Introduction to the xor operator of c

 int a = 5;
 int b = 30;
 Console.WriteLine(a^b);
 Console.ReadKey();  
 

That's because the base 2 of 5 is 2
0000 0101
The base 2 of 30 is zero
0001 1110

And the difference or algorithm is, you compare each bit of two base two Numbers, if they're the same, they're 0, if they're different, they're 1. Therefore, it should be listed as follows:

0000 0101
0001 1110
--------------
0001 1011

So you get 0001, 1011. And this base two is going to be 27.