diff --git a/doc/README.md b/doc/README.md
new file mode 100644
index 0000000..dc45f65
--- /dev/null
+++ b/doc/README.md
@@ -0,0 +1,2 @@
+# teamwork-project
+
diff --git a/src/examwidget.cpp b/src/examwidget.cpp
new file mode 100644
index 0000000..50ef9fc
--- /dev/null
+++ b/src/examwidget.cpp
@@ -0,0 +1,213 @@
+#include "examwidget.h"
+#include <QMessageBox>
+#include <random>
+#include <QGroupBox>
+
+ExamWidget::ExamWidget(QWidget *parent) : QWidget(parent), currentQuestion(0), totalQuestions(0)
+{
+    QVBoxLayout *mainLayout = new QVBoxLayout(this);
+
+    // 进度标签
+    progressLabel = new QLabel();
+    progressLabel->setAlignment(Qt::AlignCenter);
+    progressLabel->setStyleSheet("font-size: 16px; font-weight: bold; margin: 20px; color: #2c3e50;");
+
+    // 题目区域
+    QGroupBox *questionGroup = new QGroupBox("题目");
+    questionGroup->setStyleSheet("QGroupBox {"
+                                "font-size: 16px;"
+                                "font-weight: bold;"
+                                "margin-top: 10px;"
+                                "}"
+                                "QGroupBox::title {"
+                                "subcontrol-origin: margin;"
+                                "subcontrol-position: top center;"
+                                "padding: 0 5px;"
+                                "}");
+
+    QVBoxLayout *questionLayout = new QVBoxLayout(questionGroup);
+
+    questionLabel = new QLabel();
+    questionLabel->setWordWrap(true);
+    questionLabel->setStyleSheet("font-size: 18px; margin: 20px; padding: 10px; background-color: #f8f9fa; border-radius: 5px;");
+    questionLabel->setAlignment(Qt::AlignCenter);
+    questionLabel->setMinimumHeight(80);
+
+    questionLayout->addWidget(questionLabel);
+
+    // 选项区域
+    QGroupBox *optionsGroup = new QGroupBox("请选择答案");
+    optionsGroup->setStyleSheet("QGroupBox {"
+                               "font-size: 16px;"
+                               "font-weight: bold;"
+                               "margin-top: 10px;"
+                               "}"
+                               "QGroupBox::title {"
+                               "subcontrol-origin: margin;"
+                               "subcontrol-position: top center;"
+                               "padding: 0 5px;"
+                               "}");
+
+    QVBoxLayout *optionsLayout = new QVBoxLayout(optionsGroup);
+    optionGroup = new QButtonGroup(this);
+
+    for (int i = 0; i < 4; ++i) {
+        optionButtons[i] = new QRadioButton();
+        optionButtons[i]->setStyleSheet("QRadioButton {"
+                                       "font-size: 14px;"
+                                       "margin: 8px;"
+                                       "padding: 8px;"
+                                       "}"
+                                       "QRadioButton::indicator {"
+                                       "width: 20px;"
+                                       "height: 20px;"
+                                       "}");
+        optionGroup->addButton(optionButtons[i], i);
+        optionsLayout->addWidget(optionButtons[i]);
+    }
+
+    // 按钮区域
+    QWidget *buttonWidget = new QWidget();
+    QHBoxLayout *buttonLayout = new QHBoxLayout(buttonWidget);
+
+    nextButton = new QPushButton("下一题");
+    nextButton->setStyleSheet("QPushButton {"
+                             "background-color: #3498db;"
+                             "color: white;"
+                             "border: none;"
+                             "padding: 10px 20px;"
+                             "font-size: 14px;"
+                             "border-radius: 5px;"
+                             "}"
+                             "QPushButton:hover {"
+                             "background-color: #2980b9;"
+                             "}");
+    nextButton->setFixedWidth(120);
+
+    submitButton = new QPushButton("提交试卷");
+    submitButton->setStyleSheet("QPushButton {"
+                               "background-color: #e74c3c;"
+                               "color: white;"
+                               "border: none;"
+                               "padding: 10px 20px;"
+                               "font-size: 14px;"
+                               "border-radius: 5px;"
+                               "}"
+                               "QPushButton:hover {"
+                               "background-color: #c0392b;"
+                               "}");
+    submitButton->setFixedWidth(120);
+    submitButton->setVisible(false);
+
+    buttonLayout->addStretch();
+    buttonLayout->addWidget(nextButton);
+    buttonLayout->addSpacing(10);
+    buttonLayout->addWidget(submitButton);
+    buttonLayout->addStretch();
+
+    // 添加到主布局
+    mainLayout->addWidget(progressLabel);
+    mainLayout->addWidget(questionGroup);
+    mainLayout->addWidget(optionsGroup);
+    mainLayout->addSpacing(20);
+    mainLayout->addWidget(buttonWidget);
+    mainLayout->addStretch();
+
+    // 连接信号槽
+    connect(nextButton, &QPushButton::clicked, this, &ExamWidget::onNextClicked);
+    connect(submitButton, &QPushButton::clicked, this, &ExamWidget::onSubmitClicked);
+}
+
+void ExamWidget::startExam(Grade grade, int questionCount)
+{
+    questionGenerator.setGrade(grade);
+    questions = questionGenerator.generateQuestions(questionCount);
+    totalQuestions = questionCount;
+    currentQuestion = 0;
+    userAnswers.clear();
+    correctAnswers.clear();
+
+    // 生成正确答案（随机）
+    std::random_device rd;
+    std::mt19937 gen(rd());
+    std::uniform_int_distribution<> dis(0, 3);
+
+    for (int i = 0; i < totalQuestions; ++i) {
+        correctAnswers.push_back(dis(gen));
+    }
+
+    showQuestion(0);
+}
+
+void ExamWidget::showQuestion(int index)
+{
+    if (index < totalQuestions) {
+        currentQuestion = index;
+        progressLabel->setText(QString("第 %1 题 / 共 %2 题").arg(index + 1).arg(totalQuestions));
+
+        // 显示题目
+        QString questionText = QString::fromStdWString(questions[index]);
+        questionLabel->setText(questionText);
+
+        // 生成选项
+        generateOptions();
+
+        // 清除选择
+        optionGroup->setExclusive(false);
+        for (int i = 0; i < 4; ++i) {
+            optionButtons[i]->setChecked(false);
+        }
+        optionGroup->setExclusive(true);
+
+        // 更新按钮状态
+        nextButton->setVisible(index < totalQuestions - 1);
+        submitButton->setVisible(index == totalQuestions - 1);
+    }
+}
+
+void ExamWidget::generateOptions()
+{
+    // 简单实现：一个正确答案，三个随机错误答案
+    int correctIndex = correctAnswers[currentQuestion];
+
+    for (int i = 0; i < 4; ++i) {
+        if (i == correctIndex) {
+            optionButtons[i]->setText("正确答案");
+        } else {
+            optionButtons[i]->setText(QString("选项 %1").arg(i + 1));
+        }
+    }
+}
+
+void ExamWidget::onNextClicked()
+{
+    int selected = optionGroup->checkedId();
+    if (selected == -1) {
+        QMessageBox::warning(this, "提示", "请选择一个答案");
+        return;
+    }
+
+    userAnswers.push_back(selected);
+    showQuestion(currentQuestion + 1);
+}
+
+void ExamWidget::onSubmitClicked()
+{
+    int selected = optionGroup->checkedId();
+    if (selected == -1) {
+        QMessageBox::warning(this, "提示", "请选择一个答案");
+        return;
+    }
+
+    userAnswers.push_back(selected);
+
+    // 计算分数
+    int score = 0;
+    for (int i = 0; i < totalQuestions; ++i) {
+        if (userAnswers[i] == correctAnswers[i]) {
+            score++;
+        }
+    }
+
+    emit examFinished(score, totalQuestions);
+}
diff --git a/src/examwidget.h b/src/examwidget.h
new file mode 100644
index 0000000..f5c90bd
--- /dev/null
+++ b/src/examwidget.h
@@ -0,0 +1,49 @@
+#ifndef EXAMWIDGET_H
+#define EXAMWIDGET_H
+
+#include <QWidget>
+#include <QLabel>
+#include <QRadioButton>
+#include <QButtonGroup>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <vector>
+#include "questiongenerator.h"
+#include "user.h"
+
+class ExamWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit ExamWidget(QWidget *parent = nullptr);
+    void startExam(Grade grade, int questionCount);
+
+signals:
+    void examFinished(int score, int total);
+
+private slots:
+    void onNextClicked();
+    void onSubmitClicked();
+
+private:
+    void showQuestion(int index);
+    void generateOptions();
+
+    QLabel *questionLabel;
+    QLabel *progressLabel;
+    QButtonGroup *optionGroup;
+    QRadioButton *optionButtons[4];
+    QPushButton *nextButton;
+    QPushButton *submitButton;
+
+    QuestionGenerator questionGenerator;
+    std::vector<std::wstring> questions;
+    std::vector<int> userAnswers;
+    std::vector<int> correctAnswers;
+    int currentQuestion;
+    int totalQuestions;
+};
+
+#endif
diff --git a/src/loginwidget.cpp b/src/loginwidget.cpp
new file mode 100644
index 0000000..c4f9339
--- /dev/null
+++ b/src/loginwidget.cpp
@@ -0,0 +1,61 @@
+#include "loginwidget.h"
+
+LoginWidget::LoginWidget(QWidget *parent) : QWidget(parent)
+{
+    QVBoxLayout *layout = new QVBoxLayout(this);
+
+    // 标题
+    QLabel *titleLabel = new QLabel("数学学习软件 - 登录");
+    titleLabel->setAlignment(Qt::AlignCenter);
+    titleLabel->setStyleSheet("font-size: 20px; font-weight: bold; margin: 20px;");
+
+    // 用户名输入
+    QLabel *usernameLabel = new QLabel("用户名:");
+    usernameEdit = new QLineEdit();
+
+    // 密码输入
+    QLabel *passwordLabel = new QLabel("密码:");
+    passwordEdit = new QLineEdit();
+    passwordEdit->setEchoMode(QLineEdit::Password);
+
+    // 按钮
+    loginButton = new QPushButton("登录");
+    registerButton = new QPushButton("注册新账号");
+
+    // 添加到布局
+    layout->addWidget(titleLabel);
+    layout->addWidget(usernameLabel);
+    layout->addWidget(usernameEdit);
+    layout->addWidget(passwordLabel);
+    layout->addWidget(passwordEdit);
+    layout->addWidget(loginButton);
+    layout->addWidget(registerButton);
+
+    // 连接信号槽
+    connect(loginButton, &QPushButton::clicked, this, &LoginWidget::onLoginClicked);
+    connect(registerButton, &QPushButton::clicked, this, &LoginWidget::onRegisterClicked);
+}
+
+void LoginWidget::onLoginClicked()
+{
+    QString username = usernameEdit->text();
+    QString password = passwordEdit->text();
+
+    if (username.isEmpty() || password.isEmpty()) {
+        QMessageBox::warning(this, "输入错误", "请输入用户名和密码");
+        return;
+    }
+
+    User* user = userManager.authenticateUser(username.toStdWString(),
+                                             password.toStdWString());
+    if (user) {
+        emit loginSuccess(user);
+    } else {
+        QMessageBox::warning(this, "登录失败", "用户名或密码错误");
+    }
+}
+
+void LoginWidget::onRegisterClicked()
+{
+    emit showRegister();
+}
diff --git a/src/loginwidget.h b/src/loginwidget.h
new file mode 100644
index 0000000..a1929f0
--- /dev/null
+++ b/src/loginwidget.h
@@ -0,0 +1,36 @@
+#ifndef LOGINWIDGET_H
+#define LOGINWIDGET_H
+
+
+#include <QWidget>
+#include <QLineEdit>
+#include <QPushButton>
+#include <QLabel>
+#include <QVBoxLayout>
+#include <QMessageBox>
+#include "usermanage.h"
+
+class LoginWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit LoginWidget(QWidget *parent = nullptr);
+
+signals:
+    void loginSuccess(User* user);
+    void showRegister();
+
+private slots:
+    void onLoginClicked();
+    void onRegisterClicked();
+
+private:
+    QLineEdit *usernameEdit;
+    QLineEdit *passwordEdit;
+    QPushButton *loginButton;
+    QPushButton *registerButton;
+    UserManager userManager;
+};
+
+#endif
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..7b89e2d
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,17 @@
+#include <QApplication>
+#include "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    // 设置应用程序信息
+    app.setApplicationName("数学学习软件");
+    app.setApplicationVersion("1.0");
+    app.setOrganizationName("软件工程学院");
+
+    MainWindow window;
+    window.show();
+
+    return app.exec();
+}
diff --git a/src/mainmenuwidget.cpp b/src/mainmenuwidget.cpp
new file mode 100644
index 0000000..f8cb0b5
--- /dev/null
+++ b/src/mainmenuwidget.cpp
@@ -0,0 +1,115 @@
+#include "mainmenuwidget.h"
+#include <QMessageBox>
+
+MainMenuWidget::MainMenuWidget(QWidget *parent) : QWidget(parent)
+{
+    QVBoxLayout *mainLayout = new QVBoxLayout(this);
+
+    // 标题和欢迎信息
+    QLabel *titleLabel = new QLabel("数学学习软件");
+    titleLabel->setAlignment(Qt::AlignCenter);
+    titleLabel->setStyleSheet("font-size: 24px; font-weight: bold; margin: 30px; color: #2c3e50;");
+
+    welcomeLabel = new QLabel("欢迎使用数学学习软件");
+    welcomeLabel->setAlignment(Qt::AlignCenter);
+    welcomeLabel->setStyleSheet("font-size: 18px; margin: 20px; color: #34495e;");
+
+    userInfoLabel = new QLabel();
+    userInfoLabel->setAlignment(Qt::AlignCenter);
+    userInfoLabel->setStyleSheet("font-size: 14px; margin: 10px; color: #7f8c8d;");
+
+    // 设置区域
+    QGroupBox *settingsGroup = new QGroupBox("考试设置");
+    settingsGroup->setStyleSheet("QGroupBox {"
+                                "font-size: 16px;"
+                                "font-weight: bold;"
+                                "margin-top: 10px;"
+                                "}"
+                                "QGroupBox::title {"
+                                "subcontrol-origin: margin;"
+                                "subcontrol-position: top center;"
+                                "padding: 0 5px;"
+                                "}");
+
+    QVBoxLayout *settingsLayout = new QVBoxLayout(settingsGroup);
+
+    // 年级选择
+    QWidget *gradeWidget = new QWidget();
+    QHBoxLayout *gradeLayout = new QHBoxLayout(gradeWidget);
+    QLabel *gradeLabel = new QLabel("选择年级:");
+    gradeLabel->setStyleSheet("font-size: 14px;");
+    gradeComboBox = new QComboBox();
+    gradeComboBox->addItem("小学");
+    gradeComboBox->addItem("初中");
+    gradeComboBox->addItem("高中");
+    gradeComboBox->setStyleSheet("padding: 8px; font-size: 14px;");
+    gradeLayout->addWidget(gradeLabel);
+    gradeLayout->addWidget(gradeComboBox);
+    gradeLayout->addStretch();
+
+    // 题目数量
+    QWidget *countWidget = new QWidget();
+    QHBoxLayout *countLayout = new QHBoxLayout(countWidget);
+    QLabel *countLabel = new QLabel("题目数量:");
+    countLabel->setStyleSheet("font-size: 14px;");
+    questionCountSpinBox = new QSpinBox();
+    questionCountSpinBox->setRange(10, 30);
+    questionCountSpinBox->setValue(15);
+    questionCountSpinBox->setStyleSheet("padding: 8px; font-size: 14px;");
+    countLayout->addWidget(countLabel);
+    countLayout->addWidget(questionCountSpinBox);
+    countLayout->addStretch();
+
+    // 开始按钮
+    startButton = new QPushButton("开始考试");
+    startButton->setStyleSheet("QPushButton {"
+                              "background-color: #e74c3c;"
+                              "color: white;"
+                              "border: none;"
+                              "padding: 12px 30px;"
+                              "font-size: 16px;"
+                              "border-radius: 5px;"
+                              "}"
+                              "QPushButton:hover {"
+                              "background-color: #c0392b;"
+                              "}");
+    startButton->setFixedSize(150, 50);
+
+    // 添加到设置布局
+    settingsLayout->addWidget(gradeWidget);
+    settingsLayout->addWidget(countWidget);
+    settingsLayout->addSpacing(20);
+    settingsLayout->addWidget(startButton, 0, Qt::AlignCenter);
+
+    // 添加到主布局
+    mainLayout->addWidget(titleLabel);
+    mainLayout->addWidget(welcomeLabel);
+    mainLayout->addWidget(userInfoLabel);
+    mainLayout->addSpacing(20);
+    mainLayout->addWidget(settingsGroup);
+    mainLayout->addStretch();
+
+    // 连接信号槽
+    connect(startButton, &QPushButton::clicked, this, &MainMenuWidget::onStartExamClicked);
+}
+
+void MainMenuWidget::setUserInfo(const std::wstring& username, const std::wstring& grade)
+{
+    QString userInfo = QString("当前用户: %1 | 年级: %2")
+                      .arg(QString::fromStdWString(username))
+                      .arg(QString::fromStdWString(grade));
+    userInfoLabel->setText(userInfo);
+
+    // 设置年级选择框
+    QString gradeStr = QString::fromStdWString(grade);
+    int index = gradeComboBox->findText(gradeStr);
+    if (index >= 0) {
+        gradeComboBox->setCurrentIndex(index);
+    }
+}
+
+void MainMenuWidget::onStartExamClicked()
+{
+    int questionCount = questionCountSpinBox->value();
+    emit startExam(questionCount);
+}
diff --git a/src/mainmenuwidget.h b/src/mainmenuwidget.h
new file mode 100644
index 0000000..b1563b1
--- /dev/null
+++ b/src/mainmenuwidget.h
@@ -0,0 +1,35 @@
+#ifndef MAINMENUWIDGET_H
+#define MAINMENUWIDGET_H
+
+#include <QWidget>
+#include <QLabel>
+#include <QComboBox>
+#include <QSpinBox>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QGroupBox>
+
+class MainMenuWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit MainMenuWidget(QWidget *parent = nullptr);
+    void setUserInfo(const std::wstring& username, const std::wstring& grade);
+
+signals:
+    void startExam(int questionCount);
+
+private slots:
+    void onStartExamClicked();
+
+private:
+    QLabel *welcomeLabel;
+    QLabel *userInfoLabel;
+    QComboBox *gradeComboBox;
+    QSpinBox *questionCountSpinBox;
+    QPushButton *startButton;
+};
+
+#endif
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
new file mode 100644
index 0000000..bd56583
--- /dev/null
+++ b/src/mainwindow.cpp
@@ -0,0 +1,82 @@
+#include "mainwindow.h"
+
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent), currentUser(nullptr)
+{
+    setWindowTitle("中小学数学学习软件");
+    setFixedSize(600, 400);
+
+    // 创建堆叠窗口
+    stackedWidget = new QStackedWidget(this);
+    setCentralWidget(stackedWidget);
+
+    // 创建各个界面
+    loginWidget = new LoginWidget();
+    registerWidget = new RegisterWidget();
+    mainMenuWidget = new MainMenuWidget();
+    examWidget = new ExamWidget();
+    resultWidget = new ResultWidget();
+
+    // 添加到堆叠窗口
+    stackedWidget->addWidget(loginWidget);
+    stackedWidget->addWidget(registerWidget);
+    stackedWidget->addWidget(mainMenuWidget);
+    stackedWidget->addWidget(examWidget);
+    stackedWidget->addWidget(resultWidget);
+
+    // 连接信号槽
+    connect(loginWidget, &LoginWidget::loginSuccess, this, &MainWindow::onUserLoggedIn);
+    connect(loginWidget, &LoginWidget::showRegister, this, &MainWindow::showRegister);
+    connect(registerWidget, &RegisterWidget::showLogin, this, &MainWindow::showLogin);
+    connect(registerWidget, &RegisterWidget::registerSuccess, this, &MainWindow::onUserLoggedIn);
+    connect(mainMenuWidget, &MainMenuWidget::startExam, this, &MainWindow::showExam);
+    connect(examWidget, &ExamWidget::examFinished, this, &MainWindow::showResult);
+    connect(resultWidget, &ResultWidget::backToMenu, this, &MainWindow::showMainMenu);
+    connect(resultWidget, &ResultWidget::startNewExam, this, &MainWindow::showMainMenu);
+
+    // 显示登录界面
+    showLogin();
+}
+
+MainWindow::~MainWindow()
+{
+}
+
+void MainWindow::showLogin()
+{
+    stackedWidget->setCurrentWidget(loginWidget);
+}
+
+void MainWindow::showRegister()
+{
+    stackedWidget->setCurrentWidget(registerWidget);
+}
+
+void MainWindow::showMainMenu()
+{
+    if (currentUser) {
+        mainMenuWidget->setUserInfo(currentUser->getUsername(),
+                                   currentUser->getGradeString());
+        stackedWidget->setCurrentWidget(mainMenuWidget);
+    }
+}
+
+void MainWindow::showExam(int questionCount)
+{
+    if (currentUser) {
+        examWidget->startExam(currentUser->getGrade(), questionCount);
+        stackedWidget->setCurrentWidget(examWidget);
+    }
+}
+
+void MainWindow::showResult(int score, int total)
+{
+    resultWidget->setResult(score, total);
+    stackedWidget->setCurrentWidget(resultWidget);
+}
+
+void MainWindow::onUserLoggedIn(User* user)
+{
+    currentUser = user;
+    showMainMenu();
+}
diff --git a/src/mainwindow.h b/src/mainwindow.h
new file mode 100644
index 0000000..988d647
--- /dev/null
+++ b/src/mainwindow.h
@@ -0,0 +1,40 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+#include <QStackedWidget>
+#include "loginwidget.h"
+#include "registerwidget.h"
+#include "mainmenuwidget.h"
+#include "examwidget.h"
+#include "resultwidget.h"
+#include "usermanage.h"
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow(QWidget *parent = nullptr);
+    ~MainWindow();
+
+private slots:
+    void showLogin();
+    void showRegister();
+    void showMainMenu();
+    void showExam(int questionCount);
+    void showResult(int score, int total);
+    void onUserLoggedIn(User* user);
+
+private:
+    QStackedWidget *stackedWidget;
+    LoginWidget *loginWidget;
+    RegisterWidget *registerWidget;
+    MainMenuWidget *mainMenuWidget;
+    ExamWidget *examWidget;
+    ResultWidget *resultWidget;
+    UserManager userManager;
+    User *currentUser;
+};
+
+#endif
diff --git a/src/registerwidget.cpp b/src/registerwidget.cpp
new file mode 100644
index 0000000..b80673c
--- /dev/null
+++ b/src/registerwidget.cpp
@@ -0,0 +1,113 @@
+#include "registerwidget.h"
+
+RegisterWidget::RegisterWidget(QWidget *parent) : QWidget(parent)
+{
+    QVBoxLayout *layout = new QVBoxLayout(this);
+
+    // 标题
+    QLabel *titleLabel = new QLabel("用户注册");
+    titleLabel->setAlignment(Qt::AlignCenter);
+    titleLabel->setStyleSheet("font-size: 20px; font-weight: bold; margin: 20px;");
+
+    // 邮箱输入
+    QLabel *emailLabel = new QLabel("邮箱:");
+    emailEdit = new QLineEdit();
+
+    // 注册码
+    QLabel *codeLabel = new QLabel("注册码:");
+    registerCodeEdit = new QLineEdit();
+    registerCodeEdit->setText(generateRegisterCode());
+    registerCodeEdit->setReadOnly(true);
+
+    // 密码输入
+    QLabel *passwordLabel = new QLabel("密码 (6-10位，包含大小写字母和数字):");
+    passwordEdit = new QLineEdit();
+    passwordEdit->setEchoMode(QLineEdit::Password);
+
+    // 确认密码
+    QLabel *confirmPasswordLabel = new QLabel("确认密码:");
+    confirmPasswordEdit = new QLineEdit();
+    confirmPasswordEdit->setEchoMode(QLineEdit::Password);
+
+    // 按钮
+    registerButton = new QPushButton("注册");
+    backButton = new QPushButton("返回登录");
+
+    // 添加到布局
+    layout->addWidget(titleLabel);
+    layout->addWidget(emailLabel);
+    layout->addWidget(emailEdit);
+    layout->addWidget(codeLabel);
+    layout->addWidget(registerCodeEdit);
+    layout->addWidget(passwordLabel);
+    layout->addWidget(passwordEdit);
+    layout->addWidget(confirmPasswordLabel);
+    layout->addWidget(confirmPasswordEdit);
+    layout->addWidget(registerButton);
+    layout->addWidget(backButton);
+
+    // 连接信号槽
+    connect(registerButton, &QPushButton::clicked, this, &RegisterWidget::onRegisterClicked);
+    connect(backButton, &QPushButton::clicked, this, &RegisterWidget::onBackClicked);
+}
+
+void RegisterWidget::onRegisterClicked()
+{
+    QString email = emailEdit->text();
+    QString password = passwordEdit->text();
+    QString confirmPassword = confirmPasswordEdit->text();
+
+    // 邮箱格式验证
+    QRegularExpression emailRegex(R"(^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$)");
+    if (!emailRegex.match(email).hasMatch()) {
+        QMessageBox::warning(this, "输入错误", "请输入有效的邮箱地址");
+        return;
+    }
+
+    // 密码验证
+    if (password != confirmPassword) {
+        QMessageBox::warning(this, "输入错误", "两次输入的密码不一致");
+        return;
+    }
+
+    if (!validatePassword(password)) {
+        QMessageBox::warning(this, "输入错误",
+                            "密码必须为6-10位，且包含大小写字母和数字");
+        return;
+    }
+
+    QMessageBox::information(this, "注册成功", "注册成功！");
+    emit registerSuccess();
+}
+
+void RegisterWidget::onBackClicked()
+{
+    emit showLogin();
+}
+
+bool RegisterWidget::validatePassword(const QString &password)
+{
+    if (password.length() < 6 || password.length() > 10) {
+        return false;
+    }
+
+    bool hasUpper = false, hasLower = false, hasDigit = false;
+    for (QChar ch : password) {
+        if (ch.isUpper()) hasUpper = true;
+        else if (ch.isLower()) hasLower = true;
+        else if (ch.isDigit()) hasDigit = true;
+    }
+
+    return hasUpper && hasLower && hasDigit;
+}
+
+QString RegisterWidget::generateRegisterCode()
+{
+    const QString possibleChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+    QString code;
+    for (int i = 0; i < 8; ++i) {
+        int index = qrand() % possibleChars.length();
+        code.append(possibleChars.at(index));
+    }
+    return code;
+}
diff --git a/src/registerwidget.h b/src/registerwidget.h
new file mode 100644
index 0000000..865ddd9
--- /dev/null
+++ b/src/registerwidget.h
@@ -0,0 +1,40 @@
+#ifndef REGISTERWIDGET_H
+#define REGISTERWIDGET_H
+
+#include <QWidget>
+#include <QLineEdit>
+#include <QPushButton>
+#include <QLabel>
+#include <QVBoxLayout>
+#include <QMessageBox>
+#include <QRegularExpression>
+#include <QRegularExpressionValidator>
+
+class RegisterWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit RegisterWidget(QWidget *parent = nullptr);
+
+signals:
+    void registerSuccess();
+    void showLogin();
+
+private slots:
+    void onRegisterClicked();
+    void onBackClicked();
+
+private:
+    QLineEdit *emailEdit;
+    QLineEdit *registerCodeEdit;
+    QLineEdit *passwordEdit;
+    QLineEdit *confirmPasswordEdit;
+    QPushButton *registerButton;
+    QPushButton *backButton;
+
+    bool validatePassword(const QString &password);
+    QString generateRegisterCode();
+};
+
+#endif
diff --git a/src/resultwidget.cpp b/src/resultwidget.cpp
new file mode 100644
index 0000000..23f9f3e
--- /dev/null
+++ b/src/resultwidget.cpp
@@ -0,0 +1,115 @@
+#include "resultwidget.h"
+
+ResultWidget::ResultWidget(QWidget *parent) : QWidget(parent)
+{
+    QVBoxLayout *mainLayout = new QVBoxLayout(this);
+
+    // 标题
+    QLabel *titleLabel = new QLabel("考试结果");
+    titleLabel->setAlignment(Qt::AlignCenter);
+    titleLabel->setStyleSheet("font-size: 24px; font-weight: bold; margin: 30px; color: #2c3e50;");
+
+    // 结果区域
+    QWidget *resultWidget = new QWidget();
+    QVBoxLayout *resultLayout = new QVBoxLayout(resultWidget);
+    resultLayout->setContentsMargins(50, 30, 50, 30);
+
+    resultLabel = new QLabel("考试完成！");
+    resultLabel->setAlignment(Qt::AlignCenter);
+    resultLabel->setStyleSheet("font-size: 20px; margin: 20px; color: #34495e;");
+
+    scoreLabel = new QLabel();
+    scoreLabel->setAlignment(Qt::AlignCenter);
+    scoreLabel->setStyleSheet("font-size: 36px; font-weight: bold; margin: 20px; color: #e74c3c;");
+
+    percentageLabel = new QLabel();
+    percentageLabel->setAlignment(Qt::AlignCenter);
+    percentageLabel->setStyleSheet("font-size: 18px; margin: 10px; color: #7f8c8d;");
+
+    // 按钮区域
+    QWidget *buttonWidget = new QWidget();
+    QHBoxLayout *buttonLayout = new QHBoxLayout(buttonWidget);
+
+    backButton = new QPushButton("返回主菜单");
+    backButton->setStyleSheet("QPushButton {"
+                             "background-color: #95a5a6;"
+                             "color: white;"
+                             "border: none;"
+                             "padding: 10px 20px;"
+                             "font-size: 14px;"
+                             "border-radius: 5px;"
+                             "}"
+                             "QPushButton:hover {"
+                             "background-color: #7f8c8d;"
+                             "}");
+    backButton->setFixedWidth(120);
+
+    newExamButton = new QPushButton("继续做题");
+    newExamButton->setStyleSheet("QPushButton {"
+                                "background-color: #3498db;"
+                                "color: white;"
+                                "border: none;"
+                                "padding: 10px 20px;"
+                                "font-size: 14px;"
+                                "border-radius: 5px;"
+                                "}"
+                                "QPushButton:hover {"
+                                "background-color: #2980b9;"
+                                "}");
+    newExamButton->setFixedWidth(120);
+
+    buttonLayout->addStretch();
+    buttonLayout->addWidget(backButton);
+    buttonLayout->addSpacing(20);
+    buttonLayout->addWidget(newExamButton);
+    buttonLayout->addStretch();
+
+    // 添加到结果布局
+    resultLayout->addWidget(resultLabel);
+    resultLayout->addWidget(scoreLabel);
+    resultLayout->addWidget(percentageLabel);
+    resultLayout->addSpacing(30);
+    resultLayout->addWidget(buttonWidget);
+
+    // 添加到主布局
+    mainLayout->addWidget(titleLabel);
+    mainLayout->addWidget(resultWidget);
+    mainLayout->addStretch();
+
+    // 连接信号槽
+    connect(backButton, &QPushButton::clicked, this, &ResultWidget::onBackClicked);
+    connect(newExamButton, &QPushButton::clicked, this, &ResultWidget::onNewExamClicked);
+}
+
+void ResultWidget::setResult(int score, int total)
+{
+    double percentage = (double)score / total * 100;
+
+    scoreLabel->setText(QString("%1 / %2").arg(score).arg(total));
+    percentageLabel->setText(QString("正确率: %1%").arg(percentage, 0, 'f', 1));
+
+    // 根据分数显示不同的评价
+    if (percentage >= 90) {
+        resultLabel->setText("优秀！你的表现非常出色！");
+        resultLabel->setStyleSheet("font-size: 20px; margin: 20px; color: #27ae60;");
+    } else if (percentage >= 70) {
+        resultLabel->setText("良好！继续努力！");
+        resultLabel->setStyleSheet("font-size: 20px; margin: 20px; color: #f39c12;");
+    } else if (percentage >= 60) {
+        resultLabel->setText("及格！还有提升空间！");
+        resultLabel->setStyleSheet("font-size: 20px; margin: 20px; color: #e67e22;");
+    } else {
+        resultLabel->setText("需要加油！再多练习一下吧！");
+        resultLabel->setStyleSheet("font-size: 20px; margin: 20px; color: #e74c3c;");
+    }
+}
+
+void ResultWidget::onBackClicked()
+{
+    emit backToMenu();
+}
+
+void ResultWidget::onNewExamClicked()
+{
+    emit startNewExam();
+}
diff --git a/src/resultwidget.h b/src/resultwidget.h
new file mode 100644
index 0000000..0343e7e
--- /dev/null
+++ b/src/resultwidget.h
@@ -0,0 +1,34 @@
+#ifndef RESULTWIDGET_H
+#define RESULTWIDGET_H
+
+#include <QWidget>
+#include <QLabel>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+
+class ResultWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit ResultWidget(QWidget *parent = nullptr);
+    void setResult(int score, int total);
+
+signals:
+    void backToMenu();
+    void startNewExam();
+
+private slots:
+    void onBackClicked();
+    void onNewExamClicked();
+
+private:
+    QLabel *resultLabel;
+    QLabel *scoreLabel;
+    QLabel *percentageLabel;
+    QPushButton *backButton;
+    QPushButton *newExamButton;
+};
+
+#endif