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;

namespace HelloWorld
{
    class Program
    {
        static void Main(string[] args)
        {
            while (true)
            {
                char[] dlm = " ".ToCharArray();
                string[] str = Console.ReadLine().Split(dlm);

                int a = int.Parse(str[0]);
                int b = int.Parse(str[2]);
                string op = str[1];
                int r = 0;

                if (op == "+") r = a + b;
                else if (op == "-") r = a - b;
                else if (op == "*") r = a * b;
                else if (op == "/") r = a / b;
                else if (op == "?") break;

                Console.WriteLine(r);

            }


        }
    }
}