C++ Group Project

DDL: Jan 2 23:59 p.m, 2021

At most 3 members for each team

In a bank, there are many accounts. An account can be a normal account or a VIP account.

Account information is stored in a file in the following format (account.txt):

accountNo	accountName	password	Balance	VIP
0123	Ryan	123456	100000.23	V
0124	Eric	654321	100000.12	N

Every account number (accountNo) contains four digits. Password would be a 6-sigits number. For every account, the client can inquiry,

withdraw, save and transfer money. These transactions have

the following features:

1. Withdraw

For normal account, the customer can withdraw at most 2000 per time. For VIP account, the customer can withdraw 3000 per time.

If a customer wants to get money that

exceeds this limit, a warning should be given.

When a customer withdraws money from an account and the amount exceeds the budget in that account, the withdrawal fails. A warning must be given.

2. Deposit

A customer can deposit as much as possible.

3. Transfer

When transferring money, a VIP account can transfer at most 20000 and a normal account can transfer at most 10000. It is assumed that the accounts transferring from

and transferring to are all in the account.txt. If the “from” account is VIP, the charge for the transaction is 0.5%; otherwise, the charge is 1%.

4. Inquiry

When an account is inquired, the balance in this account is displayed.

Notice: After each transaction except inquiry, the balance should be updated in the file if

the transaction succeed.

A menu is required for the customer to login and operate the account. There are three components in the menu.

1. Login system

When the program start, a menu as following should prompt out.

Please input your account number:

If a valid account can be found in account.txt, the user can process to next step. Otherwise, a warning will be given and back to the account input.

Please input you account password:

Verify input with the password stored in the account.txt. If failed, a warning will be given and back to the account input.

2. Operation menu

After customer log into the system, a menu as following should prompt out.

1. Inquiry

2. Deposit

3. Withdraw

4. Transfer

5. Quit

Please select:

Customer can use number to select each operation.

Inquiry

output the balance as following

Dear Ryan, your balance is 100000.23

Deposit

Input how much money you want to deposit

Please input the amount to save: 10000

Verify if it is a reasonable amount, and output the updated balance.

Dear Ryan, your balance has been updated to 110000.23

Withdraw

Input the amount you want to withdraw

Please input the amount to withdraw: 10000

Verify if it is a reasonable amount, and output the updated balance. Otherwise warning

must be given.

Dear Ryan, your balance has been updated to 90000.23

Transfer

Input the target account number

Please input the target account number:

Verify if it is a valid account. If not, a warning must be prompted. Next input the amount to transfer.

Please input the amount to transfer:

Verify if it is a reasonable amount, and output the updated balance. Otherwise warning must be given.

Transfer success! Your balance has been updated to

After each operation, you can choose

1. Continue //Back to Operation menu

2. Quit //Terminate the program

Notice

1. Use classes and inheritance in C++.

2. Separate main function & class definition in different file.

3. Example of file input/output is demonstrated in fileio.cpp