// Page 228-230

import java.util.Scanner;
public class DividedByZeroDemo   //Prog_14_3
{
	private int nume, deno;
	private double quo;
	public void doIt()
	{
		Scanner kb = new Scanner(System.in);
		try
		{
			System.out.print("Enter nume: ");
			nume = kb.nextInt();
			System.out.print("Enter deno: ");
			deno = kb.nextInt();
			if(deno == 0)
				throw new DividedByZeroException();
			quo = (double)nume/deno;
			System.out.println(nume + "/" + deno +" = " + quo);
		}
		catch(DividedByZeroException e)
		{
			System.out.println(e.getMessage());
			this.giveSecondChance();
		}
	}
	public void giveSecondChance()
	{
		Scanner kb = new Scanner(System.in);
		System.out.println("Try again.");
		System.out.print("Enter nume: ");
		nume = kb.nextInt();
		System.out.print("Enter deno. ");
		System.out.print("Be sure not zero - ");
		deno = kb.nextInt();
		if(deno == 0)
		{
			System.out.print("Oh, no - can not devidecd by zero! \n\n");
			System.exit(0);
		}
		quo = (double)nume/deno;
		System.out.println(nume + "/" + deno +" = " + quo);
	}
	public static void main(String[] args)
	{
		DividedByZeroDemo oneTime = new DividedByZeroDemo();
		oneTime.doIt();
	}

}