int main(){
    fstream plik;
    plik.open("dane.txt", ios::out);
    
    plik << "Aaaaan";
    plik << "Aaaaa";
    
    plik.close();   
    
    plik.open("dane.txt", ios::in);
    
    while(!plik.eof()){
        string linia;
        plik >> linia;
        cout << linia << " ";
    }
    plik.close();
    
    plik.open("dane.txt", ios::out);
    
    plik << "Baaaa";
    
    
}

i wanted to add text to an already created file, dunno why but append isnt working or im doing smth not properly

I wanted to add text (“Baaaa”) to a file that i created with this program before