hello world

Hello World — By different types of programmers

# source: https://www.smart-jokes.org/programmer-evolution.html

High School / Junior 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 <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);
 }
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>
#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
Guru Hacker
% cat
Hello, world.
^D
Junior Manager
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//This is a simple Hello World program.

public class hello world {
	public static void main(Strin[] args) {
     	System.out.println("Hello World"); 
    }
}Yes.# simple python Hello World program:
print('hello world')

# or, more exclusive:
def say_hello_to_the_world():
	print('hello world')

def main():
	say_hello_to_the_world()

main()//This is a simple Hello World program.

public class hello world {
	public static void main(String[] args) {
     	System.out.println("Hello World"); 
    }
}