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.IOException;
import java.io.InputStreamReader;

class Main{
    public static void main(String[] args) throws IOException{
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	while(true){
            String[] strArr = br.readLine().split(" ");

            int a = Integer.parseInt(strArr[0]);
            String op = strArr[1];
            int b = Integer.parseInt(strArr[2]);

            if(op.equals("?")) break;

            switch(op){
            	case "+":
            		System.out.println(a + b);
            		break;
            	case "-":
            		System.out.println(a - b);
            		break;
            	case "*":
            		System.out.println(a * b);
            		break;
            	case "/":
            		System.out.println(a / b);
            		break;
            	default:
            		break;
            }
    	}
    }
}