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 Project
{
	class MainClass
	{
		public static void Main(string[] args)
		{
			while(true)
			{
				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:
						goto fin;
				}
			}
		fin:
			return;
		}
	}
}