学生选修课程程序.zip

#include <stdio.h> #include <stdlib.h> #include <string.h> //课程结构体 typedef struct { char courseID[20]; char courseName[50]; char courseLocation[20]; int totalHours; int lectureHours; int labHours; int credits; int semester; } Course; //学生结构体 typedef struct { char studentID[20]; Course enrolledCourses[10]; Course droppedCourses[10]; int enrolledCount; int droppedCount; double courseGrades[10]; } Student; //教师结构体 typedef struct { char teacherName[50]; char password[20]; Course managedCourses[10]; int managedCount; } Teacher; //教务管理员结构体 typedef struct { char password[20]; Student students[100]; Teacher teachers[50]; Course courses[100]; int studentCount; int teacherCount; int courseCount; } Admin; void studentMode(Admin *admin); void teacherMode(Admin *admin); void adminMode(Admin *admin); void saveData(const Admin *admin); void loadData(Admin *admin); void manageCoursesForTeacher(Admin *admin, Teacher *teacher); void viewEnrolledStudents(Admin *admin, Teacher *teacher); void postGrades(Admin *admin, Teacher *teacher); void manageStudents(Admin *admin); void manageTeachers(Admin *admin); void manageCourses(Admin *admin); void viewStudentCourses(Admin *admin); void changeAdminPassword(Admin *admin); void changeTeacherPassword(Admin *admin); void viewStudentGrades(Admin *admin); int main() { Admin admin; strcpy(admin.password, "123"); //从文件加载数据 loadData(&admin); while (1) { printf("*******选择模式*******\n"); printf("\n"); printf("1. 学生模式\n"); printf("2. 教师模式\n"); printf("3. 管理员模式\n"); printf("4. 退出\n"); printf("\n"); printf("**********************\n"); printf("\n"); printf("请选择你的身份:"); int choice; if (scanf("%d", &choice) != 1) { // 输入错误处理 while (getchar() != '\n'); // 清空输入缓冲区 printf("\n无效选择，再次尝试\n\n"); continue; } printf("\n"); switch (choice) { case 1: studentMode(&admin); break; case 2: teacherMode(&admin); break; case 3: adminMode(&admin); break; case 4: saveData(&admin); return 0; default: printf("\n"); printf("无效选择，再次尝试\n"); printf("\n"); } } return 0; } //学生模式 void studentMode(Admin *admin) { char studentID[20]; printf("输入学生ID: "); scanf("%s", studentID); int studentIndex = -1; for (int i = 0; i < admin->studentCount; i++) { if (strcmp(admin->students[i].studentID, studentID) == 0) { studentIndex = i; break; } } if (studentIndex == -1) { printf("\n"); printf("无此学生信息\n"); printf("\n"); return; } Student *student = &admin->students[studentIndex]; while (1) { printf("******学生菜单********\n"); printf("\n"); printf("1. 查看课程\n"); printf("2. 选择选修课程\n"); printf("3. 退课\n"); printf("4. 查看已选择选修课程\n"); printf("5. 查看退课课程\n"); printf("6. 查看成绩\n"); printf("7. 返回\n"); printf("\n"); printf("**********************\n"); printf("\n"); printf("请输入你的选择:"); int choice; if (scanf("%d", &choice) != 1) { while (getchar() != '\n'); printf("\n无效选择，再次尝试\n\n"); continue; } printf("\n"); if (choice == 7) break; switch (choice) { case 1: for (int i = 0; i < admin->courseCount; i++) { printf("%s - %s - %d 学分\n", admin->courses[i].courseName, admin->courses[i].courseLocation, admin->courses[i].credits); } break; case 2: { char courseID[20]; printf("输入要选择选修课ID: "); scanf("%s", courseID); int found = 0; for (int i = 0; i < admin->courseCount; i++) { if (strcmp(admin->courses[i].courseID, courseID) == 0) { student->enrolledCourses[student->enrolledCount++] = admin->courses[i]; printf("\n"); printf("课程已注册成功\n"); printf("\n"); found = 1; break; } } if (!found) { printf("\n"); printf("无此课程\n"); printf("\n"); } break; } case 3: { char courseID[20]; printf("输入要删除课程ID: "); scanf("%s", courseID); int found = 0; for (int i = 0; i < student->enrolledCount; i++) { if (strcmp(student->enrolledCourses[i].courseID, courseID) == 0) { student->droppedCourses[student->droppedCount++] = student->enrolledCourses[i]; for (int j = i; j < student->enrolledCount - 1; j++) { student->enrolledCourses[j] = student->enrolledCourses[j + 1]; } student->enrolledCount--; printf("\n"); printf("课程已删除成功\n"); printf("\n"); found = 1; break; } } if (!found) { printf("在已选择选修课程中没有找到该课程\n"); } break; } case 4: for (int i = 0; i < student->enrolledCount; i++) { printf("%s - %s - %d 学分\n", student->enrolledCourses[i].courseName, student->enrolledCourses[i].courseLocation, student->enrolledCourses[i].credits); } break; case 5: for (int i = 0; i < student->droppedCount; i++) { printf("%s - %s - %d 学分\n", student->droppedCourses[i].courseName, student->droppedCourses[i].courseLocation, student->droppedCourses[i].credits); } break; case 6: for (int i = 0; i < student->enrolledCount; i++) { printf("Course ID: %s - 成绩: %.2f\n", student->enrolledCourses[i].courseID, student->courseGrades[i]); } break; default: printf("\n"); printf("无效选择，再次尝试\n"); printf("\n"); } } } //教师模式 void teacherMode(Admin *admin) { char teacherName[50], password[20]; printf("输入教师姓名: "); scanf("%s", teacherName); printf("输入密码: "); scanf("%s", password); int teacherIndex = -1; for (int i = 0; i < admin->teacherCount; i++) { if (strcmp(admin->teachers[i].teacherName, teacherName) == 0 && strcmp(admin->teachers[i].password, password) == 0) { teacherIndex = i; break; } } if (teacherIndex == -1) { printf("\n"); printf("登录凭据无效\n"); printf("\n"); return; } Teacher *teacher = &admin->teachers[teacherIndex]; while (1) { printf("******教师菜单********\n");