Question

I am having trouble reading data from a file into a list in a class. It seems like an extra hexadecimal value is being picked up somewhere.

Data: (what I want output to look like)

Output: (extra 0x4463c4 is randomly included)

Here is a bit of code i think is relevant. Can anyone advise me of errors I may have made?

Where data is read into program from file (main):

struct filmType
{
     char number[6];
     char copy;
     char title[31];
     char rent_id[5];
     char rent_date[9];
     char return_date[9];
};


orderedList <filmType> orderedList;
    filmType newItem;

    //start of struct record
    filmFile.open("films.txt", ios::in);
    filmFile >> numFilm;
    filmFile.get();

    while (!filmFile.eof())
    {
         filmData.copy = filmFile.get();
         readString(filmFile, newItem.title,30);
         readString(filmFile, newItem.rent_id,4);
         readString(filmFile, newItem.rent_date,8);
         readString(filmFile, newItem.return_date,8);
         filmFile.get();

         orderedList.insert (newItem);

         readString(filmFile, filmData.number,5);
    }

orderedlist.insert function:(fills list in class)

void orderedList<elemType>::insert(const elemType& newItem)
{
     int index = length - 1;
     bool found = false;

     if (length == MAX_LIST)
         throw string ("List full - no insertion");

         // index of rear is current value of length

     while (! found && index >= 0)
        if (newItem < list[index])
        {
            list[index + 1] = list [index];  // move item down
            --index;
        }
        else
            found = true;

     list [index + 1] = newItem;  // insert new item
     ++length;
}

Orderedlist.display function: (outputs list to console)

void orderedList<elemType>::display() const
{
    int index;

    if (length == 0)
        throw string ("List empty");

    for (index = 0; index < length; ++ index)
        cout << list[index] << endl;
}

readString:

void readString (fstream & inFile, char * string, int length)
{
    inFile.get (string, length + 1);
}

Any help is appreciated, let me know if anything needs to be clarified or if more code from the program needs to be seen. Thanks!

Answer 1

You’re passing structs objects to cout, which doesn’t know how to display them. The hex values you get are your structs objects addresses.