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;

public class Main {
    public static void main(String[] srgs) {

        Scanner sc = new Scanner(System.in); // ??????????????????????????????.

        // ?????????????????? int ?????¨??????????????\???????????????.
        // ??????????????????????????? 0 ????????????.
        while (true) {
            int x = sc.nextInt();
            String op = sc.next();
            int y = sc.nextInt();
            if (op.equals("?")) { break; }
            if (op.equals("+")) { System.out.println(x + y); }
            if (op.equals("-")) { System.out.println(x - y); }
            if (op.equals("*")) { System.out.println(x * y); }
            if (op.equals("/")) { System.out.println(x / y); }
        }
    }
}