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At present, you have decided only to trade in the following currencies

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IS187 – Java Programming I

Foreign Currency (100 points + 5 ex.cr.)                               2022

You have decided to dabble in the foreign currency market, and to assist your investing, you are going to code a Currency Calculator that computes the current value of each type of currency you are planning to buy.

 

Part A:

At present, you have decided only to trade in the following currencies: GBP (British Pounds), EUR (Common Market Euros), and JPY (Japanese Yen).   When it starts, your program will ask for the current exchange rates, after which it will begin a ‘valuation loop’ that lets you select the currency type and then enter the amount of that currency, whereupon the program tells you how much that would be in US dollars. A sample run would look like this (items in bold are user inputs):

Welcome to the currency calculator!

 

Please enter the currency rate Per US $ of the following currencies:

 

EUR: 1.3238

GBP: 1.52512

JPY: .0105946

 

Select currency for valuation (1=EUR, 2=GBP, 3=JPY, 0=Quit): 2

How many Pounds Sterling  are you buying? 100

 

That will have a value of $ 152.51.

 

Currency for valuation (1=EUR, 2=GBP, 3=JPY, 0=Quit): 3

How many Yen are you buying? 15000

 

That will have a current value of $ 158.90

 

Currency for valuation (1=EUR, 2=GBP, 3=JPY, 0=Quit): 1

How many Euros are you buying? 250

 

That will have a current value of $ 330.95

 

Currency for valuation (1=EUR, 2=GBP, 3=JPY, 0=Quit): 0

 

Thanks for using the currency calculator!

 

The currency valuation is a simple multiplication of the units entered times the rate (entered at the beginning of the program).  In the above program, after input of the currency rates, you may loop any number of times asking for currency type and amount, and the user does not have to select the currencies in any particular order (and can re-select a currency any number of times).

 

Also note that when the program asks for the quantity of the currency, it uses the correct name (e.g., Pounds Sterling, Yen, etc.).  The bold and italics, however, are not required – that is just shown above for emphasis.

 

 

 

 

Part B:

After completing the program according to the Part A specifications, you will then modify its operation as follows:

1) Add two additional currencies to be purchased: Canadian dollars (CAD) and Russian Rubles (RUB).

2) The Valuation loop should include an option #9: to change the stored exchange rates for all the currencies

3) The program should accumulate the total valuation of all proposed currency purchases in the session and print that amount after the operator chooses to quit the valuation loop.

 

A sample run for after completing Part B would look like this (items in bold are user inputs):

Welcome to the currency calculator!

 

Please enter the currency rate Per US $ of the following currencies:

 

EUR: 1.3238

GBP: 1.52512

JPY: .0105946

CAD: .98629

RUB: .033286

 

Select currency for valuation (1=EUR, 2=GBP, 3=JPY, 4=CAD, 5=RUB, 9=New Rates, 0=Quit): 2

How many Pounds Sterling  are you buying? 100

 

That will have a value of $ 152.51.

 

Select currency for valuation (1=EUR, 2=GBP, 3=JPY, 4=CAD, 5=RUB, 9=New Rates, 0=Quit): 3

How many Yen are you buying? 15000

 

That will have a current value of $ 158.90

 

Select currency for valuation (1=EUR, 2=GBP, 3=JPY, 4=CAD, 5=RUB, 9=New Rates, 0=Quit): 1

How many Euros are you buying? 250

 

That will have a current value of $ 330.95

 

Select currency for valuation (1=EUR, 2=GBP, 3=JPY, 4=CAD, 5=RUB, 9=New Rates, 0=Quit): 4

How many Canadian dollars are you buying? 200

 

That will have a current value of $ 197.26

 

Select currency for valuation (1=EUR, 2=GBP, 3=JPY, 4=CAD, 5=RUB, 9=New Rates, 0=Quit): 5

How many Russian Rubles are you buying? 10000

 

That will have a current value of $ 332.86

 

Select currency for valuation (1=EUR, 2=GBP, 3=JPY, 4=CAD, 5=RUB, 9=New Rates, 0=Quit): 9

Currency (1=CAD, 2=GBP, 3=EUR, 4=JPY, 5=RUB, 9=New Rates, 0=Quit): 9

 

Please enter the currency rate Per US $ of the following currencies:

 

EUR: 1.344

GBP: 1.545

JPY: .01205

CAD: .9952

RUB: .0303

 

Select currency for valuation (1=EUR, 2=GBP, 3=JPY, 4=CAD, 5=RUB, 9=New Rates, 0=Quit): 5

How many Russian Rubles are you buying? 5000

 

That will have a current value of $ 151.50

 

Select currency for valuation (1=EUR, 2=GBP, 3=JPY, 4=CAD, 5=RUB, 9=New Rates, 0=Quit): 0

 

The total value of the proposed currency purchases was: $1,323.98

 

 

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