Question

Write a Java that prompts the user like this: “Currency to convert to U.S. dollars: e = Euros, c= Chinese Yuan, r = Indian Rupees, b = Bitcoin: ”. Then depending on which letter the user enters, the program displays “Amount of Euros/Yuan/Rupees/Bitcoin to convert: ”. (Note: the second prompt should only name the one currency the user asked to convert, not all four currencies.) After the user enters the amount, the program displays “In U.S. dollars, that is $N”, (N is the amount converted to U.S. dollars).

1 Euro = 1.16 US dollar

1 Chinese yuan = 0.15 US dollar

1 Indian rupee = 0.015 US dollar

1 Bitcoin = 6923.80 US dollar

Answer 1

import java.util.*;
public class Main
{
   public static void main(String[] args) {
       System.out.print("Currency to convert to U.S. dollars: e = Euros, c= Chinese Yuan, r = Indian Rupees, b = Bitcoin:");
       Scanner sc = new Scanner(System.in);
       char c;
       c= sc.next().charAt(0);
       double d=0;
       if(c=='e')
       {
       System.out.print("Enter amount in Euros:");
       d=sc.nextDouble();
       d=d*1.16;//converting to us dollars
         
       }
       else if(c=='c')
       {
       System.out.print("Enter amount in Yuans:");
       d=sc.nextDouble();
       d=d* 0.15 ;//converting to us dollars
       }
       else if(c=='r')
       {
       System.out.print("Enter amount in Rupees:");
       d=sc.nextDouble();
       d=d*0.015 ;//converting to us dollars
      
       }
       else
       {
      
       System.out.print("Enter amount in Bitcoins:");
       d=sc.nextDouble();
       d=d*6923.80;//converting to us dollars
      
       }
       System.out.println("In U.S. dollars, that is $"+d);
   }
}

output:

Currency to convert to U.S. dollars: e = Euros, c= Chinese Yuan, r = Indian Rupees, b = Bitcoin:r                                                                                

Enter amount in Rupees:200                                                                                                                                                       

In U.S. dollars, that is $3.0