“Hello, World!”程序是一个只在计算机屏幕上打印出“Hello, World!”(英语,意为“世界,你好!”)字串的计算机程序。该程序通常是计算机程序设计语言的初学者所要学习编写的第一个程序。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已经正确安装。 ypx`!2Q$
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 <}F(G-kV6
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以下是用不同语言写成的Hello World程序的几个例子: zo@,>'m
Ada .I%B$eH
with Ada.Text_Io; use Ada.Text_Io; ?',Wn3A
procedure Hello is TV}=$\D
begin ^=qV)j
Put_Line ("Hello, world!"); }6*JX\'q
end Hello; ri4:w_/{,Y
#z}0]GJKj
m/`L3@7Tt
汇编语言 Hio+k^
M{p9b E[j
x86 CPU,DOS,TASM S(lqj6aa}
MODEL SMALL pqe%tRH{
IDEAL FA;B:O@:'
STACK 100H BL%3[JQ
kRH
D{6mol
DATASEG ,<[x9 "3\
HW DB 'Hello, world!$'
JY_!G
>E
WK
cocM
CODESEG 3M>y.MS
MOV AX, @data milQxSpj
MOV DS, AX |C>\ku*
MOV DX, OFFSET HW -o57"r^x
MOV AH, 09H 1U
='"
INT 21H ^UyN)eX
MOV AX, 4C00H jRxzZt4
INT 21H jJ?G7Q5l
END u3sr"w&
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l I2UpfkBP
x86 CPU,GNU/Linux,NASM _,w*Rv5=
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). FPEab69
;Enter this into "hello.asm" then type: o_ r{cnu
;"nasm -f elf hello.asm" ^$<:~qq!
;"ld hello.o -o hello" }{v0}-~@
;"./hello" S4OOm[8
J$-1odL0Z
section .data ;data section declaration Y>K8^GS
msg db 'Hello World!',0AH nyOvB#f
len equ $-msg ;string length w<Iq:3
y tTppmJF
section .text ;code section declaration U[:Js@uH_
global _start ;entry point (start of execution) ~!_UDD
_start: mov edx,len ;string length -#g0
mov ecx,msg ;string start Ef=4yH?\j
mov ebx,1 ;file handle: stdout >Fc=F#tA9
mov eax,4 ;sys_write {7K l#b
int 80h ;kernel system call Zm#,Ike?#
'@"A{mrE
mov ebx,0 ;return value <XzRRCYQ
mov eax,1 ;sys_exit +:u
&]
int 80h ;kernel system call NSQ)lSW,;
oOGFg3X
FQcm= d_s
x86 CPU,Windows,MASM32 Apkb!"}>
.386 ~-~iCIaTb
.model flat,stdcall CC]q\%y-_
option casemap:none !@>:k3DC&
;Include 文件定义 1119Y eL
include windows.inc Po.izE!C
include user32.inc P+,YWp
includelib user32.lib g5
y*-t
include kernel32.inc ^;@!\Rc
includelib kernel32.lib =E&1e;_xlE
;数据段 e(9K.3@{
.data mHNqzdaa
szCaption db 'A MessageBox!',0 ~~#/jULbV
szText db 'Hello,world!',0 C 6d#+
;代码段 ZV[-$
.code &CfzhIi*!
start: XL(2Qk
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK &cf_?4
invoke ExitProcess,NULL F^Mt}`O
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> h\8bo=
end start <p[RhP
M*F`s&vM
r6kQMFA
AWK N
Q}5'
BEGIN { print "Hello, world!" } +lJD7=%K]Z
DMT2~mh
MU1T="N^+
BASIC b =:%*gq,
传统版BASIC(例如GWBASIC): o|V=3y
Ok
MA v-#
10 PRINT "Hello, world!" C(}Kfi@6N
20 END n'@XgUI,
V}Pv}j:;
或在提示符输入: Rz33_ qA
Fh.ZsPn,m
?"Hello, world!":END (-{.T
:Z]\2(x
现代版BASIC(例如Quick BASIC): ),0Ea~LB4
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Print "Hello, world!" d^`n/"Ice
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以下的语句在Quick BASIC中同样有效: lV?OYS|4i
"-G&]YMl
? "Hello,world!" NaeG)u#+
S?Uvt?
JwUz4
BCPL 8HdjZ!
GET "LIBHDR" ,m)YL>k
~uJO6C6A
LET START () BE i\\,Z
L
$( MUp{2_RA
WRITES ("Hello, world!*N") /fxv^C82yv
$) ;*e$k7}F
))uki*UNK
1@`mpm#Y
Befunge wQX%*GbL2
"!dlrow olleH">v 0f,Ii_k bT
, <:~'s]`zf
^_@ d'p@[1/
nAyyjd3!S
lUHpGr|U%
Brainfuck E\~!E20^
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< !(qaudX{>k
+++++++++++++++.>.+++.------.--------.>+.>. 6CzN[R}
It8@Cp.dU
<Kq!)) J'
C -)E6{
#include <stdio.h> +Z/aG k;
$9<P3J 1
int main(void) y?V#LW[^E
{ RZI4N4o
printf("Hello, world!\n"); (M,*R
v
return 0; .p\<niu7
} C-VkXk
}_cX" s
T28Q(\C:}
C++ IaRq6=[
#include <iostream> iR4!X()
t%30B^Ii%K
int main() )>WSuf
j
{ %<'PSri
std::cout << "Hello, world!" << std::endl; N x/_+JWje
return 0; ]a\HgFp@
} uJ%XF*> _D
oz\r0:
~H`(z zk
C++/CLI P!lTK
int main() hgF4PdO1e
{ Rm=[Sj84
System::Console::WriteLine("Hello, world!"); %2rUJaOgy$
} BxGz4
c`!8!R
[214b=
C# (C Sharp) wTu=v
class HelloWorldApp 7f
q\
H{
{ <@H=XEn
public static void Main() X:gE
mcXc
{ AO^c=^
System.Console.WriteLine("Hello, world!"); nV?e(}D
} j*@EJ"Gm>
} /Wm3qlv
4(}V$#^+
!\N|$-M
COBOL FLOSdMYdw
IDENTIFICATION DIVISION. T~-PT39E
PROGRAM-ID. HELLO-WORLD. Z/=HQ8
k[;(@e@c
ENVIRONMENT DIVISION. Ih5F\eM
MNsgD3
DATA DIVISION. Ed&M
ewzZb*\
PROCEDURE DIVISION. mi$*,fz
DISPLAY "Hello, world!". ~JxAo\2i
STOP RUN. #kL4Rm;
ryoD 1OE
.g95E<bd
Common Lisp FR 1se
(format t "Hello world!~%") -S*MQA4
@1G`d53N
Q~AK0W
DOS批处理 9_\1cSk'
@echo off >&2n\HR\
echo "Hello, world!" %^66(n)
WG.J-2#3
{,b:f
Eiffel ;l2pdP4jf
class HELLO_WORLD pbb6?R,
'Gds?o8
creation \H$j["3
make 00(#_($
feature 5_ioJ
make is ?*)wQZt;
local 8gI~x.k`
io:BASIC_IO !)TO2?,^
do ,mW-O!$3W
!!io 8t
Ef>
io.put_string("%N Hello, world!") F
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end -- make 7Yd]#K{$
end -- class HELLO_WORLD {pW(@4U
q<*UeyE
S
\hT=U*dMR
Erlang # ~T
KC|G
-module(hello). G u P1
-export([hello_world/0]). 60&4?<lR4
ImVHX~qHJ
hello_world() -> io:fwrite("Hello, World!\n"). d 1bx5U
dTW3mF4=
>@NGX-gp
Forth EkE U}2
." Hello, world!" CR pUXszPf
nXnO]wXC
vx8-~Oq{|;
Fortran .ITR3]$
WRITE(*,10) v22ZwP
10 FORMAT('Hello, World!') p[lciWEW
STOP BSib/)p
END 0"to]=
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KQ(7% W
HTML WGrG#Kw[
<HTML> z^r
<HEAD> ~}fQ.F*7R
<TITLE> Hello World! </TITLE> @$(@64r
</HEAD> ~)&im.Q4
<BODY> H]/!J]
<p>Hello World!</p> zV8^Hxl
</BODY> ?h4Rh0rkX
</HTML> %1oG<s
$9Yk]~
h16 i]V
HQ9+ 4(FEfde=
H C%y!)v_x
QL4BD93v
Lw!Q*3c
INTERCAL 7-Yn8Gq
PLEASE DO ,1 <- #13 f.&((z?rC
DO ,1 SUB #1 <- #238 Pwh0Se5Z
DO ,1 SUB #2 <- #112 9:tn!<^=I
DO ,1 SUB #3 <- #112 V
K)%Us-
DO ,1 SUB #4 <- #0 o1(?j}:c|
DO ,1 SUB #5 <- #64 (jY -MF3
DO ,1 SUB #6 <- #238 HQOz
DO ,1 SUB #7 <- #26 /Sag_[i
DO ,1 SUB #8 <- #248 9s}y*Vp
DO ,1 SUB #9 <- #168 B Ctm05
DO ,1 SUB #10 <- #24 j\S}TaH0e
DO ,1 SUB #11 <- #16 };=44E'7
DO ,1 SUB #12 <- #158 u4UQMj|q
DO ,1 SUB #13 <- #52 )Cm7v@B
PLEASE READ OUT ,1 \h}a?T6
PLEASE GIVE UP 2'6:fr=R
)HN,A z"
GE{u2<%@
Java 56
raZC
public class Hello TQ\\/e:
{ ~Uz1()ftz
public static void main(String[] args) ,B=;NKo
{ 2l9RU}
System.out.println("Hello, world!"); Z7t-{s64
} *?GV(/Q
} 8={"j
^5yFb=2
lB
Y "@N
JSP zz1e)W/
<% ]VU a$$
out.print("Hello, world!"); ;^K4kK&f
%>
Mmu>&C\
LT ZoO9O
&CEZ+\bA
MIXAL (f*0Wp;
TERM EQU 19 the MIX console device number 17nONhh
ORIG 1000 start address a8Q=_4
l
START OUT MSG(TERM) output data at address MSG ,ruL7|T&
HLT halt execution Bco_\cpt]z
MSG ALF "MIXAL" &>.
w*
ALF " HELL" .s)z?31
ALF "O WOR" jml
4YaG Z
ALF "LD " I2$.o0=3Y
END START end of the program p+F{iMC
=U_WrY<F
`V1D&}H+G
Nuva rprtp5C g
<..直接输出..> V!Q1o!J
Hello, world! Alsr6uLT1
9Xv>FVG!
<..或者..> 8"\g?/
Jt3]'Nr04@
<. c88I"5@[bD
// 不带换行 cF7efs8u
? "Hello, world!" ;P{HePs=)
zu~E}
// 或者 wSMP^kG
'L"dM9#>
// 带换行 Uu9*nH_
?? 'Hello, world!' &u_s*
.> `2M`;$~ 5
+Xg]@IS-eg
9ntXLWK7e
OCaml 3 oG5E"G
let main () = Y0||>LX
print_endline "Hello world!";; n' \poB?
FD&"k=p+X
l }i
.
Pascal S]7RGzFe
program Hello; x[,HK{U|t
begin ];.H]TIc6
writeln('Hello, world!'); Xy>+r[$D:
end.
'7!b#if
nzdJ*C
St6U
Perl %z(nZ%,Z
#!/usr/local/bin/perl $ 'B0ZL
print "Hello, world!\n"; *[(}rpp M
MMpGI^x!-X
XkWO -L
PHP !XvQm*1
<?php Myj 68_wf
print("Hello, world!"); 7>a-`"`O
?> J 1?)z+t9~
PN!NB.
>^8=_i !
Pike =c-,uW11[
#!/usr/local/bin/pike 1?6;Oc^
int main() <3wfY
#;><
{ i U^tv_1
write("Hello, world!\n"); <4gT8kQ$x
return 0; [ET03 nZ
} ;BsPms@U
RN0@Q~oTI
_7AR2
PL/I BnLM ;5
>
Test: procedure options(main); ?(&)p~o
declare My_String char(20) varying initialize('Hello, world!'); VPB,8zb]
put skip list(My_String); bN6FhKg|
end Test; cI9} YSk
+[MzF EE[
<mm.b
Prolog ;$Eg4uX
goal *20$u% z2
write("hello,world!"). <_S>- ;by
l@x/{0
Q)\~=/Lb
Python y^o*wz:D*
#!/usr/local/bin/python 5$,dpLbL
print "Hello, world!" R89;<,Ie
>i> %@
rpk
)i:k\
REXX r>=)Y32Q
say "Hello, world!" \;z*j|;B
{ XN"L3A
>AT{\W!N
Ruby Fxu'(xa
#!/usr/bin/ruby IpX>G]"-C
print "Hello, world!\n" ^6*2a(S&
d66
GO];"
JsfX&dX0
Scheme ,;aELhMZ
(display "Hello, world!") ZgN )sVJ
(newline) fZqMznF
8y-Sd\0g
+mReWf:o
sed (需要至少一行输入) 3x=f}SO&
sed -ne '1s/.*/Hello, world!/p' o1j_5c
PS
CzF#feTA
s3+^q
Smalltalk .^<4]
Transcript show: 'Hello, world!' ]UR@V;JG
}n+#o!uEf
6]=$c<.&
SNOBOL CS;bm`8a
OUTPUT = "Hello, world!" T+_pm DDN
END 9o|=n'o
S\"/=|\
ZGUhje!
SQL G+^Q
_w
create table MESSAGE (TEXT char(15)); VP|ga}(
insert into MESSAGE (TEXT) values ('Hello, world!'); EkV
LSur
select TEXT from MESSAGE; #K8kz
drop table MESSAGE; aKkG[qN
>4gGb)
Y)kO"
Tcl :G/T{87H
#!/usr/local/bin/tcl ,&Iw5E[
puts "Hello, world!" l.ri]e
|[ymNG
*_
2db
TScript D<=:9
? "Hello, world!" nE!h&}(
(nWi9(}J
A.aUWh
Turing y^vB_[6l
put "Hello, world!" -nbo[K
86c@Kk7z
8+ P)V4}
UNIX-style shell |p"P+"#
程序中的/bin/sh可改为您使用的shell
~yQby&s
P8lx\DA
#!/bin/sh `uz15])1<
echo 'Hello, world!' $9pFRQC'q
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Yx4TUA$c'
GUI 1wX0x.4d
R;2tb7 o
Delphi }%K)R5C
program HelloWorld; =-XI)JV#
uses 0{0|M8
Dialogs; ')kn
begin o1x IGP<
ShowMessage('Hello, World!'); Q/oe l'O*x
end. ai7*</ls
h
rL_. 4
(1`z16
Nuva `N8?F3>
<. ?[n{M
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) }bQqln)#
.> y8=(k}=3
Q;]g9T[)
S2/6VoGE
Visual Basic 8]!%mrS
MsgBox "Hello, world!" r|U'2+vn
'或者 @D<q=:k
Print "Hello, world!" mJBvhK9%
s68&AB
%E\&9,
Visual FoxPro 7,.Hj&'B
? "Hello, world!" 1&S34wJF
Jx#r
`Zn2Vx
X11 g`6_Ao8
用一个程序 $3aq+w:
qJY'"_Q{
xmessage 'Hello, world!' *>x~`
q8U*
用C++和gtkmm 2 /s91[n(d
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#include <iostream> GfEg][f
#include <gtkmm/main.h> @<$-*,
#include <gtkmm/button.h> ig
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#include <gtkmm/window.h> JI{|8)S
using namespace std; 0/".2(\}T
OGgP~hd
class HelloWorld : public Gtk::Window Tk[`kmb
{ y6.Q\=
public: ?W l=F/
HelloWorld(); >"^H"K/T
virtual ~HelloWorld(); %kM|Hk3d
protected: [i7Ug.Oi"
Gtk::Button m_button; L
B:wo.X
virtual void on_button_clicked(); U#=Q`
}; $vlc@]~d`&
_wa1R+`_
HelloWorld::HelloWorld() : m_button("Hello, world!") H{Zfbb
{ ES~ykE
set_border_width(10); f0S&