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.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.equals("?"))break;
		
		int ans = 0;
		
		switch(op) {
		case "+":
			ans = a + b;
			break;
		case "-":
			ans = a - b;
			break;
		case "*":
			ans = a * b;
			break;
		case "/":
			ans = a / b;
			break;
			
		}
		  System.out.println(ans);

	}
   }
}