Re: Help Needed

Hi guys. I've been working on a project, to make a basic program to
simulate Internet Banking as closely as possibble. This is just my
first draft of the program. Everything works fine. However I would
appreciate it if anyone could give me some tips to rectify these two
main points:

1. I have used the data type for variable 'money' as float, and it
works fine, but for larger number I would need long. However when I
change the data type to long(for 'money' and 'mn',a second temporary
variable to copy data to 'money'), my program becomes unreliable, i.e.
it shows me runtime error, and does not copy data to file, or reads it
incorrectly. What could be the problem?

2.I would also like for my program to show '*' in place of characters
wherever the user enters his password. Any ideas of how to do that?

               // INTERNET BANKING

#include <fstream.h>
#include <conio.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

class internet_banking
{
    private:

         char name[50];
        char id[50];
        char pword[10];
       float money;

    public:
        void login();
        void create();
        void display();
        void close_acc();
        void logged_in(int);

} a, b;

void main()
{

    clrscr();
    char ch;

     fstream f1;
    f1.open("bank.dat", ios::out | ios::binary | ios::app );

    clrscr();

    cout << "\n\n\n\n\n";
    cout << "\t\t\t$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ \n";
    cout << "\t\t\t$ $ \n";
    cout << "\t\t\t$ Bank of India $ \n";
    cout << "\t\t\t$ $ \n";
    cout << "\t\t\t$ Presents $ \n";
    cout << "\t\t\t$ $ \n";
    cout << "\t\t\t$ Internet Banking $ \n";
    cout << "\t\t\t$ $ \n";
    cout << "\t\t\t$ $ \n";
    cout << "\t\t\t$ Banking Simplified $ \n";
    cout << "\t\t\t$ $ \n";
    cout << "\t\t\t$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ \n\t\t\t\t\t";

     getch();

    flag:

    clrscr();
    cout << "\n\n\n\t\t\t Main Menu";
    cout << "\n\t\t\t_____________________________";
    cout << "\n\n\t\t\t 1. Create an account";
    cout << "\n\n\t\t\t 2. Login to account";
    cout << "\n\n\t\t\t 3. List accounts";
    cout << "\n\n\t\t\t 4. Terminate account";
    cout << "\n\n\t\t\t 5. Exit";
    cout << "\n\n\t\t\t_____________________________";
    cout << "\n\n\t\t\tPlease Enter your choice : ";

    cin >> ch;

    f1.close();
    switch(ch)
    {
        case '1':
            a.create();break;
        case '2':
            a.login();break;
        case '3':
            a.display();break;
        case '4':
            a.close_acc();break;
        case '5':
            exit(0);
        default:
            {
                cout << "\n\n\t\t\t\aERROR:Wrong Input";
                getch();
            }

    }

     goto flag; // takes you to the menu again

}

[remainder redacted]