“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。 'fqX^v5n
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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》。 v%=@_`Ht
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以下是用不同语言写成的Hello World程序的几个例子: 007(k"=oV
Ada TBGN',,
with Ada.Text_Io; use Ada.Text_Io; _=wu>h&7
procedure Hello is B`)gXqBt
begin I)B+h8l72<
Put_Line ("Hello, world!"); K>tubLYh
end Hello; l=*60Ag\J~
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汇编语言 W@vt6v
QQnpy.`:/
x86 CPU,DOS,TASM <;R}dlBASW
MODEL SMALL ]f3eiHg*
IDEAL ;9+[t8Y)D
STACK 100H lD%Fk3
T;f`ND2fY
DATASEG r?w^#V
HW DB 'Hello, world!$' N'8u}WO
Y M<8>d
CODESEG 7j
]d{lD
MOV AX, @data +4N7 _Y
MOV DS, AX t8}R?%u
MOV DX, OFFSET HW VDyQv^=#
MOV AH, 09H vSOO[.=
INT 21H NM`5hd{
MOV AX, 4C00H :oYz=c
INT 21H -/y]'_a
END v `a:Lj
,#u"$Hz8p
j>{Dbl:#2
x86 CPU,GNU/Linux,NASM R7q\^Yzo
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax).
vG{+}o#
;Enter this into "hello.asm" then type: G` _LD+
;"nasm -f elf hello.asm" g?e$B}%
;"ld hello.o -o hello" t==CdCl
;"./hello" pn:) Rq0
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section .data ;data section declaration ``zgw\f[%
msg db 'Hello World!',0AH #GJ{@C3H8Q
len equ $-msg ;string length z^ai *
eWgqds
section .text ;code section declaration GQ@`qYLZ+
global _start ;entry point (start of execution) j.?c~Fh
_start: mov edx,len ;string length b-d{)-G{(
mov ecx,msg ;string start = 02$Dwr
mov ebx,1 ;file handle: stdout B=>VP-:
mov eax,4 ;sys_write V>$A\AWw
int 80h ;kernel system call ?F^$4:
}f~:>N#
mov ebx,0 ;return value + Z7 L&BI
mov eax,1 ;sys_exit MsaD@JY.y
int 80h ;kernel system call R;G"LT
7z_EX8^
P?#I9y7iP
x86 CPU,Windows,MASM32 _|'e Az
.386 StuQ}
.model flat,stdcall y.xyr"-Q
option casemap:none QgR3kc^7/
;Include 文件定义 8NE+G.:G
include windows.inc >{v,HOxl
include user32.inc ho'Ihep,L
includelib user32.lib L<}0}y
include kernel32.inc ^Uj\s /
includelib kernel32.lib t-;zgW5mwF
;数据段 iFJ1}0<(x
.data FyF./
szCaption db 'A MessageBox!',0 yobcAV`
szText db 'Hello,world!',0 Ug VLHwkvk
;代码段 x%hV5KW
.code Y-&SZI4H
start: u/I|<NAC,
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK XY_zFF
invoke ExitProcess,NULL nQtp 4
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 2`Ojw_$W7
end start =ObI
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1 +0-VRl
AWK >8*0"Q
BEGIN { print "Hello, world!" } ef Moi 'v
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BASIC NMM$
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传统版BASIC(例如GWBASIC): K&\
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W0&x0
10 PRINT "Hello, world!" __3s3YG
20 END NrVE[Z#
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或在提示符输入: T"b'T>Y
M MQ^&!H
?"Hello, world!":END mB.j?@Y%
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现代版BASIC(例如Quick BASIC): U5iyvU=UG
j_\?ampF
Print "Hello, world!" j&
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以下的语句在Quick BASIC中同样有效: e}PJN6"5
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? "Hello,world!" xpO'.xEs
=(3Yj[>st
PXx:JZsju
BCPL + n)_\@aQ
GET "LIBHDR" !jySID?q
JZo18^aD"'
LET START () BE [J{M'+a
$( zAZ+'9LB
WRITES ("Hello, world!*N") Hdn%r<+c
$) ev{;}2~V
k(]R;`f$W
n&n WY+GEo
Befunge j6JK4{
"!dlrow olleH">v .:b&$~<
, Fhk 8
^_@ >iKbn
O7Z?y*
Nuebxd
Brainfuck )Z"
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< zUIh^hbFf
+++++++++++++++.>.+++.------.--------.>+.>. 1^HmM"DD
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C ,(@J Ntx
#include <stdio.h> M SnRx*-
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int main(void) w Avnj
{ *6`};ASK
printf("Hello, world!\n"); ^E#i5d+'N
return 0; .XVW2ISv
} it#,5#Y:
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gB)Cmw*
C++ 9*<=K
#include <iostream> PsMp&~^
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int main() jR_o!n~5
{ #$^vP/"$
std::cout << "Hello, world!" << std::endl; Qf
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return 0; yU{Q`6u T
} <NYf !bx
v]?zG&Jh
"G[yV>pxv
C++/CLI [Nw%fuB
int main() ]Uu :t
{ 9sI&&Jg
System::Console::WriteLine("Hello, world!"); b)(rlX
} d$gT,+|vu
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C# (C Sharp) <Crbc$!OeX
class HelloWorldApp F*, e,s
{ GL^84[f-T
public static void Main() #1z/rUh`Cr
{ I"hlLP
System.Console.WriteLine("Hello, world!"); yW)&jZb"(
} 99YgQ Y]HO
} S%p.|!
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+I>V9%%vW_
COBOL }HKt{k&$
IDENTIFICATION DIVISION. Mjj5~by:
PROGRAM-ID. HELLO-WORLD. 1Uaj}=@M
5@-[[ $dk
ENVIRONMENT DIVISION. sq45fRAi
9{cpxJ
DATA DIVISION. xW.~Jt
_)%Sz"g^Ix
PROCEDURE DIVISION. ]=Dzr<*v
DISPLAY "Hello, world!". ?glK~G!i
STOP RUN. hR+\,P#G[
Re<@.d
|6O7_U#q
Common Lisp NE)Yd7m-
(format t "Hello world!~%") 2CY4nSKW
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#7r13$>!
DOS批处理 ]5',`~jkF
@echo off _g2"D[I%
echo "Hello, world!" *mjPNp'3{m
(Zz8 ldO
dQQ!QbI(.
Eiffel RA$%3L[A!
class HELLO_WORLD c2RQwtN|
5XzN%<_h9
creation d2U+%%Tdw
make nXT/zfS
feature Fxx-2(U
make is PY76;D*`
local 0Lx,qZ'
io:BASIC_IO E'cI} q
do o6/"IIso3
!!io <5]ufv
io.put_string("%N Hello, world!") gjL+8Rk
end -- make L6 IIk
end -- class HELLO_WORLD =fcM2O#$
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;W?mQUo:P8
Erlang d^+0=_[PmK
-module(hello). M px98xcO
-export([hello_world/0]). ^5n#hSqZ=M
PSHzB!
H=n
hello_world() -> io:fwrite("Hello, World!\n"). <;lwvO
ey@{Ng#
TFG0~"4Cz
Forth `V2doV)
." Hello, world!" CR HJ+Q7)
v83@J~
' +f(9/
Fortran X6Q\NJ"B
WRITE(*,10)
1}Th@Vq
10 FORMAT('Hello, World!') QJF_ "
STOP "DC L
Z
END ,v#O{ma
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PS3jCT
HTML 2 -pv
&
<HTML> Tvl"KVGm
<HEAD> 7DPxz'7):
<TITLE> Hello World! </TITLE> ^O
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</HEAD> pCC3r t(
<BODY> adWH';Q:
<p>Hello World!</p> Ke^9R-jP
</BODY> #+ Y%Bxf
</HTML> Jbn^G7vH<6
`d}t?qWS;F
#H]c/
HQ9+ 8/<+p? 3p>
H va2FgW`Bd+
,*.qa0E#W
J-z<&9
INTERCAL 6>gm!6`
PLEASE DO ,1 <- #13 3Dx@rW\
DO ,1 SUB #1 <- #238 (
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DO ,1 SUB #2 <- #112 9Cs/B*3 )b
DO ,1 SUB #3 <- #112 g=$nNQ
\6=
DO ,1 SUB #4 <- #0 1 T}jK^"
DO ,1 SUB #5 <- #64 NpH9},1i
DO ,1 SUB #6 <- #238 |pZ:5ta#
DO ,1 SUB #7 <- #26 ny}_^3
DO ,1 SUB #8 <- #248 _`lPLBr6
DO ,1 SUB #9 <- #168 TF?~vS%@P
DO ,1 SUB #10 <- #24 ~NTKWRaR
DO ,1 SUB #11 <- #16 Zg9VkL6Z6
DO ,1 SUB #12 <- #158 Py\/p Fvg
DO ,1 SUB #13 <- #52 5fy{!
PLEASE READ OUT ,1 >VppM `
PLEASE GIVE UP +E']&v$
iXLH[uhO;
c-* *~tb(
Java >c$3@$
public class Hello `LNKbTc[m
{ b$sT`+4q
public static void main(String[] args) N , ,[V
{ 30YH}b#B
System.out.println("Hello, world!"); Ln8r~[tVE<
} ]sI\.a
} u{cb[M
xYY^tZIV
Y,?kS
dS
JSP d~q7!
<% n-{.7
out.print("Hello, world!"); ?u5jXJ0L
%> P8[k1"c!
\A6}=
?e\u_3-9
MIXAL PPde!}T$
TERM EQU 19 the MIX console device number p]qz+Z/
ORIG 1000 start address kDG?/j90D
START OUT MSG(TERM) output data at address MSG /!sGO:
HLT halt execution Ya}}a
MSG ALF "MIXAL" a@-bw4SD
ALF " HELL" T^ - - :1
ALF "O WOR" 11%Zx3
ALF "LD " }:S}jo7
END START end of the program }l&y8,[:
6,!$S2(zT
]GDjR'[z
Nuva s@p:XO
<..直接输出..> {I/t3.R`
Hello, world! Rm}G4Pq
[Wxf,rW i
<..或者..> ;(rK^*`fO
Lb?0<
<. I%{ 1K+V/
// 不带换行 jW{bP_,"
? "Hello, world!" K1w:JA6(
`)>}b 3
// 或者 $h[Q}uW
>-y}t9[/
// 带换行 hW` o-'
?? 'Hello, world!' _p?s[r*
.> y(O~=S+<
wScr:o+K>L
wEw;],ur
OCaml B>[myx
let main () = ^\r{72!y
print_endline "Hello world!";; tF\_AvL_8
ANfy+@
iu$Y0.H@
Pascal nd[Ja_h
program Hello; l5D4?`|
begin Wiyiq )^
writeln('Hello, world!'); `/9I` <y
end. Cq[Hh#q
U;M! jj
Tfx-h)oP3
Perl C}ASVywc,1
#!/usr/local/bin/perl Qjd]BX;
print "Hello, world!\n"; Zy|u5J
f ~bgZ
YxGqQO36
PHP 3S1{r
)[j
<?php 4O:HT m
print("Hello, world!"); ,t!I%r
?> 1kD1$5
pktnX-Slt
\Y`psSf+
Pike Ua4P@#cU
#!/usr/local/bin/pike :
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int main() 9Q1w$t~Y
{ N,.awA{
write("Hello, world!\n"); EKS?3z%!
return 0; -J0OtrZ
} 2wa'WEx
Io tc>!
D&pp
<
PL/I 1tTY)Evf
Test: procedure options(main); kh8 M=
declare My_String char(20) varying initialize('Hello, world!'); h>p,r\X
put skip list(My_String); k5*Z@a
end Test; A|GsbRuy
7%G&=8tq
_#uRKy<`N
Prolog I}m>t}QRI_
goal YN~1.!F
write("hello,world!"). uJ8FzS>[V
BqM[{Kv
=dmxE*C
Python
@H^\PH?pp
#!/usr/local/bin/python 7K+eI!m.s
print "Hello, world!" m>?|*a,
N`qGwNT%G
lTVz'ys
REXX D_G]WW8
say "Hello, world!" F~~9/#
F%4N/e'L
%Aa_Bumf*:
Ruby 4q(,uk&R[
#!/usr/bin/ruby @Y<fj^]k
print "Hello, world!\n" }:[MSUm5
1#8~@CQ ::
,b?G]WQrHs
Scheme :a:m>S<~
(display "Hello, world!") AS0mMHJk
(newline) rB|4
jo<Gf 5
:XTxrYt28
sed (需要至少一行输入) &Aym@G|k?
sed -ne '1s/.*/Hello, world!/p' GaV OMT
.y0u"@iF
2/Y e<.#
Smalltalk (cI@#x
Transcript show: 'Hello, world!' wM#l`I
c(Fo-4K
lE!.$L*k
SNOBOL :9(w~bB9$
OUTPUT = "Hello, world!" L(X}37
END 8#4Gs Q"
y)TBg8Q
L`fT;2
SQL }WF6w+
create table MESSAGE (TEXT char(15)); xK4E+^ b
insert into MESSAGE (TEXT) values ('Hello, world!'); |CK/-UG}
select TEXT from MESSAGE; k^K%."INn
drop table MESSAGE; uKB V`I
:qV|rih_Q
jS5K:yx<
Tcl 7|Iq4@IT
#!/usr/local/bin/tcl E.-2 /'i
puts "Hello, world!" )}vUYTU1
tf1Y5P$
Mko,((>I1
TScript }uO2x@
? "Hello, world!" 4{b/Nv:b
AJ6O>Euq
l1%*LyD
Turing ZmI#-[/
put "Hello, world!" QkLcs6)R
NH1ak(zHW
$-6[9d-N
UNIX-style shell IVeA[qA0
程序中的/bin/sh可改为您使用的shell .Np!Qp1*
4 XGEw9`3
#!/bin/sh pBn;:
echo 'Hello, world!' Eh[NKgYL
C\|HN=2eh
k9c`[M
GUI Z'm( M[2K
1KJ[&jS ]
Delphi v[a4d&P
program HelloWorld; ZB5NTNf>
uses GB>T3l"
Dialogs; akwS;|SZ
begin h(^[WSa
ShowMessage('Hello, World!'); maV*+!\
end. a`Q-5*\;z
9Z3Vf[n5\
eO{2rV45O
Nuva WckWX]};S
<. pwF])uf*{\
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) Hq,NOP
.> eEeK ]8@
gV'=uz v
7'@~TM
Visual Basic wB<