Codeplague

<script type="text/javascript">
  alert('Hello World!');
</script>

<?php
  echo "Hello World!";
?>

public class HelloWorld {
  public static void main(String[] args) {
    System.out.println("Hello World!");
  }
}

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