package myCalculator;

import java.util.Scanner;

public class CalculatorFunctions {

	private static CalculatorFunctions calculator;
	Scanner sc1 = new Scanner(System.in);

	public static CalculatorFunctions cal() {
		if (calculator == null) {
			calculator = new CalculatorFunctions();
			System.out.println("only one time instance created");
		}
		return calculator;
	}

	public int value1() {
		System.out.println("enter number 1");
		return sc1.nextInt();
	}

	public int value2() {
		System.out.println("enter number 2");
		return sc1.nextInt();
	}

	public int add(int a, int b) {
		System.out.println("addition is = " + (a + b) + "\n");
		return a + b;
	}

	public int subtract(int a, int b) {
		System.out.println("subtraction is = " + (a - b) + "\n");
		return a - b;
	}

	public int multiply(int a, int b) {
		System.out.println("Mutliplication is = " + (a * b) + "\n");
		return a * b;
	}

	public int divide(int a, int b) {
		int c = 0;
		try {
			c = a / b;
			System.out.println("division is = " + c + "\n");
		} catch (ArithmeticException e) {
			System.out.println(e.getMessage());
		}
		return c;
	}
}