超衫！不同人写的HelloWorld程序

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 <<( 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 );

}

System Administrator

#include <stdio.h>

#include <stdlib.h>

main ()

{

   char * tmp ;

   int i = 0 ;

   tmp =( char *) malloc ( 1024 * sizeof ( char ));

  while ( tmp [ i ]= "Hello Wolrd" [ i ++]);

   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