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;
using System.Text;

namespace ConsoleApplication9
{
    class Program
    {
        static void Main(string[] args)
        {

            String[] str = Console.ReadLine().Split(' ');
            int a = int.Parse(str[0]);
            String op = str[1];
            int b = int.Parse(str[2]);
            int x=0;
            while (op != "?")
            {
                if (op == "+")
                {
                    x = a + b;
                }
                else if (op=="-")
                {
                    x = a - b;
                }
                else if (op=="*")
                {
                    x = a * b;
                }else if(op=="/")
                {
                    x = a / b;
                }
                Console.WriteLine(x);
                str = Console.ReadLine().Split(' ');
                a = int.Parse(str[0]);
                op = str[1];
                b = int.Parse(str[2]);
            }




        }
    }
}