“

◆中学・高校レベル（High School/Jr. High）

 10 PRINT "HELLO WORLD"
 20 END

　　　　　＊　　　　　＊　　　　　＊

◆大学１年生（First year in College）

 program Hello(input, output)
 begin
 writeln('Hello World')
 end.

　　　　　＊　　　　　＊　　　　　＊

◆なりたてハッカー（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;

　　　　　＊　　　　　＊　　　　　＊

◆だいぶ慣れてきたハッカー（Experienced Hacker）

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

　　　　　＊　　　　　＊　　　　　＊

◆年季の入ったハッカー（Seasoned Hacker）

 % cc -o a.out ~/src/misc/hw/hw.c
 % a.out
 Hello, world.

　　　　　＊　　　　　＊　　　　　＊

◆カリスマハッカー（Guru Hacker）

 % cat
 Hello, world.
”
maclalala2 - 「Hello World!」のコーディング方法はいくつある？ (via nagas)

(Source: tape)

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