A Coding Challenge - Write An Absolutely USELESS Program

[Ebenol]

I win. Find a use for this code and you will recieve absolutely nothing.

#include <iostream.h>
int main()
{	
	for (int i=0;i>1337;i++){
	__asm{
		nop
	}
    }
	return 0;
}

 

[Silent Kane]

__declspec(naked) means the the compiler adds absolutely nothing to the function so

int __declspec(naked) Blah(){
	_asm{
		xor eax, eax [COLOR=Green]//return 0[/COLOR]
		retn
	}
}

would turn out as

xor eax, eax
retn

after compiling while not using __declspec(naked) would make the compiler add some stuff like stack pointer saving (prolog, epilog) and some junk.

Here's a link with more informations http://msdn.microsoft.com/library/d...vclang/html/_pluslang_the_naked_attribute.asp

 

[we11er]

A very rudimentary C# function for determining whether a port is open. Just creates a TCP connection to the host and checks whether it was sucessful. Obivously most firewalls will detect a port scan using this method, but it works pretty well anyway.

Then again, SP2 has all sorts of things to slow down outgoing TCP connections which causes problems too...

private bool PortExists(IPAddress ip, int port)
{
    try
    {
        TcpClient client = new TcpClient( ip.ToString(), port );

        if ( client.Connected )
        {
            client.Close();
            return true;
        }
        else
            return false;
    }
    catch ( System.Exception )
    {
        return false;
    }
}