Irrlicht Engine

Posted: **Fri Feb 04, 2011 11:39 pm**

Great that i <3 u...

Posted: **Sat Feb 05, 2011 11:27 am**

The funny part was supposed to be the mushrooms.... nevermind.
I guess i should have said that he is 14.

Posted: **Tue Feb 08, 2011 3:12 am**

Mushrooms are very good

Unfortunately, it's not season for shrooms.

This one is good

Posted: **Tue Feb 08, 2011 6:56 am**

Hello World? Need vacation

Posted: **Tue Feb 08, 2011 7:13 am**

Brainsaw, are you sure?

Posted: **Tue Feb 08, 2011 9:26 am**

Code: Select all

a: 
   goto a

I think it will get into an infinite loop.

Posted: **Tue Feb 08, 2011 11:46 am**

kazymjir wrote:Brainsaw, are you sure?

Just a wild guess

. It does, however, almost look as good as the "hello world" of Brainfuck

Posted: **Tue Feb 08, 2011 11:49 am**

This picture is very trickery.
All people is starting to analysis those hexadecimal ascii values, but...
look at printf function.
Is there something missing?

Posted: **Tue Feb 08, 2011 12:13 pm**

why would you need a separate format string when you already built one? Should work without any problems.

Posted: **Tue Feb 08, 2011 12:56 pm**

Ok, I will give you solution.
This code will output... an error.
Why? Because printf() is in stdio.h, which is not included in this code

Solutions of most problems are very easy, but human perception always looking for complex solutions, not seeing simple patterns.

Posted: **Tue Feb 08, 2011 4:10 pm**

No, that's an incomplete answer. The thing is that the output of this function was searched. It's also called _tmain, which will probably also not link without a proper main(). But you could still define the output of this function in case it's called (which would also require that it's properly linked before).

Posted: **Tue Feb 08, 2011 7:11 pm**

Put aside all the sophistry and it actually says "Hello World"

Code: Select all

#include <stdio.h>

int main()
{
  char* p=new char[12];*p=0x48;++p;*p=0x65;++p;*p=0x6c;
  ++p;*p=0x6c;++p;*p=0x6f;++p;*p=0x20;++p;*p=0x57;++p;
  *p=0x6f;++p;*p=0x72;++p;*p=0x6c;++p;*p=0x64;++p;
  *p=0x0;--p;--p;--p;--p;--p;--p;--p;--p;--p;--p;--p;

  printf(p);
  delete p;

  return 0;
}

Posted: **Wed Feb 09, 2011 2:36 am**

hybrid wrote:It's also called _tmain, which will probably also not link without a proper main().

_tmain is used in VC++. _t* functions is calling ANSI functions if _UNICODE isn't defined. If _UNICODE is defined, it's calling UNICODE version of that function.
So everything is ok, proper main will be called (main if ANSI, wmain if UNICODE).
But, there don't even must be main() function. Why?
Because, compiler is working always first. If compiler found error in code, it will not run linker.

So, output will be an error that printf() function is not found.
Linker will be not called, because of error found by compiler in code

Posted: **Wed Feb 09, 2011 7:18 am**

Here is my optimized version:

Code: Select all

  #include <stdio.h>

int main() {
  char *p=new char[13];
  *p++=0x48;*p++=0x65;*p++=0x6c;*p++=0x6c;*p++=0x6f;
	*p++=0x20;*p++=0x57;*p++=0x6f;*p++=0x72;*p++=0x6c;*p++=0x64;*p++=0x0A;*p=0;
  --p;--p;--p;--p;--p;--p;--p;--p;--p;--p;--p;--p;printf(p);return 0;
}

Posted: **Wed Feb 09, 2011 9:10 am**

Let's do more optimization!

Code: Select all

int main() {
	char *p=new char[13];
	*p++=0x48;*p++=0x65;*p++=0x6c;*p++=0x6c;*p++=0x6f;
	*p++=0x20;*p++=0x57;*p++=0x6f;*p++=0x72;*p++=0x6c;*p++=0x64;*p++=0x0A;*p=0;
	--p;--p;--p;--p;--p;--p;--p;--p;--p;--p;--p;--p;
	__asm__("\
		movl $4, %%eax\n\
		movl $0, %%ebx\n\
		push %0\n\
		pop %%ecx\n\
		movl $13,%%edx\n\
		int $0x80" : :"g"(p)); return 0;
}

Irrlicht Engine

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