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.Linq;

namespace Sample
{
	class Program
	{
		static void Main(string[] args)
		{
			while (true)
			{
				var array = Console.ReadLine().Split();
				var a = int.Parse(array[0]);
				var op = array[1];
				var c = int.Parse(array[2]);

				var result = 0;
				switch (op)
				{
					case "+":
						result = a + c;
						break;
					case "-":
						result = a - c;
						break;
					case "*":
						result = a * c;
						break;
					case "/":
						result = a / c;
						break;
					default:
						return;
				}
				Console.WriteLine(result);
			}
		}
	}
}