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;

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

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


			if (op == "?") break;

			if (op == "+")
			{
				System.Console.WriteLine(a + b);
			}
			else if (op == "-")
			{
				System.Console.WriteLine(a - b);
			}
			else if (op == "*")
			{
				System.Console.WriteLine(a * b);
			}
			else
			{
				System.Console.WriteLine(a / b);
			}
		}
	}
}