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