#include <stdio.h>

int main() {
  printf("Hello World!");
  return 0;
}

#include <stdio.h>

int main() {
  printf("Hello World!");
  return 0;
}

#include <iostream>
using namespace std;

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

#include <iostream>
using namespace std;

int main ()
{
  cout <<"Hello, World";// 输出 “Hello，World！”
  return 0;
}

module Main
where
main=
    putStrLn "Hello World!"

module Main
where
main = 
    putStrLn "Hello World!"

print("Hello World!")

print("Hello, world!")

print_endline "Hello World!"

<?php
echo "hello world";
?>

<?php

echo "hello world";

print "Hello World\n";

$variable = "Hello World";
print ("$variable");

print('Hello World')

print("Hello world")

puts "Hello World"

puts "hello, world"

(display "Hello, world!")

(define x "hello world")
(display x)