为什么我不能成功地将文件数据读取到结构数组

我正在为我的c++期末考试编写一个基于战列舰棋盘游戏的程序，我目前正在研究的问题是如何管理用户帐户。我必须允许用户每次玩游戏时使用相同的帐户，并记录他们的赢/输记录。我能够将数据写入文件，但我需要在玩家登录时读取它，然后对其进行排序以找到他们的用户名。我被卡在这部分了。

这是一个我正在使用的文件，它的读取作为用户名，赢，输:

Rocky 0 0
Bob 0 0
dave 0 0
Jerry 0 0
Bert 0 0
Ernie 0 0
Marcus 0 0

编辑:这是我重复了很多次的输出，尽管

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//begin create/find account function
userData createAccount(userData ud){
    //local variables
    int playerOption;
    //creates object to open files
    ifstream infile;
    //creates object to open files
    ofstream outfile;
    do {
        cout << "Do you have an existing account?" << endl;
        cout << "" << endl;
        cout << "Enter 1 for yes or 2 for no:" << endl;
        cin >> playerOption;
    }
    while (playerOption >= 3 || playerOption <= 0);

    if (playerOption == 1){
        cout << "Enter user name:" << endl;
        cin >> ud.name;
        //opens file in read mode
        infile.open("userData.dat");
        //tests to make sure the file is open
        if (!infile){
            cout << "File open failure!";
        }

        //creates array of user data
        userData userDataArray [SIZE];
        //reads data from file into array until end of file
        int i=0;
        while(i<SIZE){
            infile >> userDataArray[i].name;
            infile >> userDataArray[i].wins;
            infile >> userDataArray[i].losses;
            i++;
        }
        ///test output
        int j=0;
        while (j<SIZE){
            cout << userDataArray[j].name << endl;
            cout << userDataArray[j].wins << endl;
            cout << userDataArray[j].losses << endl;
            j++;
        }
        //end test output

        //closes file
        infile.close();
    }
    else if(playerOption == 2){
        cout << "Enter user name:" << endl;
        cin >> ud.name;
        ud.wins = 0;
        ud.losses = 0;
        //opens file in write mode
        outfile.open("userData.dat",ios::app);
        //tests to make sure the file is open
        if (!outfile){
            cout << "File open failure!";
        }
        //writes userData struct to file
        outfile << ud.name << " " << ud.wins << " " << ud.losses << endl;
        //closes file
        outfile.close();
    }
    return ud;
//end create/find account function
}