“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。 RGOwm~a
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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》。 |]^! 4[!U
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以下是用不同语言写成的Hello World程序的几个例子: lsf?R'1
Ada nQMN2j M
with Ada.Text_Io; use Ada.Text_Io; -I<`!kH*
procedure Hello is 2sq<"TlQXI
begin (b5af_ c
Put_Line ("Hello, world!"); 3_:k12%p
end Hello; Ue%5
:Sdr
ax }Xsk_
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汇编语言 BGOI
%oQj^r!Xd
x86 CPU,DOS,TASM KO7cZME
MODEL SMALL s^<
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IDEAL P]^]
T}5
STACK 100H J]e&z5c
HX^
P9jXT
DATASEG =25"qJr
HW DB 'Hello, world!$' )Qp?LECrt
"[,XS`
CODESEG -JkO[IF
MOV AX, @data 0}!lN{m?
MOV DS, AX h<q``hn>
MOV DX, OFFSET HW T!r7RS
MOV AH, 09H T9yW# .
INT 21H F*u;'K
MOV AX, 4C00H
c7 -j
INT 21H
CQHlSV W
END 5}VP-04vh
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x86 CPU,GNU/Linux,NASM 2q bpjm
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ~CscctD{;
;Enter this into "hello.asm" then type: ?U[AE -*
;"nasm -f elf hello.asm" W@Wh@eSb;
;"ld hello.o -o hello" z9ZAY!Zhq]
;"./hello" ;E_{Zji_e
-0Ek&"=Z^
section .data ;data section declaration wq#3f#3V
msg db 'Hello World!',0AH 9 R1]2U$|
len equ $-msg ;string length 4B
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.Dz /MSl
section .text ;code section declaration 8X5XwFf}
global _start ;entry point (start of execution) D=$<Ex^p
_start: mov edx,len ;string length ml2HA4X&$Y
mov ecx,msg ;string start 8V=o%[t
mov ebx,1 ;file handle: stdout fq'Of
wT
mov eax,4 ;sys_write ~1oD7=WN
int 80h ;kernel system call {,ljIhc,
XhiC'.B_
mov ebx,0 ;return value kzT'
mov eax,1 ;sys_exit 3lqhjA
int 80h ;kernel system call X"sN~Q.0
~gD'up@$/
V8/o@I{U[
x86 CPU,Windows,MASM32 nEYJ?_55
.386 H?m2|.
.model flat,stdcall z m%\L/BF
option casemap:none t+tGN\q
;Include 文件定义 uVocl,?.L
include windows.inc y{<7OTA)
include user32.inc O1"!'Gk[!L
includelib user32.lib 195(Kr<5$
include kernel32.inc $qqusa}`K
includelib kernel32.lib jEadVM9
;数据段
ObUQ B+
.data i`X{pEKP+
szCaption db 'A MessageBox!',0 D3OV.G]`
szText db 'Hello,world!',0 uQlV zN.?
;代码段 idq= US
.code QK\z-'&n
start: }Z|a?J@CZm
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK
slbV[xR
invoke ExitProcess,NULL ~F-,Q_|-
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> p#w,+)1!d
end start "x)W3C%*S
C/JFg-r
ZJqmD
AWK IM+PjYJ
BEGIN { print "Hello, world!" } R!=XMV3$PH
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BASIC _cB~?c
传统版BASIC(例如GWBASIC): /[p4. FL
Ic*Q(X
10 PRINT "Hello, world!" u|C9[(
20 END f]EHDcC3X
vzU %5,
或在提示符输入: [,c>-jA5
20qT1!ju
?"Hello, world!":END PSE![whK
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现代版BASIC(例如Quick BASIC): Ni`qU(I'|
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Print "Hello, world!" 8`D_"3j3g\
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c
以下的语句在Quick BASIC中同样有效: mEGMe@37
j'W)Nyw$[
? "Hello,world!" _>*"6
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JGtdbD?Fw
BCPL zK&`&("4C
GET "LIBHDR" Je/R'QP^8
1DX=\BWp
LET START () BE TS;MGi0`}
$( y~\z_') <>
WRITES ("Hello, world!*N") q&vr;fB2
$) j<c_*^/'9
;tHF$1!J
tP\Utl-0
Befunge 5o,82Kti
"!dlrow olleH">v B\Uj
, gP}M\3-O
^_@ +mY(6|1
p(Sfw>t(
~[C m#c
Brainfuck ^^v!..V]J
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< uW]n3)7<I
+++++++++++++++.>.+++.------.--------.>+.>. a^22H
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C o,29C7Ii
#include <stdio.h> @'S-nn,sO
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int main(void) 9]Y@eRI<
{ UZyo:*yB
printf("Hello, world!\n"); O_E[FE:+
return 0; {AZW."?
} az w8BK
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Z'\_YbB
C++ @A:Xct
#include <iostream> ?vXy7y&4
n@*NQ`(_
int main() [P^ .=F
{ aJub("
std::cout << "Hello, world!" << std::endl; 6s6[sUf=l&
return 0; qLR)>$
} YcIk{_N3
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t({:TQ
C++/CLI nF)|oA
int main() GR"Jk[W9
{ !nTq"d%(W
System::Console::WriteLine("Hello, world!"); ~($h9*\
} 6`4=!ZfI
j}y"
V< J~:b1V
C# (C Sharp) k}/0B
class HelloWorldApp ,ujoGSx}
{ 5@i/4%S
public static void Main() %zWtPxAf
{ C\1Dy5
System.Console.WriteLine("Hello, world!"); =!Ok079{[
} )s!x)< d;
} ]]Wa.P~]O
xC|7"N^/
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COBOL SA'
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IDENTIFICATION DIVISION. hse$M\5
PROGRAM-ID. HELLO-WORLD. Up8#Nz
T
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ENVIRONMENT DIVISION. 5{{u #W%=
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DATA DIVISION.
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8}4V$b`Z
PROCEDURE DIVISION. 9] l7j\L
DISPLAY "Hello, world!". NJ3b Oq
STOP RUN. (}'0K?
Pj^6.f+
a6[bF
Common Lisp [&e}@!8O`
(format t "Hello world!~%") MwiT1sB~
#*5A]"k
n:HF&j4C,
DOS批处理 xmbkn}@A
@echo off =*}|y;I
echo "Hello, world!" R`Q9|yF\
J PmW0wM
h T4fKc7P
Eiffel [gU z9iU
class HELLO_WORLD EyozhIV
x#U?~6.6
creation WG9x_X&XJ
make B+,Z 3*
feature 41$7P[M;
make is \!`*F:7]-
local gJ :Z7b
io:BASIC_IO eQA89 :j,
do xCGvLvFn
!!io zcDVvP
io.put_string("%N Hello, world!") st~f}w@
end -- make p,U.5bX
end -- class HELLO_WORLD H;|^z@RB<
D.X%wJ8
O]`CSTv'_
Erlang j$BM$q/c
-module(hello). F8.Fp[_tM
-export([hello_world/0]). >AJtoJ=j
jrG@
+" }
hello_world() -> io:fwrite("Hello, World!\n"). IX$ $pdQ
flnoK%wi
V9][a
Forth |K7JU^"OQ
." Hello, world!" CR <Xv]Ih?@f`
hK?uGt
d?
^~?VD
Fortran v:eVK!O
WRITE(*,10) [Cvo^cC
10 FORMAT('Hello, World!') hK3?m.>"g
STOP .(`#q@73
END [T.kwQf4$
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Jk 0;<2j
HTML u<:RSg
<HTML> "4zTP!Ow
<HEAD> }"E?#&^
<TITLE> Hello World! </TITLE> _=}Efy7
</HEAD> t /1KKEZM
<BODY> ',v
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<p>Hello World!</p> V\Cu|m&HI
</BODY> [PdatL2
</HTML> )lE]DG!
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z1*8 5?
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H 5fjmr
fMy7pXa_
9ssTG4Sa
INTERCAL ">j}!n
8J
PLEASE DO ,1 <- #13 C5$1K'X@
DO ,1 SUB #1 <- #238 i.C+{QH
DO ,1 SUB #2 <- #112 "o+<
\B~
DO ,1 SUB #3 <- #112 I5
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DO ,1 SUB #4 <- #0 9m/v^
DO ,1 SUB #5 <- #64 p$0G EYwM
DO ,1 SUB #6 <- #238
(0bvd
DO ,1 SUB #7 <- #26 Lp.,:z7
DO ,1 SUB #8 <- #248 $<OX\f%
DO ,1 SUB #9 <- #168 ] K3^0S/
DO ,1 SUB #10 <- #24 TW"
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DO ,1 SUB #11 <- #16 n>"0y^v
DO ,1 SUB #12 <- #158 ]%!:'#
DO ,1 SUB #13 <- #52 M| :wC
PLEASE READ OUT ,1 _Y?p =;
PLEASE GIVE UP nRzD[3I
%A|9=x*
F2saGpGH
Java R%=u<O
public class Hello 1kEXTs=,
{ IVjH.BzH9
public static void main(String[] args) 9@9(zUS|
{ ,6uON@
System.out.println("Hello, world!"); |#^wYZO1U
} T@ (MSgp9
} @FKm_q
Z%E;*R2+:>
4V@raI-
JSP n6Je5fE
<% i 3?=up!
out.print("Hello, world!"); dkVF
%> dDK4I3a
W2?6f:
/zJDQ'k0
MIXAL JR] /\(
TERM EQU 19 the MIX console device number l 8qCg/ew
ORIG 1000 start address '[Ap/:/UY
START OUT MSG(TERM) output data at address MSG .7 6T<j_
HLT halt execution d}2tqPy a
MSG ALF "MIXAL" !<BJg3
ALF " HELL" gi\2bzWkbX
ALF "O WOR" S~X&^JvT
ALF "LD " ~)xg7\k
END START end of the program *-'u(o
T a8;
1zqIB")s>
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<..直接输出..> ZfsM($|a
Hello, world! 7}>Zq`]~
AqnDsr!
<..或者..> b&BkT%aA(G
,j E'd'$
<. T5H[~b|9-
// 不带换行 T;!: A
? "Hello, world!" }-4@EC>
RdaAS{>Sk
// 或者 Jmg<mjq/G
Gmi ^2?Z(
// 带换行 R!{^qHb
?? 'Hello, world!' Zq1ZrwPF
.> B?n
6o|8
O=m_P}K
v%a)nv
OCaml utOATjB.z
let main () = pn"TFapJA
print_endline "Hello world!";; Sp/t[\,'
%EV\nwn6
\vwsRT 1
Pascal eYNu78u
program Hello; 6bPoC$<Z
begin w1U2cbCr/
writeln('Hello, world!'); wzX(]BG
end. w(Jf;[o
pV:;!+
E/+H~YzO
Perl "}ibH{$lM
#!/usr/local/bin/perl B}S!l>.z
print "Hello, world!\n"; >2vUFq`H
QiO4fS'~W
9|BH/&$
PHP d ? Uj3G
<?php <KY \sb9
print("Hello, world!"); @2(7
ZxI
?> [l#
8}dy
[u*-~(
0ndk=V
Pike ,jH<i.2R
#!/usr/local/bin/pike 3T1t !q4/5
int main() m{#?fR=9
{ 0SS,fs<w3
write("Hello, world!\n"); J n>3c
return 0; P'}WmE'B}F
} 2:[
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