Problem:
Simple Calculator

Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.

The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.

Input

The input consists of multiple datasets. Each dataset is given in the following format.

a op b

The input ends with a dataset where op = '?'. Your program should not process for this dataset.

Output

For each dataset, print the value in a line.

Constraints

0 ≤ a, b ≤ 20000

No divisions by zero are given.

Sample Input 1

1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0

Sample Output 1

3
38
26
10
108

Solution in JAVA (judge verdict: Accepted)

import java.util.Scanner;
import java.util.ArrayList;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int x;
        int y;
        String op;
        ArrayList<Integer> answer = new ArrayList<Integer>();

        while(true){
            x = sc.nextInt();
            op = sc.next();
            y = sc.nextInt();
            if(op.equals("?")) break;

            if(op.equals("+")) answer.add(x + y);
            else if(op.equals("-")) answer.add(x - y);
            else if(op.equals("*")) answer.add(x * y);
            else if(op.equals("/")) answer.add(x / y);
        }

        for(int i = 0; i < answer.size(); i++){
            System.out.println(answer.get(i));
        }

        sc.close();
    }
}