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 TestSpace
{
    class Test
    {
        static void Main(string[] args)
        {
            string[] arrRead;
            int a, b;
            string op;

            while (true)
            {
                arrRead = Console.ReadLine().Split(' ');
                a = int.Parse(arrRead[0]);
                b = int.Parse(arrRead[2]);
                op = arrRead[1];

                switch (op)
                {
                    case "+":
                        Console.WriteLine("{0}", a + b);
                        break;
                    case"-":
                        Console.WriteLine("{0}", a - b);
                        break;
                    case "*":
                        Console.WriteLine("{0}", a * b);
                        break;
                    case "/":
                        Console.WriteLine("{0}", a / b);
                        break;
                    default:
                        goto LOOPEND;
                }
            }
LOOPEND: ;
        }
    }
}