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 s = new Scanner(System.in);
		while (s.hasNext()) {
			int a = Integer.parseInt(s.next());
			char op = s.next().charAt(0);
			int b = Integer.parseInt(s.next());
			switch (op) {
				case '+':
					a += b;
					break;
				case '-':
					a -= b;
					break;
				case '*':
					a *= b;
					break;
				case '/':
					a /= b;
					break;
				case '?':
					return;
			}
			System.out.println(a);
		}
	}
}