Assignment 73

import java.util.Scanner;

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

		double a, b, c;
		String op;

		do
		{
			System.out.print("> ");
			a  = keyboard.nextDouble();
			op = keyboard.next();
			b  = keyboard.nextDouble();

			if (op.equals("+"))
				c = a + b;
            else if (op.equals("-"))
                c = a - b;
            else if (op.equals("*"))
                c = a * b;
            else if (op.equals("/"))
                c = a / b;
			else
			{
				System.out.println("Undefined operator: '" +op+ "'.");
				c = 0;
			}

			System.out.println(c);

		} while (a != 0);
    }
}