Question

JAVA

Write a program that prompts the user to enter the exchange rate from currency in U.S. dollars to Saudi Riyals. Prompt the user to enter 0 to convert from U.S. dollars to Saudi Riyals and 1 to convert from Saudi Riyal and U.S. dollars. Prompt the user to enter the amount in U.S. dollars or Saudi Riyal to convert it to Saudi Riyal or U.S. dollars, respectively.

1. Write a program that prompts the user to enter the exchange rate from currency in U.S. dollars to Saudi Riyals. Prompt the user to enter 0 to convert from U.S. dollars to Saudi Riyals and 1 to convert from Saudi Riyal and U.S. dollars. Prompt the user to enter the amount in U.S. dollars or Saudi Riyal to convert it to Saudi Riyal or U.S. dollars, respectively.

Here are the sample runs:

Enter the exchange rate from dollars to SR: 3.75
Enter 0 to convert dollars to SR and 1 vice versa: 0
Enter the dollar amount: 100
$100.0 is 375.0 SR

Answer 1

SOLUTION-
I have solve the problem in Java code with comments and screenshot for easy understanding :)

CODE-

//java code
import java.util.Scanner;
//main class
public class Main
{
    //main method
public static void main(String args[])
{
    double resultDoller=0;
    double resultSR=0;
    //Create scanner
    Scanner scan = new Scanner(System.in);
    System.out.print("Enter the exchange rate from dollars to SR: ");
    double rate=scan.nextDouble(); //read dollar to convert
  
    //ASK USER FOR A OPTION IF '0' THEN USD TO SR OTHERWISE SR TO USD
    System.out.print("Enter 0 to convert from Dollars to SR and 1 to viceversa: ");
    int ch=scan.nextInt();
     //for teh user choice
    switch(ch)
    {
        case 0:
            System.out.print("Enter the dollar amount: ");
            double dollar = scan.nextDouble(); //Input the amount of usd from user
            resultDoller = rate*dollar; //convert dollar to SR
            System.out.print("$"+dollar+ " is " +resultDoller+" SR"); //display the result
            break;
      
        case 1:
            System.out.println("Enter the SR amount: ");
            double SR = scan.nextDouble(); //Input the amount of SR from user
            resultSR = SR / rate; //convert SR to dollar
            System.out.printf("%.lf SR is $%.2f",SR,resultSR); //display the result
            break;
          
        default:
            System.out.printf("Incorrect input");
          
    }
  
}

}

SCREENSHOT-

IF YOU HAVE ANY DOUBT PLEASE COMMENT DOWN BELOW I WILL SOLVE IT FOR YOU:)
----------------PLEASE RATE THE ANSWER-----------THANK YOU!!!!!!!!----------