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 num = new Scanner(System.in);
        while(true) {
            int a = num.nextInt();
            char s = num.next().charAt(0);
            int b = num.nextInt();
            int result = 0;

            if(s == '+') {
                result = a + b;
            } else if(s == '-') {
                result = a - b;
            } else if(s == '*') {
                result = a * b;
            } else if(s == '/') {
                result = a / b;
            } else {
                break;
            }
            System.out.println(result);
        }
    }
}