“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。
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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》。 8bLA6qmM\
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以下是用不同语言写成的Hello World程序的几个例子: "ys#%,Z
Ada abh='5H|^|
with Ada.Text_Io; use Ada.Text_Io; Fd*)1FQKT
procedure Hello is <[ />M
begin Z|K+{{C
Put_Line ("Hello, world!"); 5:6as^i:b
end Hello; M>VT$!Lx
0W<:3+|n4
N@lTn}U
汇编语言 LF vKF .
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x86 CPU,DOS,TASM @r]wZ~@
MODEL SMALL x*Y&s<
IDEAL :p0|4g
STACK 100H fhw.A5Ck
aN?{MA\
DATASEG ~CgKU8
HW DB 'Hello, world!$' 4HQP,
hqIYo
.<
CODESEG N=^{FZ
MOV AX, @data Gx
ci
MOV DS, AX `mXbF
MOV DX, OFFSET HW [`nY/g:
MOV AH, 09H k
#y4pF_
INT 21H ;UTT>j
MOV AX, 4C00H 17AJT
INT 21H wYQTG*&h
END mr
dG-t(k
+b"RZ:tKp
r|wB&
PGW
x86 CPU,GNU/Linux,NASM Q?-HU,RBO
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). +ntrp='7O7
;Enter this into "hello.asm" then type: aG.j0`)%
;"nasm -f elf hello.asm" 7p%W)=v
;"ld hello.o -o hello" knrR%e;
;"./hello" 6FNs4|(d
GO{o #}
section .data ;data section declaration "| 0g 1rd
msg db 'Hello World!',0AH 47>IT
len equ $-msg ;string length /` 891(f,
L1A0->t
section .text ;code section declaration ?muI8b
global _start ;entry point (start of execution) MG)wVS<d_
_start: mov edx,len ;string length M>W-lp^3
mov ecx,msg ;string start GxE"q-G
mov ebx,1 ;file handle: stdout J0CEZ
mov eax,4 ;sys_write fmyyQ|]O"
int 80h ;kernel system call ]L#6'|W
FjF:Eh
mov ebx,0 ;return value #va|&QBZxM
mov eax,1 ;sys_exit B?`n@/
int 80h ;kernel system call rq bX9M^
_9!*laR!2
N=FU>qbz
x86 CPU,Windows,MASM32 p?(w! O
.386 l*_%K}%?V
.model flat,stdcall y^7;I-
option casemap:none t)P5bQ+$u9
;Include 文件定义 UQ6UZd37
include windows.inc [ fvip_Pt
include user32.inc u3)Oj7cX
includelib user32.lib ],CJSA!5F
include kernel32.inc #U45;idp
includelib kernel32.lib ru[W?O"
;数据段 7zo)t1H1
.data d\Cx(Lb[
szCaption db 'A MessageBox!',0 :U)>um34e
szText db 'Hello,world!',0 [SGt ~bRJ
;代码段 Ylbh_ d~BU
.code 1cPm $=B
start: jY>|>]4X
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ?&$??r^i
invoke ExitProcess,NULL V?AHj<
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kx,9n)
end start VeK^hz
R^Z
GyI(1OAW
6(Za}H
AWK <YX)am'\y
BEGIN { print "Hello, world!" } B;xw @:H
<tkxE!xF`J
AffVah2o:
BASIC BzBij^h
传统版BASIC(例如GWBASIC): %\6ns
P'f0KZL;
10 PRINT "Hello, world!" ~XAtt\WS
20 END *V+6409m
cpz'upVOZ
或在提示符输入: :Awnj!KNCc
Vj?{T(K1[
?"Hello, world!":END s`"o-w\$>
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现代版BASIC(例如Quick BASIC): 3GVE/GtU
@y:mj \J9
Print "Hello, world!" %-ih$ZY
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以下的语句在Quick BASIC中同样有效: cx%[hM09
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? "Hello,world!" *?jU$&Qpj*
s/ [15
0tbximmDb
BCPL i*34/
GET "LIBHDR" #hL<9j
{Ic~}>w
LET START () BE $nN`K*%
$( Eq$Q%'5*ua
WRITES ("Hello, world!*N") 0{M=^96
$) ;\(Wz5Ok&J
1(!w xJ
p&1IK8i"
Befunge v&g(6~b_>
"!dlrow olleH">v VsS.\1
, APxy%0Q
^_@ i!
G^=N
vt{s"\f
(I3:u-A
Brainfuck V9xZH5T8^
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< *o]Q<S>lH
+++++++++++++++.>.+++.------.--------.>+.>. _nw=^zS
d>"t*>i]>
Z9-HQ5>
C mq~rD)T
#include <stdio.h> GE4d=;5
-$Bom
int main(void) tBEZ4 W>67
{ zrfE'C8O
printf("Hello, world!\n"); ' k~'aZ
return 0; 0{|ib !
} b|U48j1A
z9mmZqhK\
gs;3NW
C++ (lv|-Phc.
#include <iostream> RFF&-M]
`P;fD/I
int main() i<<NKv8;
{ ow :}NI
std::cout << "Hello, world!" << std::endl; {XYv&K
return 0; R_4]6{Rm
} s_Y1rD*B
`jY*0{
:UjHP}s
C++/CLI 9G(.=aOj,
int main() Hb&-pR@e\?
{ `_{'qqRhe
System::Console::WriteLine("Hello, world!"); sW%U3,j
} P;jl!o$
E<]l]?
?>47!):-*
C# (C Sharp) #"|Y"#@k
class HelloWorldApp arf`%9M
{ {E!"^^0`
public static void Main() ) *:<3g!
{ a&YD4DQ05
System.Console.WriteLine("Hello, world!"); }>:v
} _2{i}L
} .S/W_R
w-Zb($_
#BK\cIr
COBOL #5HJW[9
IDENTIFICATION DIVISION. 5A]IiX4Z
PROGRAM-ID. HELLO-WORLD. Zf;1U98oC
(:3rANY|
ENVIRONMENT DIVISION. 1G/bqIMg63
Ve>*KHDSt
DATA DIVISION. S3nA}1R
=L~,HS(l,
PROCEDURE DIVISION. @]lKQZ^2&
DISPLAY "Hello, world!". .E:QZH' M
STOP RUN. C:/ca)
Zab5"JR
Nt42v
Common Lisp w91gM*A
(format t "Hello world!~%") s+?r4t3H!
kJIKULf
U+sAEN_e k
DOS批处理 O?Xg%k#
@echo off Z[8{V
echo "Hello, world!" YIs (Q
Qg
btb-MSkO
Eiffel V.J[Uwf
class HELLO_WORLD C/dqCUX:
Y<Y5HI"
creation Cec!{]DL&
make s$xctIbm?,
feature -[OGZP`8
make is ~V3pj('/)'
local K9
io:BASIC_IO !]qwRB$5
do -WP_0
!!io EOhUr=5~
io.put_string("%N Hello, world!") h
&9Ld:p
end -- make s9)
@$3\
end -- class HELLO_WORLD M9*7r\hqYV
e#L/
e$QX?y .
Erlang $A6'YgK
-module(hello). VR5$[-E3
-export([hello_world/0]). bnLvJ]i)
&k(t_~m>
hello_world() -> io:fwrite("Hello, World!\n"). sJtz{'
dUeM+(s1
Y1EN|!WZ
Forth ~=(?Z2UDA_
." Hello, world!" CR [La=z7*
+jzpB*@
\Oh9)X:I
Fortran 0rY<CV;fZ
WRITE(*,10) 9ZUG~d7_
10 FORMAT('Hello, World!') JE,R[` &
STOP E,E:W uB
END x:=Kr@VP
csT_!sII
Oa\!5Pw1
HTML Ac<V!v71
<HTML> ]hTYh^'e
<HEAD> 20;M-Wx
<TITLE> Hello World! </TITLE> qJB9z0a<Ov
</HEAD> iOm1U_S
<BODY> ga^O]yK
<p>Hello World!</p> 0iqa]Am
</BODY> G\tT wX4
</HTML> ]OZZPo
"?lirOD
^Qz8`1`;Z
HQ9+ F6Z l#eL
H KbVV[ *
7qA);N
x_{ua0BLDf
INTERCAL F>2t=r*9
PLEASE DO ,1 <- #13 fHYEK~!C04
DO ,1 SUB #1 <- #238 cqr!*
DO ,1 SUB #2 <- #112 eSoOJ[&$
DO ,1 SUB #3 <- #112 "QA CQ-
DO ,1 SUB #4 <- #0 Fgxh?Wd9
DO ,1 SUB #5 <- #64 hJ#U;GL
DO ,1 SUB #6 <- #238 ULMG"."IH
DO ,1 SUB #7 <- #26 Sj(uc#
DO ,1 SUB #8 <- #248 sIdo(`8$
DO ,1 SUB #9 <- #168 QsI#Ae,O#;
DO ,1 SUB #10 <- #24 zTrAk5E
DO ,1 SUB #11 <- #16 ^CI.F.#X|
DO ,1 SUB #12 <- #158 %k{~Fa
DO ,1 SUB #13 <- #52 g1muT.W]S
PLEASE READ OUT ,1 r Y|'<$wvg
PLEASE GIVE UP No<2+E!
4fw>(d(2
E*>tFw&[
Java D<5)i)J"
public class Hello h=YY>
x
{ i68'|4o
public static void main(String[] args) $4'I3{$
{ 5.F.mUO
System.out.println("Hello, world!"); @no]*?Gpa
} %m!o#y(hD`
} h1G]w/.ws
Y}'C'PR
i;*c|ma1>
JSP 9c8zH{T_{
<% l@4hBq
out.print("Hello, world!"); |M`B
%> rAIX(2@cR_
n'7 3DApW
p9XHYf72
MIXAL (\.[pj%-O
TERM EQU 19 the MIX console device number [yL%+I
ORIG 1000 start address e<YC=67n)
START OUT MSG(TERM) output data at address MSG +|r;t
HLT halt execution lYv :
MSG ALF "MIXAL" m7z/@b[
ALF " HELL" IK(G%dDw
ALF "O WOR" >BMJA:j
ALF "LD " &5Ea6j
END START end of the program cQzd0X
9c9-1iS
vLDMa>
Nuva JM -Tp!C>
<..直接输出..> @5\OM#WT~&
Hello, world! >k*QkIyq
|^C?~g
<..或者..> M:6H%6eT
"w=p@/C
<. DUEA"m h
// 不带换行 j\q1b:pE
? "Hello, world!" wd~e3%JM
EK_NN<So#
// 或者 TgJx%
1%^U=[#2`
// 带换行 o DPs xw
?? 'Hello, world!' X&MO}
.> Lg|j0-"N
`x~k}
p*_g0_^
OCaml F0o7XUt
let main () = MG[?C2KA/
print_endline "Hello world!";; g10$pf+L
99G/(Z}
Df||#u=n
Pascal bPC {4l
program Hello; [{6]i J
begin \r^=W=
writeln('Hello, world!'); Sq %BfP)a(
end. 35) ]R`f
dwv xV$Nt
#p&iH9c_
Perl u3Z*hs)Z%
#!/usr/local/bin/perl 6vro:`R ?
print "Hello, world!\n"; /$\yAOA'y
k )Z?
.sAcnf"
PHP 7.CzS
<?php {3yzC
print("Hello, world!"); pwT|T;j*
?> VhT4c+Zs
k`Ab*M$@Xs
y^Oj4Y:
Pike 8^\DQ&D
#!/usr/local/bin/pike FlOKTY
int main() 5aL0N
{ zv <,
write("Hello, world!\n"); Of7j~kdh83
return 0; 7n,nODbJ
} $n(?oyf
g}{Rk>k
bnUpH3
PL/I z[0L?~$
Test: procedure options(main); 7XT2d=)"
declare My_String char(20) varying initialize('Hello, world!'); 8UwL%"?YB
put skip list(My_String); `O.*qs5
end Test; FfI$3:9
m=z-}T5y!T
\! Os!s
Prolog DC]FY|ff
goal KqcelI?-I
write("hello,world!"). +z+25qWi
^(V!vI*
Yt++?
Python ;EW]R9HCH
#!/usr/local/bin/python
93kSBF#
print "Hello, world!" h#^IT
@NlnZfMu
@bmu4!"d
REXX {[hV['Awv
say "Hello, world!" f5
wn`a~h
hx+a.N
kMo;<Z
Ruby U;i:k%Bzy
#!/usr/bin/ruby mJc'oG-
print "Hello, world!\n" P%xk
@Q!f^
9j49#wG0"B
Scheme $f_;>f2N
(display "Hello, world!") *hF5cM[
(newline) ?:s `}b
E$ q/4
>sm<
< gVb
sed (需要至少一行输入) A{: a kK
sed -ne '1s/.*/Hello, world!/p' Z=z'j8z3
|08 tQ
;s3"j~5m)
Smalltalk <#7}'@
Transcript show: 'Hello, world!' ~YlbS-
{b<p~3%+Hc
9TO
SNOBOL 2Q|Vg*x\U
OUTPUT = "Hello, world!" 3VCyq7B^
END }LM^>M%
KAjKv_6=g
Fq&@dxN3
SQL j{7_p$JM
create table MESSAGE (TEXT char(15)); W6K]jIQ
insert into MESSAGE (TEXT) values ('Hello, world!'); KOV^wSwS
select TEXT from MESSAGE; 6G/)q8'G
drop table MESSAGE; ?WG9}R[qE/
qe"5&