package CalculatorExample1;

class Calc {
	public int add(int a, int b) {
		return a + b;
	}

	public int sub(int a, int b) {
		return a - b;
	}

	public int mul(int a, int b) {
		return a * b;
	}

	public int div(int a, int b) {
		if (b == 0) {
			return -1;
		} else {
			return a / b;
		}
	}
}

public class CalcExample1 {

	public static void main(String args[]) {
		Calc c = new Calc();
		int result = c.add(1, 1);
		System.out.println("result = " + result);

		// result = c.add(1.0,1.0); This won't compile. There is no add method
		// that takes a double and another double.
	}
}