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

public class Main {
    public static void main(String[] args)throws Exception {
    	InputStreamReader isr = new InputStreamReader(System.in);
        BufferedReader br = new BufferedReader(isr);

        while(true){
        	int ans = 0;
        	String[] input = br.readLine().split(" "); 
            int a = Integer.parseInt(input[0]);
            String op = input[1]; 
            int b = Integer.parseInt(input[2]);
            if(op.equals ("+")){
            	ans = a + b;
            }else if(op.equals ("-")){
            	ans = a - b;
            }else if(op.equals ("*")){
            	ans = a * b;
            }else if(op.equals ("/")){
            	ans = a / b;
            }else{
            	break;
            }
            System.out.println(ans);
        }
        
    }
}