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: Wrong Answer)

using System;

namespace Project
{
	class MainClass
	{
		public static void Main(string[] args)
		{
			string s = Console.ReadLine();
			string[] sar = s.Split(' ');
			int a = int.Parse(sar[0]);
			int b = int.Parse(sar[2]);
			switch (sar[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;
				default:
					break;
			}
		}
	}
}