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);
		String st = null;
		String[] str = new String[3];
		int a;
		int b;
		String op;
		int result;

		do {
			st = sc.nextLine();
			str = st.split(" ");
			result = 0;

			a = Integer.parseInt(str[0]);
			op = str[1];
			b = Integer.parseInt(str[2]);

			if (op.equals("?")) {
				sc.close();
				break;
			}

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


	}

}