hello_world.c

#include<stdio.h>
#define p printf
#define n(X)
#define class struct{struct
#define HelloWorld
#define public int x;}out;}System;
#define static
#define void int
#define String int a,char*
#define println(X) x;p(" _   _      _ \
_                            _     _ _\n");{{
#define print(X) p("| | | | ___| | | _\
__   __      _____  _ __| | __| | |\n");
#define console System.out
#define log(X) x;p("| |_| |/ _ \\ | |/\
 _ \\  \\ \\ /\\ / / _ \\| '__| |/ _` | |\n");
#define echo p("|  _  |  __/ | | (_) |\
  \\ V  V / (_) | |  | | (_| |_|\n");n(
#define Main(X) i;
#define Console out
#define WriteLine(X) x;p("|_| |_|\\___\
|_|_|\\___/    \\_/\\_/ \\___/|_|  |_\
|\\__,_(_)\n\n");{

//---------------------------------------------------------------

// Java

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

//---------------------------------------------------------------

// Python

print("Hello world!")

//---------------------------------------------------------------

// JavaScript

console.log("Hello world!")

//---------------------------------------------------------------

// bash

echo "Hello world!"

//---------------------------------------------------------------

// Brainf***

++++++++++[>+>+++>++++>+++++++>++++++++>+++++++++>++
++++++++>+++++++++++>++++++++++++<<<<<<<<<-]>>>>+.>>>
>+..<.<++++++++.>>>+.<<+.<<<<++++.<++.>>>+++++++.>>>.+++.
<+++++++.--------.<<<<<+.<+++.---.

//---------------------------------------------------------------

// C#

namespace HelloWorld {
	class Program {                                               /*(*/)
		static void Main(string[] args) {
			System.Console.WriteLine("Hello world!");
		}
	}
}

//---------------------------------------------------------------