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 ITP1_1_A
{
    class Program
    {
        static void Main(string[] args)
        {
            for (int i = 0; ; i++)
            {
                int answer = 0;
                string[] inputString = Console.ReadLine().Split();
                if (inputString[1] == "?")
                {
                    break;
                }
                if (inputString[1] == "+")
                {
                    answer = int.Parse(inputString[0]) + int.Parse(inputString[2]);
                }
                if (inputString[1] == "-")
                {
                    answer = int.Parse(inputString[0]) - int.Parse(inputString[2]);
                }
                if (inputString[1] == "*")
                {
                    answer = int.Parse(inputString[0]) * int.Parse(inputString[2]);
                }
                if (inputString[1] == "/")
                {
                    answer = int.Parse(inputString[0]) / int.Parse(inputString[2]);
                }

                Console.WriteLine(answer);
            }

        }
    }
}