Funktion wird immer wiederholt

#include <iostream>


using namespace std;


void informationen ()
{
    cout << "\n -------------------------- \n" << endl;
    cout << " Copyright by Pascal Minder" << endl;
    cout << "\n -------------------------- \n" << endl;
}


char einstellungen ()
{
    char name[20];
    cout << "\n ------------- \n" << endl;
    cout <<    " Einstellungen" << endl;
    cout << "\n ------------- \n" << endl;

    cout << "Ihr Name: ";
    cin.get (name, 19);

    return name[20];
}
int main()
{
    int auswahl;
    char name[20];


    do
    {
        cout << "\n Menu" << endl;
        cout << " ------------------" << endl;
        cout << " 1: Spiel Starten" << endl;
        cout << " 2: Einstellungen" << endl;
        cout << " 3: Informationen" << endl;
        cout << " 4: Spiel Beenden" << endl;
        cout << " \nIhre Auswahl: ";
        cin >> auswahl;

        switch (auswahl)
        {
        case (1):
            {
                cout << name << endl;
                //spiel ();
            } break ;


        case (2):
            {
                name[20] = einstellungen ();
            } break ;
        case (3):
            {
                informationen ();
            } break ;
        case (4):
            {
                cout << "Programm beendet.";
            } break ;
        default:
            {
                cout << "Falsche Eingabe!";
            }
        }
    } while (auswahl != 4);    


    return 0;
}