C++，Qt的教务管理系统

登录界面读取本地txt文件，设置2个角色的登录，管理员以及普通用户角色。废话不说。上代码！

 if(ui->comboBox_SF->currentText() == "管理员")
    {
        QString name = ui->lineEdit_ID->text();
        QString password = ui->lineEdit_PWD->text();

        //读取文本文件保存的管理员用户名和密码信息
        QString FileName = QCoreApplication::applicationDirPath() + "/AdminAccount.txt";
        QSettings s(FileName, QSettings::IniFormat);
        QString TrueName = s.value("/name", "admin").toString();
        QString TruePassword = s.value("/password", "admin").toString();

        //判断用户名与密码是否正确
        if((name == TrueName) && (password == TruePassword) && (TrueName != NULL) && (TruePassword != NULL))
        {
           m_mainsence->show();
           this->hide();
        }
        else
        {
            QMessageBox::warning(this,"警告","账号密码错误!",QMessageBox::Yes);
            ui->lineEdit_ID->clear();
            ui->lineEdit_PWD->clear();
        }
    }
    else if(ui->comboBox_SF->currentText() == "普通用户")
    {
        QString name = ui->lineEdit_ID->text();
        QString password = ui->lineEdit_PWD->text();

        //读取文本文件保存的管理员用户名和密码信息
        QString FileName = QCoreApplication::applicationDirPath() + "/AdminAccount.txt";
        QSettings s(FileName, QSettings::IniFormat);
        QString TrueName = s.value("/name", "GaoTian").toString();
        QString TruePassword = s.value("/password", "12345678").toString();

        //判断用户名与密码是否正确
        if((name == TrueName) && (password == TruePassword) && (TrueName != NULL) && (TruePassword != NULL))
        {
           m_studentms->show();
           this->hide();
        }
        else
        {
            QMessageBox::warning(this,"警告","账号密码错误!",QMessageBox::Yes);
            ui->lineEdit_ID->clear();
            ui->lineEdit_PWD->clear();
        }
    }

管理员界面

普通用户可以预约教室等功能