Revised Addphone

void Admin::Add_phone()
{
    cout<<"Enter The Types of Phone You want to Add"<<endl;
    cout<<"1.Featured phone"<<endl;
    cout<<"2.Midranged phone"<<endl;
    cout<<"3.Flagship phone"<<endl;
    cout<<"4.Appple Phone"<<endl;
    cout<<"0.Exit"<<endl;
    int choice;
    cin>>choice;
    if(choice==1)
    {
        int type=1;
        fin.open("Mobilelist.csv",ios::in|ios.app);
        cout<<"Enter the Brand of phone"<<endl;
        cin>>brand;
        cout<<"Enter the model of Phone"<<endl;
        cin>>model;
        cout<<"Enter the Price of phone"<<endl;
        cin>>price;
        cout<<"Enter the battery of phone"<<endl;
        cin>>battery;
        fout<<type<<","<<brand<<","<<price<<","<<model<<endl;
    }
    else
    {
        fstream fin;
            fin.open("Mobilelist.csv",ios::in|ios::app);
            string brand,networktype,displaytype,displaysize;
            string battery;
            string simtype,platform;
            string ram,rom;
            string price;
            string  camera;
            string android_version,extmemory;
            cout<<"Enter the Name of Brand"<<endl;
            cin>>brand;
            cout<<"Enter The Details Below"<<endl;
            cout<<"battery"<<endl;
            cin>>battery;
            cout<<"Networktype"<<endl;
            cin>>networktype;
            cout<<"Display type and Displaysize"<<endl;
            cin>>displaytype>>displaysize;
            cout<<"Sim type"<<endl;
            cin>>simtype;
            cout<<"Platform"<<endl;
            getline(cin,platform);
            cout<<"Ram and Rom"<<endl;
            cin>>ram>>rom;
            getchar();
            cout<<"Enter Camera Details"<<endl;
            getline(cin,camera);
            cout<<"Android Version or Ios Version"<<endl;
            cin>>android_version;
            cout<<"External Memory"<<endl;
            cin>>extmemory;
            cout<<"Enter the price"<<endl;
            cin>>price;
            fin<<choice<<","<<brand<<","<<price<<","<<model<<","<<ram<<","<<rom<<","<<battery<<","<<camera<<","<<networktype<<","<<displaytype<<","<<displaysize<<","
            <<simtype<<","<<platform<<","<<android_version<<","<<extmemory<<endl;
            fin.close();
    }
}