Вызов метода Setinfo для вектора

#include <iostream>
#include <cstdlib>
#include <cstring>
#include <vector>
using namespace std;
 
class Worker
{
private:
    int id;
    string sm;
    string name;
    string patronymic;
    string post;
    int hours;
    double payhour;
    double salary;
    
public:
    Worker()
    {
        id = hours = payhour = salary = 0;
    }
    
    Worker(int id, string sm, string name, string patronymic, string post, int hours, double payhour, double salary)
    {
        this->id = id;
        this->sm = sm;
        this->name = name;
        this->patronymic = patronymic;
        this->post = post;
        this->hours = hours;
        this->payhour = payhour;
        this->salary = salary;
    }
    
    void SetInfo();
    void GetInfo();
    void ListFunc();
};
 
int main()
{
    setlocale(LC_ALL, "ru");
    
    char action;
    Worker obj;
    vector <Worker> w;
    
    do
    {   
        cout << "Choose action\n";
        obj.ListFunc();
        cout << ": ";
        cin >> action;
        
        switch(action)
        {
            case 'n':
            {
                w.push_back(SetInfo());
                
                break;
            }
            case 'v':
            {
                cout << "\n\nWorker data\n" << endl;
                cout << "ID  Surname\tName\tPatronymic\tPost\th/pay\tHours\tSalary\n";
                cout << "--------------------------------------------------------------------------\n";
                
                for(int i = 0; i < w.size(); i++)
                    w[i].GetInfo();
 
                break;
            }
        }
        
        cout << endl << endl;
        
    }while(action != 'q');
    
    system("pause");
    return 0;
}
 
void Worker::SetInfo()
{
    cout << "\nEnter data \nID: ";
    cin >> id;
    cin.ignore();
    cout << "Surname: ";
    getline(cin, sm);
    cout << "Name: ";
    getline(cin, name);
    cout << "Patronymic: ";
    getline(cin, patronymic);
    cout << "Post: ";
    getline(cin, post);
    cout << "Number of hours: ";
    cin >> hours;
    cout << "Cost 1 hour: ";
    cin >> payhour;
    salary = hours * payhour;
}
 
void Worker::ListFunc()
{
    cout << "N - New worker" << endl;
    cout << "E - Edit data" << endl;
    cout << "F - Find worker" << endl;
    cout << "D - Delete data" << endl;
    cout << "S - Save to file" << endl;
    cout << "L - Load from file" << endl;
    cout << "V - Show all workers" << endl;
    cout << "C - Cort data" << endl;
    cout << "Q - Quit" << endl;
}
 
void Worker::GetInfo()
{
    cout << id << "  " << sm << "\t" << name << "\t " << patronymic << "\t" << post << "\t  " << payhour << "\t " << hours << "\t" << salary;
    cout << endl << endl;
}

w.push_back(obj.SetInfo());

obj.SetInfo();
w.push_back(obj);