#include <stdio.h>

int main()
{
   /* Day la chuong trinh C dau tien */
   printf("Hello, World! \n");
   
   return 0;
}

#include <stdio.h>

int main(void) {
  printf("Hello World\n");
  return 0;
}

#include <iostream>
using namespace std;
int main(){
    cout << "Hello, world\n";
    return 0;
}

#include <iostream>
using namespace std;

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

void main()
{
    writef("Hello, World!");
}

import std.stdio;

void main()
{
    writef("Hello, World!");
}

main = putStrLn "Hello World"

main2 = do putStr "Hello "
           putStrLn "World2"

main = putStrLn "Hello World"

main2 = do putStr "Hello "
           putStrLn "World2"

 print("Hello World")

print("Hello, world!")

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

<?php
echo "Hello world";
?>

#!/usr/bin/perl

print "hello world";

print "hello World"

print("Hello world")
x=1

print("Hello world")

print 'Hello World!'

puts 'hello, world'

(display "Hello, World!")

(display "Hello, World!")