Assignment 74, Safe Square Root

Code

   ///Name: Stella Koliavas
   ///Period: 5
   ///File Name: BabyCalc.java
   ///Date Finshed: 1/14/16
   
  import java.util.Scanner;

    public class Root
    {
        public static void main(String[] args)
        {
        
        Scanner siri = new Scanner(System.in);
        
        int num, num2;
        
        System.out.println("Type in a number and I'll square root it");
        System.out.print("Number: ");
        num = siri.nextInt();
        
            
        if (num == 0)
               System.out.println("You can not enter 0, just for that you dont get to play anymore");
        
        while (num != 0 && num < 0)
            {
                if (num < 0)
                {
                    System.out.println("You can not enter a negative number!");
                    System.out.print("Try again: ");
                    num = siri.nextInt();
                
                if (num > 0)
                {
                    System.out.println(Math.sqrt(num));
                    System.out.println(" ");
                }
                }
            num++;
            }
    }}  


        
    

Picture of the output