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
{
	public static void Main()
	{
		while (true) {
			var line = Console.ReadLine().Split(' ');
			var a = int.Parse(line[0]);
			var b = int.Parse(line[2]);
			if (line[1] == "?")
			{
				break;
			}
			switch (line[1]) {
				case "+": Console.WriteLine(a + b); break;
				case "-": Console.WriteLine(a - b); break;
				case "/": Console.WriteLine(a / b); break;
				case "*": Console.WriteLine(a * b); break;

			}

		}
	}
}