Hello World

Posted by 李晶 in on 2008年12月6日

Hello, World! 程序是一个在计算机屏幕上，只印出 "Hello, World!"（意为“世界，你好！”）这一行字串的计算机程序。像这样简单的程序，通常是计算机程序设计语言的初学者，在学习编写时的第一个程序。它还可以用来确定该语言的编译器、程序开发环境，以及运行环境是否已经安装妥当。
把印出 "Hello World" 作为第一个范例程序，现在已经成为编程语言学习的传统。该程序由 Brian Kernighan 和丹尼斯·里奇写的计算机程序设计教程《C语言程序设计》（The C Programming Language）而广泛流传；但这本书并不是 "hello, world" 的滥觞，虽然这是一个普遍存在的错误认知。
这范例程序最早出现于 1972 年，由贝尔实验室成员 Brian Kernighan 撰写的内部技术文件《Introduction to the Language B》之中。不久同作者于 1974 年所撰写的《Programming in C: A Tutorial》，也延用这个范例；而以本文件扩编改写的《C语言程序设计》也保留了这个範例程式。
"hello, world" 程序的标准打印内容必须满足“全小写，无惊叹号，逗点后需空一格”，不过流传至今，完全恪守传统的反而罕见。 ##CONTINUE##

例子：

ActionScript
trace("Hello, world!");

Ada
with TEXT_IO;

procedure HELLO is
begin
TEXT_IO.PUT_LINE ("Hello, world!");
end HELLO;

汇编语言

x86 CPU，GNU/Linux，NASM
section .data
msg db 'Hello, world!',0xA
len equ $-msg

section .text
global _start
_start:
mov edx,len
mov ecx,msg
mov ebx,1
mov eax,4
int 0x80

mov ebx,0
mov eax,1
int 0x80

x86 CPU、Windows、MASM32
.386
.model flat,stdcall
option casemap:none
;==========================================================
include windows.inc
include user32.inc
includelib user32.lib
include kernel32.inc
includelib kernel32.lib
;==========================================================
.data
szCaption db "A MessageBox!", 0
szText db "Hello, world!", 0
;==========================================================
.code
start:
invoke MessageBox, NULL, addr szText, addr szCaption, MB_OK
invoke ExitProcess, NULL
;==========================================================
end start

ASP
<% Response.Write("Hello, world!") %>
或者：
<% strHelloWorld = "Hello, world!" %>
<%= strHelloWorld %>
或者简单地写成：
<%= "Hello, world!" %>

AutoIt
MsgBox(1,'','Hello, world!')

AWK
BEGIN { print "Hello, world!" }

Bash (or sh)
echo 'Hello, world!'
或者：
printf 'Hello, world!\n'



BASIC
传统版 BASIC（例如 GWBASIC）：
10 PRINT "Hello, world!"
20 END
或在提示符输入：
? "Hello, world!"
现代版 BASIC（例如 Quick BASIC）：
PRINT "Hello, world!"
以下的语句, 在 Quick BASIC 中同样有效：
? "Hello,world!"

BCPL
GET "LIBHDR"

LET START () BE
$(
WRITES ("Hello, world!*N")
$)

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

BlitzBasic
Print "Hello, world!"
WaitKey

BOO
print "Hello, world!"

C
#include <stdio.h>

int main(int argc, char* argv[])
{
printf("Hello, world!\n");
return 0;
}
或者：
#include <stdio.h>
int main(void)
{puts("Hello, world!");}

C++
#include <iostream>

int main()
{
std::cout << "Hello, world!" << std::endl;
return 0;
}
或者：
#include <iostream>
using namespace std;

int main()
{
cout << "Hello, world!" << endl;
return 0;
}

C++/CLI
int main()
{
System::Console::WriteLine("Hello, world!");
}

C# (C Sharp)
class HelloWorldApp
{
static void Main()
{
System.Console.WriteLine("Hello, world!");
}
}
或者（仅用于Microsoft Windows）
class HelloWorldApp
{
[DllImport("user32.dll")]
static extern MessageBox(string title, string message);
public static void Main()
{
MessageBox(null, "Hello, world!");
}
}
或者（使用附加的Windows Forms）
using System.Windows.Forms;
class HelloWorldApp
{
public static void Main()
{
MessageBox.Show("Hello, world!");
}
}

COBOL
IDENTIFICATION DIVISION.
PROGRAM-ID. HELLO-WORLD.

ENVIRONMENT DIVISION.

DATA DIVISION.

PROCEDURE DIVISION.
DISPLAY "Hello, world!".
STOP RUN.

Common Lisp
(format t "Hello world!~%")

DOS批处理
@echo Hello, world!
对于MS-DOS 3.0或更低版本：
echo off
cls
echo Hello, world!

Eiffel
class HELLO_WORLD

creation
make
feature
make is
local
io:BASIC_IO
do
!!io
io.put_string("%N Hello, world!")
end -- make
end -- class HELLO_WORLD

Erlang
-module(hello).
-export([hello_world/0]).

hello_world() -> io:fwrite("Hello, World!\n").

Forth
." Hello, world!" CR

Fortran
WRITE(*,10)
10 FORMAT('Hello, World!')
STOP
END

HTML
<!-- 直接輸出... -->

Hello World

<!-- 或者 -->

<html>
<head>
<title> Hello World </title>
</head>
<body>
Hello World
</body>
</html>

HQ9+
H

INTERCAL
PLEASE DO ,1 <- #13
DO ,1 SUB #1 <- #238
DO ,1 SUB #2 <- #112
DO ,1 SUB #3 <- #112
DO ,1 SUB #4 <- #0
DO ,1 SUB #5 <- #64
DO ,1 SUB #6 <- #238
DO ,1 SUB #7 <- #26
DO ,1 SUB #8 <- #248
DO ,1 SUB #9 <- #168
DO ,1 SUB #10 <- #24
DO ,1 SUB #11 <- #16
DO ,1 SUB #12 <- #158
DO ,1 SUB #13 <- #52
PLEASE READ OUT ,1
PLEASE GIVE UP

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

JSP
<%
out.print("Hello, world!");
%>

Lua
print "Hello, world!"

Metapost
beginfig(1);
draw (0,0)--(0,10);
draw (0,5)--(5,5);
draw (5,0)--(5,10);
draw (12,0)--(7,0)--(7,10)--(12,10);
draw (12,5)--(7,5);
draw (14,10)--(14,0)--(19,0);
draw (21,10)--(21,0)--(26,0);
draw (28,5)...(30.5,0)...(33,5)...(30.5,10)...cycle;
draw (38,10)--(39.25,0)--(40.5,10)--(41.75,0)--(43,10);
draw (45,5)...(47.5,0)...(50,5)...(47.5,10)...cycle;
draw (52,0)--(52,10);
draw (52,10)..(57,4)..(52,6.5);
draw (52,5)--(57,0);
draw (61,10)--(61,0)--(66,0);
draw (68,10)--(68,0)..(73,5)..cycle;
endfig;
end
它会帮你画出来……

MIXAL
TERM EQU 19 the MIX console device number
ORIG 1000 start address
START OUT MSG(TERM) output data at address MSG
HLT halt execution
MSG ALF "MIXAL"
ALF " HELL"
ALF "O WOR"
ALF "LD "
END START end of the program

Nuva
<..直接输出..>
Hello, world!

<..或者..>

<.
// 不带换行
? "Hello, world!"

// 或者

// 带换行
?? 'Hello, world!'
.>

OCaml
let main () =
print_endline "Hello world!";;

Pascal
program Hello;
begin
writeln('Hello, world!');
end.

Perl
#!/usr/local/bin/perl
print "Hello, world!\n";

PHP
<?php
echo 'Hello, world!';//通常使用這個, 比 print 少一個字元
print 'Hello, world!';
?>
或者
<?= "Hello World!"?>

Pike
#!/usr/local/bin/pike
int main()
{
write("Hello, world!\n");
return 0;
}

PL/I
Test: procedure options(main);
declare My_String char(20) varying initialize('Hello, world!');
put skip list(My_String);
end Test;

Prolog
goal
write("hello,world!").

Python

Python 3.0 之前
#!/usr/local/bin/python
print "Hello, world!"

Python 3.0 及之后
#!/usr/local/bin/python
print("Hello, world!")

REXX
say "Hello, world!"

Ruby
#!/usr/bin/ruby
print "Hello, world!\n"

Scheme
(display "Hello, world!")
(newline)

sed
（需要至少一行输入）
sed -ne '1s/.*/Hello, world!/p'

Seed7
$ include "seed7_05.s7i";

const proc: main is func
begin
writeln("Hello, world!");
end func;

Smalltalk
Transcript show: 'Hello, world!'

SNOBOL
OUTPUT = "Hello, world!"
END

SQL
CREATE TABLE MESSAGE (TEXT char(15));
INSERT INTO MESSAGE (TEXT) VALUES ('Hello, world!');
SELECT TEXT FROM MESSAGE;
DROP TABLE MESSAGE;

Tcl
#!/usr/local/bin/tcl
puts "Hello, world!"

TScript
? "Hello, world!"

Turing
put "Hello, world!"

UNIX-style shell
程序中的/bin/sh可改为您使用的shell
#!/bin/sh
echo 'Hello, world!'

Delphi
program HelloWorld;
uses
Dialogs;
begin
ShowMessage('Hello, World!');
end.

Nuva
<.
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK'])
.>

Visual Basic
MsgBox "Hello, world!"
'或者
Print "Hello, world!"

Visual FoxPro
? "Hello, world!"

X11
用一个程序
xmessage 'Hello, world!'
用C++和gtkmm 2
#include <iostream>
#include <gtkmm/main.h>
#include <gtkmm/button.h>
#include <gtkmm/window.h>
using namespace std;

class HelloWorld : public Gtk::Window
{
public:
HelloWorld();
virtual ~HelloWorld();
protected:
Gtk::Button m_button;
virtual void on_button_clicked();
};

HelloWorld::HelloWorld() : m_button("Hello, world!")
{
set_border_width(10);
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked));
add(m_button);
m_button.show();
}

HelloWorld::~HelloWorld() {}

void HelloWorld::on_button_clicked()
{
cout << "Hello, world!" << endl;
}

int main (int argc, char *argv[])
{
Gtk::Main kit(argc, argv);
HelloWorld helloworld;
Gtk::Main::run(helloworld);
}



Java
import java.awt.*;
import java.awt.event.*;

public class HelloFrame extends Frame
{
HelloFrame(String title)
{
super(title);
}
public void paint(Graphics g)
{
super.paint(g);
java.awt.Insets ins = this.getInsets();
g.drawString("Hello, World!", ins.left + 25, ins.top + 25);
}
public static void main(String args [])
{
HelloFrame fr = new HelloFrame("Hello");

fr.addWindowListener(
new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit( 0 );
}
}
);
fr.setResizable(true);
fr.setSize(500, 100);
fr.setVisible(true);
}
}

Java Applet
Java Applet用于HTML文件。
HTML代码:
<html>
<head>
<title>Hello World</title>
</head>
<body>
HelloWorld Program says:
<applet code="HelloWorld.class" width="600" height="100">
</applet>
</body>
</html>
Java代码:
import java.applet.*;
import java.awt.*;

public class HelloWorld extends Applet
{
public void paint(Graphics g)
{
g.drawString("Hello, world!", 100, 50);
}
}

JavaScript
JavaScript是一种脚本语言。最广泛用于HTML文件中，也可以用在其它宿主环境下，比如Microsoft® Windows® 脚本宿主 (WSH)和一些web服务环境。
用于HTML中：
alert("Hello World");
用于WSH中：
WScript.Echo("Hello World");

PostScript
PostScript是一种专门用来创建图像的语言，常用于打印机。
/font /Courier findfont 24 scalefont
font setfont
100 100 moveto
(Hello World!) show
showpage

XAML
<Page
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="XAMLSample.Page1"
>
<Button Click="HelloWorld" Name="Button1">Click Here</Button>
</Page>
using System;
using System.Windows;
using System.Windows.Controls;

namespace XAMLSample
{
public partial class Page1 : Page
{
void HelloWorld(object sender, RoutedEventArgs e)
{
MessageBox.Show("Hello, world!");
}
}
}



链接：
hello world程序的集合
——————————————转载自维基百科————————————————————

This entry was posted on 2008年12月6日 at 上午5:47 and is filed under . You can follow any responses to this entry through the RSS 2.0. You can leave a response.

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