You have to be pretty nerdy to understand this... and if you do understand this and think you aren't a geek, you are living in denial!
The way people code "Hello World" varies depending on their age and job (My favorites are the managers!!):
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 <stdio.h>
void main(void)
{
char *message[] = {"Hello ", "World"};
int i;
for(i = 0; i < 2; ++i)
printf("%s", message[i]);
printf("\n");
}
Seasoned professional
#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
string &operator=(const char *);
};
ostream &operator
return(stream
}
string &string::operator=(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
return(0);
}
System Administrator
#include <stdio.h>
#include <stdlib.h>
main()
{
char *tmp;
int i=0;
/* We'll get there */
tmp=(char *)malloc(1024*sizeof(char));
while (tmp[i]="Hello Wolrd"[i++]);
/* Ooopps there is an 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 <stdio.h>
#include <string.h>
#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