CSE 308 Offline Assignment 1 -Solved

Basics of Object Oriented Programming (OOP) 
In this assignment, you will implement a simple banking system using the basic concepts of 
Object Oriented Programming. 
Accounts: In our banking system, there will be four types of accounts: Savings, Student, Loan, 
and Fixed deposit. For the sake of simplicity, assume an user can open one account only. You have 
to implement the following functionalities: 
1. Create Account: After entering the system, users can request to open a new account with 
their name, account type, and initial deposit (or initial loan amount if the account is a loan 
account). A fixed deposit account must ensure the first deposit is at least 100,000$. After 
successful opening of the account, the user will be notified accordingly. If an account already 
exists against that name, an error message will be shown. Assume the names to be primary 
keys. 
2. Deposit: An user can deposit any sum of money into an account, except for a fixed deposit 
account. The deposit amount must not be less than 50,000$ for the latter case. The deposit 
of loan accounts shall be used to reduce the loan amount. 
3. Withdraw: Withdrawing is different across different account types: 
(a) A student account cannot withdraw more than 10,000$ in one transaction. 
(b) A fixed deposit account cannot withdraw if it has not reached a maturity period of one 
year. 
(c) A savings account cannot withdraw if the withdrawal results in a deposit of less than 
1,000$. 
(d) A loan account cannot withdraw any amount from the account. It is just used to repay 
the loan taken. 
A transaction will be deemed invalid if the amount to withdraw exceeds the deposited sum. 
4. Request Loan: Any user can request a loan. The maximum allowable loan for savings, 
student, and fixed deposit accounts are 10,000$, 1,000$, 100,000$, respectively. The loan 
account holders can apply for additional 5% of the current loan amount. All loans have a 
fixed 10% interest rate, which will be deducted after one year. The loans must be approved 
by an employee of the bank. 
15. Query Deposit: An user can query the amount of deposit and loan at any time (See sample 
I/O in the table below). 
Interest rates on deposit for savings, student, and fixed deposit accounts are 10%, 5%, 15%, 
respectively. Savings, student, and fixed deposit accounts will be deducted an amount of 500$ of 
service charge after one year. 
Employees: There will be three types of employees in a banking system: Managing Director, 
Officer, and Cashier. There are different operations of employees based on their roles: 
1. Lookup: Any employee can see the deposit sum of any user account. 
2. Approve Loan: The Managing director and officer can approve loan requests of users. 
3. Change Interest Rate: The managing director has the discretion to change the interest 
rates of different types of accounts. 
4. See Internal Fund: The managing director can see the internal funds. 
Maintain a bank class for handling the accounts and employees, and the internal fund. The 
initial fund is 1,000,000$. Assume the bank class will not be instantiated more than once, and the 
following employees will be created at the time of bank instantiation: 1 Managing Director (MD), 
2 Officers (O1, O2), 5 Cashiers (C1, · · · , C5). Also maintain a clock variable to increment the year 
count of operation (assume all accounts are created at the same time). 
Some test inputs and corresponding outputs are shown in Table 1. 
Your implementation must abide by the encapsulation, inheritance, and polymorphism proper
ties of OOP. Make the design choices accordingly. 
Please DO NOT COPY solutions from anywhere (e.g., your friends, seniors, internet). Any form 
of plagiarism, irrespective of source or destination, will result in -100% marks in the online/offline. 
Submission Deadline: 11 AM, May 22, 2022 
Platform: Moodle, obviously! 
2Input 
Output 
Bank Created; MD, S1, S2, C1, C2, C3, C4, C5 created 
Create Alice Student 1000 
Student account for Alice Created; initial balance 1,000$ 
Deposit 20000 
20,000$ deposited; current balance 21,000$ 
Withdraw 12,000 
Invalid transaction; current balance 21,000$ 
Query 
Current balance 21,000 
Request 500 
Loan request successful, sent for approval 
Close 
Transaction Closed for Alice 
Open S1 
S1 active, there are loan approvals pending 
Approve Loan 
Loan for Alice approved 
Change Student 7.50 
You don’t have permission for this operation 
Lookup Alice 
Alice’s current balance 21,500$ 
See 
You don’t have permission for this operation 
Close 
Operations for S1 closed 
Open Alice 
Welcome back, Alice 
Query 
Current Balance 21,500$, loan 500$ 
Close 
Transaction Closed for Alice 
INC 
1 year passed 
Open Alice 
Welcome back, Alice 
Query 
Current balance, 22,525$, loan 500$ 
Close 
Transaction Closed for Alice 
Table 1: A sample input for Bank simulation 
3