SAS/Menu.cpp

/*
* <EFBFBD>˵<EFBFBD><EFBFBD>ӿ<EFBFBD>ʵ<EFBFBD><EFBFBD>
*/
#include"Menu.h"

void mainMenu(_ConnectionPtr connection) {
	while (true) {
		try {
			system("cls");
			printf("1.<2E><>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7>\n");
			printf("2.<2E><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7>\n");
			printf("3.ɾ<><C9BE>ѧ<EFBFBD><D1A7>\n");
			printf("4.<2E>޸<EFBFBD>ѧ<EFBFBD><D1A7>\n");
			printf("5.<2E><><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ\n");
			printf("6.<2E><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD>ļ<EFBFBD>\n");
			printf("7.ѧ<><D1A7><EFBFBD>ɼ<EFBFBD><C9BC><EFBFBD><EFBFBD><EFBFBD>\n");
			printf("8.<2E>γ̹<CEB3><CCB9><EFBFBD>\n");
			printf("9.<2E>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD>\n");
			printf("0.<2E>˳<EFBFBD>\n");

			int opt = -1;
			checkOptInput(opt, 0, 9);

			switch (opt) {
			case 1://<2F><>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7>
				showAllStudent(connection);
				break;
			case 2://<2F><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7>
				insertStudent(connection);
				break;
			case 3://ɾ<><C9BE>ѧ<EFBFBD><D1A7>
				deleteStudent(connection);
				break;
			case 4://<2F>޸<EFBFBD>ѧ<EFBFBD><D1A7>
				changeStudent(connection);
				break;
			case 5://<2F><><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
				importData(connection);
				break;
			case 6://<2F><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD>ļ<EFBFBD>
				exportData(connection);
				break;
			case 7://ѧ<><D1A7><EFBFBD>ɼ<EFBFBD><C9BC><EFBFBD><EFBFBD><EFBFBD>
				studentGradeMenu(connection);
				break;
			case 8://<2F>γ̹<CEB3><CCB9><EFBFBD>
				courseMenu(connection);
				break;
			case 9://<2F>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD>
				advancedFunction(connection);
				break;
			default://<2F>˳<EFBFBD><CBB3><EFBFBD><EFBFBD><EFBFBD>
				exit(EXIT_SUCCESS);
			}
			printf("\n");
			system("pause");
		}
		catch (_com_error& err) {
			wprintf(L"<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
			wprintf(L"The application throws the error: %s\n", (wchar_t*)err.ErrorMessage());
			wprintf(L"Description = %s\n", (wchar_t*)err.Description());
			system("pause");
		}
	}
}

void studentGradeMenu(_ConnectionPtr connection) {
	while (true) {
		try {
			system("cls");
			printf("1.<2E><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD>ɼ<EFBFBD>\n");
			printf("2.<2E><>ȡѧ<C8A1><D1A7>ƽ<EFBFBD><C6BD><EFBFBD>ɼ<EFBFBD>\n");
			printf("3.<2E><>ȡѧ<C8A1><D1A7><EFBFBD>ܳɼ<DCB3>\n");
			printf("4.<2E><>ȡ<EFBFBD>༶ƽ<E0BCB6><C6BD><EFBFBD><EFBFBD>\n");
			printf("5.<2E><>ȡ<EFBFBD>༶<EFBFBD><E0BCB6><EFBFBD>߷<EFBFBD>\n");
			printf("6.<2E><>ȡ<EFBFBD>༶<EFBFBD><E0BCB6><EFBFBD>ͷ<EFBFBD>\n");
			printf("7.<2E><>ȡ<EFBFBD>༶<EFBFBD>ɼ<EFBFBD>\n");
			printf("8.<2E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>չ<EFBFBD>˵<EFBFBD>\n");
			printf("0.<2E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>\n");

			int opt = -1;
			checkOptInput(opt, 0, 8);

			printf("\n");

			

			string stuId, courseId;
			string stuClass, courseName;
			double grade = -1;
			size_t size;
			Student* student;
			Course* course;
			vector<Grade>* v;
			switch (opt) {
			case 1://<2F><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD>ɼ<EFBFBD>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
				cin >> stuId;
				student = getStudentById(connection, stuId);
				if (student == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				course = getCourseByName(connection, courseName);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(0-100)<29><>");
				while (!(cin >> grade) || (grade < 0) || (grade > 100)) {
					cout << "<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룺";
					cin.clear();
					while (cin.get() != '\n');
				}

				addGrade(connection, *new Grade(stuId, course->getId(), doubleToString(grade)));
				printf("<EFBFBD><EFBFBD><EFBFBD>ӳɹ<EFBFBD><EFBFBD><EFBFBD>\n");
				break;
			case 2://<2F><>ȡѧ<C8A1><D1A7>ƽ<EFBFBD><C6BD><EFBFBD>ɼ<EFBFBD>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
				cin >> stuId;
				student = getStudentById(connection, stuId);
				if (student == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				printf("ѧ<EFBFBD><EFBFBD>ƽ<EFBFBD><EFBFBD><EFBFBD>ɼ<EFBFBD>Ϊ<EFBFBD><EFBFBD>%.2lf\n", getOnesAvgGrade(connection, stuId));
				break;
			case 3://<2F><>ȡѧ<C8A1><D1A7><EFBFBD>ܳɼ<DCB3>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
				cin >> stuId;
				student = getStudentById(connection, stuId);
				if (student == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				printf("ѧ<EFBFBD><EFBFBD><EFBFBD>ܳɼ<EFBFBD>Ϊ<EFBFBD><EFBFBD>%.2lf\n", getOnesAllGrade(connection, stuId));
				break;
			case 4://<2F><>ȡ<EFBFBD>༶ƽ<E0BCB6><C6BD><EFBFBD><EFBFBD>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>༶<EFBFBD><EFBFBD>");
				cin >> stuClass;
				v = getGradeByStuClass(connection, stuClass);
				if (v == NULL) {
					printf("<EFBFBD>ð༶<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڻ<EFBFBD><EFBFBD>޳ɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				course = getCourseByName(connection, courseName);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				cout << stuClass << " <20>༶ " << courseName << " <20>γ̵<CEB3>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA>" << getClassAvgGrade(connection, stuClass, courseName) << "\n";
				break;
			case 5://<2F><>ȡ<EFBFBD>༶<EFBFBD><E0BCB6><EFBFBD>߷<EFBFBD>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>༶<EFBFBD><EFBFBD>");
				cin >> stuClass;
				v = getGradeByStuClass(connection, stuClass);
				if (v == NULL) {
					printf("<EFBFBD>ð༶<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڻ<EFBFBD><EFBFBD>޳ɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				course = getCourseByName(connection, courseName);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				cout << stuClass << " <20>༶ " << courseName << " <20>γ̵<CEB3><CCB5><EFBFBD><EFBFBD>߷<EFBFBD>Ϊ<EFBFBD><CEAA>" << getClassMaxGrade(connection, stuClass, courseName) << "\n";
				break;
			case 6://<2F><>ȡ<EFBFBD>༶<EFBFBD><E0BCB6><EFBFBD>ͷ<EFBFBD>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>༶<EFBFBD><EFBFBD>");
				cin >> stuClass;
				v = getGradeByStuClass(connection, stuClass);
				if (v == NULL) {
					printf("<EFBFBD>ð༶<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڻ<EFBFBD><EFBFBD>޳ɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				course = getCourseByName(connection, courseName);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				cout << stuClass << " <20>༶ " << courseName << " <20>γ̵<CEB3><CCB5><EFBFBD><EFBFBD>ͷ<EFBFBD>Ϊ<EFBFBD><CEAA>" << getClassMinGrade(connection, stuClass, courseName) << "\n";
				break;
			case 7://<2F><>ȡ<EFBFBD>༶<EFBFBD>ɼ<EFBFBD>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>༶<EFBFBD><EFBFBD>");
				cin >> stuClass;
				v = getGradeByStuClass(connection, stuClass);
				if (v == NULL) {
					printf("<EFBFBD>ð༶<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڻ<EFBFBD><EFBFBD>޳ɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				size = v->size();
				cout << "ѧ<EFBFBD><EFBFBD>\t" << "<EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD>\t" << "<EFBFBD>ɼ<EFBFBD>\n";
				for (size_t i = 0; i < size; i++) {
					cout << (*v)[i].toString() << "\n";
				}
				break;
			case 8://<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>չ<EFBFBD>˵<EFBFBD>
				studentGradeExternMenu(connection);
				break;
			default://<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
				return;
			}
			system("pause");
		}
		catch (_com_error& err) {
			wprintf(L"<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
			wprintf(L"The application throws the error: %s\n", (wchar_t*)err.ErrorMessage());
			wprintf(L"Description = %s\n", (wchar_t*)err.Description());
			system("pause");
		}
	}
}

void studentGradeExternMenu(_ConnectionPtr connection) {
	while (true) {
		try {
			system("cls");
			printf("1.ɾ<><C9BE>ijѧ<C4B3><D1A7>ij<EFBFBD>Ƴɼ<C6B3>\n");
			printf("2.ɾ<><C9BE>ijѧ<C4B3><D1A7><EFBFBD>ɼ<EFBFBD>\n");
			printf("3.ɾ<><C9BE>ij<EFBFBD>Ƴɼ<C6B3>\n");
			printf("4.<2E><><EFBFBD><EFBFBD>ijѧ<C4B3><D1A7>ij<EFBFBD>Ƴɼ<C6B3>\n");
			printf("5.<2E><>ѯijѧ<C4B3><D1A7>ij<EFBFBD>Ƴɼ<C6B3>\n");
			printf("6.<2E><>ѯijѧ<C4B3><D1A7><EFBFBD>ɼ<EFBFBD>\n");
			printf("7.<2E><>ѯij<D1AF>Ƴɼ<C6B3>\n");
			printf("8.<2E><>ѯ<EFBFBD><D1AF><EFBFBD>гɼ<D0B3>\n");
			printf("0.<2E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>\n");

			int opt = -1;
			checkOptInput(opt, 0, 8);

			printf("\n");

			string stuId, courseId;
			string stuClass, courseName;
			double grade = -1;
			size_t size;
			vector<Grade>* v;
			Grade* gra;
			Course* course;
			Student* student;
			switch (opt) {
			case 1://ɾ<><C9BE>ijѧ<C4B3><D1A7>ij<EFBFBD>Ƴɼ<C6B3>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
				cin >> stuId;
				student = getStudentById(connection, stuId);
				if (student == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				course = getCourseByName(connection, courseName);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				gra = getOnesGrade(connection, stuId, course->getId());
				if (gra == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڸÿγ̵ijɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				deleteOnesGrade(connection, stuId, course->getId());
				printf("ɾ<EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD>\n");
				break;
			case 2://ɾ<><C9BE>ijѧ<C4B3><D1A7><EFBFBD>ɼ<EFBFBD>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
				cin >> stuId;
				student = getStudentById(connection, stuId);
				if (student == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				v = getGradeByStuId(connection, stuId);
				if (v == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڳɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				deleteGradeByStuId(connection, stuId);
				printf("ɾ<EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD>\n");
				break;
			case 3://ɾ<><C9BE>ij<EFBFBD>Ƴɼ<C6B3>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				course = getCourseByName(connection, courseName);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				v = getGradeByCourseId(connection, course->getId());
				if (v == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڳɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				deleteGradeByCourseId(connection, course->getId());
				printf("ɾ<EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD>\n");
				break;
			case 4://<2F><><EFBFBD><EFBFBD>ijѧ<C4B3><D1A7>ij<EFBFBD>Ƴɼ<C6B3>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
				cin >> stuId;
				student = getStudentById(connection, stuId);
				if (student == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				course = getCourseByName(connection, courseName);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				gra = getOnesGrade(connection, stuId, course->getId());
				if (gra == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڸÿγ̵ijɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>·<EFBFBD><EFBFBD><EFBFBD>(0-100)<29><>");
				while (!(cin >> grade) || (opt < 0) || (opt > 100)) {
					cout << "<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룺";
					cin.clear();
					while (cin.get() != '\n');
				}

				updateOnesGrade(connection, stuId, course->getId(), doubleToString(grade));
				printf("<EFBFBD><EFBFBD><EFBFBD>ijɹ<EFBFBD><EFBFBD><EFBFBD>\n");
				break;
			case 5://<2F><>ѯijѧ<C4B3><D1A7>ij<EFBFBD>Ƴɼ<C6B3>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
				cin >> stuId;
				student = getStudentById(connection, stuId);
				if (student == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				course = getCourseByName(connection, courseName);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				gra = getOnesGrade(connection, stuId, course->getId());
				if (gra == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڸÿγ̵ijɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				cout << "ѧ<EFBFBD><EFBFBD>\t" << "<EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD>\t" << "<EFBFBD>ɼ<EFBFBD>\n";
				cout << (*gra).toString() << "\n";
				break;
			case 6://<2F><>ѯijѧ<C4B3><D1A7><EFBFBD>ɼ<EFBFBD>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
				cin >> stuId;
				student = getStudentById(connection, stuId);
				if (student == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				v = getGradeByStuId(connection, stuId);
				if (v == NULL) {
					printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڳɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				size = v->size();
				cout << "ѧ<EFBFBD><EFBFBD>\t" << "<EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD>\t" << "<EFBFBD>ɼ<EFBFBD>\n";
				for (size_t i = 0; i < size; i++) {
					cout << (*v)[i].toString() << "\n";
				}
				break;
			case 7://<2F><>ѯij<D1AF>Ƴɼ<C6B3>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				course = getCourseByName(connection, courseName);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				v = getGradeByCourseId(connection, course->getId());
				if (v == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڶ<EFBFBD>Ӧ<EFBFBD>ɼ<EFBFBD><EFBFBD><EFBFBD>\n");
					break;
				}

				size = v->size();
				cout << "ѧ<EFBFBD><EFBFBD>\t" << "<EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD>\t" << "<EFBFBD>ɼ<EFBFBD>\n";
				for (size_t i = 0; i < size; i++) {
					cout << (*v)[i].toString() << "\n";
				}
				break;
			case 8://<2F><>ѯ<EFBFBD><D1AF><EFBFBD>гɼ<D0B3>
				v = getAllGrade(connection);
				if (v == NULL) {
					printf("<EFBFBD>޳ɼ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				size = v->size();
				cout << "ѧ<EFBFBD><EFBFBD>\t" << "<EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD>\t" << "<EFBFBD>ɼ<EFBFBD>\n";
				for (size_t i = 0; i < size; i++) {
					cout << (*v)[i].toString() << "\n";
				}
				break;
			default://<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
				return;
			}
			system("pause");
		}
		catch (_com_error& err) {
			wprintf(L"<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
			wprintf(L"The application throws the error: %s\n", (wchar_t*)err.ErrorMessage());
			wprintf(L"Description = %s\n", (wchar_t*)err.Description());
			system("pause");
		}
	}
}

void courseMenu(_ConnectionPtr connection) {
	while (true) {
		try {
			system("cls");
			printf("1.<2E><><EFBFBD>ӿγ<D3BF>\n");
			printf("2.ɾ<><C9BE><EFBFBD>γ<EFBFBD>\n");
			printf("3.<2E><><EFBFBD>Ŀγ<C4BF>\n");
			printf("4.<2E><>ѯ<EFBFBD><D1AF><EFBFBD>пγ<D0BF>\n");
			printf("0.<2E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>\n");
			int opt = -1;
			checkOptInput(opt, 0, 4);

			printf("\n");

			size_t size;
			string courseId, courseName;
			vector<Course>* v;
			Course* course;
			switch (opt) {
			case 1://<2F><><EFBFBD>ӿγ<D3BF>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ̺ţ<EFBFBD>");
				cin >> courseId;
				course = getCourseById(connection,courseId);
				if (course != NULL) {
					printf("<EFBFBD>ÿγ<EFBFBD><EFBFBD>Ѵ<EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				addCourse(connection, *new Course(courseId, courseName));
				printf("<EFBFBD><EFBFBD><EFBFBD>ӳɹ<EFBFBD><EFBFBD><EFBFBD>\n");
				break;
			case 2://ɾ<><C9BE><EFBFBD>γ<EFBFBD>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ̺ţ<EFBFBD>");
				cin >> courseId;
				course = getCourseById(connection, courseId);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				deleteCourse(connection, courseId);
				printf("ɾ<EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD>\n");
				break;
			case 3://<2F><><EFBFBD>Ŀγ<C4BF>
				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ̺ţ<EFBFBD>");
				cin >> courseId;
				course = getCourseById(connection, courseId);
				if (course == NULL) {
					printf("<EFBFBD>ÿγ̲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
					break;
				}

				printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
				cin >> courseName;
				updateCourseName(connection, courseId, courseName);
				printf("<EFBFBD><EFBFBD><EFBFBD>³ɹ<EFBFBD><EFBFBD><EFBFBD>\n");
				break;
			case 4://<2F><>ѯ<EFBFBD><D1AF><EFBFBD>пγ<D0BF>
				v = getAllCourse(connection);
				if (v == NULL) {
					printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڿγ̼<EFBFBD>¼<EFBFBD><EFBFBD>\n");
					break;
				}

				size = v->size();
				cout << "<EFBFBD>γ̺<EFBFBD>\t" << "<EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD>\n";
				for (size_t i = 0; i < size; i++) {
					cout << (*v)[i].toString() << "\n";
				}
				break;
			default://<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
				return;
			}
			system("pause");
		}
		catch (_com_error& err) {
			wprintf(L"<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
			wprintf(L"The application throws the error: %s\n", (wchar_t*)err.ErrorMessage());
			wprintf(L"Description = %s\n", (wchar_t*)err.Description());
			system("pause");
		}
	}
}

void advancedFunction(_ConnectionPtr connection) {
	system("cls");
	_RecordsetPtr record(_uuidof(Recordset));
	string sql;

	//<2F><><EFBFBD><EFBFBD>cin<69><6E><EFBFBD><EFBFBD><EFBFBD>ջ<EFBFBD><D5BB><EFBFBD><EFBFBD><EFBFBD>
	cin.clear();
	while (cin.get() != '\n');

	while (true) {
		try {
			//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE>
			wprintf(L"sql>");
			//<2F><>ȡSQL<51><4C><EFBFBD><EFBFBD>
			getline(cin, sql);
			while (sql == "" || trim(sql)[trim(sql).size() - 1] != ';') {//<2F><>ȡ<EFBFBD><C8A1><EFBFBD>е<EFBFBD>SQL<51><4C><EFBFBD><EFBFBD>
				wprintf(L"   >");
				string tmp;
				getline(cin, tmp);
				sql += " " + tmp;
			}
			//ȥ<><C8A5><EFBFBD><EFBFBD>β<EFBFBD>ո<EFBFBD><D5B8><EFBFBD><EFBFBD>м<EFBFBD><D0BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ո<EFBFBD>
			sql = reduce(sql);
			//<2F><>ȡSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
			string comType = "";
			getSqlType(sql, comType);
			//ִ<><D6B4>SQL<51><4C><EFBFBD><EFBFBD>
			if (comType == "select") {//<2F><>ѯ
				record = connection->Execute(sql.c_str(), NULL, (long)0);
				for (long i = 0; i < record->Fields->Count; i++)
					wprintf(L"%s\t", (wchar_t*)record->Fields->GetItem(i)->Name);
				printf("\n");
				wprintf(L"%s", (wchar_t*)record->GetString(adClipString, long(-1), "\t", "\n", "Null"));
			}else if (comType == "exit" || comType == "exit;") {//<2F>˳<EFBFBD>
				break;
			}else {//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
				connection->Execute(sql.c_str(), NULL, (long)0);
			}
			printf("\n");
		}
		catch (_com_error& err) {
			wprintf(L"\nThe application throws the error: %s\n", (wchar_t*)err.ErrorMessage());
			wprintf(L"Description = %s\n\n", (wchar_t*)err.Description());
		}
	}
}



void showAllStudent(_ConnectionPtr connection) {
	vector<Student>* vs = getAllStudent(connection);
	if (vs == NULL) {
		printf("ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϢΪ<EFBFBD>գ<EFBFBD>\n");
		return;
	}

	size_t size = vs->size();
	printf("ѧ<EFBFBD><EFBFBD>\t<EFBFBD><EFBFBD><EFBFBD><EFBFBD>\t<EFBFBD>Ա<EFBFBD>\t<EFBFBD>༶\t״̬\n");
	for (size_t i = 0; i < size; i++) {
		cout << (*vs)[i].toString() << "\n";
	}
}

void insertStudent(_ConnectionPtr connection) {
	Student *stu = new Student();
	
	string str;
	printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
	cin >> str;
	Student* checkExist = getStudentById(connection, str);
	if (checkExist != NULL) {
		printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD>Ѵ<EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
		return;
	}

	stu->setId(str);
	printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
	cin >> str;
	stu->setName(str);
	printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>");
	cin >> str;
	stu->setSex(str);
	printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>༶<EFBFBD><EFBFBD>");
	cin >> str;
	stu->setStuClass(str);
	printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD>״̬(<28>ڶ<EFBFBD><DAB6><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>ѧ)<29><>");
	cin >> str;
	stu->setStatus(str);

	addStudent(connection, *stu);
	printf("<EFBFBD><EFBFBD><EFBFBD>ӳɹ<EFBFBD><EFBFBD><EFBFBD>\n");
}

void deleteStudent(_ConnectionPtr connection) {
	string id;
	printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
	cin >> id;
	Student *stu = getStudentById(connection,id);
	if (stu == NULL) {
		printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
		return;
	}

	deleteStudent(connection, id);
	printf("ɾ<EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD>\n");
}

void changeStudent(_ConnectionPtr connection) {
	string id;
	printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD>ţ<EFBFBD>");
	cin >> id;
	Student* stu = getStudentById(connection, id);
	if (stu == NULL) {
		printf("<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>\n");
		return;
	}

	printf("<EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD> <20>༶(0) / ѧ<><D1A7>״̬(1)<29><>\n");
	int opt = -1;
	checkOptInput(opt, 0, 1);

	string input;
	switch (opt) {
		case 0://<2F>޸İ༶
			printf("\n<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>°༶<EFBFBD><EFBFBD>");
			cin >> input;
			updateStudentClass(connection,id,input);
			break;
		default://<2F>޸<EFBFBD>״̬
			printf("\n<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<EFBFBD><EFBFBD>");
			cin >> input;
			updateStudentStatus(connection,id, input);
			break;
	}
}

void exportData(_ConnectionPtr connection) {
	while (true) {
		try {
			// <20>ļ<EFBFBD><C4BC>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򴴽<EFBFBD><F2B4B4BD>ļ<EFBFBD><C4BC><EFBFBD>
			if (_access("./data", 0) == -1) {
				_mkdir("./data");
			}
			system("cls");
			printf("1.<2E><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ\n");
			printf("2.<2E><><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><CEB3><EFBFBD>Ϣ\n");
			printf("3.<2E><><EFBFBD><EFBFBD><EFBFBD>ɼ<EFBFBD><C9BC><EFBFBD>Ϣ\n");
			printf("4.<2E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ\n");
			printf("0.<2E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>\n");
			int opt = -1;
			checkOptInput(opt, 0, 4);

			printf("\n");

			switch (opt) {
			case 1://<2F><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
				exportStudentData(connection);
				break;
			case 2://<2F><><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><CEB3><EFBFBD>Ϣ
				exportCourseData(connection);
				break;
			case 3://<2F><><EFBFBD><EFBFBD><EFBFBD>ɼ<EFBFBD><C9BC><EFBFBD>Ϣ
				exportGradeData(connection);
				break;
			case 4://<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
				exportAllData(connection);
				break;
			default://<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
				return;
			}
			system("pause");
		}
		catch (_com_error& err) {
			wprintf(L"<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
			wprintf(L"The application throws the error: %s\n", (wchar_t*)err.ErrorMessage());
			wprintf(L"Description = %s\n", (wchar_t*)err.Description());
			system("pause");
		}
	}
}

void exportStudentData(_ConnectionPtr connection) {
	ofstream outFile("./data/student.txt", ios::out);
	if (!outFile.is_open()) {
		printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD>student.txt<78>ļ<EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
		return;
	}

	size_t size;
	vector<Student>* vs;
	vs = getAllStudent(connection);
	if (vs == NULL) {
		printf("ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϢΪ<EFBFBD>գ<EFBFBD>\n");
		outFile.close();
		return;
	}
	outFile << "ѧ<EFBFBD><EFBFBD>\t<EFBFBD><EFBFBD><EFBFBD><EFBFBD>\t<EFBFBD>Ա<EFBFBD>\t<EFBFBD>༶\t״̬\n";
	size = vs->size();
	for (size_t i = 0; i < size; i++) {
		outFile << (*vs)[i].toString();
		if (i != (size - 1)) outFile << "\n";
	}
	printf("<EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>student.txt<78>ļ<EFBFBD>!\n");
	outFile.close();
}

void exportCourseData(_ConnectionPtr connection) {
	ofstream outFile("./data/course.txt", ios::out);
	if (!outFile.is_open()) {
		printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD>course.txt<78>ļ<EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
		return;
	}

	size_t size;
	vector<Course>* vc;
	vc = getAllCourse(connection);
	if (vc == NULL) {
		printf("<EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD>ϢΪ<EFBFBD>գ<EFBFBD>\n");
		outFile.close();
		return;
	}
	outFile << "<EFBFBD>γ̺<EFBFBD>\t<EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD>\n";
	size = vc->size();
	for (size_t i = 0; i < size; i++) {
		outFile << (*vc)[i].toString();
		if (i != (size - 1)) outFile << "\n";
	}
	printf("<EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>course.txt<78>ļ<EFBFBD>!\n");
	outFile.close();
}

void exportGradeData(_ConnectionPtr connection) {
	ofstream outFile("./data/grade.txt", ios::out);
	if (!outFile.is_open()) {
		printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD>grade.txt<78>ļ<EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
		return;
	}

	size_t size;
	vector<Grade>* vg;
	vg = getAllGrade(connection);
	if (vg == NULL) {
		printf("<EFBFBD>ɼ<EFBFBD><EFBFBD><EFBFBD>ϢΪ<EFBFBD>գ<EFBFBD>\n");
		outFile.close();
		return;
	}
	outFile << "ѧ<EFBFBD><EFBFBD>\t<EFBFBD>γ̺<EFBFBD>\t<EFBFBD>ɼ<EFBFBD>\n";
	size = vg->size();
	for (size_t i = 0; i < size; i++) {
		outFile << (*vg)[i].toString();
		if (i != (size - 1)) outFile << "\n";
	}
	printf("<EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>grade.txt<78>ļ<EFBFBD>!\n");
	outFile.close();
}

void exportAllData(_ConnectionPtr connection) {
	exportStudentData(connection);
	exportCourseData(connection);
	exportGradeData(connection);
}



void importData(_ConnectionPtr connection) {
	while (true) {
		try {
			// <20>ļ<EFBFBD><C4BC>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򴴽<EFBFBD><F2B4B4BD>ļ<EFBFBD><C4BC><EFBFBD>
			if (_access("./data", 0) == -1) {
				_mkdir("./data");
			}
			system("cls");
			printf("1.<2E><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ\n");
			printf("2.<2E><><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><CEB3><EFBFBD>Ϣ\n");
			printf("3.<2E><><EFBFBD><EFBFBD><EFBFBD>ɼ<EFBFBD><C9BC><EFBFBD>Ϣ\n");
			printf("4.<2E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ\n");
			printf("0.<2E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>\n");
			int opt = -1;
			checkOptInput(opt, 0, 4);

			printf("\n");

			switch (opt) {
			case 1://<2F><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
				importStudentData(connection);
				break;
			case 2://<2F><><EFBFBD><EFBFBD><EFBFBD>γ<EFBFBD><CEB3><EFBFBD>Ϣ
				importCourseData(connection);
				break;
			case 3://<2F><><EFBFBD><EFBFBD><EFBFBD>ɼ<EFBFBD><C9BC><EFBFBD>Ϣ
				importGradeData(connection);
				break;
			case 4://<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
				importAllData(connection);
				break;
			default://<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
				return;
			}
			system("pause");
		}
		catch (_com_error& err) {
			wprintf(L"<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
			wprintf(L"The application throws the error: %s\n", (wchar_t*)err.ErrorMessage());
			wprintf(L"Description = %s\n", (wchar_t*)err.Description());
			system("pause");
		}
	}
}

void importStudentData(_ConnectionPtr connection) {
	ifstream inFile("./data/student.txt", ios::in);
	if (!inFile.is_open()) {
		printf("<EFBFBD><EFBFBD>ȡstudent.txt<78>ļ<EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
		return;
	}

	string title[5];//<2F><><EFBFBD>ڴ洢<DAB4><E6B4A2>ͷ<EFBFBD><CDB7>ÿ<EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD>
	inFile >> title[0] >> title[1] >> title[2] >> title[3] >> title[4];
	if (!(title[0] == "ѧ<EFBFBD><EFBFBD>" && title[1] == "<EFBFBD><EFBFBD><EFBFBD><EFBFBD>" && title[2] == "<EFBFBD>Ա<EFBFBD>" && title[3] == "<EFBFBD>༶" && title[4] == "״̬")) {
		printf("<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD>쳣<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡʧ<EFBFBD>ܣ<EFBFBD>\n");
		return;
	}

	Student* student = new Student();
	while (!inFile.eof()) {
		inFile >> title[0] >> title[1] >> title[2] >> title[3] >> title[4];
		if (getStudentById(connection, title[0]) == NULL) {
			student->setId(title[0]);
			student->setName(title[1]);
			student->setSex(title[2]);
			student->setStuClass(title[3]);
			student->setStatus(title[4]);
			addStudent(connection, *student);
		}
	}
	printf("<EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>student.txt<78>ļ<EFBFBD>!\n");
	inFile.close();
}

void importCourseData(_ConnectionPtr connection) {
	ifstream inFile("./data/course.txt", ios::in);
	if (!inFile.is_open()) {
		printf("<EFBFBD><EFBFBD>ȡcourse.txt<78>ļ<EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
		return;
	}

	string title[2];//<2F><><EFBFBD>ڴ洢<DAB4><E6B4A2>ͷ<EFBFBD><CDB7>ÿ<EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD>
	inFile >> title[0] >> title[1];
	if (!(title[0] == "<EFBFBD>γ̺<EFBFBD>" && title[1] == "<EFBFBD>γ<EFBFBD><EFBFBD><EFBFBD>")) {
		printf("<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD>쳣<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡʧ<EFBFBD>ܣ<EFBFBD>\n");
		return;
	}

	Course* course = new Course();
	while (!inFile.eof()) {
		inFile >> title[0] >> title[1];
		if (getCourseById(connection, title[0]) == NULL) {
			course->setId(title[0]);
			course->setName(title[1]);
			addCourse(connection, *course);
		}
	}
	printf("<EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>course.txt<78>ļ<EFBFBD>!\n");
	inFile.close();
}

void importGradeData(_ConnectionPtr connection) {
	ifstream inFile("./data/grade.txt", ios::in);
	if (!inFile.is_open()) {
		printf("<EFBFBD><EFBFBD>ȡgrade.txt<78>ļ<EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD>\n");
		return;
	}

	string title[3];//<2F><><EFBFBD>ڴ洢<DAB4><E6B4A2>ͷ<EFBFBD><CDB7>ÿ<EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD>
	inFile >> title[0] >> title[1] >> title[2];
	if (!(title[0] == "ѧ<EFBFBD><EFBFBD>" && title[1] == "<EFBFBD>γ̺<EFBFBD>" && title[2] == "<EFBFBD>ɼ<EFBFBD>")) {
		printf("<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD>쳣<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡʧ<EFBFBD>ܣ<EFBFBD>\n");
		return;
	}

	Grade* grade = new Grade();
	while (!inFile.eof()) {
		inFile >> title[0] >> title[1] >> title[2];
		if (getOnesGrade(connection, title[0], title[1]) == NULL) {
			grade->setStuId(title[0]);
			grade->setCourseId(title[1]);
			grade->setGrade(title[2]);
			addGrade(connection, *grade);
		}
	}
	printf("<EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>grade.txt<78>ļ<EFBFBD>!\n");
	inFile.close();
}

void importAllData(_ConnectionPtr connection) {
	importStudentData(connection);
	importCourseData(connection);
	importGradeData(connection);
}