#include <stdio.h>
void main() {

printf("hello world");
}

#include <stdio.h>
void main() {

printf("hello world");
}

#include <iostream>
using namespace std;

// main() is where program execution begins.
int main() {
   cout << "Hello World"; // prints Hello World
   return 0;
}

#include <iostream>

int main(){
    std::cout << "Hello world" << std::endl;
return 0;
}

main = putStrLn "Hello, world!"

main = putStrLn "Hello, world!"

print("Hello World!")

print("Hello world");

print_string "Hello, world"

print_string "Hello, world"

<?
print "Hello world!";
?>

<?php
echo "hello world";

printf STDOUT "Hello World!\n";
printf STDOUT chr(0)

printf STDOUT "Hello World!\n";
printf STDOUT chr(0)

print('Hello World')

print('hello world')

print "Hello World"

puts "Hello World!"

(display "Hello, World!")

(define main "Hello, world!")
(display main)