As owners of AwesomeSuperPuperBank, we want to have a simple prototype of our new ATM machine that allows our customers to:
- view their account balance
- withdraw money
Our bank already has two clients: Volodymyr and Iryna. The bank also has liquid assets (i.e. cash) in the amount of ₴337 (in different banknotes) which our ATM machine can operate with.
banknotes: 500: 0 200: 0 100: 2 50: 1 20: 2 10: 4 5: 1 2: 0 1: 2
accounts:
3321:
name: 'Volodymyr'
password: 'mypass'
balance: 422 5922:
5922:
name: 'Iryna'
password: 'ho#ll_§1'
balance: 5301
Here’s one of possible application flows:
Please Enter Your Account Number:
> 3321 Enter Your Password:
> mypass
Hello, Volodymyr!
Please Choose From the Following Options: 1. Display Balance 2. Withdraw 3. Log Out
> 1
Your Current Balance is ₴422
Please Choose From the Following Options: 1. Display Balance 2. Withdraw 3. Log Out
> 2
Enter Amount You Wish to Withdraw:
> 100000
ERROR: INSUFFICIENT FUNDS!! PLEASE ENTER A DIFFERENT AMOUNT:
> 420
ERROR: THE MAXIMUM AMOUNT AVAILABLE IN THIS ATM IS ₴337. PLEASE ENTER A DIFFERENT AMOUNT:
> 329
ERROR: THE AMOUNT YOU REQUESTED CANNOT BE COMPOSED FROM BILLS AVAILABLE IN THIS ATM. PLEASE ENTER A DIFFERENT AMOUNT:
> 320
Your New Balance is ₴102
Please Choose From the Following Options: 1. Display Balance 2. Withdraw 3. Log Out
> 1
Your Current Balance is ₴102
Please Choose From the Following Options: 1. Display Balance 2. Withdraw 3. Log Out
> 3
Volodymyr, Thank You For Using Our ATM. Good-Bye!
Please Enter Your Account Number:
> 5922 Enter Your Password:
> 1234567
ERROR: ACCOUNT NUMBER AND PASSWORD DON'T MATCH
Please Enter Your Account Number:
> 5922
Enter Your Password:
> ho#ll_§1
Hello, Iryna!
...
