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.*;

public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        while (true) {
            int a = input.nextInt();
            String op = input.next();
            char c = op.charAt(0);
            int b = input.nextInt();
            if (c == '?') break;
            int ret = 0;
            if (c == '+') ret = a + b;
            else if (c == '-') ret = a - b;
            else if (c == '*') ret = a * b;
            else if (c == '/') ret = a / b;
            System.out.println(ret);
        }
    }
}