CMSC 104, Sect. 0101

Project 3: Bank Account

Out: Wednesday, November 12, 2008
Due: Tuesday, November 25, 2008, before 11:59 PM

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The Objective

This project is designed to give you practice working with functions. It will give you also give you more practice working with while loops and switch statments.

The Background

Most people store their money in a checking account. There are two basic operations performed on the checking account. One operation is to deposit money into the account and the other is to make a withdrawal from the account.

The Task

Your job is to write a program that will simulate the behavior of a checking account. Your program should accept a beginning balance from the user and then display a menu with four options. The menu should have the four options shown in the sample output below. The functions you will write, in addition to the main function, are:

• void PrintGreeting (void); - This function prints an explanation of the program to the user. You should assume the user knows nothing about program and give a detailed explanation.
• void PrintMenu (void); - This function displays the menu to the screen.
• float GetPositiveValue (void); - This function gets a positive (greater than 0) value from the user. It should error check the user input to make sure the value is greater than 0. It takes no arguments and returns the value entered by the user. You should use this function to get the beginning balance from the user. You should also use it to get the amount to withdraw or deposit.
• float Withdrawal (float balance, float withdrawalAmt); - This function takes the current balance and the amount to withdraw. It returns the new balance after the withdrawal is made.
• float Deposit (float balance, float depositAmt); - This function takes the current balance and the amount to be deposited as arguments. It returns the new balance after the deposit is made.
• void PrintReceipt (int totalWithdrawals, int totalDeposits, float begBalance, float balance); - This function prints an account summary to the screen. It should list the total number of withdrawals, the total number of deposits, the beginning balance and the ending balance. It does not have to match the sample output exactly.

More Details

• You must use the above function prototypes EXACTLY as they have been given to you. You may not change them in any way.


• You should also use symbolic constants (we'll discuss these in class on Wednesday) for the menu options in the switch statement:

  #define WITHDRAWAL 1
  #define DEPOSIT    2
  #define SUMMARY    3
  #define QUIT       4
  	

• If the balance in the checking account goes below zero after making a withdrawal or deposit, you should print a message to the user stating that the balance is negative. You do not have to prevent the balance from going below zero, you should simply print a warning when it happens.

Sample Output

linux3[1]% gcc -ansi -Wall proj3.c

linux3[2]% a.out

[Your greeting goes here.]

Please enter the beginning balance: 1000.00

1)  Make a Withdrawal
2)  Make a Deposit
3)  Display Account Summary
4)  Quit

Selection:  1
Enter the amount to withdraw:  500.00


1)  Make a Withdrawal
2)  Make a Deposit
3)  Display Account Summary
4)  Quit

Selection:  1
Enter the amount to withdraw:  100.00

1)  Make a Withdrawal
2)  Make a Deposit
3)  Display Account Summary
4)  Quit

Selection:  3


----------------------------------------------------
                  Account Summary

Beginning balance: $1000.00
   Ending balance: $400.00


Total number of withdrawals:   2
Total number of deposits:      0
----------------------------------------------------



1)  Make a Withdrawal
2)  Make a Deposit
3)  Display Account Summary
4)  Quit

Selection:  2
Enter the amount to deposit:  500.00


1)  Make a Withdrawal
2)  Make a Deposit
3)  Display Account Summary
4)  Quit

Selection:  3


----------------------------------------------------
                  Account Summary

Beginning balance: $1000.00
   Ending balance: $900.00


Total number of withdrawals:   2
Total number of deposits:      1
----------------------------------------------------



1)  Make a Withdrawal
2)  Make a Deposit
3)  Display Account Summary
4)  Quit

Selection:  1

Enter the amount to withdraw:  1000.00

********* WARNING:  You have a negative account balance *********

1)  Make a Withdrawal
2)  Make a Deposit
3)  Display Account Summary
4)  Quit

Selection:  3


----------------------------------------------------
                  Account Summary

Beginning balance: $1000.00
   Ending balance: $-100.00


Total number of withdrawals:   3
Total number of deposits:      1
----------------------------------------------------

1)  Make a Withdrawal
2)  Make a Deposit
3)  Display Account Summary
4)  Quit

Selection:  4


linux3[3]% 

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Submitting the Program

Here is a sample submission command. Note that the project name starts with uppercase 'P'.

linux3[4]% submit cs104_0101 Proj3 proj3.c

To verify that your project was submitted, you can execute the following command at the Unix prompt. It will show the file that you submitted in a format similar to the Unix 'ls' command.

linux3[5]% submitls cs104_0101 Proj3