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: Wrong Answer)

import java.util.Scanner;


public class Main {

	public static void main(String [] args) {
		
		Scanner sc = new Scanner(System.in);
		
		while(true) {
			
			int a = sc.nextInt();
			String op = sc.next();
			int b = sc.nextInt();
			
			if(op == "?") {
				break;
				
			}else if(op == "+") {
				System.out.println(a + b);
				
			}else if(op == "-") {
				System.out.println(a - b);
				
			}else if(op == "*") {
				System.out.println(a * b);
				
			}else if(op == "/") {
				System.out.println(a / b);
				
			}else {
				break;     //これ必要ないかもしれない
			}
		}
		
				
	}
}