int main(void)
{
   printf("hello world!");
   return 0;
}

int main(void)
{
   printf("hello world!");
   return 0;
}

#include <iostream>

using namespace std;

int main()
{
   cout << "Hello World" << endl; 
   
   return 0;
}

#include <iostream>
 
int main()
{
  std::cout << "Hello World!" << std::endl;
  return 0;
}

int main()
{
printf("hello world!");
return 0;
}

main :: IO ()
main = putStrLn "Hello World"

main = putStrLn "Hello, World!"

print("hello World")

print("Hello World")

print_endline "Hello, world!"

Printf.printf "Hello world!";;

<?php
echo"hello world";
?>

<?
    echo 'Hello, world!';
?>

my $hi = "Hello, world!";
print $hi."\n";

my $args = {
  a => "ab",
  b => "ba"
};

print "Hello World\n\n";
print $args{b};

print "hello world"

print("hello world")

puts 'Hello World'

puts "hello, world!"

(display "Hello, World\n")

(display "Hello World!")