Machine Problem

Create and design a program that simulates an Automatic Teller Machine. The money  bill to be used in the program will be 1000,500,200 and 100 money bill denomination.

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Program Listing
/* atm.scala
   Prof. Jake Rodriguez Pomperada, MAED-IT, MIT
   www.jakerpomperada.blogspot.com and www.jakerpomperada.com
   jakerpomperada@gmail.com
   January 8, 2022  7:58 PM Saturday
   Bacolod City, Negros Occidental
 */

import java.util.Scanner;

object  atm {
	
	def main(args: Array[String]) : Unit = {
	
	    var scanner = new Scanner(System.in);

       var bill1000=0; var bill500=0; var bill200=0; var bill100=0; 
       var total_balance=0; var withdraw=0; var money_left=0;
       var receive1000=0; var receive500=0; var receive200=0; var receive100=0;
       var withdraw_again='n';
	

 do

	 {

	    print("\n");
    	print("\tAutomatic Teller Machine Simulation in Scala");
        print("\n\n");  
    	print("\tHow many P1000 bills: ");
        bill1000 = scanner.nextInt();
		
		print("\tHow many P500 bills: ");
		bill500 = scanner.nextInt();
		
        print("\tHow many PHP 200 bills: ");
		bill200 = scanner.nextInt();
		
        print("\tHow many PHP 100 bills: ");
		bill100 = scanner.nextInt();

        total_balance = (bill1000 * 1000)+(bill500 * 500) + (bill200 * 200) +  (bill100 * 100) ;
	    print("\n\n");
		
        print("\tTotal Balance: PHP " + total_balance);

	
   	     print("\n\n");
		 print("\tEnter amount to withdraw: PHP ");
		 withdraw = scanner.nextInt();
		 
         money_left = withdraw ;

		 if  (withdraw > total_balance)
				{
				print("\tWithdraw amount greater than total balance.  ");
				print("\n");
				}
		 if (withdraw < total_balance)
		 {
		 	
		if  (money_left >= 1000 )
				{
				 receive1000 = (money_left / 1000);
				 if (receive1000 > bill1000 ) receive1000 = bill1000;

				 money_left = money_left - (receive1000 * 1000);
				 bill1000 = bill1000 - receive1000;
				}

		 if  (money_left >= 500 )
				{
				 receive500 = (money_left / 500);
				 if (receive500 > bill500 ) receive500 = bill500;

				 money_left = money_left - (receive500 * 500);
				 bill500 = bill500 - receive500;
				}

		 if (money_left >= 200 )
			 {
				 receive200 = (money_left / 200);
				 if (receive200 > bill200 ) receive200 = bill200;
				 money_left = money_left - (receive200 * 200);
				 bill200 = bill200 - receive200;
			 }

		 if (money_left >= 100 )
			  {
				 receive100 =(money_left / 100);
				 if (receive100 > bill100 ) receive100 = bill100;
				 money_left = money_left - (receive100 * 100);
				 bill100 = bill100 - receive100;
				}

				print("\n\n");
				print("\tYou will receive:");
				print("\n\n");
				print("\tPHP 1000 bill :=>  " + receive1000);
				print("\n");
				print("\tPHP 500 bill :=>   " + receive500);
				print("\n");
				print("\tPHP 200 bill :=>   " + receive200);
				print("\n");
				print("\tPHP 100 bill :=>   " + receive100);
				print("\n\n");

				total_balance = total_balance - withdraw;

				print("\tYour current balance is: PHP "  + total_balance);

				print("\n\n");
				print("\tYou only have balance of:");
				print("\n\n");
				print("\tPHP 1000 bill :=>  " +  bill1000);
				print("\n");
				print("\tPHP 500 bill  :=>  "  + bill500);
				print("\n");
				print("\tPHP 200 bill  :=>  "  + bill200);
				print("\n");   
				print("\tPHP 100 bill  :=>  "  + bill100)
                print("\n\n");
				printf("\tAnother Withdraw Again ? Y/N : ");
		        withdraw_again  = scala.io.StdIn.readChar()
		 }	 
	 }  while (withdraw_again.toUpper == 'Y'); 
	   			print("\n");
                print("\tEnd of Program");
                print("\n\n");
	 
       }
}