“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。 b8$(j2B~
`fm^#Nw
将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 N{o3w.g
PY{])z3N
以下是用不同语言写成的Hello World程序的几个例子: !b:;O
+[
Ada 8O='Q-&8
with Ada.Text_Io; use Ada.Text_Io; %g+*.8;"b
procedure Hello is '(o*l
begin 1 Ka,u20
Put_Line ("Hello, world!"); XZ1oV?Z4
end Hello; W:V:Ej7 h
aW.[3M;?v
r)Dln5F
汇编语言 ImZ!8#
NL7CeHs5
x86 CPU,DOS,TASM _Vl22'wl
MODEL SMALL WY3D.z-</
IDEAL yWkg4
STACK 100H QO|roE
lf?dTPrD
DATASEG [l%6wIP&{
HW DB 'Hello, world!$' //W7$DYEG
-w#*~Q{'*
CODESEG 8n`O{8:fi
MOV AX, @data Bk)*Z/1<x
MOV DS, AX [<H'JsJl
MOV DX, OFFSET HW |^!
MOV AH, 09H y)%CNH)*x
INT 21H y^xEZD1X6-
MOV AX, 4C00H <1xs
ya[e
INT 21H uhJnDo
END ;{% R[M'
^_C]?D?
r'5~4'o$
x86 CPU,GNU/Linux,NASM ,y%4QvG7a
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). \n}@}E L
;Enter this into "hello.asm" then type: N~]
4,~
;"nasm -f elf hello.asm" \u@*FTS
;"ld hello.o -o hello" dnXre*rhz
;"./hello" wx2EMr
I C?bqC+
section .data ;data section declaration $-Wn|w+h<a
msg db 'Hello World!',0AH {~u#.(
len equ $-msg ;string length m?4L>'
ZQV,gIFys
section .text ;code section declaration /%4wm?(eA
global _start ;entry point (start of execution) P9/Bc^5'
_start: mov edx,len ;string length +T|M U
mov ecx,msg ;string start >3\($<YDZM
mov ebx,1 ;file handle: stdout vC1D}=Fp
mov eax,4 ;sys_write 5UU1HC;C
int 80h ;kernel system call YA,vT[kX
F{;{o^Pv
mov ebx,0 ;return value piv/QP-X
mov eax,1 ;sys_exit `$hna{e^n
int 80h ;kernel system call %n7Y5|Uh
3LK]VuZE
sCi"qtHP
x86 CPU,Windows,MASM32 y8k*{1MuO
.386 rr;p;
.model flat,stdcall ,|u^-J@
option casemap:none %hnv
go:^g
;Include 文件定义 xQ{n|)i>
include windows.inc "?r=n@Kv
include user32.inc 45+w)Vf!
includelib user32.lib ,-[e{=Cz
include kernel32.inc dH8^\s .F
includelib kernel32.lib /j|Rz5@=
;数据段 fP:26pK^
.data yCt,-mz!z
szCaption db 'A MessageBox!',0 RD1N@sHDKc
szText db 'Hello,world!',0 o fw0_)!Q
;代码段 OwJZ?j&)
.code f5p:o}U*
start: wE*jN~
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK gs?=yNL
invoke ExitProcess,NULL }g@5%DI]
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> YN<:k
Wu
end start Aqp$JM
>
E/[<} ./
y;1
'hP&
AWK RXZ}aX[h
BEGIN { print "Hello, world!" } n:i?4'-}
?oKY"C8/
P*M$^p
BASIC nm3/-Q},
传统版BASIC(例如GWBASIC): Q
\E[py
:j=/>d],%
10 PRINT "Hello, world!" /`)>W :
20 END gOnVN6
L4w KG&
或在提示符输入: %?`TyVt&0
QL{{GQ_dn
?"Hello, world!":END (sHvoE^q-
3$E\B=7/U
现代版BASIC(例如Quick BASIC): \KpSYX1
luYa+E0
Print "Hello, world!" fsr0E=nV
| D?lF
以下的语句在Quick BASIC中同样有效: M:* ^k
t(,_
? "Hello,world!" 4PVkKP'/
Ie14`'
>^!qxb-
BCPL x<-n}VK\
GET "LIBHDR"
equTKM
a1p}y2
LET START () BE {8YNmxF#
$( m:{ws~
WRITES ("Hello, world!*N") TAl#V7PF}
$) *;]j#0
[l9iWs'M
k&kx%skz
Befunge k'hJ@6eKS
"!dlrow olleH">v Gx.iZOOH/
, !VF.=\iH/
^_@ Le*sLuxk<
E}*
@aX$}
Brainfuck @fML.AT
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< -5_[m@Vr
+++++++++++++++.>.+++.------.--------.>+.>. |KM<\v(A{
S@N:Cj
R>05MhA+
C u\,("2ZW9+
#include <stdio.h> y&$mN
%#^)hX,+Q
int main(void) Z6Owxqfht
{ Ul41RNy)
printf("Hello, world!\n"); ,2I8,MOg
return 0; $Bd13%>)
} %^r}$mfy:0
s?j` _B
.%iJin"
C++ z
g '1T2t
#include <iostream>
~MOab e
Rp!R&U/
int main() }E}b/ulg1
{ pu"`*NL
std::cout << "Hello, world!" << std::endl; 3O W)%
return 0; [J6*Q9B<V&
} y].vll8R
D m|_;iO,
%S2^i3
C++/CLI -@wnQ?
int main() 5tIM@,.I/
{ c|s*(WljY
System::Console::WriteLine("Hello, world!"); ?4]#gCks
} ~;pv&s5}
UX9r_U5)
Hvm+Tr2@
C# (C Sharp) :n4X>YL)
class HelloWorldApp :4ndU:.L
{ n$ri:~s
public static void Main() (($"XOU
{ -]uN16\ F
System.Console.WriteLine("Hello, world!"); ?&H1C4
} TvEN0RV2
} Zv`j+b
+&w=*IAKZ
jf_0IE
COBOL 0S{dnp
IDENTIFICATION DIVISION. J5J$qCJq
PROGRAM-ID. HELLO-WORLD. k]vrqjn Q
]G0`W6;$]
ENVIRONMENT DIVISION. E%f;Z7G
rY
0kzD/
DATA DIVISION. ; U)a)l'y
k#4%d1O}
PROCEDURE DIVISION. q*<Fy4j
DISPLAY "Hello, world!". NbD"O8dL~E
STOP RUN. .Q,IO CHk
"]j GCo>9
Ew4>+o!
Common Lisp 31w9$H N
(format t "Hello world!~%") `o9vE0^T<
C3Hq&TVf/
QFI8|i@
DOS批处理 7VF^&6
@echo off \~(ww3e
echo "Hello, world!" {|}tp<:2
6~
*w~U
Wp0e?bK_
Eiffel Z=ayVsJ3
class HELLO_WORLD 5aF03+ko
,1\nd{
creation `Z3Qx~fx
make CvCk#:@HM
feature hrwQh2sm
make is YU89m7cc'
local ZWC-<QO"<
io:BASIC_IO 6,"fH{Bd
do ^lqcF.
!!io AxaabS$\
io.put_string("%N Hello, world!") TK )Kq
end -- make _)J;PbK~
end -- class HELLO_WORLD +F &,,s"&
>uok\sX
@#T*OH
Erlang ~~?4w.k
-module(hello). k)W8%=R
-export([hello_world/0]). 00') Ol&
wW3fsXu
hello_world() -> io:fwrite("Hello, World!\n"). `"0#lZ`n
C+r<DC3
&^ sgR$m
Forth >K{/ Jx&
." Hello, world!" CR IT,TSs/Y
/t-m/&>
Md \yXp
Fortran `U4R%
qhWA
WRITE(*,10) w ' E
10 FORMAT('Hello, World!') zN(fZT}K5
STOP g)*[W>M
END W;]*&P[[
dbTPY`
|bQX9|L
HTML DWB.dP *8
<HTML> (+<SR5,/3
<HEAD> |Ire#0Nwx
<TITLE> Hello World! </TITLE> Do7&OBI~
</HEAD> p @@TOS
<BODY> G:FP9
<p>Hello World!</p> D?w?0b Eu
</BODY> `.f<RVk-
</HTML> 3~"G(UP
Y{X79Rd
^|@t 2Rp@
HQ9+ h+k:G9;sS
H tT}*%A
AL/q6PWi
\UI7H1XDH
INTERCAL =T)4Oziks
PLEASE DO ,1 <- #13 }/ 6Q3B
DO ,1 SUB #1 <- #238 ]HP
aM
DO ,1 SUB #2 <- #112 @O}%sjC1
DO ,1 SUB #3 <- #112 ;z;O}<8s
DO ,1 SUB #4 <- #0 i,R<`K0
DO ,1 SUB #5 <- #64 Kk2PWJ7
DO ,1 SUB #6 <- #238 X>w(^L*>
DO ,1 SUB #7 <- #26 ](3e +JC
DO ,1 SUB #8 <- #248 JcEPwF.
DO ,1 SUB #9 <- #168 8\m_.e
DO ,1 SUB #10 <- #24 jX^uNmb
DO ,1 SUB #11 <- #16 8kQ
>M
DO ,1 SUB #12 <- #158 Vx@JP93|
DO ,1 SUB #13 <- #52 k%V#{t.
PLEASE READ OUT ,1 Z~^)B8
PLEASE GIVE UP `7qZ6Z3z@
kP9DCDO`[5
.P\wE";
Java +Zu*9&Cx
public class Hello `}gjfu -'\
{ oD]tHuDa
public static void main(String[] args) cq`v8
{ 1u&}Lq(
System.out.println("Hello, world!"); w66iLQ\@
} @b\/\\{
} $:V'+s4o
^)Xl7d|m+
[z$th
JSP OD!b*Iy|
<% 2xvTijO0
out.print("Hello, world!"); !|{T>yy
%> q"OvuHBSOn
[psW+3{bG
<A +VS
MIXAL R]e?<,"X
TERM EQU 19 the MIX console device number c%_I|h<?iT
ORIG 1000 start address UD`bK a`E
START OUT MSG(TERM) output data at address MSG $pK2H0c
HLT halt execution g+oSbC
MSG ALF "MIXAL" 4S>A}rWz
ALF " HELL" {)]5o| Hx
ALF "O WOR" GGcNaW'
ALF "LD "
8%]o6'd4
END START end of the program h.@5vhD
Q?KWiFA}'
L.XGD|m
Nuva x5vvY
<..直接输出..> 6p%;:mDB
Hello, world! p`lv$ @q'
5y;texsj[
<..或者..> -@{5
u d
I!?-lI@(
<. UU')V
// 不带换行 @l:\0cO
? "Hello, world!"
L5/J
pIBL85Xe
// 或者 1e.V%!Xk
m,KG}KX
// 带换行 XVcY?_AS#
?? 'Hello, world!' cl
kL)7RQ
.> Lu,72i0O ^
.}Va~[0j
9~i=Af@
OCaml &GF@9BXI3
let main () = 5s3!{zT{
print_endline "Hello world!";; Q$!dPwDg
2mj?&p?
F)_zR
Pascal {2Jo|z
program Hello; rnW(<t"
begin rM/Ona2x
writeln('Hello, world!'); -0rc4<};h
end. +~b@W{
M:6Yy@#T.
NuZiLtC
Perl r w(EI,G
#!/usr/local/bin/perl LUSBRr8
print "Hello, world!\n"; 34S0W]V
xwK{}==U
M?m Pi 3
PHP x.ucsb
<?php zc&i 4K
print("Hello, world!"); 8Uoqj=5F
?> u69fYoB'
Ybp';8V
"#=WD
Pike @
Br?
#!/usr/local/bin/pike 0xzS9
int main() mu@IcIb>
{ `c'R42SA
write("Hello, world!\n"); e6
a]XO^
return 0; ]_mcJ/6:
} 0'O6-1Li
s/0~!0
yBnUz"
PL/I .M>g`UW
Test: procedure options(main); B<!WAw+
declare My_String char(20) varying initialize('Hello, world!'); ;C~:C^Q\H
put skip list(My_String); ITf4PxF
end Test; W7?f_E\>W
df7 xpV
Y%#r&de
Prolog fB`7f
$[
goal yN9setw*,M
write("hello,world!"). :z a:gs0
R[f@g;h
y /OPN<=*
Python P>qDQ1
#!/usr/local/bin/python 9
M!U@>
print "Hello, world!" C$7dmGjZ
C#:L.qK
2_CJV
REXX 5sguv^;C5
say "Hello, world!" r"=6s/q7
Gp}}MGk
=O'>H](Q
Ruby 2F|06E'
#!/usr/bin/ruby '-vzQ d@y
print "Hello, world!\n" T )"Uq
TUM7(-,9
w/Y6m.i1
Scheme 0)E`6s#M
(display "Hello, world!") X$9
"dL
(newline) k/.a
yLq
G*W54[
H*vd
sed (需要至少一行输入) d>}R3T
sed -ne '1s/.*/Hello, world!/p' )=6o,
EbMG9
b";D*\=x
Smalltalk B'~CFj0W%=
Transcript show: 'Hello, world!' D5jZ;z}
>SaT?k1E
q
!Nb-O{
SNOBOL jZP~!q
OUTPUT = "Hello, world!" 0qhSV B5
END q+?>shqsZ
7MhN>a;A\
Nk@a g)
SQL V
jZx{1kCR
create table MESSAGE (TEXT char(15)); !1fAW!8
insert into MESSAGE (TEXT) values ('Hello, world!'); )&wJ