Empty program

In this task, the goal is to create the simplest possible program that is still considered "correct."

Empty program
You are encouraged to solve this task according to the task description, using any language you may know.

C

Compiler: GCC 4.0.3

int main ( void ) {
  return 0;
}

C++

Compiler: GCC 4.0.3

int main ( void ) {
  return 0;
}

Perl

Interpreter: Perl 5.8.8

#!/usr/bin/perl

UNIX Shell

Interpreter: Debian Almquist SHell

#!/bin/sh

Interpreter: Bourne Again SHell

#!/bin/bash