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;

	public class Class1
	{
		public static void Main()
		{   
			string op="?";
			do{
			
				string dataSet=Console.ReadLine();
				string[] data=dataSet.Split();
				int a=int.Parse(data[0]);
				 op =data[1];
				int b =int.Parse(data[2]);
		
				switch(op)
				{
				case "+":
				Console.WriteLine(a+b);
				break;
			   
				case "-":
				Console.WriteLine(a-b);
				break;
			
				case "*":
				Console.WriteLine(a*b);
				break;
			
				case "/":
				
			    Console.WriteLine(a/b);
				break;
				
				case "?":
				break;
				}
				
			}while(op!="?");
			
		}
	}