C programs

Hello World !
How the way people code "Hello World" varies depending on their age and job:
High School/Jr.High
10 PRINT "HELLO WORLD"
20 END


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


Senior year in College
(defun hello
(print
(cons 'Hello (list 'World))))


New professional
#include

void main(void)
{
char *message[] = {"Hello ", "World"};
int i;
for(i = 0; i < 2; ++i)
printf("%s", message[i]);
printf("\n");
}


Seasoned professional
#include
#include
class string
{
private:
int size;
char *ptr;
public:
string() : size(0), ptr(new char('\')) {}
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);
}


System Administrator
#include
#include
main()
{
char *tmp;
int i=0;
/* on y va bourin */
tmp=(char *)malloc(1024*sizeof(char));
while (tmp[i]="Hello Wolrd"[i++]);
/* Ooopps y'a une infusion ! */
i=(int)tmp[8];
tmp[8]=tmp[9];
tmp[9]=(char)i;
printf("%s\n",tmp);
}

Apprentice 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
#include
#define S "Hello, World\n"
main(){exit(printf(S) == strlen(S) ? 0 : 1);}


Seasoned Hacker
% cc -o a.out ~/src/misc/hw/hw.c
% a.out
Hello, world.


Guru Hacker
% cat
Hello, world.

New Manager (do you remember?)
10 PRINT "HELLO WORLD"
20 END


Middle Manager
mail -s "Hello, world." bob@b12
Bob, could you please write me a program that prints "Hello, world."?
I need it by tomorrow.
^D


Senior Manager
% zmail jim
I need a "Hello, world." program by this afternoon.

Chief Executive
% letter
letter: Command not found.
% mail
To: ^X ^F ^C
% help mail
help: Command not found.
% damn!
!: Event unrecognized
% logout

Research Scientist
PROGRAM HELLO
PRINT *, 'Hello World'
END

Older research Scientist
WRITE (6, 100)
100 FORMAT (1H ,11HHELLO WORLD)
CALL EXIT
END