Lecture 22

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 and also the balance after adjusting for the minimum balance fee. 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 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 a list of all the account balances entered by the teller.

Assume the minimum balance fee is $35

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."
- 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
- accounts summary with 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
- list of account balances entered by the teller

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
it needs to display the account holder information

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?

while there are more accounts to be checked
  get account holder information
  check if the account is a saving account
    when yes, then
      check if the account balance is less than \$1000
        when yes, then
          tell the teller to charge the minimum balance fee
        otherwise
          tell the teller to not charge the minimum balance fee
  otherwise (assume) the account is a checking account
    check if the account balance is less than \$500
      when yes, then
        tell the teller to charge the minimum balance fee
      otherwise
        tell the teller to not charge the minimum balance fee
  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
display accounts summary information
display list of account balances

Write the program

translate your algorithm into code, account_holder.c:

translate your algorithm into code, functions.h:

translate your algorithm into code, functions.c:

translate your algorithm into code, macros.h:

the use of the string conversion specifier %s

Write the program using a function

translate your algorithm into code, account_holder_with_function.c:

translate your algorithm into code, functions.h:

translate your algorithm into code, functions.c:

translate your algorithm into code, macros.h:

specifying an array in the function prototype void get_account_holder(char account_holder[]);
passing an array to the function get_account_holder(account_holder)
be careful of when to have square brackets and when they are not needed
C is actually translating the array name to a point for you
- http://www.tutorialspoint.com/cprogramming/c_passing_arrays_to_functions.htm
- http://stackoverflow.com/questions/5573310/difference-between-passing-array-and-array-pointer-into-function-in-c

Assignment

Homework Problem 22.1, at the end of this problem you should submit to Laulima:

a file named UHusername_22_1.c
a file named UHusername_22_1_macros.h
a file named UHusername_22_1_functions.c
a file named UHusername_22_1_functions.h
- zhaol_22_1.c
- zhaol_22_1_macros.h
- zhaol_22_1_functions.c
- zhaol_22_1_functions.h
Update account_holder_with_function.c so that the account holder information is displayed with its first character capitalized

Do not use the toupper() function, write your own function to capitalize letters

Test Case 1:

Please enter the account holder:
[user enters joey]
Please enter the account balance:
[user enters 100]
c = checking, s = saving
Please enter the account type:
[user enters c]
A minimum balance fee needs to be charged to this account.
=== Account Information for Joey'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]
==== Accounts Summary ====
The total number of accounts: 1
The total amount in all accounts: \$100.00
The percentage of the total minimum balance fees with respect to the total account balances: 35.0%
The percentage of accounts that were charged a minimum balance fee: 100.0%
==== List of Account Balances ====
  0: \$  100.00

Optional Assignments

Optional assignments are not graded and does not need to be turned in. It is intended to give you more practice (if you want it) using the programming concepts discussed in lecture. Some optional assignments are intended to introduce related concepts (if you care about it) not discussed in this course to broaden your knowledge about programming in general.

If the optional assignment is modifying a required assignment, be sure to leave your previous assignment work untouched by copying them to a new folder for the optional assignment and modify only the files in the new folder

Update 22.1 Capitalize Account Holder Full Names

Modify the program so it allows users to input the first and last name of the account holder, and also print out both the capitalized first name and the capitalized last name:

Test Case 1:

Please enter the account holder:
[user enters joey boey]
Please enter the account balance:
[user enters 100]
c = checking, s = saving
Please enter the account type:
[user enters c]
A minimum balance fee needs to be charged to this account.
=== Account Information for Joey Boey'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]
==== Accounts Summary ====
The total number of accounts: 1
The total amount in all accounts: \$100.00
The percentage of the total minimum balance fees with respect to the total account balances: 35.0%
The percentage of accounts that were charged a minimum balance fee: 100.0%
==== List of Account Balances ====
  1: \$  100.00