public class testCalculator{
	public static void main(String[] args){
		Calculator calc = new Calculator();
		double num1 = 10.0;
		double num2 = 5.0;

		System.out.println(calc.getValue());
		calc.add(num1);
		System.out.println(calc.getValue());
		calc.multiply(3);
		System.out.println(calc.getValue());
		calc.subtract(num2);
		System.out.println(calc.getValue());
		calc.divide(2);
		System.out.println(calc.getValue());
		calc.clear();
		System.out.println(calc.getValue());
	}
}