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 ConsoleApp11
{
    class Program
    {
        static void Main(string[] args)
        {
            for (;;) { 
            var A = Console.ReadLine().Split(' '); 
            
            int a1 = int.Parse(A[0]);
            string a2 = A[1];
            int a3 = int.Parse(A[2]);

           
                if (a2 == "+")
                {
                    Console.WriteLine(a1 + a3);
                }
                else if (a2 == "-")
                {
                    Console.WriteLine(a1 - a3);
                }
                else if (a2 == "*")
                {
                    Console.WriteLine(a1 * a3);
                }
                else if (a2 == "/")
                {
                    Console.WriteLine(a1 / a3);
                }
                else if (a2 == "?")
                {
                    break;
                }
            }
        }
    }
}