Matlab compiler: another problem with a simple file

Hi,
I read many posts about these problems, but i did't find a solution for
the mine.

I want to compile this simple file:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function doppio=perdue(n)
doppio=n*2;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

I used
 

and I got a perdue.c file.
Then I tried to use
 

but I got errors, using LCC or Borland compiler.
These are the error messages:

 =================LCC====================
====================== 
main.obj .text: undefined reference to '_WinMain@16'

MBUILD.BAT: Error: Link of 'perdue.exe' failed.

??? Error using ==> mbuild
Unable to complete successfully


 =================BORLAND================
===================== 
Turbo Incremental Link 5.00 Copyright (c) 1997, 2000 Borland
Error: Unresolved external '_main' referenced from
C:\PROGRAMMI\BORLAND\BCC55\LIB\C0X32.OBJ

MBUILD.BAT: Error: Link of 'perdue.exe' failed.

??? Error using ==> mbuild
Unable to complete successfully

 ========================================
=====================

What can I do?

Thanks in advance,
Paolo Bocchini

--
Paolo Bocchini - Civil Engineer
Structural mechanics PhD student
Web: www.distart.ing.unibo.it
name.surname at mail.ing.unibo.it