10 ? 'Hello World!\n';

##</code><code>##

 use cout;
 print << 'Hello World!\n';

##</code><code>##

 query::statement->execute('SELECT "Hello World!\n"');

##</code><code>##

 procedure perl is begin(print 'Hello World!\n')

##</code><code>##

 <?perl <print>'Hello World!\n'</print>; ?> 

##</code><code>##

 use LC0.ascii /Hello, world!/;
 movl $LC0, (%esp);

##</code><code>##

 print *, "Hello World!",
       e\nd