C++:切换语句实现

我正在尝试在程序的主要部分使用 switch 语句，这是我所拥有的......

main()
int userOption;
while (userOption=!0)
{

cout<<"BUSINESS MANAGEMENT system <16102868>"<<endl;
cout<<"-------------------------------------"<<endl;
cout<<"EMPLOYEE OPTIONS"<<endl;
cout<<"1. Add Employee"<<endl;
cout<<"2. Edit Employee"<<endl;
cout<<"3. Layoff Employee"<<endl;
cout<<"4. View Employee List"<<endl;
cout<<"----------------------------------"<<endl;
cout<<"SCHEDULING OPTIONS"<<endl;
cout<<"5. Update Schedule"<<endl;
cout<<"6. Cancel Schedule"<<endl;
cout<<"7. View Schedule"<<endl;
cout<<"8. Export Schedule to CSV"<<endl;
cout<<"9. Export Schedule to HTML"<<endl;
cout<<"---------------------------------"<<endl;
cout<<"0. Quit"<<endl;
cout<<"----------------------------------"<<endl;
cout<<"Please enter an option:"
cin>>userOption
switch (userOption)
{
case 1:
    AddEmployee()
        break;
case 2:
    EditEmployee()
        break;
case 3:
    LayoffEmployee()
        break;
case 4:
    DisplayEmployeeList()
        break;
case 5:
    AddSchedule()
        break;
case 6:
    CancelSchedule()
        break;
case 7:
    DisplaySchedule()
        break;
case 8:
    ExportScheduleCSV()
        break;
case 9:
    ExportScheduleHTML()
        break;
default:
    cout<<"Enter a number between 1 and 9:"<<endl;
}

不太清楚我在这里哪里出错了。这是具有我在其中调用的上述大多数函数的代码......

class EmployeeHandler
{
  public:
    void AddEmployee()
    {
      std::string firstName;
      std::string lastName;
      float payRate;
      std::cout<<"NEW EMPLOYEE"<<std::endl;
      std::cout<<"First Name:"<<std::endl;
      std::cin>>firstName;
      std::cout<<"Last Name:"<<std::endl;
      std::cin>>lastName;
      std::cout<<"Pay Rate:"<<std::endl;
      std::cin>>payRate;
      employees_.push_back( Employee( firstName,lastName,payRate ) );
      std::cout<<"**Employee m_employeeCount added"<<std::endl;
    }
    void EditEmployee()
    {
      std::string newFirst;
      std::string newLast;
      float newPay;
      std::cout<<"Which employee would you like to edit"<<std::endl;
      int indexEdit = GetSelection();
      Employee& employee = employees_[indexEdit];
      std::cout << employee << std::endl;
      std::cout<<"Employee new first name:"<<std::endl;
      std::cin>>newFirst;
      std::cout<<"Employee new last name:"<<std::endl;
      std::cin>>newLast;
      std::cout<<"Employee new pay rate:"<<std::endl;
      std::cin>>newPay;
      employee = Employee( newFirst, newLast, newPay );
      std::cout<<"** Employee index updated"<<std::endl;
    }
    void LayoffEmployee()
    {
      int index = GetSelection();
      if( employees_[index].GetIsActive() )
      {
        std::cout << "Laying off employee:n" << employees_[index] << std::endl;
        employees_[index].LayOff();
      }
      else
      {
        std::cerr << "Already layed off employee:" << employees_[index] << std::endl;
      }
    }
    void DisplayEmployeeList()
    {
      std::copy( employees_.begin(), employees_.end(), std::ostream_iterator<Employee>( std::cout, "n" ) );
    }
    int GetSelection()
    {
        std::size_t indexNumber;
        std::cout << "Select an employee from the list below by specifying its number:" << std::endl;
        DisplayEmployeeList();
        do{
          while( !std::cin >> indexNumber )
          {
            std::cerr << "Select a number..." << std::endl;
          }
          if( indexNumber >= employees_.size() )
          {
            std::cerr << "Select a number within range of list below:" << std::endl;
            DisplayEmployeeList();
          }
        }
        while( indexNumber >= employees_.size() );
        return indexNumber;
    }
    Employee& operator[]( std::size_t index )
    {
      return employees_[index];
    }
    const Employee& operator[]( std::size_t index ) const
    {
      return employees_[index];
    }
    std::size_t EmployeeCount() const
    {
      return employees_.size();
    }
  private:
    std::vector<Employee> employees_;
};