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: Wrong Answer)

using System;

namespace AizuOnLine
{
    class Program
    {
        static void Main(string[] args)
        {
            var data = Console.ReadLine().Split(' ');
            var num1 = Convert.ToInt32(data[0]);
            var num2 = Convert.ToInt32(data[2]);
            var op = data[1];

            if (op == "?") { return; }

            int ans = 0;
            if (op == "+")
            {
                ans = num1 + num2;
            }
            else if (op == "-")
            {
                ans = num1 - num2;
            }
            else if (op == "*")
            {
                ans = num1 * num2;
            }
            else
            {
                ans = num1 / num2;
            }

            Console.WriteLine(ans);
        }
    }
}