Java and Algorithmic Thinking for the Complete Beginner

Chapter 38 More with Subprograms

38.1 Simple Exercises with Subprograms

Exercise 38.1-1 A Simple Currency Converter

Do the following:

i)Write a subprogram named displayMenu that displays the following menu.

1)Convert USD to Euro (EUR)

2)Convert Euro (EUR) to USD

3)Exit

ii)Using the subprogram cited above, write a Java program that displays the previously mentioned menu and prompts the user to enter a choice (of 1, 2, or 3). If choice 1 or 2 is selected, the program must prompt the user to enter an amount of money and then it must calculate and display the corresponding converted value. The process must repeat as many times as the user wishes.

It is given that $1 = 0.94 EUR (€).

Solution

According to the “Ultimate” rule, the while-loop of the ...