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;
using System.Collections.Generic;

class Program
{
	static void Main(string[] args)
	{
        List<int> a = new List<int>();
       // List<int> b = new List<int>();


        //string[] s = Console.ReadLine().Split(' ');

        // int a = int.Parse(Console.ReadLine());

        while(true)
        {
            string[] s = Console.ReadLine().Split(' ');

            switch(s[1])
            {
                case "+":
                    a.Add(int.Parse(s[0]) + int.Parse(s[2]));
                    break;
                case "-":
                    a.Add(int.Parse(s[0]) - int.Parse(s[2]));
                    break;
				case "/":
					a.Add(int.Parse(s[0]) / int.Parse(s[2]));
					break;
				case "*":
					a.Add(int.Parse(s[0]) * int.Parse(s[2]));
                    break;
                default:
                    goto ExitLoop;
                    
            }
           
        }
        ExitLoop:;

        for (int i = 0; i < a.Count;i++)
        {
            Console.WriteLine("{0}",a[i]);
        }

		//Console.WriteLine("");


	}
}