new line and enter in url encoding

I know that space is %20 in url enconding, but how do you write a new line in url enconding?

\r\n won't work , lol , also how i can write an enter in url enconding?
i need to send some varibles to a C++ script via an GET method,lol

 

It's better to do a POST method. But if you have to use GET method, \n can be urlencoded as %0A

 

and enter?

 

You know that's a popular hack, right?

People add in their own newline and then their own scripts. Not sure it would work with C++ (it's usually used with PHP sites), but if you need special characters like that, either read the RFC about URLs, and if there is nothing for Enter, that should be a sign that you're going where there be dragons, and like lkraj said, use POST.

 

enter is a popular hack ? lol

 

newlines are, yes.

Esp since there are a few of them. carriage return, form feed, new line... "return".

SQL injections use it, for an example.

Anyway, read the rfc, where it says everything you can do.