#include<stdio.h>

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

#include <stdio.h>

int main()
{
  /* 我的第一个 C 程序 */
  printf("Hello, World! \n");
  
  return 0;
}

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

#include <iostream>
int main()
{
    cout << "Hello, world";
}

main :: IO ()
main = putStrLn "Hello, world!"

main = putStrLn "Hello, World!"

print("Hello, World!")

print("Hello world")

print_string "Hello world!\n"

print_string "Hello world!\n";

<?php

echo "Hello World!";

?>

<?php
echo "Hello World";

?>

print "Hello World\n";

#!/usr/bin/perl

printf("Hello world\n");

print("Hello World")

print "hello world"

puts "hello world";

puts("Hello world!")

(display "Hello, World")

(display "Hello, World")