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 SimpleCalculator
{
	class MainClass
	{
		public static void Main (string[] args)
		{
			while (true) {
				int answer = 0;
				string input = Console.ReadLine ();

				char[] CharSeparators = new char[] { ' ' };
				string[] array = input.Split (CharSeparators);

				string array1 = array [0];
				string array2 = array [1];
				string array3 = array [2];

				int a = int.Parse (array1);
				String op = array2;
				int b = int.Parse (array3);

				if(op.Equals("?")){
					break;
				}else if(op.Equals("+")){
					answer=a+b;Console.WriteLine(answer);
				}else if(op.Equals("-")){
					answer=a-b;Console.WriteLine(answer);
				}else if(op.Equals("*")){
					answer=a*b;Console.WriteLine(answer);
				}else if(op.Equals("/")){
					answer=a/b;Console.WriteLine(answer);
				}
			}
		}
	}
}