Question

1. This programming assignment will involve the idea of modern-day banking using an automated teller machine (ATM). The server-side software maintains a bank account and a user accesses the account via client software. For this program, you can assume that a single account will be accessed by a single user. This avoids synchronization problems with multiple users. There must be two sides to this program: a server and a client. The server maintains the balance and does all updates (withdrawals and deposits) and also responds to queries on the amount of money in the account. The user issues commands via the client to check the available balance, withdraw money from the account, and deposit money into the account. The client does none of the calculations but only sends requests to the server that executes the commands and returns the answer to the client. The server should initialize the balance in the bank account to $100.

2. The user must be able to do the following activities from the client software:

• Deposit money into the account on the server.

• Withdraw money from the account on the server.

• Check the balance of the amount in the account on the server.

3. Instructions

• The programs MUST be written in the programming language ***Python 3***.

Answer 1

Code for above program :-

# function for ATM machine features
def ATM(balance):
    print("Select a option:")
    print("d : deposit money")
    print("w : withdraw money")
    print("c : check balance")
    print("q : quit")
    # Asking user for the desired operation
    option = input("Enter your choice: ")
    # Checking for deposit operation
    if option =="d":
        # amount to be deposited
        amount = float(input("Enter amount to deposit: "))
        # updating balance
        balance = balance + amount
        # displaying updated balnce
        print("Your account balance is : ${}".format(balance))
        # again calling ATM function
        ATM(balance)
    # withdrawal operation
    elif option=="w":
        # amount to be withdrawed
        amount = float(input("Enter amount to withdraw: "))
        #  amount to be withdrawl greater than balance
        if amount> balance:
            print("You dont have enough balance to withdraw:")
            # displaying updated balnce
            print("Your account balance is : ${}".format(balance))
            # again calling ATM function
            ATM(balance)
        # if amount under balance
        else:
            # updated balance
            balance = balance - amount
            print("${} withdrawl from your account".format(amount))
            # displaying updated balnce
            print("Your account balance is : ${}".format(balance))
            # again calling ATM function
            ATM(balance)
    #  check balance operation
    elif option == 'c':
        # displaying balnce
        print("Your account balance is : ${}".format(balance))
        # again calling ATM function
        ATM(balance)
    # quiting from server
    elif option == 'q':
        return balance
    # check for invalid input
    else:
        print("Invalid Input")
        ATM(balance)
    return balance
# initialising account balance to $100
balance = 100
# calling main function
balance = ATM(balance)

Screenshot For above code :-