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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text;
  5.  
  6. namespace ConsoleApplication1
  7. {
  8.     class Program
  9.     {
  10.         static void Main(string[] args)
  11.         {
  12.             for (; ; )
  13.             {
  14.                 var cab = Console.ReadLine().Split(null);
  15.                 char c = char.Parse(cab[0]);
  16.                 Int32 a = Int32.Parse(cab[1]);
  17.                 Int32 b = Int32.Parse(cab[2]);
  18.  
  19.  
  20.  
  21.                 switch (c)
  22.                 {
  23.                     case '+': Console.WriteLine(a + b); break;
  24.                     case '-': Console.WriteLine(a - b); break;
  25.                     case '*': Console.WriteLine(a * b); break;
  26.                     case '/': Console.WriteLine(a / b); break;
  27.                     case '%': Console.WriteLine(a % b); break;
  28.                 }
  29.             }
  30.                 Console.ReadKey();
  31.  
  32.         }
  33.     }
  34. }
  35.  
Runtime error #stdin #stdout #stderr 0.01s 32744KB
comments (?)
stdin 
+ 7 9
- 0 4
* 5 6
/ 8 3
% 5 2
+ 7 9
- 0 4
* 5 6
/ 8 3
% 5 2
stdout 
16
-4
30
2
1
16
-4
30
2
1
stderr 
Unhandled Exception:
System.NullReferenceException: Object reference not set to an instance of an object
  at ConsoleApplication1.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object
  at ConsoleApplication1.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0
https://ideone.com/loTtjs
language:
C# (gmcs 5.20.1)
created:
7 years ago
visibility:
public

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