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)

//ITP1_4_C

using System;
using System.Collections.Generic;


class Program
{
    static void Main(string[] args)
    {
        int[] ans = new int[100];
        int count = 0;

        while (true)
        {
            string[] sarray = (Console.ReadLine().Split(' '));          //??????????????????sarray???????????????

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

            if (op == "?")
                break;

            switch (op)
            {
                case "+":
                    ans[count++] = a + b;
                    break;

                case "-":
                    ans[count++] = a - b;
                    break;

                case "*":
                    ans[count++] = a * b;
                    break;

                case "/":
                    ans[count++] = a / b;
                    break;

                default:
                    break;
            }
        }

        for (int i = 0; i < count; i++)
            Console.WriteLine(ans[i]);
    }
}