“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。 _7 `E[&v
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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》。 V4?Oc2mS
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以下是用不同语言写成的Hello World程序的几个例子: ,kE=TR.|
Ada Tf l;7w.(A
with Ada.Text_Io; use Ada.Text_Io; 7|~:P$M
procedure Hello is QN #)F
begin :0dfB&7
Put_Line ("Hello, world!"); !fZLQc
end Hello; {y/-:=S)A
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汇编语言 RUc \u93n
*R!]47Y d
x86 CPU,DOS,TASM $'u\B
MODEL SMALL Iv1c4"
IDEAL ohTd'+Lm
STACK 100H C38XQLC
`(T!>QVW+g
DATASEG &<{}8/x8(
HW DB 'Hello, world!$' YAMfP8S
u9@b<
CODESEG P' FKk<
MOV AX, @data Qg{WMlyOP
MOV DS, AX !&0a<~Wi
MOV DX, OFFSET HW )8]3kQffJ=
MOV AH, 09H kpT>G$s~gy
INT 21H ;(`e^IVf
MOV AX, 4C00H ~9i qD
INT 21H 8q*";>*
END <|Iyt[s
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x86 CPU,GNU/Linux,NASM .' IeHh
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). JP_kQ
;Enter this into "hello.asm" then type: q-uLA&4
;"nasm -f elf hello.asm" #-dK0<:
;"ld hello.o -o hello" UhA_1A'B
;"./hello" ul$omKI$}
.]zw*t*
section .data ;data section declaration g`.{K"N>!
msg db 'Hello World!',0AH kpWzMd &RK
len equ $-msg ;string length L
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wJ(8}eI
section .text ;code section declaration T8mY#^sW_
global _start ;entry point (start of execution) 'W+i[Ep5Q
_start: mov edx,len ;string length G)4SWu0<t
mov ecx,msg ;string start m/" J
s
mov ebx,1 ;file handle: stdout \3:
L Nt
mov eax,4 ;sys_write ?GfxBZWJ
int 80h ;kernel system call ip674'bq7R
jB/V{Y#y9@
mov ebx,0 ;return value 6*V8k%H
mov eax,1 ;sys_exit |87W*
int 80h ;kernel system call lkN'uZ
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*CT.G'bQX
x86 CPU,Windows,MASM32 Bj+wayMi
.386 Ba<#1p7_
.model flat,stdcall YkVRl [
option casemap:none @7]\y7D
;Include 文件定义 mMslWe
include windows.inc `+Xe'ey
include user32.inc {[N?+ZJD*L
includelib user32.lib CCn/ udp@
include kernel32.inc lf;~5/%wMG
includelib kernel32.lib " C&x,Ic
;数据段 IF^[^^v+H
.data dGa@<hg
szCaption db 'A MessageBox!',0 %/X2 l
szText db 'Hello,world!',0 .2/,XwIr
;代码段 !b'IfDp[-!
.code u5/t2}^T
start: G6<HO7\
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK J/=
+r0c
invoke ExitProcess,NULL q1P :^<[
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> :K:f^o]s
end start qZ233pc
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u9 %;{:]h
AWK i5Eeg`NMl
BEGIN { print "Hello, world!" } F],TG&>5
d`UF0T
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BASIC #*+;B93)
传统版BASIC(例如GWBASIC): gfxoJihE
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10 PRINT "Hello, world!" l,^xX=,
20 END pAMo
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F@Pem
或在提示符输入: R2SBhs,+R
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?"Hello, world!":END \I:UC
%
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现代版BASIC(例如Quick BASIC): (2cGHYU3N<
*1i?6$[
"
Print "Hello, world!" +J%6bn)U
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以下的语句在Quick BASIC中同样有效: icU"Vyu
c
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? "Hello,world!" f>|9 l
j`{fB}
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BCPL #&}%70R)
GET "LIBHDR" >s44
%C6|-?TAd
LET START () BE \f6lT3"VN
$( ,zc"udpKF
WRITES ("Hello, world!*N") t`)
'LT
$) H&w(]PDh
8f|9W%jt
Z4=_k{*
Befunge
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"!dlrow olleH">v O.]_Ry\OXA
, md.*
^_@ }R4(B2vup
m2jwqx{G
~WzMK
Brainfuck ~}epq6L>
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 3O #~dFnp
+++++++++++++++.>.+++.------.--------.>+.>. GU2]/\W*a
owP6dtd)
^ b=5 6~[
C EPQ&?[6
#include <stdio.h> M4R%Gr,La
e6Wl7&@6
int main(void) f S(^["*G
{ 6'S5sRA
printf("Hello, world!\n"); w2.qT+;v
return 0; ": mCZUt
} |G[{{qZM5
]}jgB2x7
.WxFm@]/\
C++ L~'^W/N
#include <iostream> 0=3FO}[u
z?8zFP
int main() J,CJPUf&
{ P9 W<gIO
std::cout << "Hello, world!" << std::endl; S~]8K8"sT
return 0; n P0Ziu'{
} L%TxP6z4A
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C++/CLI #-l!`\@
int main() "Nk`RsW
{ T3=-UYx]
System::Console::WriteLine("Hello, world!"); |:!EHFr
} FcuEeca
%:yHMEG]'
}Z~pfm_S
C# (C Sharp) 8Sd?b5|G~
class HelloWorldApp $}^Rsv(
{ J"m%q\'
public static void Main() JS<e`#c&
{ AJJ%gxqGq
System.Console.WriteLine("Hello, world!"); >FK)p
} ,Y78Q
} Fm-q=3
sDz)_;;%
r4]hS`X~%
COBOL a!s.850@
IDENTIFICATION DIVISION. ymzPJ??!
PROGRAM-ID. HELLO-WORLD. d;@E~~o?B]
^sr:N5~z`
ENVIRONMENT DIVISION. C*Y
:w
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DATA DIVISION. \i&vOH'
8u7K$Q
PROCEDURE DIVISION. -oaG|
DISPLAY "Hello, world!". V1UUAvN7s
STOP RUN. >"PqQO
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?=pZmvQg
Common Lisp .:#_5K
(format t "Hello world!~%") C[Y%=\6'0
\4]zNV ~x
I_jM-/3b
DOS批处理 mmpr]cT@'k
@echo off hIE%-gZ/
echo "Hello, world!" $?CBX27AV
qr<-eJf
UH1S_:6
Eiffel ;r0|_mnf
class HELLO_WORLD 0|K/=dh5+
\E ? iw.}
creation C7XS6Nqu
make (}/.4xE
feature R-2FNl
make is aHVdClD2o
local hPEp0("
io:BASIC_IO JsWq._O{/
do W>t&N
!!io 1DI"LIL
io.put_string("%N Hello, world!") ?-RoqF
end -- make 1OfSq1G>v$
end -- class HELLO_WORLD c:`` Y:
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;?O883@r8
Erlang xqi*N13
-module(hello). b}}1TnS)
-export([hello_world/0]). ^R8U-V8:
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hello_world() -> io:fwrite("Hello, World!\n"). {{4p{
1b
%T_a
q|Pt>4c5?
Forth a@V/sh
." Hello, world!" CR f2SU5e2
%FR^[H]
qD=m{O8%_
Fortran 'o#J>a~!9L
WRITE(*,10) !txELA~24
10 FORMAT('Hello, World!') N.Wdi
STOP Ndug9j\2
END I[cV"BDa
nDoiG#N0
}?Yr>ZRi
HTML N8MlT \+r
<HTML> #?b^B~ #
<HEAD> zvK5Zxl
<TITLE> Hello World! </TITLE> 8KL_PwRX_f
</HEAD> Wc`J`.#
<BODY> =|WV^0=S'%
<p>Hello World!</p> 3A}nNHpN
</BODY> =p&'_a^$
</HTML> zb~MF_ &gE
Kt!IyIa;Ht
C^\*|=*\
HQ9+ X
gx2
H A 4W
!7"K>m<
5qtmb4R~
INTERCAL ,GXfy9x7U
PLEASE DO ,1 <- #13 ZR01<V
DO ,1 SUB #1 <- #238 R6WgA@Z|r
DO ,1 SUB #2 <- #112 k,*#I<($
DO ,1 SUB #3 <- #112 L@k;L
DO ,1 SUB #4 <- #0 *|,ykb>
DO ,1 SUB #5 <- #64 UmD-7Fd
DO ,1 SUB #6 <- #238 %&=(,;d
DO ,1 SUB #7 <- #26 ?3"D|
cS1
DO ,1 SUB #8 <- #248 gA6h5F)_
DO ,1 SUB #9 <- #168 ,p/b$d1p
DO ,1 SUB #10 <- #24 cf[u%{
6Y
DO ,1 SUB #11 <- #16 ^]lwd"$
DO ,1 SUB #12 <- #158 ]Re~V{uh
DO ,1 SUB #13 <- #52 1f pS"_}
PLEASE READ OUT ,1 J PzQBc5e
PLEASE GIVE UP s
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*_).UAP.
ch,Zk )y:_
Java D`~{[cv)\
public class Hello iP?ASqo{
{ 5q_OuZ/6
public static void main(String[] args) EDidg"0p
{ }MavI'
System.out.println("Hello, world!"); w[$nO#
}
b\0Q:
} .dKRIFo
yL3<X w|
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JSP | 8L`osg
<% %d[xr h
out.print("Hello, world!"); +S5_J&~
%> r(in]7
]20"la5
X,Q=n2X?3
MIXAL tId !C
TERM EQU 19 the MIX console device number `TlUJ]d)
ORIG 1000 start address "k1Tsd-
START OUT MSG(TERM) output data at address MSG =@jMx^A"
HLT halt execution %`\_l
MSG ALF "MIXAL" mv%:[+!
ALF " HELL" 4@mXtA
ALF "O WOR" }
@fu~V/
ALF "LD " M+R)P+
END START end of the program j.'"CU
f~" V
FvNSu"O~K1
Nuva GWqY$YT
<..直接输出..> =E~5&W7
Hello, world! V&+$Vq
3
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<..或者..> g\{! 21M
Mm7n?kb6
<. %1?V6&
// 不带换行 kdMS"iN8x
? "Hello, world!" CygV_q
v4>"p!_C
// 或者 BSu)O~s
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// 带换行 HFx"fT
?? 'Hello, world!' ^'I5]cRa
.> M7<#=pX&
@oc%4~zl
o`8+#+@f7
OCaml /e?ux ~f|
let main () = HJ1\FO9\
print_endline "Hello world!";; KJ^GUqVl
=U7D}n
hS-
9H%xZ(`vN
Pascal (DMnwqr
program Hello; hUhp2ibEs
begin j% USu+&
writeln('Hello, world!'); O9=H
[b
end. p,u<gJUL
KIBZQ.uG
4x{ti5Y0
Perl S1= JdN
#!/usr/local/bin/perl ODvpMt:+
print "Hello, world!\n"; jG(~9P7
No&[ \;
ApJf4D<V
PHP xOyL2
<?php ecZOX$'5
print("Hello, world!"); Ww
tQ>'R"
?> XhD fI
&
MirBJL
8Gg/M%wq9U
Pike |21hY
#!/usr/local/bin/pike RowiSW
int main() 2T%f~yQ^
{ ^?]H$e
write("Hello, world!\n"); ftH%, /,
return 0; TIhzMW\/K
} _%Ld
Ez
Eg29|)qsz
:aqskeT
PL/I EM
w(%}8w
Test: procedure options(main); Ahbu >LPk
declare My_String char(20) varying initialize('Hello, world!'); X|1YGZJ
put skip list(My_String); !K~$-jlT
end Test; @d^h/w
gI5nWEM0{
MVd
3*
Prolog C$ `Y[w
goal 3 DHA^9<q
write("hello,world!"). PQ"%Z.F"
D=sc41]
j"u)/A8*
Python M>gZVB,eP>
#!/usr/local/bin/python T<?BIQz(}
print "Hello, world!" +*{5ORq=
+mOtYfW
[IBk-opap
REXX KL"L65g&
say "Hello, world!"
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6jo&i
B]F7t4Y!
Ruby "I FGW4FnL
#!/usr/bin/ruby $cU/Im`
print "Hello, world!\n" R,+(JgJ
h:sG23@=
rK)
Scheme []!r|R3
(display "Hello, world!") YY~=h5$
(newline) `#8R+c=$
"]V|bz o0a
* .VZ(wX
sed (需要至少一行输入) Y(Ezw !a
sed -ne '1s/.*/Hello, world!/p' ~'.yhPog
Fh$&puF2
T5_Cu9>ax
Smalltalk RAbq_^Q
Transcript show: 'Hello, world!' bu&y w~
X2?_lZ[\
a`iAA1HJ
SNOBOL 1 ZFSz{
OUTPUT = "Hello, world!" "q/M8
END B&N&e