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: Wrong Answer)

import java.util.ArrayList;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO ?????????????????????????????????????????????


		Scanner scan = new Scanner(System.in);
		ArrayList<Integer> list = new ArrayList<Integer>();

		String a = null;
		String b = null;
		String c = null;


		while(scan.hasNext()){

			a = scan.next();
			b = scan.next();
			c = scan.next();

			if(!"?".equals(b)){

				int intA = 0;
				int intC = 0;
				try{
					intA = Integer.parseInt(a);
					intC = Integer.parseInt(c);
				}catch(NumberFormatException e){
					System.out.println(e);
				}

				int intAnser = 0;

				if("+".equals(b)){

					intAnser = intA + intC;
				}else if("-".equals(b)){

					intAnser = intA - intC;
				}else if("*".equals(b)){

					intAnser = intA * intC;
				}else{

					intAnser = intA / intC;
				}


				list.add(intAnser);

			}else{

				scan.close();
				break;
			}

		}

		for(int i = 0; i < list.size(); i++){

			int intResult =list.get(i);
			System.out.println(i + ":" + intResult);
		}


	}
}