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.ArrayList;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);

		boolean flg = true;
		ArrayList<Integer> list = new ArrayList<Integer>();

		int ans = 0;

		while (flg) {
			scanner.hasNext();

			int a = scanner.nextInt();
			String op = scanner.next();
			int b = scanner.nextInt();

			if ("?".equals(op)) {
				flg = false;
				break;
			}else if("+".equals(op)){
				ans = a + b;
			}else if("-".equals(op)){
				ans = a - b;
			}else if("/".equals(op)){
				ans = a / b;
			}else if("*".equals(op)){
				ans = a * b;
			}

			list.add(ans);
		}

		for (int ttt : list) {
			System.out.println(ttt);
		}

	}
}