Antes de la escuela:
10 PRINT “HELLO WORLD”
20 END
Primer año en la batiz:
program Hello(input, output)
begin
writeln(‘Hello World’)
end.
Segundo año en la batiz:
(defun hello
(print
(cons ‘Hello (list ‘World))))
Recién egresado:
#include
void main(void)
{
char *message[] = {“Hello “, “World”};
int i;
for(i = 0; i < 2; ++i)
printf(“%s”, message[i]);
printf(“\n”);
}
Con experiencia:
#include
#include
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 << s.ptr);
}
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 << str << endl;
return(0);
}
Administrador de Sistemas
#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);
}
Hacker recién iniciado:
#!/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;
Hacker Experimentado:
#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.
Gurú:
% cat
Hello, world.
Nuestro administrador de sistemas (el recomendado)
10 PRINT “HELLO WORLD”
20 END
Lider de proyecto
mail -s “Hello, world.” bob@b12
Bob, could you please write me a program that prints “Hello, world.”?
I need it by tomorrow.
^D
Gerente de Sistemas:
% zmail jim
I need a “Hello, world.” program by this afternoon.
Experto en venta de tecnología:
% letter
letter: Command not found.
% mail
To: ^X ^F ^C
% help mail
help: Command not found.
% damn!
!: Event unrecognized
% logout
Investigador Científico:
PROGRAM HELLO
PRINT *, ‘Hello World’
END
Investigador científico de la vieja escuela:
WRITE (6, 100)
100 FORMAT (1H ,11HHELLO WORLD)
CALL EXIT
END