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while (1) {
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safeInputString("请输入姓名", newStudent.name, MAX_NAME_LENGTH);
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if (isValidName(newStudent.name)) break;
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printError("姓名格式无效！");
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}
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// 输入年龄
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newStudent.age = safeInputInt("请输入年龄", 10, 100);
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// 输入性别
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while (1) {
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printf("请输入性别 (M/F): ");
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char gender;
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scanf(" %c", &gender);
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clearInputBuffer();
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if (isValidGender(gender)) {
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newStudent.gender = gender;
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break;
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}
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printError("性别输入无效！请输入 M 或 F");
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}
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// 输入课程信息
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printf("\n开始输入课程信息：\n");
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newStudent.courseCount = 0;
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while (newStudent.courseCount < MAX_COURSES) {
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printf("\n第 %d 门课程：\n", newStudent.courseCount + 1);
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safeInputString("课程名称",
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newStudent.courses[newStudent.courseCount],
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MAX_COURSE_NAME_LENGTH);
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newStudent.scores[newStudent.courseCount] =
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safeInputFloat("课程分数", MIN_SCORE, MAX_SCORE);
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newStudent.courseCount++;
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if (newStudent.courseCount < MAX_COURSES) {
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printf("\n是否继续添加课程？(y/n): ");
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char choice;
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scanf(" %c", &choice);
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clearInputBuffer();
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if (choice != 'y' && choice != 'Y') {
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break;
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}
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}
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}
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// 计算总分和平均分
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calculateStudentStats(&newStudent);
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// 添加到数组
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students[studentCount] = newStudent;
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studentCount++;
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// 标记数据已修改
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dataModified = true;
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statsNeedUpdate = true;
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printSuccess("学生信息添加成功！");
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printf("学号: %s\n", newStudent.studentID);
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printf("姓名: %s\n", newStudent.name);
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printf("总分: %.2f\n", newStudent.totalScore);
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printf("平均分: %.2f\n", newStudent.averageScore);
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pauseSystem();
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}
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/**
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* @brief 删除学生信息
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*/
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void deleteStudent() {
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clearScreen();
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printHeader("删除学生信息");
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if (studentCount == 0) {
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printWarning("暂无学生数据！");
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pauseSystem();
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return;
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}
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char studentID[MAX_ID_LENGTH];
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printf("\n");
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safeInputString("请输入要删除的学生学号", studentID, MAX_ID_LENGTH);
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// 查找学生
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for (int i = 0; i < studentCount; i++) {
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if (strcmp(students[i].studentID, studentID) == 0) {
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printf("\n找到学生信息：\n");
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printf("学号: %s\n", students[i].studentID);
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printf("姓名: %s\n", students[i].name);
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printf("\n确认删除？(y/n): ");
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char choice;
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scanf(" %c", &choice);
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clearInputBuffer();
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if (choice == 'y' || choice == 'Y') {
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// 移动后面的学生向前
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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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dataModified = true;
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statsNeedUpdate = true;
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printSuccess("学生信息删除成功！");
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} else {
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printInfo("删除操作已取消。");
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}
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pauseSystem();
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return;
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}
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}
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printError("未找到该学号的学生！");
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pauseSystem();
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}
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/**
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* @brief 修改学生信息
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*/
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void modifyStudent() {
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clearScreen();
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printHeader("修改学生信息");
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if (studentCount == 0) {
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printWarning("暂无学生数据！");
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pauseSystem();
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return;
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}
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char studentID[MAX_ID_LENGTH];
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printf("\n");
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safeInputString("请输入要修改的学生学号", studentID, MAX_ID_LENGTH);
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// 查找学生
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for (int i = 0; i < studentCount; i++) {
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if (strcmp(students[i].studentID, studentID) == 0) {
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printf("\n找到学生信息：\n");
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printf("学号: %s\n", students[i].studentID);
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printf("姓名: %s\n", students[i].name);
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printf("年龄: %d\n", students[i].age);
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printf("性别: %c\n", students[i].gender);
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printf("\n修改选项：\n");
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printf("1. 修改姓名\n");
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printf("2. 修改年龄\n");
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printf("3. 修改性别\n");
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printf("4. 修改课程成绩\n");
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printf("0. 返回\n");
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int choice = safeInputInt("请选择修改项", 0, 4);
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switch (choice) {
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case 1: // 修改姓名
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safeInputString("请输入新姓名", students[i].name, MAX_NAME_LENGTH);
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break;
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case 2:
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students[i].age = safeInputInt("请输入新年龄", 10, 100);
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break;
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case 3:
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while (1) {
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printf("请输入新性别 (M/F): ");
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char gender;
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scanf(" %c", &gender);
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clearInputBuffer();
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if (isValidGender(gender)) {
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students[i].gender = gender;
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break;
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}
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printError("性别输入无效！");
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}
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break;
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case 4:
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printf("\n当前课程列表：\n");
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for (int j = 0; j < students[i].courseCount; j++) {
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printf("%d. %s: %.2f\n", j + 1, students[i].courses[j], students[i].scores[j]);
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}
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printf("\n修改选项：\n");
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printf("1. 修改现有课程成绩\n");
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printf("2. 添加新课程\n");
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printf("3. 删除课程\n");
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printf("0. 返回\n");
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int courseChoice = safeInputInt("请选择操作", 0, 3);
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switch (courseChoice) {
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case 1: // 修改现有课程成绩
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if (students[i].courseCount == 0) {
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printWarning("该学生没有课程记录！");
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break;
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}
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int courseIndex = safeInputInt("请选择要修改的课程", 1, students[i].courseCount) - 1;
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students[i].scores[courseIndex] = safeInputFloat("新成绩", MIN_SCORE, MAX_SCORE);
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break;
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case 2: // 添加新课程
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if (students[i].courseCount >= MAX_COURSES) {
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printWarning("课程数量已达上限！");
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break;
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}
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safeInputString("课程名称", students[i].courses[students[i].courseCount], MAX_COURSE_NAME_LENGTH);
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students[i].scores[students[i].courseCount] = safeInputFloat("课程成绩", MIN_SCORE, MAX_SCORE);
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students[i].courseCount++;
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break;
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case 3: // 删除课程
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if (students[i].courseCount == 0) {
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printWarning("该学生没有课程记录！");
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break;
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}
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courseIndex = safeInputInt("请选择要删除的课程", 1, students[i].courseCount) - 1;
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// 移动数组元素
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for (int k = courseIndex; k < students[i].courseCount - 1; k++) {
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strcpy(students[i].courses[k], students[i].courses[k + 1]);
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students[i].scores[k] = students[i].scores[k + 1];
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}
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students[i].courseCount--;
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break;
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}
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break;
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case 0:
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return;
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}
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if (choice == 4) {
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calculateStudentStats(&students[i]);
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}
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dataModified = true;
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statsNeedUpdate = true;
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printSuccess("学生信息修改成功！");
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pauseSystem();
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return;
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}
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}
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printError("未找到该学号的学生！");
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pauseSystem();
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}
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/**
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* @brief 修改学生课程成绩
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*/
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/**
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* @brief 按学号查找学生
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*/
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void searchStudentByID() {
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clearScreen();
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printHeader("按学号查找学生");
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if (studentCount == 0) {
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printWarning("暂无学生数据！");
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pauseSystem();
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return;
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}
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char studentID[MAX_ID_LENGTH];
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printf("\n");
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safeInputString("请输入学号", studentID, MAX_ID_LENGTH);
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for (int i = 0; i < studentCount; i++) {
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if (strcmp(students[i].studentID, studentID) == 0) {
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displayStudentInfo(&students[i]);
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pauseSystem();
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return;
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}
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}
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printError("未找到该学号的学生！");
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pauseSystem();
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}
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/**
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* @brief 按姓名查找学生
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*/
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void searchStudentByName() {
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clearScreen();
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printHeader("按姓名查找学生");
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if (studentCount == 0) {
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printWarning("暂无学生数据！");
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pauseSystem();
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return;
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}
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char name[MAX_NAME_LENGTH];
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printf("\n");
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safeInputString("请输入姓名（支持模糊查找）", name, MAX_NAME_LENGTH);
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bool found = false;
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for (int i = 0; i < studentCount; i++) {
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if (strstr(students[i].name, name) != NULL) {
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if (!found) {
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printf("\n找到以下匹配的学生：\n");
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printSeparator();
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found = true;
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}
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displayStudentInfo(&students[i]);
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printf("\n");
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}
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}
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if (!found) {
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printError("未找到匹配的学生！");
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}
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pauseSystem();
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}
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/**
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* @brief 显示所有学生信息
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*/
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void displayAllStudents() {
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clearScreen();
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printHeader("所有学生信息");
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if (studentCount == 0) {
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printWarning("暂无学生数据！");
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pauseSystem();
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return;
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}
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printf("\n");
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// 调整中文表头的对齐格式，考虑中文字符的显示宽度
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printf("%-10s %-12s %-6s %-6s %-8s %-8s\n",
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"学号", "姓名", "年龄", "性别", "总分", "平均分");
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printf("========================================\n");
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for (int i = 0; i < studentCount; i++) {
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printf("%-10s %-12s %-6d %-6c %-8.2f %-8.2f\n",
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students[i].studentID,
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students[i].name,
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students[i].age,
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students[i].gender,
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students[i].totalScore,
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students[i].averageScore);
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}
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printf("\n总学生数: %d\n", studentCount);
|
|
pauseSystem();
|
|
}
|
|
|
|
/**
|
|
* @brief 显示单个学生详细信息
|
|
*/
|
|
void displayStudentInfo(const Student* student) {
|
|
printf("\n学生详细信息：\n");
|
|
printSeparator();
|
|
printf("学号: %s\n", student->studentID);
|
|
printf("姓名: %s\n", student->name);
|
|
printf("年龄: %d\n", student->age);
|
|
printf("性别: %c\n", student->gender);
|
|
printf("课程数量: %d\n", student->courseCount);
|
|
|
|
if (student->courseCount > 0) {
|
|
printf("\n课程成绩：\n");
|
|
for (int i = 0; i < student->courseCount; i++) {
|
|
printf(" %s: %.2f分\n",
|
|
student->courses[i],
|
|
student->scores[i]);
|
|
}
|
|
printf("\n总分: %.2f\n", student->totalScore);
|
|
printf("平均分: %.2f\n", student->averageScore);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief 排序学生信息
|
|
*/
|
|
void sortStudents(int criteria, int order) {
|
|
if (studentCount <= 1) return;
|
|
|
|
// 使用冒泡排序
|
|
for (int i = 0; i < studentCount - 1; i++) {
|
|
for (int j = 0; j < studentCount - 1 - i; j++) {
|
|
bool shouldSwap = false;
|
|
|
|
switch (criteria) {
|
|
case SORT_BY_ID:
|
|
shouldSwap = (order == SORT_ASCENDING) ?
|
|
strcmp(students[j].studentID, students[j + 1].studentID) > 0 :
|
|
strcmp(students[j].studentID, students[j + 1].studentID) < 0;
|
|
break;
|
|
case SORT_BY_NAME:
|
|
shouldSwap = (order == SORT_ASCENDING) ?
|
|
strcmp(students[j].name, students[j + 1].name) > 0 :
|
|
strcmp(students[j].name, students[j + 1].name) < 0;
|
|
break;
|
|
case SORT_BY_TOTAL_SCORE:
|
|
shouldSwap = (order == SORT_ASCENDING) ?
|
|
students[j].totalScore > students[j + 1].totalScore :
|
|
students[j].totalScore < students[j + 1].totalScore;
|
|
break;
|
|
case SORT_BY_AVERAGE_SCORE:
|
|
shouldSwap = (order == SORT_ASCENDING) ?
|
|
students[j].averageScore > students[j + 1].averageScore :
|
|
students[j].averageScore < students[j + 1].averageScore;
|
|
break;
|
|
}
|
|
|
|
if (shouldSwap) {
|
|
Student temp = students[j];
|
|
students[j] = students[j + 1];
|
|
students[j + 1] = temp;
|
|
}
|
|
}
|
|
}
|
|
|
|
dataModified = true;
|
|
} |