Assignemnt #74 Safe Square Root

Code

    Name: Iaroslav Titov
    Period: 7
    Project Name: SQRT
    File Name: SQRT.java
    Date: 1/11/2015
    
import java.util.Scanner;
import java.util.InputMismatchException;

public class SQRT
{
	public static void main( String[] args ) throws Exception
	{
		Scanner keyboard = new Scanner(System.in);

		System.out.println("Square Root Time!!!");

		double num = 0;

		do
		{
			if (num < 0) System.out.println("You gotta input a positive number!!!");
			try
			{
				System.out.print("Enter a number: ");
				num = keyboard.nextDouble();
			}
			catch (InputMismatchException e)
			{
				System.out.println("WRONG INPUT!!!");
			}
		}
		while (num < 0);

		System.out.println();
		System.out.println("Square root of "+num+" is "+Math.sqrt(num));

	}
}


    

Picture of the output