Running head: CURRENCY CONVERSION 1
Currency Conversion
Billy Burger
IT-210
April 29, 2012
WALLY PISTONE CURRENCY CONVERSION 2
Currency Conversion
~Application-Level Requirements List~
1. Menu-Driven Program
2. User has option to select 1 of 5 international currency types. (Canadian dollars, Mexican pesos, English pounds, Japanese yen, and French francs)
3. Program converts foreign currency to U.S. dollars if values provided are valid.
4. Program displays the equivalent dollar amount.
5. Program returns to main menu, user has option to enter another conversion or quit the program.
~Input-Process-Output Chart~
Input Process Output
Menu Options: User selects 1 of 6
Display Menu Currency Type (Integer) 1 - 5
International Value (Real) 0 - 1,000,000
Get Foreign Value Int_Value (Real) 0 - 1,000,000
Currency Type (Integer) 1 - 5
International Value (Real) 0 - 1,000,000
Convert Currency US_Value (Real) > 0 CURRENCY CONVERSION 3
Currency Type (Integer) 1 - 5
International Value (Real) 0 - 1,000,000
US_Value (Real) > 0
Display Results Currency Type (Integer) 1 - 5
Int_Value (Real) 0 - 1,000,000
US_Value (Real) > 0
~Hierarchy Chart~
~Control Flow Diagram—Main Control~
~Control Flow Diagram—Display Menu~
~Control Flow Diagram—Get Foreign Value~ CURRENCY CONVERSION 4
~Control Flow Diagram—Convert Currency~
~Control Flow Diagram—Display Results~
~Pseudocode~
Main Control
Declare Nation As String
Write "Welcome to the Currency Conversion Program"
Write
Write "This program coverts foreign currency to US dollars."
Repeat
Call Display Menu
If Selection = 1 Then
Set Nation = Canadian CURRENCY CONVERSION 5
End If
If Selection = 2 Then
Set Nation = Mexican
End If
If Selection = 3 Then
Set Nation = English
End If
If Selection = 4 Then
Set Nation = Japanese
End If
If Selection = 5 Then
Set Nation = French
End If
Until Selection = 0
If Selection = 0 Then
Write "Thank you for using the Currency Conversion Program"
End Program
End If
Call Get Foreign Value
Call Convert Currency
Call Display Results
End Main Control
Display Menu CURRENCY CONVERSION 6
Declare Selection As Integer
Repeat
Write "Select Foreign Currency"
Write ""
Write "0 - Quit The Program"
Write "1 - Canadian Dollars"
Write "2 - Mexican Pesos"
Write "3 - English Pounds"
Write "4 - Japanese Yen"
Write "5 - French Francs"
Input Selection
If Selection = 0 Then
Repeat
Write "Are you sure you want to quit program? (Y or N)"
Input Response
If Response = N Then
Call Display Menu
If Response = Y Then
Set Selection = 0
Until Response = N or Response = Y
Else If Selection < 0 Or Selection > 5
Write "Error 4: Invalid Menu Selection"
End If
Until (Selection = Int(Selection)) And (Selection > = 0) And (Selection < = 5) CURRENCY CONVERSION 7
End Display Menu
Get Foreign Value
Declare Int_Value As Real
Repeat
Write "Enter Foreign Value"
Write "Value Must Be A Positive Number"
Input Int_Value
If Int_Value < = 0 Or > 1,000,000 Then
Write "Error 1: Invalid Input"
Write "Value Must Be A Positive Number"
Else If Int_Value < > Real
Write "Error 2: Illegal Value
Write "Value Must Be A Number"
End If
Until Int_Value > 0 And < 1,000,000
End Get Foreign Value
Convert Currency
Declare US_Value, Rate As Real
Select Case Of Nation
Case Canadian: CURRENCY CONVERSION 8
Set Rate = 1.4680
Case Mexican:
Set Rate = 9.5085
Case English:
Set Rate = 0.6085
Case Japanese:
Set Rate = 104.9200
Case French:
Set Rate = 6.2561
Default:
Set Rate = 0.0
End Case
Set US_Value = Rate * Int_Vale
End Convert Currency
Display Results
Declare Currency As String
Select Case Of Nation
Case Canadian:
Set Currency = Dollars
Case Mexican:
Set Currency = Pesos
Case English: CURRENCY CONVERSION 9
Set Currency = Pounds
Case Japanese:
Set Currency = Yen
Case French:
Set Currency = Francs
Default:
Set Currency = " "
End Case
If Currency < > " " Then
Write "The conversion for $ ", Int_Value, " ", Nation, " ", Currency
Write "is $ ", US_Value, "US Dollars."
Else
Write "Error 5: Invalid Currency Type
End If
End Display Results
~Test Case 1~
Display Menu Test: Valid Menu Selection = Canadian
Inputs: Menu Selection = 1
Expected Outputs:
Nation = Canadian
Get Foreign Value Test: Valid International Value (Canadian) = 200.00 CURRENCY CONVERSION 10
Inputs: 200.00
Expected Outputs:
Int_Value = 200.00
Convert Currency Test: Valid International Currency = Canadian
Inputs:
Nation = Canadian
Int_Value = 200.00
Expected Outputs:
US_Value = 293.60
Display Results Test Cases: Valid International Currency = Canadian
Inputs:
Nation = Canadian
Int_Value = 200.00
U.S._Value = 293.60
Expected Output:
The conversion for $ 200.00 Canadian Dollars
is $ 293.60 US Dollars.
Currency Conversion Integration Test: Valid Selection = Canadian CURRENCY CONVERSION 11
Inputs:
Nation = Canadian
Int_Value = 200.00
U.S._Value = 293.60
Expected Output
The conversion for $ 200.00 Canadian Dollars
is $ 293.60 US Dollars.
~Test Case 2~
Display Menu Test: Valid Menu Selection = Mexican
Inputs: Menu Selection = 2
Expected Outputs:
Nation = Mexican
Get Foreign Value Test: Valid International Value (Mexican) = 100.00
Inputs: 100.00
Expected Outputs:
Int_Value = 100.00
Convert Currency Test: Valid International Currency = Mexican
Inputs:
Nation = Mexican CURRENCY CONVERSION 12
Int_Value = 100.00
Expected Outputs:
US_Value = 950.85
Display Results Test Cases: Valid International Currency = Mexican
Inputs:
Nation = Mexican
Int_Value = 100.00
U.S._Value = 950.85
Expected Output:
The conversion for $ 100.00 Mexican Pesos
is $ 950.85 US Dollars.
Currency Conversion Integration Test: Valid Selection = Mexican
Inputs:
Nation = Mexican
Int_Value = 100.00
U.S._Value = 950.85
Expected Output
The conversion for $ 100.00 Mexican Pesos
is $ 950.85 US Dollars.
~Test Case 3~ CURRENCY CONVERSION 13
Display Menu Test: Valid Menu Selection = English
Inputs: Menu Selection = 3
Expected Outputs:
Nation = English
Get Foreign Value Test: Valid International Value (English) = 100.00
Inputs: 100.00
Expected Outputs:
Int_Value = 100.00
Convert Currency Test: Valid International Currency = English
Inputs:
Nation = English
Int_Value = 100.00
Expected Outputs:
US_Value = 60.85
Display Results Test Cases: Valid International Currency = English
Inputs:
Nation = English CURRENCY CONVERSION 14
Int_Value = 100.00
U.S._Value = 60.85
Expected Output:
The conversion for $ 100.00 English Pounds
is $ 60.85 US Dollars.
Currency Conversion Integration Test: Valid Selection = English
Inputs:
Nation = English
Int_Value = 100.00
U.S._Value = 60.85
Expected Output
The conversion for $ 100.00 English Pounds
is $ 60.85 US Dollars.
~Test Case 4~
Display Menu Test: Valid Menu Selection = Japanese
Inputs: Menu Selection = 4
Expected Outputs:
Nation = Japanese
Get Foreign Value Test: Valid International Value (Japanese) = 100.00 CURRENCY CONVERSION 15
Inputs: 100.00
Expected Outputs:
Int_Value = 100.00
Convert Currency Test: Valid International Currency = Japanese
Inputs:
Nation = Japanese
Int_Value = 100.00
Expected Outputs:
US_Value = 10,492.00
Display Results Test Cases: Valid International Currency = Japanese
Inputs:
Nation = Japanese
Int_Value = 100.00
U.S._Value = 10,492.00
Expected Output:
The conversion for $ 100.00 Japanese Yen
is $ 10,492.00 US Dollars.
Currency Conversion Integration Test: Valid Selection = Japanese
Inputs: CURRENCY CONVERSION 16
Nation = Japanese
Int_Value = 100.00
U.S._Value = 10,492.00
Expected Output
The conversion for $ 100.00 Japanese Yen
is $ 10,492.00 US Dollars.
~Test Case 5~
Display Menu Test: Valid Menu Selection = French
Inputs: Menu Selection = 5
Expected Outputs:
Nation = French
Get Foreign Value Test: Valid International Value (French) = 100.00
Inputs: 100.00
Expected Outputs:
Int_Value = 100.00
Convert Currency Test: Valid International Currency = French
Inputs:
Nation = French CURRENCY CONVERSION 17
Int_Value = 100.00
Expected Outputs:
US_Value = 625.61
Display Results Test Cases: Valid International Currency = French
Inputs:
Nation = French
Int_Value = 100.00
U.S._Value = 625.61
Expected Output:
The conversion for $ 100.00 French Francs
is $ 625.61 US Dollars.
Currency Conversion Integration Test: Valid Selection = French
Inputs:
Nation = French
Int_Value = 100.00
U.S._Value =
Expected Output
The conversion for $ 100.00 French Francs
is $ 625.61 US Dollars.
~Test Case 6~ CURRENCY CONVERSION 18
Display Menu Test: Valid Menu Selection = Quit The Program
Inputs: Menu Selection = 0
Expected Outputs:
Are you sure you want to quit program? (Y or N)
Inputs: Response = N
Expected Outputs:
Select Foreign Currency
0 - Quit The Program
1 - Canadian Dollars
2 - Mexican Pesos
3 - English Pounds
4 - Japanese Yen
5 - French Francs
Currency Conversion Integration Test: Valid Selection = Quit The Program
Inputs: Menu Selection = 0
Expected Outputs:
Are you sure you want to quit program? (Y or N)
Inputs: Response = N
Expected Outputs:
Select Foreign Currency CURRENCY CONVERSION 19
0 - Quit The Program
1 - Canadian Dollars
2 - Mexican Pesos
3 - English Pounds
4 - Japanese Yen
5 - French Francs
~Test Case 7~
Display Menu Test: Valid Menu Selection = Quit The Program
Inputs: Menu Selection = 0
Expected Outputs:
Are you sure you want to quit program? (Y or N)
Inputs: Response = Y
Expected Outputs:
Set Choice = 0
Thank you for using the Currency Conversion Program
End Program
Currency Conversion Integration Test: Valid Selection = Quit The Program
Inputs: Menu Selection = 0
Expected Outputs: CURRENCY CONVERSION 20
Are you sure you want to quit program? (Y or N)
Inputs: Response = Y
Expected Outputs:
Set Choice = 0
Thank you for using the Currency Conversion Program
End Program
~Test Case 8~
Display Menu Test: Invalid Menu Selection = Error
Inputs: Menu Selection = 7
Expected Outputs:
Error 4: Invalid Menu Selection
Select Foreign Currency
0 - Quit The Program
1 - Canadian Dollars
2 - Mexican Pesos
3 - English Pounds
4 - Japanese Yen
5 - French Francs
Currency Conversion Integration Test: Invalid Menu Selection = Error
Inputs: Menu Selection = 7 CURRENCY CONVERSION 21
Expected Outputs:
Error 4: Invalid Menu Selection
Select Foreign Currency
0 - Quit The Program
1 - Canadian Dollars
2 - Mexican Pesos
3 - English Pounds
4 - Japanese Yen
5 - French Francs
~Test Case 9~
Get Foreign Value Test: Invalid Foreign Value = Error
Inputs: 0
Expected Outputs:
Error 1: Invalid Input
Value Must Be A Positive Number
Enter Foreign Value
Value Must Be A Positive Number
Currency Conversion Integration Test: Invalid Foreign Value = Error
Inputs: 0 CURRENCY CONVERSION 22
Expected Outputs:
Error 1: Invalid Input
Value Must Be A Positive Number
Enter Foreign Value
Value Must Be A Positive Number
~Test Case 10~
Get Foreign Value Test: Illegal Foreign Value = Error
Inputs: Wingding
Expected Outputs:
Error 2: Illegal Value
Value Must Be A Number
Enter Foreign Value
Value Must Be A Positive Number
Currency Conversion Integration Test: Illegal Foreign Value = Error
Inputs: Wingding
Expected Outputs:
Error 2: Illegal Value
Value Must Be A Number
Enter Foreign Value
Value Must Be A Positive Number CURRENCY CONVERSION 23