Calculator2 Main.java

package com.tinkeracademy.ap;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

//
public class Main {
	public static void main(String[] args) throws FileNotFoundException {
		Scanner s = new Scanner(new File("input.txt"));
		int operand = 0;
		String op = "";
		int result = 0;
		while (!op.equals("=")) {
			operand = s.nextInt();
			if (op.equals("+")) {
				result = result + operand;
			} else if (op.equals("-")) {
				result = result - operand;
			} else {
				result = operand;
			}
			op = s.next();
		}
		System.out.println("result=" + result);
		s.close();
	}
}