“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。 *}=W wG
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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》。 IYPI5qCR
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以下是用不同语言写成的Hello World程序的几个例子: dXQWT@$y!E
Ada 7EUaf;d^
with Ada.Text_Io; use Ada.Text_Io;
|H49FL
procedure Hello is n"vI> _|G
begin cA,xf@itp
Put_Line ("Hello, world!"); ,0O!w>u_]J
end Hello; lU3wIB
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Q}]un]]Zt
汇编语言 4}`MV .
S]+}Zyg
x86 CPU,DOS,TASM M_DkjuR
MODEL SMALL q_)DY
f7V}
IDEAL [a2/`ywdV
STACK 100H ?g2K&
7P]pk=mo
DATASEG QaV*}W
HW DB 'Hello, world!$' ,KWeW^z'7
[;}c@
CODESEG ?Eed#pb_
MOV AX, @data ? IWS
MOV DS, AX H.e@w3+h
MOV DX, OFFSET HW 1k`!w}
MOV AH, 09H ^;e`ZtcI
INT 21H /on p<u
MOV AX, 4C00H Fwtwf{9I
INT 21H ~Km8-b(&
END $vd._j&
X9>ujgK
YN^8s
x86 CPU,GNU/Linux,NASM HukHZ;5
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). GZo^0U,;
;Enter this into "hello.asm" then type: 49yN|h;c!
;"nasm -f elf hello.asm" /TdTo@
;"ld hello.o -o hello" 7u; B[qH
;"./hello" 5 m:nh<)#
G.;<?W
section .data ;data section declaration 6_7d1.wv9
msg db 'Hello World!',0AH - >2ej4C
len equ $-msg ;string length E[y?\{
H!N,PI?rn
section .text ;code section declaration 3!I8J:GZ:
global _start ;entry point (start of execution) x!J L9
_start: mov edx,len ;string length &,+ZNA`P
mov ecx,msg ;string start )+J?(&6
mov ebx,1 ;file handle: stdout %rYt; 7B
mov eax,4 ;sys_write Mg].#
int 80h ;kernel system call iV%%VR8b
!eW<4jYB
mov ebx,0 ;return value a2z o_h2R
mov eax,1 ;sys_exit %(i(ZW "
int 80h ;kernel system call m@ ~HHwj
/*[a>B4-q
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x86 CPU,Windows,MASM32 8w$cj'
.386 z&eJ?wb
.model flat,stdcall jU=)4nx
option casemap:none FU<rE&X2:
;Include 文件定义 }k%>%xQ.
include windows.inc }rN"H4)
include user32.inc @Q'5/q+
includelib user32.lib d 1z
include kernel32.inc Ofn:<d
includelib kernel32.lib L^22,B
0
;数据段 >DDQ7
l
.data $>+-=XMVB
szCaption db 'A MessageBox!',0 Mc.KLz&,FC
szText db 'Hello,world!',0 ~"(1~7_
;代码段 `g #\ Ws
.code Y?> S.B7
start: dJkTHmw
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK :=* -x
invoke ExitProcess,NULL V[%r5!83H
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 0pu'K)Rb
end start !R-UL#w9W'
BR|dW4\
HtMlSgx,8>
AWK oY{*X6:6<
BEGIN { print "Hello, world!" } o)NWsUXf
:x_l"y"
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BASIC {T$;BoR#O
传统版BASIC(例如GWBASIC): x9uA@$l^|
d;f,vN(
10 PRINT "Hello, world!" 0FXM4YcrJO
20 END bw@tA7Y
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或在提示符输入: SN11J+
lcih
[M6z
?"Hello, world!":END d(k`Yk8
i+2J\.~U#G
现代版BASIC(例如Quick BASIC): y};qo'dlt
9,,1\0-T*
Print "Hello, world!" OuX/BMG
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以下的语句在Quick BASIC中同样有效: Cu>pql<O
k(Ow.nkb
? "Hello,world!"
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BCPL 3b|.L
Jz+
GET "LIBHDR" D 4@=+
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5&>q
LET START () BE fY>\VY$>
$( !\p-|51
WRITES ("Hello, world!*N") KExfa4W 3{
$) A1i-QG/6
DRw%~
6~^+</?
Befunge 7%JXVP}A
"!dlrow olleH">v W0R6<-
1
, Y~Zg^x2
^_@ lVMAab
B} &C
h
h$lY,7
Brainfuck E]Kd`&^}
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 7m8L!t9
+++++++++++++++.>.+++.------.--------.>+.>. ofS9h*wrJ
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C _oR6^#5#
#include <stdio.h> 5o&L|7]
S&|$F2M
int main(void) 5-n N8qs
{ @w@rW
}i0
printf("Hello, world!\n"); wjpkh~qo
return 0; <OpiD%Ctx
} u K 8r
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NJn~XCq
C++ gJ2R(YMF
#include <iostream> RL($h4d9
9n$$D;
int main() I4u'b?*
je
{ i;yz%Ug
std::cout << "Hello, world!" << std::endl; -^C;WFh8)
return 0; )00#Rrt9
} K{HdqmxL.I
bvZmozbD
@Yy=HV
C++/CLI [4"%NY
int main() n1$p
esr
{ 2_U H, n
System::Console::WriteLine("Hello, world!"); ?jy^WF`
} cpf8f i
~ 5`Ngpp
3"%:S_[
C# (C Sharp) )\p@E3Uxf
class HelloWorldApp
T<P4+#JK
{ AlGD .K
public static void Main() ,v(G2`Z
{ owQLAV
System.Console.WriteLine("Hello, world!"); 2Ask]
} vrh}X[JEw'
} <PXA`]x~
g`\Vy4w
|qfnbi-\
COBOL D`iWf3a.
IDENTIFICATION DIVISION. L[<MBgFKv
PROGRAM-ID. HELLO-WORLD. T7&itgEYG/
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ENVIRONMENT DIVISION. @ -g^R4e<
*j8w"
4
DATA DIVISION. &:w{[H$-
!i{@B
PROCEDURE DIVISION. nbhx2@Teqe
DISPLAY "Hello, world!". n0nkv[
STOP RUN. 9v0f4Pbxm
UI |D?z<
/TS>I8V!
Common Lisp 3)I v8mA
(format t "Hello world!~%") 2L ~U^
lYU_uFOs\
lAV6z%MmM
DOS批处理 /9W-;l{=z
@echo off y%p&g
echo "Hello, world!" vBq2JJAl
P6;L\9=H<
luAhyEp
Eiffel {P(IA2J'S
class HELLO_WORLD zaR~ fO
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creation [K%Jt
make [JsQ/|=z
feature lLoFM
make is uflp4_D
local 2=u5N[*
io:BASIC_IO 4d[:{/+Q
do KG)Y{-Ao
!!io *T*MLD]Q
io.put_string("%N Hello, world!") H|==i2V{
end -- make UP%X`
end -- class HELLO_WORLD ^P(HX
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mbSJ}3c"
Erlang J1&G1\G|s=
-module(hello). %;9wToyK>
-export([hello_world/0]). |\Jpjm)?
2~~Q NWN
hello_world() -> io:fwrite("Hello, World!\n"). F6YMcdU
sm/l'e
;%hlh)k$
Forth MvJEX8M
." Hello, world!" CR X2T)]`@
<c^m|v
f`P%aX'cBQ
Fortran DYbkw4Z,
WRITE(*,10) 3>/Yku)t
10 FORMAT('Hello, World!') h5.u W8
STOP `QAotSO+
END jcv3ES^
\*1pFX#
EivZI<<a
HTML jja9:$#
<HTML> D@FJVF7c
<HEAD> <JDkvpckx.
<TITLE> Hello World! </TITLE> Z3T:R"l;
</HEAD> |Zncr9b
<BODY> eB^:+h#A_
<p>Hello World!</p> 5(tOQ%AQ
</BODY> IgQW 5E#
</HTML> !$f@j6.
f
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ES<"YF
HQ9+ bY&s$Ry3"
H #*1\h=bzmW
"PLZZL$+
qGr(MDLc
INTERCAL KKl8tI\u~
PLEASE DO ,1 <- #13 >Ix)jSNLgo
DO ,1 SUB #1 <- #238 9^3y\@ m
DO ,1 SUB #2 <- #112 aZ@Ke$jD
DO ,1 SUB #3 <- #112 Z,_yE*q
DO ,1 SUB #4 <- #0 I(
G8cK
DO ,1 SUB #5 <- #64 \{P(s:
DO ,1 SUB #6 <- #238 X#Ajt/XQ
DO ,1 SUB #7 <- #26 V<?t(_Y
DO ,1 SUB #8 <- #248 sq\oatMw[
DO ,1 SUB #9 <- #168 j^ex5A.&
&
DO ,1 SUB #10 <- #24 RWz^
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DO ,1 SUB #11 <- #16 *GTCVxu
DO ,1 SUB #12 <- #158 v.c2(w/P
DO ,1 SUB #13 <- #52 }| (KI
PLEASE READ OUT ,1 KPs5? X
PLEASE GIVE UP jx+%X\zokA
$:t;WXc.<
r,EIOcz:
Java X-e)w
public class Hello W{?7Pn?1`
{ *R0Ae 4
public static void main(String[] args) 8 U B?X
{ =VH, i/@
System.out.println("Hello, world!"); 9Psy$
} m+s^K{k}
} $
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iA
KaZ$!JfT
3z!\Z[
JSP BJ @tUn
<% w`UB_h#Bl
out.print("Hello, world!"); Tmg~ZI:MW
%> .3t[M0sd
vLXN{ ]
`/Zi=.rr
MIXAL r}+U1l3#2
TERM EQU 19 the MIX console device number i
o 3qG6
ORIG 1000 start address +Y0Wiwr'
START OUT MSG(TERM) output data at address MSG dl6d!Nz*
HLT halt execution 1ZOHyO
MSG ALF "MIXAL" |l
03,dOF
ALF " HELL" Q+U}
ALF "O WOR" %mAgE\y25
ALF "LD " ?*tb|AL(R
END START end of the program .u>IjK^
pBG(%3PpW
`s Az1/N
Nuva x%jJvwb^|
<..直接输出..> Sdy\s5
Hello, world! /0uZ(F|>I
#e((F,1z
<..或者..> Mp:tcy,*
weEmUw Z
<. rLw,?
// 不带换行 Ont4-AP
? "Hello, world!" .>Gq/[c0|
AhZ8B'Ee
// 或者 s"*zyLUUo
k+f!)7_
// 带换行 :[ F`tDL
?? 'Hello, world!' S>Z V8
.> ?a+tL'D[
&~29 %Ns
*Sm$FMWQ
OCaml I!%T!B540
let main () = Em N0K'x
print_endline "Hello world!";; Hc ]/0:
K{%}kUj>
%K@D{)r_^
Pascal -n?}L#4%8
program Hello; ++W_4 B!
begin
n4h@{Xg
writeln('Hello, world!'); }xJ9EE*G/
end. Uvgv<OR`_
x00"d$!
AkrUb$ }
Perl yQ?N*'}$
#!/usr/local/bin/perl )q&=x2`
print "Hello, world!\n"; s?@{
HF"
v
\
K'+GK S7.
PHP *Em 9R
<?php [ Lt1OdGl
print("Hello, world!"); Jtnuo]{R
?> Uc/MPCqZ
'j6PL;~c
?g+0S@{i $
Pike 8l-+
4~mH
#!/usr/local/bin/pike WBFG_])
int main() u>Z;/kr
{ QKDY:1]
write("Hello, world!\n"); HaXlc8
return 0; >:!TfuU^R
} rj&
AdxCP\S&
!([Q1r{u
PL/I $`W.9
Test: procedure options(main); U$@p"F@P
declare My_String char(20) varying initialize('Hello, world!'); )sWdN(E3
put skip list(My_String); axW3#3#`
end Test; -yHVydu=
=/&ob%J)9]
4#MvOjA5[
Prolog 2cY7sE068
goal PsU.dv[
write("hello,world!"). POwJhT
QijEb
$m] ~d6
Python n*(Vf'k
#!/usr/local/bin/python cVv+,l4V0
print "Hello, world!" RbKAB8
Mt (wy%{zK
.%j(!
REXX ?sWPx!tU
say "Hello, world!" r+-KrO'
Xm`jD'G
R|
[mp%Q
Ruby Y[k%<f
#!/usr/bin/ruby 4vq,W_n.hQ
print "Hello, world!\n" vi')-1Y
KM
w'oP{=y[
1H`T=:P?
Scheme 6*u#^">,<
(display "Hello, world!") t33/QW
r
(newline) *9M 5'
'L4@|c~x
mO;X>~K
sed (需要至少一行输入) t<mT=(zt*
sed -ne '1s/.*/Hello, world!/p' t$^1A1Ef
[,e[~J`C
R
h zf.kp
Smalltalk vU0j!XqE
Transcript show: 'Hello, world!' OQ;'Xo
Oaf!\z}
I9O!CQCTt
SNOBOL {Tb(4or?=b
OUTPUT = "Hello, world!" ,TPNsz|Q
END R`q*a_
mk.:V64 >;
+a_eNl,
SQL ":E
7#9
create table MESSAGE (TEXT char(15)); :M)B#@ c=
insert into MESSAGE (TEXT) values ('Hello, world!'); 6C@,&2<yK
select TEXT from MESSAGE; g
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drop table MESSAGE; Jy?s'tc
K-(k6<h
,6:ya8vB
Tcl (yIl]ZN*
#!/usr/local/bin/tcl $o"Szy
puts "Hello, world!" V1 T?T9m
(1p[K-J)r
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