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 AOJ
{
    class Program
    {
        static void Main(string[] args)
        {

            {
                

                while (true)
                {

                    var read = Console.ReadLine();
                    var temp_string = read.Split(' ');

                    int a = int.Parse(temp_string[0]), b = int.Parse(temp_string[2]), ans=0;
                    switch (temp_string[1])
                    {
                        case "+":
                            {
                                ans = a + b;
                                break;
                            }
                        case "-":
                            {
                                ans = a - b;
                                break;
                            }
                        case "*":
                            {
                                ans = a * b;
                                break;
                            }
                        case "/":
                            {
                                ans = a / b;
                                break;
                            }
                    }

                    if(temp_string[1]=="?")
                    { break; }
                    Console.WriteLine(ans);
                }

               
            }
        }
    }
}