# include <iostream.h>
# include <fstream.h>
# include <iomanip.h>

class LIST
{
            char name[10];
int billno;
int amount_debited;
int received_amount;
int balance;
public:
            void getdata (void)
            {
                                    cout << “Enter name: “; cin >> name;
                                    cout << “Enter billno: “; cin >> billno;
                        cout << “Enter amount_debited: “; cin >> amount_debited;
cout << “Enter received_amount: “;
cin >> received_amount;
                                    cout << “Enter balance: “; cin >> balance;

                        }
            void putdata (void)
                        {
                        cout << setw (10) << name
                        << setw (10) << billno
                        << setw (10) << amount_debited
                        << setw (10) << received_amount
                        << setw (10) << balance
            }
};

int main ()
{
            List item;
            fstream inoutfile;
            inoutfile.open (“Person.DAT”, ios: : ate | ios: : in | ios: : out | ios: : binary);
            inoutfile.seekg (0,ios : : beg);
cout << “PERSON LIST” << “\n”;
while(inoutfile.read ((char *) & item, sizeof item))
{
            item.putdata ();
}
inoutfile.clear ();
/* Add one more Item */
cout<<”\n Add an Item\n”;
item.getdata ();
char ch;
cin.get(ch);
inoutfile.write((char *)&item,sizeof item);
inoutfile.seekg(0);
cout<<”CONTENTS OF APPEND FILE \n”;
while(inoutfile.read((char *) &item,sizeof item))
{
item.putdata();
}

/*  Modify the details of a person  */
cout <<”Enter object number to be updated \n”;
int object;
cin>> object;
cin.get (ch);
int location=(object-1)*sizeof(item);
if(inoutfile.eof())
inoutfile.clear();
inoutfile.seekp (location);
cout<<”Enter new values of the object”;
item.getdata();
cin.get(ch);
inoutfile.write((char *)*item,sizeof item)<<flush;

/* show updated file */
inoutfile.seekg (0);
cout << “Contents of updated file”;
while(inoutfile.read((char *)&item,sizeof item))
{
item.putdata();
}
inoutfile.close ();
return 0;
}