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 sc = new Scanner(System.in);
        ArrayList<Integer> numList = new ArrayList<Integer>();
        while(sc.hasNext()){
            int a = sc.nextInt();
            String s = sc.next();
            int b = sc.nextInt();
            if(s.contains("?")){
                break;
            }else if(s.contains("+")){
                numList.add(a + b);
            }else if(s.contains("-")){
                numList.add(a - b);
            }else if(s.contains("*")){
                numList.add(a * b);
            }else if(s.contains("/")){
                numList.add(a / b);
            }
        }
        for(int i = 0; i < numList.size(); i++){
            System.out.println(numList.get(i));
        }
    }
}