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;

class Program
{
  public static void Main(string[] args)
  {
    while(true)
    {
      string[] read = Console.ReadLine().Split(' ');
      int a = int.Parse(read[0]);
      char op = char.Parse(read[1]);
      int b = int.Parse(read[2]);
      if(op == '?') break;
      switch(op){
        case '+':
        Console.WriteLine(a + b);
        break;
        case '-':
        Console.WriteLine(a - b);
        break;
        case '*':
        Console.WriteLine(a * b);
        break;
        case '/':
        Console.WriteLine(a / b);
        break;
        default:
        break;
      }
    }
  }
}