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.io.BufferedReader;
import java.io.InputStreamReader;

class Main {
	
	public static void main(String[] args) throws Exception {
		
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String line;
			
			while((line = br.readLine()) != null){
				String[] arr = line.split(" ");
				int a = Integer.parseInt((arr[0]));
				String op = arr[1];
				int b = Integer.parseInt((arr[2]));
				int ans = 0;
				if("?".equals(op)){
					break;
				} else if( op == "+" ){
					ans = a + b;
				} else if ( op == "-" ){
					ans = a - b;
				} else if ( op == "*" ){
					ans = a * b;
				} else if ( op == "/" ){
					ans = a / b;
				} 
				System.out.println(ans);
			
			}
	}
}