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.Collections;
//using System.Linq;
//using System.Text;
//using System.Threading.Tasks;

//namespace _1_A
//{
class Program
{
    static void Main(string[] args)
    {
        ArrayList array = new ArrayList();
        int[] suu = new int[2];
        int ans = 0;
        string inp = Console.ReadLine();
        string[] oup = inp.Split(' ');

        suu[0] = int.Parse(oup[0]);
        suu[1] = int.Parse(oup[2]);
        inp = oup[1];

        while (inp.CompareTo("?") != 0)
        {
            if (inp.CompareTo("+") == 0)
                ans = suu[0] + suu[1];
            else if (inp.CompareTo("-") == 0)
                ans = suu[0] - suu[1];
            else if (inp.CompareTo("*") == 0)
                ans = suu[0] * suu[1];
            else if (inp.CompareTo("/") == 0)
                ans = suu[0] / suu[1];

            array.Add(ans);
            inp = Console.ReadLine();
            oup = inp.Split(' ');
            suu[0] = int.Parse(oup[0]);
            suu[1] = int.Parse(oup[2]);
            inp = oup[1];
        }

        foreach (object obj in array)
        {
                Console.WriteLine(obj.ToString());
        }
        //Console.Read();
    }
}
//}