L'Evolution d un programmeur

Le but de la manipulation est d'ecrire un programme qui affichera "HELLO WORLD" a l'ecran.

- Terminale

     10 PRINT "HELLO WORLD"
     20 END

- DUT 1ere annee

     program HELLO(input, output)
     begin
       writeln('HELLO WORLD')
     end.

- DUT 2eme annee

     (defun HELLO
     (print
     (cons HELLO (list 'WORLD))))

- Fraichement sorti de l'ecole

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

- Professionnel tres experimente

     #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::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);
      }

- Administrateur Systeme

     #include <stdio.h>
     main()
     {
       char *tmp;
       int i=0;
       /* on y va bourin */
       tmp=(char *)malloc(1024*sizeof(char)); 
       while (tmp[i]="HELLO WORLD"[i++]);
       /* Ooopps y'a une infusion ! */
       i=(int)tmp[8];
       tmp[8]=tmp[9];
       tmp[9]=(char)i;
       printf("%s\n",tmp);
     }

- Apprenti 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;

- Hacker experimente

     #include <stdio.h>
     #define S "HELLO, WORLD\n"
     main(){exit(printf(S) == strlen(S) ? 0 : 1);}

- Hacker tres experimente

     cc -o a.out ~/src/misc/bv/bv.c
     % a.out

- Gourou des Hackers

     % cat
     HELLO, WORLD.
     ^D

- Directeur junior

     10 PRINT "HELLO WORLD"
     20 END

- Directeur

     mail -s "HELLO, WORLD." bob@b12
     Henri, pourrais-tu m'ecrire un programme qui ecrit "HELLO, 
     WORLD." A l'ecran?
     J'en ai besoin pour demain.
     ^D

- Directeur senior

     % zmail Jean
     J'ai besoin d'un programme "HELLO, WORLD." Pour cette apres-midi.

- President Directeur General

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