// update balance in record
void updateRecord( fstream &updateFile )
{
// obtain number of account to update
int accountNumber = getAccount( "Enter account to update" );
// move file-position pointer to correct record in file
updateFile.seekg( ( accountNumber - 1 ) * sizeof( ClientData ) );
// read first record from file
ClientData client;
updateFile.read( reinterpret_cast< char * >( &client ),
sizeof( ClientData ) );
// update record
if ( client.getAccountNumber() != 0 )
{
outputLine( cout, client ); // display the record
// request user to specify transaction
cout << "\nEnter charge (+) or payment (-): ";
double transaction; // charge or payment
cin >> transaction;
// update record balance
double oldBalance = client.getBalance();
client.setBalance( oldBalance + transaction );
outputLine( cout, client ); // display the record
// move file-position pointer to correct record in file
updateFile.seekp( ( accountNumber - 1 ) * sizeof( ClientData ) );
// write updated record over old record in file
updateFile.write( reinterpret_cast< const char * >( &client ),
sizeof( ClientData ) );
} // end if
void ClientData::searchAccount()
{
ifstream indatabase("ATM.txt", ios::in | ios::binary);
// exit program if ifstream cannot open file
if (!indatabase )
{
cerr << "File could not be opened." << endl;
exit( 1 );
} // end if
cout << left << setw( 10 ) << "Account" << setw( 16 )
<< setw( 11 ) << "User Name" << left
<< setw( 10 ) << right << "Balance" << endl;
ClientData database; // create record
indatabase.read(reinterpret_cast< char *>(&database),
sizeof(ClientData));
// read all records from fil e
while (indatabase && !indatabase.eof() )
{
// display record
if ( database.getAccountNumber() != 0 )
//outputLine(cout, client);
indatabase.read(reinterpret_cast < char *>(&database),
sizeof(ClientData));
} // end while
} // end search record
// create formatted text file for printing
void createTextFile(fstream &readFromFile)
{
// create text file
ofstream outPrintFile("print.txt", ios::out);
// exit program if ofstream cannot create file
if (!outPrintFile)
{
cerr << "File could not be created" << endl;
exit(1);
} // end if
outPrintFile << left << setw(10) << "Account" << setw(16)
<< "Last name" << setw(11) << "First Name" << right << setw(10)
<< "Balance" << endl;
// ** SET FILE POSITION POINTER TO BEGINNING OF readFromFile
readFromFile.seekg(0);
// read first record from record file
ClientData client;
readFromFile.read( reinterpret_cast<char *>(&client), sizeof ( ClientData) );
// copy all records from record file into text file
while (!readFromFile.eof() ) // While not the end of file
{
// Write single record to text file
if (client.getAccountNumber() != 0) // skip empty records
outputLine(outPrintFile, client);
// read next record from record file
readFromFile.read(reinterpret_cast<char * >(&client), sizeof( ClientData ) );
} // end while
} // end function createTextFile
int main()
{
ifstream inCredit( "credit.dat", ios::in | ios::binary );
// exit program if ifstream cannot open file
if ( !inCredit )
{
cerr << "File could not be opened." << endl;
exit( 1 );
} // end if
cout << left << setw( 10 ) << "Account" << setw( 16 )
<< "Last Name" << setw( 11 ) << "First Name" << left
<< setw( 10 ) << right << "Balance" << endl;
ClientData client; // create record
// read first record from file
inCredit.read( reinterpret_cast< char * >( &client ),
sizeof( ClientData ) );
// read all records from file
while ( inCredit && !inCredit.eof() )
{
// display record
if ( client.getAccountNumber() != 0 )
outputLine( cout, client );
// read next from file
inCredit.read( reinterpret_cast< char * >( &client ),
sizeof( ClientData ) );
} // end while
} // end main
// display single record
void outputLine( ostream &output, const ClientData &record )
{
output << left << setw( 10 ) << record.getAccountNumber()
<< setw( 16 ) << record.getLastName()
<< setw( 11 ) << record.getFirstName()
<< setw( 10 ) << setprecision( 2 ) << right << fixed
<< showpoint << record.getBalance() << endl;
} // end function outputLine
// create account
void ClientData::createAccount ()
{
int accountNumber;
int pinCode;
string UserName;
double balance;
fstream outdatabase( "ATMData.txt", ios::in | ios::out | ios::binary );
// exit program if fstream cannot open file
if (!outdatabase)
{
cerr << "File could not be opened." << endl;
exit( 1 );
} // end if
cout << "Enter account number (1 to 10000, 0 to end input)\n? ";
// require user to specify account number
ClientData database;
cin >> accountNumber;
// user enters information, which i copied into file
while ( accountNumber > 0 && accountNumber <= 10000 )
{
// user enters pin code, user name, and balance
cout << "Enter Pin code, User name, balance\n? ";
cin >> pinCode;
cin >>UserName;
cin >> balance;
// set record accountNumber, pincode, UserName, balance values
database.setAccountNumber( accountNumber ) ;
database.setPinCode(pinCode);
database.setUserName( UserName );
//database.setFirstName( firstName ) ;
database.setBalance( balance );
// seek position in file of user-specified record
outdatabase.seekp( ( database.getAccountNumber() - 1 ) *
sizeof( ClientData ) ) ;
// enable user to enter another account
cout << "Enter account number\n? ";
cin >> accountNumber;
} // end while
} // end save data to file
int main()
{
int accountNumber;
string lastName;
string firstName;
double balance;
fstream outCredit( "credit.dat", ios::in | ios::out | ios::binary );
// exit program if fstream cannot open file
if ( !outCredit )
{
cerr << "File could not be opened." << endl;
exit( EXIT_FAILURE );
} // end if
cout << "Enter account number (1 to 100, 0 to end input)\n? ";
// require user to specify account number
ClientData client;
cin >> accountNumber;
// user enters information, which is copied into file
while ( accountNumber > 0 && accountNumber <= 100 )
{
// user enters last name, first name and balance
cout << "Enter lastname, firstname, balance\n? ";
cin >> lastName;
cin >> firstName;
cin >> balance;
// set record accountNumber, lastName, firstName and balance values
client.setAccountNumber( accountNumber );
client.setLastName( lastName );
client.setFirstName( firstName );
client.setBalance( balance );
// seek position in file of user-specified record
outCredit.seekp( ( client.getAccountNumber() - 1 ) *
sizeof( ClientData ) );
// write user-specified information in file
outCredit.write( reinterpret_cast< const char * >( &client ),
sizeof( ClientData ) );
// enable user to enter another account
cout << "Enter account number\n? ";
cin >> accountNumber;
} // end while
} // end main
void createPrimary(istream& read, ostream& primary){
int number,byte = 0;
map<int,int> mymap;
PrimaryIndex p;
ClientData client;
read.clear();
read.seekg(0);
primary.seekp(0);
if(read.eof())return;
read >> client;
while(!read.eof()){
if(number = client.getAccountNumber()){
mymap[number] = byte;
byte = read.tellg();
}
read >> client;
}
for(map<int,int>::iterator it = mymap.begin(); it != mymap.end(); it++){
p.AccountNumber = it->first;
p.Byte = it->second;
primary.write(reinterpret_cast<char*>(&p), sizeof(PrimaryIndex));
}
}