try {
            int divisor, dividend, remainder;
            String input;
            BufferedReader keyboard = new BufferedReader(new InputStreamReader (System.in));
            System.out.println("This program calculates the MCD of two numbers (D,d)");
            System.out.print("Introduce a number: ");
            input = keyboard.readLine();
            dividend = Integer.parseInt(input);
            System.out.print("Introduce another number: ");
            input = keyboard.readLine();
            divisor = Integer.parseInt(input);
            System.out.println(
                    "Dividend/Divisor | Remainder");

            do{
                remainder = dividend%divisor;
                System.out.println(
                    dividend + "                 " + remainder);
                dividend = divisor;
                divisor = remainder;
            }while(remainder >= divisor && remainder != 0);
            System.out.println("The MCD is " + dividend);

        } catch (Exception e) {
        }
    }