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 Aizu
{
    class OnlineJudge
    {
        public static void Main()
        {
            while(true) {
                string[] input = Console.ReadLine().Split();
                int[] value = new[] { int.Parse(input[0]), int.Parse(input[2]) };
                int output = 0;
                switch (input[1]) {
                    case "+":
                        output = value[0] + value[1];
                        break;
                    case "-":
                        output = value[0] - value[1];
                        break;
                    case "/":
                        output = value[0] / value[1];
                        break;
                    case "*":
                        output = value[0] * value[1];
                        break;
                    case "?":
                        return;
                }
                Console.WriteLine(output);
            }
        }
    }
}