How to promt the user correctly?

Question

I try to write an employee main file and met with one problem. I can not add an answer for the second question which I try to promt from user. If I change the places between the first question: cout << "\nEnter a percent raise: "; and the second question: cout << "\nEnter a new surname: "; everything works fine, but it not what I need. Could you please help me ?

#include <iostream>
#include "Employee.h"
#include <string>

using namespace std;

int main()
{
    //Create two employees
    Employee e1{ "John", "Doe", 1234.56 };
    Employee e2{ "Jane", "Jones", 7890.12 };

    //Display employee's info
    cout << "Employee e1: " << e1.getName() << ", " << e1.getSurname() << ", " << e1.getSalary() << endl;
    cout << "Employee e2: " << e2.getName() << ", " << e2.getSurname() << ", " << e2.getSalary() << endl;


    //Give a permanent raise to both employee
    cout << "\nEnter a percent raise: ";
    double annualraise;
    cin >> annualraise;
    e1.setRaise(annualraise), e2.setRaise(annualraise);
    cout << "Employee e1: " << e1.getName() << ", " << e1.getSurname() << ", " << e1.getSalary() << endl;
    cout << "Employee e2: " << e2.getName() << ", " << e2.getSurname() << ", " << e2.getSalary() << endl;
    

    //Change Jane's last name to "Doe"
    cout << "\nEnter a new surname: ";
    string theSurname;
    getline(cin, theSurname);
    e2.setSurname(theSurname);
    cout << "Employee e2: " << e2.getName() << ", " << e2.getSurname() << ", " << e2.getSalary() << endl;
    
    return 0;
}

//IMPLEMENTATION FILE (Employee.cpp)

#include "Employee.h"
#include <string>
using namespace std;
#include <iostream>


Employee::Employee(std::string employeeName, std::string employeeSurname, double monthlySalary)
    :name{employeeName}, surname{employeeSurname}, salary{monthlySalary}
{
}

void Employee::setName(std::string employeeName)
{
    name = employeeName;
}

string Employee::getName() const
{
    return name;
}

void Employee::setSurname(std::string employeeSurname)
{
    surname = employeeSurname;
}

string Employee::getSurname() const
{
    return surname;
}

void Employee::setRaise(double raise)
{
    if (raise >= 0)
    {
        salary = (salary * raise) + salary;
    }
    else
        cout << "Wrong integer";
}

double Employee::getSalary() const
{
    return salary * 12;
}