ATM simulation

[cori25]

Hello,

I am creating a simulation assuming that the ATM only has $10, $20, $50 and $100 bills. I need the output to look like this:

Say the withdrawal amount is $90
Dispense: 1 - $50
2 - $20

I am having difficulty creating a function that will dispense as shown. I know that if i divide the withdrawal amount by 20 I will know how many 20's it would take for the amount but how do I distinguish which bills to use? And to have it show the number of bills needed?

Any help is appreciated.

Thanks in advance

[donbock]

Does your simulation have a finite pool of bills to dispense? That would be more realistic, but also harder to implement.

[cori25]

Does your simulation have a finite pool of bills to dispense? That would be more realistic, but also harder to implement.

The max withdrawal is set to 500. I can set the simulation as I wish since the parameters were not given. This is to be a very simple source code since I have yet to learn float, cin, cout, ect.. I was thinking more along the lines of an if statement saying if it != 30, then do the amount divided by the bill but I am lost as to how to count the amount of bills as I said. Hope this makes sense. I usually can figure these out but spent 6 hrs attempting with no luck...

[sevak316]

sounds like bunch of conditonal statements to me. I am not sure if I understood your question, but this is the first thing that came up in my head.

void dispence_amount(int da)
{
  while(da > 0)
  {
    if (da > 100)
    {
       dispence(100);  //take from bank
       hundred_bills--; //subtract # of hundred dollar bills left in ATM machine
       da = da - 100;  //subtract total dispence amount left for ATM to process
    }
    else if(da > 50)
    {
       dispence(50);
       fifty_bills--;
       da = da - 50;
    }
    //and so on...
  }
}

[cori25]

sounds like bunch of conditonal statements to me. I am not sure if I understood your question, but this is the first thing that came up in my head.

void dispence_amount(int da)
{
  while(da > 0)
  {
    if (da > 100)
    {
       dispence(100);  //take from bank
       hundred_bills--; //subtract # of hundred dollar bills left in ATM machine
       da = da - 100;  //subtract total dispence amount left for ATM to process
    }
    else if(da > 50)
    {
       dispence(50);
       fifty_bills--;
       da = da - 50;
    }
    //and so on...
  }
}

I am attempting this now but it seems like this might work. I have
#include <stdio.h>
#include <math.h>

Is there anything else to include? For dispence?

[boxfish]

I don't see a reason to include math.h; you would only need that for stuff like logarithms and trigonometric functions. You can probably do whatever math you need with the basic arithmetic operators.

[donbock]

Might be some use for div or ldiv from <stdlib.h>

[newb16]

For each bill value starting from the largest, determine number of bills that don't exceed total amount(for the first step) or remainder( for the rest ) ( wth integer divide ), e.g. numOfBills = restAmount/100;
then calculate remainder for the next step( it will not exceed this bill value by definition )

[kakanguyen]

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<link removed>

[lindapret88]

This is an interesting post.. thank you for sharing