in c programming Scope: Files

Banking application.

Create a Start menu with the following options.

Open Account

Login

Exit

Create a Main menu with the following options:

Check Balance

Deposit

Withdraw

Show transactions

Exit

Create structure$($s$)$ to support the following information:

Owner name

Password

Account balance

Transaction Count

Transaction amount

Starting Balance

Ending Balance

Behavior:

Open Account

a$.$ Get the user name & password, how much they are opening the account with.

Transaction Count starts at $0.$

b$.$ Launch Main menu, use this new account as context.

Login

a$.$ Ask for account name and password.

b$.$ Load the account details from the file with that account name.

i$.$ If the file does not exist, or the password does not match, tell them invalid

username$/$password$.$

c$.$ Launch the Main menu, use this account as the context.

Check Balance

a$.$ Show current balance.

Deposit

a$.$ Ask the user how much to deposit $($positive amount only$).$

b$.$ Add the amount to the balance and show the new balance.

c$.$ Create a transaction record.Withdraw

a$.$ Same as deposit, but reduce the balance.

Show Transactions

a$.$ Show all the transactions for this account.

Transaction Behavior.

When making a transaction, that record is saved to the transactions file for that account.

Files:

There are two types of files.

Account Info

Holds onto information, such as balance and password

Transaction Details

Holds the transactions for a specific account.

File Structures $($Recommended$)$

Account

Name.info

a$.$ Password

b$.$ Balance

Account Name.tran

a$.$ Starting Balance

b$.$ Transaction Amount

c$.$ Ending Balance

Example Files

File name:

Bob.info

File contents:

P@s$W$0$rd

$,155\mathrm{.}25$

File name:

Bob.tran

File contents:

$,0100100$

$10020120$

$12040160$

$,160-4\mathrm{.}75155\mathrm{.}25$

First value is the starting amount, $2$nd is the transaction amount, third is the balance after. The

first record is the amount the account is opened with, so we started at $0,$ and opened the

account with $$100.$ The $2$ nd line we had $$100,$ deposited $$20,$ ending with $$120.$