Lecture 30

Problem Statement

Write a program for the Bank of EE160. The teller will type in the account holder, account type, and account balance. The program will let the teller know if a minimum balance fee needs to be charged, the balance after adjusting for the minimum balance fee, and if the teller has entered in an invalid account type. The program will also let the teller know that the account holder is on the bank's stop list and needs to be handled differently. The Bank of EE160 has saving accounts and checking accounts. For saving accounts, the minimum balance is \$1,000. For checking accounts, the minimum balance is \$500. The program will allow the teller to continue entering in account balances and types until the teller is done entering all of the accounts.

The program will also print out to a file a summary of all the accounts. This summary will contain the total number of accounts, the total amount in all accounts, the percentage of minimum balance fees relative to the total amount in all accounts, and the percentage of accounts that were charged a minimum balance fee. Also, after the teller has finished entering in each account's information, the program will display the account holder information and calculate the percentage the minimum balance fee is relative to the account balance.

After the summary of all the accounts, the program will print out to another file a list of all the account balances entered by the teller.

Assume the minimum balance fee is $35

Currently, the only person on the stop list is Obama

What is the problem asking for?

A program that takes in the account type and account balance. The program returns whether or not a minimum balance fee should be charged to the account

The program prints a summary of all the accounts detailing the total number of accounts and total amount in all accounts

input:
- account holder (string)
- account balance (decimal number)
- account type (character)
- exit program (character)
output:
- message telling the teller if the minimum balance fee should be charged or not ("A minimum balance fee needs to be charged to this account." or "A minimum balance fee does not need to be charged to this account."
- message telling the teller if s/he has entered in an invalid account type
- each account will also have a summary with the following information:
  - account holder information
  - percentage of the minimum balance fee charged compared to the account balance of each of the accounts
- a file with the accounts summary containing the following information:
  - total number of accounts
  - total amount in all accounts
  - percentage of total minimum balance fees charged compared to the total balance of all the accounts
  - percentage of accounts that were charged a minimum balance fee
- a file with a list of account balances entered by the teller
- message telling the teller to handle the account differently if the account holder is on the stop list

Algorithm Design

How can a computer solve this in a step-by-step manner?

it needs to check if the account is a saving account
it needs to check if the account is a checking account
it needs to check if the account balance is less than $1,000 for saving account
it needs to check if the account balance is less than $500 for checking account
it needs to check if the teller wants to exit the program

it needs to display a message to tell the teller to charge a minimum balance
it needs to display a message to tell the teller to not charge a minimum balance
it needs to continue reading in account balances and account types until the user wants to exit the program
it needs to count the number of accounts
it needs to total the amount of all the accounts
it needs to calculate the percentage of minimum balance fees charged compared to the total amount of all the accounts
it needs to calculate the percentage of minimum balance fee charged compared to the the balance on the account for each account
it needs to calculate the adjusted balance after the minimum balance fee is accounted for
it needs to list the account balances in a file
it needs to display the account holder information
it needs to output a file with the accounts summary information:
- number of accounts
- amount of all the accounts
- percentage of minimum balance fees charged compared to the total amount of all the accounts
it needs to make sure the account type entered is valid
it needs to tell the teller to handle the account differently if the account holder is on the stop list

How can we arrange the questions and tasks to develop an algoirthm (step-by-step procedure) that will meet our requirements?:

How can we simplify the problem?
What order should the questions be asked?
What order should the program tasks be done?

What is the algorithm?

do
  get account holder information
  check if the account holder is on the stop list
    when yes, then tell the teller to handle the account differently and exit loop
  check if the account is a saving account and less than \$1000
    when yes, then tell the teller to charge the minimum balance fee
  when no, check if the account is a checking account and less than \$1000
    when yes, then tell the teller to charge the minimum balance fee
  otherwise
    check if the account is not a valid account type
      when yes, tell the teller that the account type is invalid
      otherwise, tell the teller to not charge the minimum balance fee

  check if the account type was valid
    when yes, then
      display account holder information
      display account summary for individual account
      update accounts summary information
      update list of account balances
  ask the user if there are more accounts to be checked
while there are more accounts to be checked

output accounts summary information to a file
output list of account balances to a file

Write the program

translate your algorithm into code, stop_list.c:

translate your algorithm into code, functions.h:

translate your algorithm into code, functions.c:

translate your algorithm into code, macros.h:

the code to output to file is still executed
to exit the program completely replace break with return

Update the program so the teller can continue entering in the next account information

Assignment

Homework Problem 30.1, at the end of this problem you should submit to Laulima:

a file named UHusername_30_1.c
a file named UHusername_30_1_macros.h
a file named UHusername_30_1_functions.c
a file named UHusername_30_1_functions.h
- zhaol_30_1.c
- zhaol_30_1_macros.h
- zhaol_30_1_functions.c
- zhaol_30_1_functions.h
Update stop_list.c and functions.c so the program uses a goto statement to ask the teller to reenter a positive number if the teller enters in a negative number for the account balance (this behaviour continues until the teller enters in a zero or positive number, i.e. use goto to mimic a loop)

Test Case 1:

Please enter the account holder:
[user enters bush]
Please enter the account balance:
[user enters -100]
Please enter a positive account balance
Please enter the account balance:
[user enters -120]
Please enter a positive account balance
Please enter the account balance:
[user enters 100]
c = checking, s = saving
Please enter the account type:
[user enters c]
=== Account Information for bush's Account ===
Minimum Balance Fee to Account Balance Percentage: 35.0%
The new account balance is $65.00

Are you finished checking all your accounts?:
Enter 'n' to check more accounts; Enter any other character to exit
[user enters y]
Successfully opened file
Successfully opened file