Automatic Teller Machine Simulation in C

A simple automatic teller machine simulation in C that I wrote with the help of my friend Sir Manny Emmanuel my close friend and fellow software engineer.

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Sample Program Output

Program Listing

atm.c

#include <stdio.h>

#include <conio.h>

int main()

{

int bill500=0, bill200=0, bill100=0, total_balance=0;

int withdraw=0, money_left=0;

int reciv500=0, reciv200=0, reciv100=0;

char withdraw_again[2] = "N";

     printf("\n\n");

         printf("\t Automatic Teller Machine Simulation in C");

printf("\n\n");

printf("\tHow many P500 bills: ");

scanf("%d", &bill500);

printf("\tHow many PHP 200 bills: ");

scanf("%d", &bill200);

printf("\tHow many PHP 100 bills: ");

scanf("%d", &bill100);

total_balance = (bill500 * 500) + (bill200 * 200) +  (bill100 * 100) ;

printf("\tTotal Balance: PHP %d", total_balance);

do

{

printf("\n");

printf("\n");

printf("\tEnter amount to withdraw: PHP ");

scanf("%d", &withdraw);

money_left = withdraw ;

if  (withdraw > total_balance)

{

printf("\tWithdraw amount greater than total balance.  ");

printf("\n");

}

if (withdraw < total_balance)

{

if  (money_left >= 500 )

{

reciv500 = int(money_left / 500);

if (reciv500 > bill500 ) reciv500 = bill500;

money_left = money_left - (reciv500 * 500);

bill500 = bill500 - reciv500;

}

if (money_left >= 200 )

{

reciv200 = int(money_left / 200);

if (reciv200 > bill200 ) reciv200 = bill200;

money_left = money_left - (reciv200 * 200);

bill200 = bill200 - reciv200;

}

if (money_left >= 100 )

  {

reciv100 = int(money_left / 100);

if (reciv100 > bill100 ) reciv100 = bill100;

money_left = money_left - (reciv100 * 100);

bill100 = bill100 - reciv100;

}

printf("\n");

printf("\n");

printf("\tYou will receive:");

printf("\n");

printf("\t%d  PHP 500 bill", reciv500);

printf("\n");

printf("\t%d  PHP 200 bill", reciv200);

printf("\n");

printf("\t%d  PHP 100 bill", reciv100);

printf("\n");

total_balance = total_balance - withdraw;

printf("\tYour current balance is: PHP %d", total_balance);

printf("\n");

printf("\n");

printf("\tYou only have balance of:");

printf("\n");

printf("\t%d  PHP 500 bill", bill500);

printf("\n");

printf("\t%d  PHP 200 bill", bill200);

printf("\n");

printf("\t%d  PHP 100 bill", bill100);

printf("\n");

  printf("\n\n");

printf("\tAnother Withdraw Again ? Y/N : ");

scanf("%s", &withdraw_again);

}

}  while (withdraw_again == "Y" || withdraw_again == "y" );

     printf("\n\n");

     printf("\tEnd of Program");

     printf("\n\n");

}