How to Install the file downloaded from this site (DNS Lookup Code) in Win Vista

Question

Hi-I don't have any experience installing code, although I am an avid downloader of every other program file on the net.  When I open the doc w/ the code using "getdiz" (the .cs file), it shows what is in the file, but the download doesn't automatically load the script.  I've looked all over the net for the answer on how to install but it's the "hide the ball" issue (in other words do I really need a gazillion years of programming to install a simple script)?

Any help someone can give this layperson would be greatly appreciated.  I am willing to do what it takes, even if the answer is complex.  Thank you in advance-KJ

Answer 1

Here's a rather crude way to do it:

using System;

class Test

{

   static void Main()

   {

       string s = "Shubham";

       int length = 0;

       try

       {

          char c;

          while(true)

          {

             c = s[length];

             length++;

          }

       }

       catch(IndexOutOfRangeException)

       {

       }

       Console.WriteLine("The length of '{0}' is {1}", s, length);

       Console.ReadKey();

   }

}

A more elegant way would be to use pointers but, as you wouldn't even be asking the question if you knew about these, then I won't elaborate further.

Answer 2

Sure, here it is:

using System;

class Test

{

   unsafe static void Main()

   {

       string s = "Shubham";

       int length = 0;

       fixed(char* ps = s)

       {

          char* pc = ps;

          while(*pc++ != '\0') length++;

       } 

       Console.WriteLine("The length of '{0}' is {1}", s, length);

       Console.ReadKey();

   }

}

You'll need to compile with the /unsafe switch.

This works because, although you're not normally aware of it, all strings in .NET are stored in memory with a terminating null character '\0'. So, all you need to do is to keep incrementing the pointer until the null character is reached.

Notice though that, if the string actually contains a null character, then this approach will give an answer which is too small. The 'crude' method doesn't suffer from this problem.

Answer 3

Hi Vulpes, Give me the second way to get the length of string using pointer.