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: Time Limit Exceeded)

using System;
using System.Collections.Generic;

//namespace _4_C

class Program
{
    static void Main(string[] args)
    {
        //???????????????3????????????????????????????????????
        string readData = Console.ReadLine();

        //???????????¨??????????????????????????????a,b,c???????????????????????????
        string[] readDataValues = readData.Split(' ');
        int a = int.Parse(readDataValues[0]);
        string op = readDataValues[1].ToString();
        int b = int.Parse(readDataValues[2]);

        while (true)
        {
            int c = 0;
            if (op == "?")
            {
                break;
            }
            //???????????????????????£????????????
            if (op == "+")
            {
                c = a + b;
                Console.WriteLine(c);
            }
            else if (op == "-")
            {
                c = a - b;
                Console.WriteLine(c);
            }
            else if (op == "*")
            {
                c = a*+ b;
                Console.WriteLine(c);
            }
            else if (op == "/")
            {
                c = a / b;
                Console.WriteLine(c);
            }
            
        }
    }
}