The evolution of the famous HELLO WORLD in the programer's life

kayos

Secondary School
10 PRINT "HELLO WORLD"
20 END


First year in the university
program Hello(input, output)
begin
writeln('Hello World')
end.


Last year in the university
(defun hello
(print
(cons 'Hello (list 'World))))


Beginner professional programer
#include <stdio.h>
void main(void)
{ char *message[] = {"Hello ", "World"};
int i;
for(i = 0; i< 2; ++i)
printf("%s", message);
printf("\n");
}


Professional programer
#include <iostream.h>
#include <string.h>

class string
{
private:
int size;
char *ptr;

public:
string() : size(0), ptr(new char('\0')) {}

string(const string &s) : size(s.size)
{
ptr = new char[size + 1];
strcpy(ptr, s.ptr);
}

~string()
{
delete [] ptr;
}

friend ostream &operator <<(ostream &, const string &);
string &operator=(const char *);
};

ostream &operator<<(ostream &stream, const string &s)
{
return(stream << s.ptr);
}

string &string: perator=(const char *chrs)
{
if (this != &chrs)
{
delete [] ptr;
size = strlen(chrs);
ptr = new char[size + 1];
strcpy(ptr, chrs);
}
return(*this);
}

int main()
{
string str;

str = "Hello World";
cout << str << endl;

return(0);
}

Very very professional programer

[
uuid(2573F8F4-CFEE-101A-9A9F-00AA00342820)
]
library LHello
{
// bring in the master library
importlib("actimp.tlb");
importlib("actexp.tlb");

// bring in my interfaces
#include "pshlo.idl"

[
uuid(2573F8F5-CFEE-101A-9A9F-00AA00342820)
]
cotype THello
{
interface IHello;
interface IPersistFile;
};
};

[
exe,
uuid(2573F890-CFEE-101A-9A9F-00AA00342820)
]
module CHelloLib
{

// some code related header files
importheader(


Beginner hacker
#!/usr/local/bin/perl
$msg="Hello, world.\n";
if ($#ARGV = 0) {
while(defined($arg=shift(@ARGV))) {
$outfilename = $arg;
open(FILE, "" . $outfilename) == die "Can't write $arg: =$!\n";
print (FILE $msg);
close(FILE) == die "Can't close $arg: $!\n";
}
} else {
print ($msg);
}
1;


Experienced hacker
#include


More experienced hacker
% cc -o a.out ~/src/misc/hw/hw.c
% a.out


Profession hacker
% cat
Hello, world.
^D


Newly appointed manager
10 PRINT "HELLO WORLD"
20 END


Middle-level manager
mail -s "Hello, world." bob@b12
Bob, can you write a program for me until tomorrow,
that display "Hello word" on the screen?
Thanks!
^D


Director
% zmail jim
I need a "Hello Word" program today afternoon.

CEO

% letter
letter: Command not found.

% mail To: ^X
^F ^C

% help mail
help: Command not found.

% ****!
!: Event unrecognized

% logout

Kali

haha excellent.. especially professioinal hacker
ive no idea what that last year in universtity one is tho.. quite worrying.. although that said nobody does pascal (the first year one) anymore either... its probably cobol or something?

ever see the hundred green bottles program collection?


[This message has been edited by Kali (edited 06-03-2001).]

Shiminay

The last year of Uni one is LISP (an AI language).

I forgot Pascal for a while there and couldn't figure out what the hell the first year one was.

---

All the best,

Dav
@B^)

<font face="Verdana, Arial" size="2">Prepare yourself - The Beefy King stirs from his slumber...</font>

Snaggle

Surely you have the good courtesy to share with us what particular dialect of Lisp it is

satchmo

Looks pretty much like bog-standard Lisp to me. Dialect? Buh?

Snaggle

There's no such thing as bog standard Lisp, the varieties of Lisps go into double digits, there's Common Lisp (which used to be the common standard), there's Scheme which a lot of free programs use as a scripting language, there'e elisp used by emacs, rep used by sawfish, there's the autolisps used by autocad, euro lisp developed by europeans (big surprise), I think Intercal had a dialect of lisp, I can go on but basically they're all different dialects of Lisp with different semantics but only slightly different syntax

Shiminay

I'd take a guess at common Lisp - there's nothing major in that "hello world" anyway.

All those brackets used to wreck my head - I nearly always left one or 2 ou at the wrong place

---

All the best,

Dav
@B^)

<font face="Verdana, Arial" size="2">Prepare yourself - The Beefy King stirs from his slumber...</font>

Shiminay

heh - I guess I'm just weird that way

I used to play Blood in the class actually - I never worried too much about the specifics

---

All the best,

Dav
@B^)

<font face="Verdana, Arial" size="2">Prepare yourself - The Beefy King stirs from his slumber...</font>

[honey i] violated [the kids]

satchmo

yeah Common Lisp that's what I meant. I'd say you're about the only one who likes those brackets, they drive me nuts!

gimp, apparently

what happened to simple ole,
#include <iostream.h>
int main()
{
cout <<"Hello world\n";
return 0;
}
ya wouldnt make much of a very, very professional programmer if ya had to do all that krap

ps. is that Last year in university one functional programming? i didnt think they'd ever tell us what the point in functional programming was.


[This message has been edited by gimp, apparently (edited 07-03-2001).]

Snaggle

<font face="Verdana, Arial" size="2">Originally posted by gimp, apparently:

ps. is that Last year in university one functional programming?
</font>

No, we never did a functional programming class, although there was this one called Languages, Computability and Complexity in which they made us do a lot of waffly theory on proving programs and so on (and snuck in a functional language, ML). I picked a Scheme Interpretter for my final year project, cus it was an easy project to do and I could spend more time waffling to lecturers about it (and it paid off too)

<font face="Verdana, Arial" size="2">
i didnt think they'd ever tell us what the point in functional programming was.
</font>

Every functional language course I've seen has been very simplistic, make a function recurse, some trivial list manipulation, leaves everybody walking out wondering what's the point

Snaggle

Strange (BTW yeah you're right on the Common Lisp), I used to love those brackets, so much so that I wrote a Lisp (Scheme dialect) interpretter for my final year project in college. The trick to not missing brackets is to use an editor that highlights unmatched brackets, also helps if you use standard indenting

Void

Couldn't resist!
http://hosted.quake.ie/void/pics/helloworld.jpg
Unfortunately, my ingame scripting language can't do Hello World yet.