functionname(void) or functionname(*void)

funnyguy · Post by **funnyguy** » Tue Apr 21, 2009 5:33 am

When writing a function for a thread which one is correct? functionname(void) or functionname(*void)?

Post by **idle** » Tue Apr 21, 2009 6:04 am

just use void.i unless you intend to pass in a var to initialize it

Trond · Post by **Trond** » Tue Apr 21, 2009 9:52 am

Both are correct and do EXACTLY the same unless you used Define to change the default type.

Hroudtwolf · Post by **Hroudtwolf** » Tue Apr 21, 2009 11:19 am

*VOID is correctly, in my opinion.

Windows SDK:

Code: Select all

DWORD WINAPI ThreadProc(
  LPVOID lpParameter
);

LPVOID <-- Long pointer

This means it can be used to point to different types of (data-)objects.
But an integer argument is correct, as well. 'Cause integers has the same size than pointers.

Regards

Wolf

Mistrel · Post by **Mistrel** » Wed Apr 22, 2009 8:19 am

"void" isn't the same as "*void". "void" suggests that there are no parameters where "*void" is a void pointer (a pointer of no defined type).

*void in PureBasic would be the same as *Var.i (the default type in PureBasic is integer).

Trond · Post by **Trond** » Wed Apr 22, 2009 2:00 pm

"void" isn't the same as "*void".

They generate the same assembly code (except for the name), so they are functionally the same.