“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。 Ibz9juY
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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》。 H/{@eaV
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以下是用不同语言写成的Hello World程序的几个例子: iQ" LIeD
Ada j;.P
with Ada.Text_Io; use Ada.Text_Io; h|]cZMGo
procedure Hello is b+a+OI D
begin KfjWZ4{v
Put_Line ("Hello, world!"); ^gcB+
end Hello; w=XIpWl
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汇编语言 4vbGXb}!
<5G(Y#s/?
x86 CPU,DOS,TASM sAc1t`
MODEL SMALL bIGcszWr
IDEAL *{VC<<`
STACK 100H ufk2zL8y
.hH_1Mo8
DATASEG !AXLoq$SY
HW DB 'Hello, world!$' 4}DFCF%B
F?'
CODESEG R{c~jjd
MOV AX, @data :PBFFLe
MOV DS, AX /lR*ab
MOV DX, OFFSET HW vk
E]$4P[$
MOV AH, 09H O^!ds
INT 21H w\i]z1
MOV AX, 4C00H C5^WJx[
INT 21H s3sRMB2
END nam]eW
;@S'8
,oH\rrglf
x86 CPU,GNU/Linux,NASM HXT"&c|
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). =7e!'cF[
;Enter this into "hello.asm" then type: zlP{1z;nV
;"nasm -f elf hello.asm" |a03SZx
;"ld hello.o -o hello" lZRO"[<
;"./hello" "y~*1kBu
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section .data ;data section declaration Vj4 h#NN$
msg db 'Hello World!',0AH .'o=J`|
len equ $-msg ;string length Khd A;bF
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section .text ;code section declaration :q3w;B~
global _start ;entry point (start of execution) uxn+.fA
_start: mov edx,len ;string length ftMlm_u
mov ecx,msg ;string start GXm#\)
mov ebx,1 ;file handle: stdout f|(9+~K/7&
mov eax,4 ;sys_write s:lH4B
int 80h ;kernel system call Q&PWW#D
R"XycXn_$
mov ebx,0 ;return value ! (lF#MG}
mov eax,1 ;sys_exit 517"x@6Q
int 80h ;kernel system call &I=o1F2B)
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R\ 8[6H
x86 CPU,Windows,MASM32 423%K$710
.386 |pZ7k#%
.model flat,stdcall <w}^Z}fpk&
option casemap:none UH0l8ixc
;Include 文件定义 ?J+jv
include windows.inc u-n$%yDS
include user32.inc $hk_v~zM
includelib user32.lib *WzPxQ_
include kernel32.inc 2&s(:=
includelib kernel32.lib N8r+Q%ov
;数据段 {Xpjm6a7
.data M>RLS/r>d
szCaption db 'A MessageBox!',0 |M<R{Tt}nf
szText db 'Hello,world!',0 `+KLE(]vyH
;代码段 ou|3%&*"
.code T8T,G4Q
start: )086u8w )y
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK y fS
invoke ExitProcess,NULL :SF8t` 4`
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> MS|1Q@S9
end start iu+H+_
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AWK ^=cXL
BEGIN { print "Hello, world!" } /xA`VyHO
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BASIC .d)H2X
传统版BASIC(例如GWBASIC): |@>Zc5MY$
MhFj>t
10 PRINT "Hello, world!" qP%[nY
20 END T5-'|+
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或在提示符输入: eLN(NSPoS
E&W4`{6K4
?"Hello, world!":END .W-=V zWX
Z q}Cl'f
现代版BASIC(例如Quick BASIC): Me,AE^pgL'
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Print "Hello, world!" t9
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以下的语句在Quick BASIC中同样有效: zpxyX|
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? "Hello,world!" P}p6{
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5U l=Nv]
BCPL b WZX
GET "LIBHDR" %eqL)pC]
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LET START () BE p7)b@,
$( n)teX.ck)
WRITES ("Hello, world!*N") [SLBA_d
$) &_c5C
QW%BKF!
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Befunge le`_
"!dlrow olleH">v 8|#p D4e
, [W,maTM"
^_@ OK9D4
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Brainfuck =G2A Ufn
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< AJH-V
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+++++++++++++++.>.+++.------.--------.>+.>. #6<9FY#
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C u
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#include <stdio.h> U~8 oE_+
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int main(void) bMw)>4
{ &ExYul
printf("Hello, world!\n"); Q:B :
return 0; wMB<^zZmv
} pYs"Y;%
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C++ q,a|lH
#include <iostream> 4RqOg1
cy6P=k*
int main() '
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{ ^25[%aJI
std::cout << "Hello, world!" << std::endl; ^\<1Y''
return 0; 1vQj` F
} b|*A%?m
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{
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C++/CLI ~WJEH#
int main() |f~p3KCfV
{ r,x;q
System::Console::WriteLine("Hello, world!"); bewi.$E{
} )nS;]7pB@
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GIDC'
C# (C Sharp) ds4)Nk4%O
class HelloWorldApp <c{RY.1[
{ 7oDr`=q1]r
public static void Main() 7b,u|F
{ >w?O?&Q$
System.Console.WriteLine("Hello, world!"); J~:/,'Ea
} mYN|)QVKy
} Cj}1 )qWq
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6;GL>))'
COBOL Oav^BhUO
IDENTIFICATION DIVISION. %97IXrE
PROGRAM-ID. HELLO-WORLD. TUiXE~8=
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ENVIRONMENT DIVISION. t HPC
g4I&3 M
DATA DIVISION. CV4r31w
vpUS(ztvs
PROCEDURE DIVISION. /9WR>NUAO
DISPLAY "Hello, world!". XWbe|K!e
STOP RUN. b'^-$
UPPDs "
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Common Lisp Sj}@5 X6 C
(format t "Hello world!~%") y^:g"|q
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DOS批处理 OXzJ%&h
@echo off Ni GK|Z
echo "Hello, world!" BRV /7ao="
8Hs>+Udl
OlFls 8#>
Eiffel Ni{(=&*=
class HELLO_WORLD }
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.dV o[m;
creation e0*',
make \p.Byso,
feature ID5?x8o#k
make is HH2*12e
local +?(2-RBd
io:BASIC_IO yc4mWB~gyU
do -";'l@D=
!!io ~c :e0}
io.put_string("%N Hello, world!") xK0VWi
end -- make $[[6N0}*:
end -- class HELLO_WORLD =2)5_/9au
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Erlang PQXyu1
-module(hello). 0: h;ots'
-export([hello_world/0]). x-U:T.+{
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hello_world() -> io:fwrite("Hello, World!\n"). N*lq)@smq
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'9*wr*
Forth |I7P0JqP
." Hello, world!" CR Yiu)0\ o
Fx0K.Q2Y0
q uv`~qn
Fortran /pFg<
WRITE(*,10) TpZ) wC
10 FORMAT('Hello, World!') rc*3k
STOP +sE8 1B
END 8S@ ~^D
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HTML }&rf'E9
<HTML> aAu
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<HEAD> |vTirZP
<TITLE> Hello World! </TITLE> f>waFu-
</HEAD> _7]5Q
<BODY> w^p
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<p>Hello World!</p> 11X-X
</BODY> -CT?JB
</HTML> 6O$OM
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H a%;$l_wVT:
.4_EaQ;jX
k2<VUeW5
INTERCAL &{x5 |$SD
PLEASE DO ,1 <- #13 #?!)-Q%
DO ,1 SUB #1 <- #238 n|SsV
DO ,1 SUB #2 <- #112 @w,-T@nAW
DO ,1 SUB #3 <- #112 I@+dE V`Lf
DO ,1 SUB #4 <- #0 "]*0)h_
DO ,1 SUB #5 <- #64 S=krF yFw
DO ,1 SUB #6 <- #238 exTpy
DO ,1 SUB #7 <- #26 eO(VSjo'`
DO ,1 SUB #8 <- #248
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DO ,1 SUB #9 <- #168 9!_`HE+(XJ
DO ,1 SUB #10 <- #24 sA3 4`ZAa
DO ,1 SUB #11 <- #16 D
gY2:&0
DO ,1 SUB #12 <- #158 lb{*,S
DO ,1 SUB #13 <- #52 N:d`L+tcc
PLEASE READ OUT ,1 GLnj& Ve
PLEASE GIVE UP %OfaBv&
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%Ni)^
Java i?qS8h{
public class Hello 9d#-;qV
{ HR\yJt
public static void main(String[] args) 6}n_r}kNR
{ f/*Xw {s#
System.out.println("Hello, world!"); #XQEfa
} ysGK5kFz
} r$=iM:kERC
L:XnW1(Or
x}AWWmXv
JSP y*vs}G'W
<% HS="t3
out.print("Hello, world!"); ;5PXPpJ
%> -XkCbxZ
ojT TYR{
8nt:peJ$+
MIXAL Y71io^td~j
TERM EQU 19 the MIX console device number +sQ=Uw#e
ORIG 1000 start address ,kpkXK
START OUT MSG(TERM) output data at address MSG }/SbmW8(1
HLT halt execution dE.R$SM
MSG ALF "MIXAL" ,wlFn
ALF " HELL" [Sg1\UTl
ALF "O WOR" GBHv| GO
ALF "LD " Fv.}w_
END START end of the program x`WP*a7Fk]
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Nuva r_@;eh
<..直接输出..> fp.,MIS
Hello, world! Al5E
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<..或者..> w;&J._J
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<. 5T:e4U&
// 不带换行 HIk5Q'e k
? "Hello, world!" ymrmvuh
#:3ca] k
// 或者 =A$5~op%
/v
U$62KA
// 带换行 ]- " )r
?? 'Hello, world!' <wW#Wnc ]
.> P5P:_hr
l"W9uS;\T
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OCaml 3PIZay
let main () = r.lH@}i%n
print_endline "Hello world!";; p3&/F=T;)
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K9njD#/
Pascal *Cz>r}W
program Hello; /a[i:Oa#
begin blpX_N
writeln('Hello, world!'); r?nvJHP
end. @mSdksB/L
X#EMmB!
ONH!ms(kb
Perl [ %cW ?@
#!/usr/local/bin/perl s{(aW5$!s
print "Hello, world!\n"; cV\(Z6u
xdFm-_\-
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PHP Ur6UE2
<?php 8`v+yHjG
print("Hello, world!"); !trt]?*-
?> TD'Rv Tpl
*T-+Pm-Cq
FIL?nkYEO
Pike (0 /,R
#!/usr/local/bin/pike 5z~rl}`v
int main() Iojyku\W.
{ IDQ@h`"B
write("Hello, world!\n"); x{6KsYEY
return 0; ,)TtI~6Q
} x_pS(O(C
JR8 b[Oj.S
c@wSv2o$
PL/I .vE=527g)
Test: procedure options(main); ^I4'7]n-
declare My_String char(20) varying initialize('Hello, world!'); #` Q3Z}C
put skip list(My_String); m2F2
end Test; 2&MIt(\-
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##+|zka!U
Prolog IFcxyp
goal 8n+&tBq1
write("hello,world!"). L.ScC
]VtVw^ ir
mk(O..)2
Python 4y\qJw)~U
#!/usr/local/bin/python W/!M
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print "Hello, world!" R4"*<%1
@}eEV[Lli
+;^UxW
REXX xP#vAR
say "Hello, world!" a8ya5EO
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KJn@2x6LP
Ruby Ir&rTGFN
#!/usr/bin/ruby q,`"Z)97
print "Hello, world!\n" FJXYKpY[r
I
L]uw
@32~#0a
Scheme pRWEBd1U
(display "Hello, world!") $mdmuUIy-3
(newline) R[KF${X4
zmH8^:-x
jBZlNEw
sed (需要至少一行输入) QZ?# ixvJ
sed -ne '1s/.*/Hello, world!/p' ;wo
POvxZU
8=QOp[w
Smalltalk /kV3[Rw+
Transcript show: 'Hello, world!' z"#iG&>a,
2-!OflkoM0
Z/-9G
SNOBOL mApn[)?tv
OUTPUT = "Hello, world!" Tzr_K
END KYE)#<V}@
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_gU:!:}
SQL 8Na.H::cZ
create table MESSAGE (TEXT char(15)); <;Q1u,Mc
insert into MESSAGE (TEXT) values ('Hello, world!'); 9{[I|
select TEXT from MESSAGE; TL&