package com.company;
import java.util.Scanner;
public class Main {

    public static void main(String[] args) {
        System.out.println("SQUARE ROOT!");
        System.out.println("Enter a number:");
        Scanner keyboard = new Scanner(System.in);
        int num = keyboard.nextInt();

        if (num < 0)

            do {
                System.out.println("You can't take the square root of a negative number, silly.");
                System.out.println("Try Again");
                num = keyboard.nextInt();

            } while (num > 0);
            double num2 = Math.sqrt(num);
            System.out.println("The square root of " + num + " is " + num2);
    }

}