Assignment 74

 import java.util.Scanner;
 
 public class SquareRoot
 {
     public static void main( String[] args )
     {
         Scanner keyboard = new Scanner(System.in);
         
         System.out.println("This program will find the square root of a number.");
         System.out.print("Your number: ");
         double given = keyboard.nextDouble();
         while (given < 0)
         {
             System.out.println("Input must be a positive number");
             System.out.print("Your number: ");
             given = keyboard.nextDouble();
         }
         
         double root = Math.sqrt(given);
         
         System.out.println("The square root of " +given+ " is " +root+ ".");
     }
 }