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[工作] For programmers: Hello World [复制链接]

萨米

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电梯直达

楼主

发表于 2009-12-8 10:47:41 |只看该作者 |倒序浏览 微信分享

http://www.gnu.org/fun/jokes/helloworld.html

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>

void main(void)
{
  char *message[] = {"Hello ", "World"};
  int i;
  for(i = 0; i < 2; ++i)
  printf("%s", message);
  printf("\n");
}

Seasoned professional

#include <iostream>
#include <string>
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>
#include <stdlib>
main()
{
  char *tmp;
  int i=0;
  /* on y va bourin */
  tmp=(char *)malloc(1024*sizeof(char));
  while (tmp="Hello Wolrd"[i++]);
  /* Ooopps y'a une 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>
#include <string>
#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