int main ()
{
    inventory item;

    fstream file;

    file.open("stock.dat",ios::ate|ios::in | ios::out |ios::binary );

    file.seekg(0,ios::beg);

    cout<<"Current contents of stock\n";

    while(file.read((char *) &item,sizeof (item)))
    {
        item.putdata();
    }

    file.clear();