1def hello_world():
2    print("Hello, world!")

1#include <stdio.h>
2
3int main() {
4    printf("Hello, world!\n");
5    return 0;
6}

1#include <iostream>
2
3int main() {
4    std::cout << "Hello, world!" << std::endl;
5    return 0;
6}

1package main
2
3import "fmt"
4
5func main() {
6    fmt.Println("Hello, world!")
7}

1console.log("Hello, world!");

1fn main() {
2    println!("Hello, world!");
3}