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 csharptest
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] str = Console.ReadLine().Split(' ');
            double []ans=new double[100000];
            int n;
            for (n = 0; str[1] != "?"; n++)
            {
                if (str[1] == "+")
                {
                    ans[n] = int.Parse(str[0]) + int.Parse(str[2]);
                }
                else if (str[1] == "-")
                {
                    ans[n] = int.Parse(str[0]) - int.Parse(str[2]);
                }
                else if (str[1] == "*")
                {
                    ans[n] = int.Parse(str[0]) * int.Parse(str[2]);
                }
                else if (str[1] == "/")
                {
                    ans[n] = Math.Floor(double.Parse(str[0]) / double.Parse(str[2]));
                }
                str = Console.ReadLine().Split(' ');
            }
            for (int m = 0; m < n; m++)
            {
                Console.WriteLine(ans[m]);
            }
        }
    }
}