Question

In a file called ThreeOperations.java, write a program that:

• Asks the user to enter two real numbers (doubles, not integers) called N1 and N2. It is OK if your program crashes when the user does not enter valid double numbers.
• Computes and displays the following operations between the two: multiplication, division, exponentiation. For the results of these two operations, only two decimal digits should be displayed.

For example: if the user enters numbers 11 and 7, your program output should look EXACTLY like this:

Please enter real number N1: 11
Please enter real number N2: 7
11.000000 * 7.000000 = 77.00
11.000000 / 7.000000 = 1.57
11.000000 raised to the power of 7.000000 = 19487171.00

As another example: if the user enters numbers 3.25 and 10.3, your program output should look EXACTLY like this:

Please enter real number N1: 3.25
Please enter real number N2: 10.3
3.250000 * 10.300000 = 33.48
3.250000 / 10.300000 = 0.32
3.250000 raised to the power of 10.300000 = 187239.99

Answer 1

import java.util.Scanner;

public class TestOperations {
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       // reading numbers
       System.out.println("Please enter real number N1: ");
       double n1 = sc.nextDouble();
       System.out.println("Please enter real number N2: ");
       double n2 = sc.nextDouble();
       // printing product
       System.out.printf("%f * %f = %f\n", n1, n2, n1 * n2);
       // printing division
       System.out.printf("%f / %f = %f\n", n1, n2, n1 / n2);
       // printing power
       System.out.printf("%f raised to the power of %f = %f", n1, n2, Math.pow(n1, n2));
   }
}

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