"Hello Ubuntu" in every programming language

**samjh** · July 10th, 2007

List made by pp., posted by LaRoza

================================================== ================================================== ===

I've just been inspired by a webpage with 193 examples of "Hello World!" programs.

I want to make something a just slightly more useful for the beginning programmer.

Write the most concise, but clearly readable program (call it helloubuntu) according to this specification:

Say: "Hi! What's your name? "
User enters name.
Say: "Hello, (username)! Welcome to Ubuntu!"

You can also use a simple GUI, like a dialog box, to ask the question, input name, etc. Just make sure the code is elegant and easy-to-understand.

You can use programming languages, markup languages, shell scripts, or even SQL statements.

Try not to hog too many languages. Give other posters a fair go at posting their example too. If you are posting an alternative version of code for a language that has already been posted, mention that it is an alternative version.

I'll start off:

Ada (using normal fixed-length string)

Code:

with Ada.Text_IO;

use Ada.Text_IO;

procedure helloubuntu is
	username : String(1..30);
	lastchar : Integer;
begin
	Put_Line("Hi!  What's your name?");
	Get_Line(username, lastchar);
	Put_Line("Hello, " & username(1..lastchar) & "!  Welcome to Ubuntu!");
end helloubuntu;

Ada (using the 2005 standard's unbounded-string)

Code:

with Ada.Text_IO, Ada.Text_IO.Unbounded_IO, Ada.Strings.Unbounded;

use Ada.Text_IO, Ada.Text_IO.Unbounded_IO, Ada.Strings.Unbounded;

procedure helloubuntu is
	username : Unbounded_String;
begin
	Put("Hi!  What's your name? ");
	Get_Line(username);
	Put_Line("Hello, " & username & "!  Welcome to Ubuntu!");
end helloubuntu;

Can we beat 193?

**desijays** · July 10th, 2007

BASH

Code:

echo -n "Hi whats your name? "
read name
echo "Hello $name. Welcome to Ubuntu"

**Note360** · July 10th, 2007

C

runningwithscissors came up with a better one. So here it is.

Code:

#include <stdio.h>

int main()
{
        char name[64];
        printf("Hi! What's your name? ");
        scanf("%s", &name);
        printf("Hello, %s! Welcome to Ubuntu (GNU)/Linux!\n", &name);

        return 0;
}

That is my really bad C one. Please criticize me via PM if you feel the need.

**bulldog060** · July 10th, 2007

Perl

Code:

Code:

#!/usr/bin/perl

use strict;

print "Hi, What is your name? ";
chomp( my $name = <STDIN> );
$name = ucfirst(lc($name)); # make "name" -> "Name"
print "Hello $name, Welcome to Ubuntu!\n";

Result:

Code:

[{bulldog}~]$./name.pl
Hi, What is your name? bULlDoG
Hello Bulldog, Welcome to Ubuntu!
[{bulldog}~]$

* Side note http://www.99-bottles-of-beer.net/ has examples of `99 Bottle of Beer' in every language that I can think of ( and alot that I couldn't ) ... Gives beginners some experience with conditionals and loops as well

**Wybiral** · July 10th, 2007

NASM Assembly (i386)

It could be cleaner and more optimized, I was trying to make it easy to follow.

The command to assemble & link is at the top.

Code:

; nasm helloubuntu.asm -f elf && ld helloubuntu.o -o helloubuntu

section .bss
    name resb 512

segment .text 
    ; Constant data:
    intro      db   "Hi! What's you're name? "
    sz_intro   equ  $-intro
    outro1     db   "Hello "
    sz_outro1  equ  $-outro1
    outro2     db   "! Welcome to Ubuntu!", 10
    sz_outro2  equ  $-outro2
    global _start

; Console in system call
console_in:
    mov eax, 3
    mov ebx, 0
    int 0x80
ret

; Console out system call
console_out:
    mov eax, 4
    mov ebx, 1
    int 0x80
ret

; Find first newline in input
get_len:
    mov edx, 0
    get_len_loop:
        inc edx
        cmp byte [name+edx], 10
    jne get_len_loop
ret

; Start, equivalent to C's "main"
_start:
    mov ecx, intro
    mov edx, sz_intro
    call console_out

    mov ecx, name
    mov edx, 512
    call console_in

    mov ecx, outro1
    mov edx, sz_outro1
    call console_out

    mov ecx, name
    call get_len
    call console_out

    mov ecx, outro2
    mov edx, sz_outro2
    call console_out

    ; System exit call
    mov eax, 1
    int 0x80

**runningwithscissors** · July 10th, 2007

Python

Code:

#!/usr/bin/env python
print "Hello, " + raw_input("Hi! What's your name? ") + "! Welcome to Ubuntu!"

**Pazin~** · July 10th, 2007

Improvements are welcome

I'm a beginner java programmer.

JAVA

Code:

import java.io.*;

public class HelloUbuntu {
	
	public static void main(String[] args){
		
		System.out.println("Hi! What's your name? \n");

		BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

		String userName = null;

		try{
			userName = reader.readLine();
		}
		catch( IOException e ){
			System.out.println("Ops! A problem!");
		}

		System.out.println("Hello, "+userName+" ! Welcome to Ubuntu!");

	}
}

**moma** · July 10th, 2007

Pike

The Pike programming language: http://en.wikipedia.org/wiki/Pike_%2...ng_language%29

First, install Pike interpreter
$ apt-cache search pike
$ sudo apt-get install pike7.6

Code:

#!/usr/bin/env pike

// Hello from a Pike program 

void say_this(string|void msg)
{
    if (!msg)
        write("Hello\n");
    else
        write(String.capitalize(msg) + "\n");
}

int main(int argc, array(string) argv)
{
    string s = "hello" " " "ubuntu!"; 

    mixed result = catch  {
        say_this(s);
    };

    // result will be != NULL string object if an exception was thrown.
    if(result == 0)
        write("Ok.\n");
    else
        write("There was an error: " + result + "\n");

    return 0;
}

Save the code to "hello-ubuntu.pike" file.

Make it executable
$ chmod +x hello-ubuntu.pike

Run it
$ ./hello-ubuntu.pike
--------------------------------------------------------

EDIT: If you want ask user's name, then write

Code:

   string name = Stdio.Readline()->read("Your name please:");

**max.diems** · July 10th, 2007

C++

Version 1: Do not write results to file

Code:

#include <cstdio>
#include <cstdlib>
#include <iostream>

using namespace std;

string username = "";

int main(int argc, char *argv[]);

int main(int argc, char *argv[]){
    cout << "Hi! What's your name? ";
    cin >> username;
    cout << "Hello, " << username << "! Welcome to Ubuntu!\n";
    return 0;
}

Version 2: Write results to file

Code:

 #include <cstdio>
#include <cstdlib>
#include <fstream>
#include <iostream>

using namespace std;

string username = "";

int main(int argc, char argv[]);

int main(int argc, char *argv[]){
    cout << "Hi! What's your name? ";
    cin >> username;
    cout << "Hello, " << username << "! Welcome to Ubuntu!\n";
    ofstream userlist;
    userlist.open ("userlist", ios::app);
    userlist << username << "\n";
    userlist.close();
    return 0;
}

The second version keeps a log of users, one name per line.

**maddog39** · July 10th, 2007

PHP

Code:

#!/usr/bin/php

<?php
echo "Hi! Whats your name? ";
$name = ucfirst(trim(fgets(STDIN)));
echo "Hello, ".$name."! Welcome to ubuntu!\n";
?>

You need the php5-cli package to run this.

Thread: "Hello Ubuntu" in every programming language

Thread Tools

Display

"Hello Ubuntu" in every programming language

Re: "Hello Ubuntu" in every programming language

Re: "Hello Ubuntu" in every programming language

Re: "Hello Ubuntu" in every programming language

Re: "Hello Ubuntu" in every programming language

Re: "Hello Ubuntu" in every programming language

Re: "Hello Ubuntu" in every programming language

Re: "Hello Ubuntu" in every programming language

Re: "Hello Ubuntu" in every programming language

Re: "Hello Ubuntu" in every programming language

Bookmarks

Bookmarks

Posting Permissions