Page 388 - C++

else
row++ ;
} }
if (!found)
{
gotoxy(5,10) ;
cout<<"\7Records not found" ;
}
if (!flag)
{
gotoxy(5,23) ;
cout <<"Press any key to continue. .." ;
getch() ;
}
file.close() ;
}
//---------------------------------------------------------------------------
// THIS FUNCTION DELETES PASSANGER RECORDS FOR THE GIVEN
// TICKET NO.
//---------------------------------------------------------------------------
void PASSANGER :: DELETE_TICKET(int tno)
{
fstream file ;
file.open("PASS.DAT", ios ::in|ios::binary) ;
fstream temp ;
temp.open("temp.dat", ios ::out|ios::binary) ;
file.seekg(0,ios::beg) ;
while (!file.eof())
{
file.read((char *) this, sizeof(PASSANGER)) ;
if (file.eof())
break ;
if (tno != ticketno)
temp.write((char *) this, sizeof(PASSANGER)) ;
}
file.close() ;
temp. close () ;
file.open("PASS.DAT", ios::out|ios::binary) ;
temp.open("temp.dat", ios::in|ios::binary) ;
temp.seekg(0,ios::beg) ;
while ( !temp.eof() )
{
temp. read ((char *) this, sizeof(PASSANGER)) ;
if ( temp.eof () )
break ;
file.write((char *) this, sizeof(PASSANGER)) ;
}
file.close() ;
temp. close () ;
}
//---------------------------------------------------------------------------
// THIS FUNCTION DELETES ALL PASSANGER RECORDS FOR THE GIVEN
// FLIGHT NO.
//---------------------------------------------------------------------------
int PASSANGER :: DELETE_FLIGHT(int sno)
{
fstream file ;
file.open("PASS.DAT", ios ::in|ios::binary) ;
fstream temp ;
temp.open("temp.dat", ios ::out|ios::binary) ;
file.seekg(0,ios ::beg) ;
int found = 0 ;
while (!file.eof())
{