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 C# (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;
namespace AOJ {
  public class AOJ {
    public static void Main(string[] args) {
      bool isContinue = true;
      while(isContinue) {
        string[] input = Console.ReadLine().Split(' ').ToArray();
        switch(input[1]) {
        case "+":
          Console.WriteLine(int.Parse(input[0]) + int.Parse(input[2]));
          break;
        case "-":
          Console.WriteLine(int.Parse(input[0]) - int.Parse(input[2]));
          break;
        case "*":
          Console.WriteLine(int.Parse(input[0]) * int.Parse(input[2]));
          break;
        case "/":
          Console.WriteLine(Math.Floor(double.Parse(input[0]) / double.Parse(input[2])));
          break;
        case "?":
          isContinue = false;
          break;
        }
      }
    }
  }
}