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Turbo C - ATM Program

#include<stdio.h>
#include<conio.h>
#include<dos.h>

/* Programmed by Harvey Losin */
/* http://www.bikoy.com/harvey */
/* webmaster@bikoy.com */

main()
{
char ch,option, exit_option;
float pin1, pin2, pin3, pin4, pin5;
float bal1, bal2, bal3, bal4, bal5;
float pin, amnt_deposit, amnt_wthdrw, balance;

repeat1:

clrscr();
gotoxy(31,2);
printf("===================");
gotoxy(31,3);
printf("= ATM MACHINE =");
gotoxy(31,4);
printf("===================");
gotoxy(7,23);
printf("GRP9 : SY2002-2003 1st Sem Midterm : COME211 M-F 8:45-9:45 Ms. Mari");
gotoxy(35,12);
printf("enter PIN: ");
scanf("%f",&pin);

pin1=11111; bal1=0.00;
pin2=22222; bal2=0.00;
pin3=33333; bal3=0.00;
pin4=44444; bal4=0.00;
pin5=55555; bal5=0.00;
balance=0;

{
if(pin==pin1 || pin==pin2 || pin==pin3 || pin==pin4 || pin==pin5)
{
gotoxy(30,12);
printf("*** PIN accepted! ***");
delay(100);
delay(100);
goto menu_deposit;
}
else
{
gotoxy(20,12);
printf("*** Invalid PIN! Please try again... ***");
getch();
goto repeat1;
}
}

menu:
{
clrscr();

gotoxy(28,7);
printf(" Pick-A-Choice:");
gotoxy(28,8);
printf(" [1] Deposit");
gotoxy(28,9);
printf(" [2] Withdraw");
gotoxy(28,10);
printf(" [3] Inquire");
gotoxy(28,11);
printf(" [4] Exit");
gotoxy(28,12);
printf(" choice: ");
option=getche();

switch(option)
{

case '1':
{
menu_deposit:
clrscr();
gotoxy(34,2);
printf("[ DEPOSIT ]");
gotoxy(22,9);
printf("how much would you like to deposit?");
gotoxy(22,10);
printf("amount: P");
scanf("%f",&amnt_deposit);
balance=balance+amnt_deposit;
delay(100);
delay(100);
gotoxy(22,12);
printf("Deposit confirmed!!!");
delay(100);
delay(100);
gotoxy(22,12);
printf("P%.2f was added to your account.",amnt_deposit);
delay(100);
gotoxy(22,17);
printf("Press any key to proceed...");
getch();
goto menu;
}

case '2':
{
rewthdrw:
clrscr();
gotoxy(34,2);
printf("[ WITHDRAWAL ]");
gotoxy(22,6);
printf("How much would you like to withdraw?");
gotoxy(22,7);
printf("amount: P");
scanf("%f",&amnt_wthdrw);
if(amnt_wthdrw>balance)
{
delay(100);
gotoxy(22,9);
printf("Sorry, but you you have insufficient funds in your account.");
getch();
goto rewthdrw;
}
if(amnt_wthdrw<100)
{
delay(100);
gotoxy(22,9);
printf("This machine does not allow withdrawals less than P100.");
getch();
goto rewthdrw;
}
balance=balance-amnt_wthdrw;
gotoxy(22,9);
printf("Transaction in progress...");
delay(100);
delay(100);
delay(100);
gotoxy(22,9);
printf("Get you cash and transaction slip...");
delay(100);
delay(100);
delay(100);
gotoxy(22,11);
printf("Thank you for banking with us!");
delay(100);
gotoxy(22,15);
printf("Press any key to proceed...");
getch();
goto menu;
}

case '3':
{
clrscr();
gotoxy(28,2);
printf("[ BALANCE INQUIRY ]");
gotoxy(22,9);
printf("Transaction in progress...");
delay(100);
delay(100);
delay(100);
gotoxy(22,9);
printf("Your account balance: P%.2f",balance);
gotoxy(22,13);
printf("Press any key to proceed...");
getch();
goto menu;
}

case '4':
{
turbo:
clrscr();
gotoxy(26,10);
printf("Want another Transaction?");
gotoxy(27,11);
printf("Enter another [P]IN.");
gotoxy(27,12);
printf("[E]ND Transaction.");
ch=getch();
if(ch=='p'||ch=='P')
{
menu_pin:
clrscr();
{
if(pin==pin1)
{
bal1=balance;
}
if(pin==pin2)
{
bal2=balance;
}
if(pin==pin3)
{
bal3=balance;
}
if(pin==pin4)
{
bal4=balance;
}
if(pin==pin5)
{
bal5=balance;
}
}
gotoxy(30,2);
printf("[ ENTER ANOTHER PIN ]");
gotoxy(30,12);
printf("Enter new PIN: ");
scanf("%f",&pin);
{
if(pin==pin1)
{
balance=bal1;
goto menu;