package com.testingdocs.sample.Questions;

/*
 * Disclaimer: Exchange rate varies from time to time
 * www.TestingDocs.com
 * 
 */
import java.util.Scanner;

public class DollarToRupeeConverter {
 //dollar to rupee exchange rate
 public final static double EXCHANGE_RATE=75.17;
 public static void main(String[] args) {
 int menuChoice=1;
 Scanner keyboard=new Scanner(System.in);
 while(menuChoice !=3) {
 System.out.println(" ------------------------------------ ");
 System.out.println(" Program Menu --- www.TestingDocs.com ");
 System.out.println(" ------------------------------------ ");

 System.out.println("1. Convert Dollars to Rupees?");
 System.out.println("2. Convert Rupees to Dollars?");
 System.out.println("3. Quit the Program.");
 System.out.print("Enter your menu choice :=");
 menuChoice = keyboard.nextInt();
 if(menuChoice < 1 || menuChoice > 3) {
 System.out.println("Invalid Choice. Please Try again");
 continue;
 }
 if(menuChoice ==1) {
 System.out.print("Enter the dollars:=");
 double dollars=keyboard.nextDouble();
 double rupees= dollars*EXCHANGE_RATE;
 System.out.println("Dollars " + dollars + " = Rupees " + rupees );
 }
 if(menuChoice ==2) {
 System.out.print("Enter the rupees:=");
 double rupees=keyboard.nextDouble();
 double dollars= rupees/EXCHANGE_RATE;
 System.out.println("Rupees " + rupees + " = Dollars " + dollars );
 }
 if(menuChoice ==3) {
 System.out.println("Have a nice day. GoodBye! ");
 }
 }
 }
}

Sample Run Output

————————————
Program Menu — www.TestingDocs.com
————————————
1.Convert Dollars to Rupees?
2.Convert Rupees to Dollars?
3.Quit the Program.
Enter your menu choice :=1
Enter the dollars:=2
Dollars 2.0 = Rupees 150.34
————————————
Program Menu — www.TestingDocs.com
————————————
1.Convert Dollars to Rupees?
2.Convert Rupees to Dollars?
3.Quit the Program.
Enter your menu choice :=2
Enter the rupees:=500
Rupees 500.0 = Dollars 6.6515897299454565
————————————
Program Menu — www.TestingDocs.com
————————————
1.Convert Dollars to Rupees?
2.Convert Rupees to Dollars?
3.Quit the Program.
Enter your menu choice :=4
Invalid Choice. Please Try again
————————————
Program Menu — www.TestingDocs.com
————————————
1.Convert Dollars to Rupees?
2.Convert Rupees to Dollars?
3.Quit the Program.
Enter your menu choice :=3
Have a nice day. GoodBye!