“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。 +%UfnbZ
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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》。 <V5(5gx
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以下是用不同语言写成的Hello World程序的几个例子: >DP9S@W
Ada Uz} #.
with Ada.Text_Io; use Ada.Text_Io; AU OL?st
procedure Hello is AD_")_B|i
begin zN:VT&
Put_Line ("Hello, world!"); @/9#Z4&d0
end Hello; I~-W4{
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汇编语言 |k\4\aLj
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x86 CPU,DOS,TASM g=XvqD<
MODEL SMALL yT.h[yv"w
IDEAL -Wd2FD^x
STACK 100H
a`
s2 z
FAX|.!US*p
DATASEG sf<S#;aYqn
HW DB 'Hello, world!$' iVTC"v
; :4&nJ*qG
CODESEG P<ElH3J`
MOV AX, @data %M]%[4eC
MOV DS, AX u!hY
bCB
MOV DX, OFFSET HW gFizw:l
MOV AH, 09H GL-v</2'U
INT 21H MHeUh[%(
MOV AX, 4C00H Qz=F
nR
INT 21H
U*!q@g_
END ^a^bsKW
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7 XE&[o
x86 CPU,GNU/Linux,NASM Z-z^0QO
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). (~q.YJ'
;Enter this into "hello.asm" then type: r'/&{?Je/
;"nasm -f elf hello.asm" /99S<U2ej
;"ld hello.o -o hello" YcOPqvQ
;"./hello" O]3$$uI=QE
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section .data ;data section declaration =.a}
msg db 'Hello World!',0AH RtO3!dGT.
len equ $-msg ;string length [
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section .text ;code section declaration 8eq*q
global _start ;entry point (start of execution) c<bV3,
_start: mov edx,len ;string length
U*(/eEtd-
mov ecx,msg ;string start >HNBTc=~t
mov ebx,1 ;file handle: stdout uatY:GSR
mov eax,4 ;sys_write )eIC5>#.
int 80h ;kernel system call `@TWZ%f6
d9e_slx
mov ebx,0 ;return value Q]$gw,H"6
mov eax,1 ;sys_exit v3O+ ;4
int 80h ;kernel system call 7^)8DwAl
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0)F.Y,L
x86 CPU,Windows,MASM32 Z.'j7(tu
.386 QOiPDu=8z
.model flat,stdcall v=5H,4UMA
option casemap:none iMjoatt
;Include 文件定义 9^;Cz>6s
include windows.inc G5*"P!@6
include user32.inc 2^ uP[
includelib user32.lib JYbsta
include kernel32.inc ,Ei!\U^)
includelib kernel32.lib D+#OB|&Dn
;数据段 Cm@rXA/
.data }?G([s56
szCaption db 'A MessageBox!',0 S!WG|75B
szText db 'Hello,world!',0 #O 2g]YH
;代码段 "o_s=^U
.code
C 2t]
start: X})5XYvA*
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ^Gi9&fS,
invoke ExitProcess,NULL 3PkVMX
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Znr6,[U+q
end start 2_T2?weD5
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t2x2_;a
AWK Nm$Ba.Rg
BEGIN { print "Hello, world!" } abMB-
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#zmt x0
BASIC $40G$w
传统版BASIC(例如GWBASIC): 'h}(> %
w'[JfMu P
10 PRINT "Hello, world!" d*$L$1S
20 END (A(j.[4a
s.|OdC>U =
或在提示符输入: r&%TKm^/
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?"Hello, world!":END R7\T.;8+
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现代版BASIC(例如Quick BASIC): hgg8r#4q
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Print "Hello, world!" + Vv+<M
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以下的语句在Quick BASIC中同样有效: 5Ve`j,`=<
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? "Hello,world!" *kYJwO^
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BCPL '4KN
GET "LIBHDR" 'p FK+j
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LET START () BE <)$&V*\
$( jOUM+QO
WRITES ("Hello, world!*N") F(O"S@
$) -kF8ZF
h*
72 f/#
^>Vl@cW0uz
Befunge ?e{hidg
"!dlrow olleH">v $E/N
, h+rW%`B
^_@ C5Vlqc;
d`gKF
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Brainfuck ^(kmF UV,Z
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 0Q7|2{
+++++++++++++++.>.+++.------.--------.>+.>. ?K\r-J!Y
ZH)Jq^^RI
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C lvAKL>qX
#include <stdio.h> E3LEeXcLS
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int main(void) &w!(.uDO
{ 8]K+,0m6
printf("Hello, world!\n"); u>ZH-nw O
return 0; F MX^k
} ,ZI#p6
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redMlHM
C++ jl>jy6T
#include <iostream> 0fGt7 "Q
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int main() tWyl&,3?1
{ oeYUsnsbi
std::cout << "Hello, world!" << std::endl; 2=
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return 0; cYgd1
} ' hDs.Wnu
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C++/CLI ."Kp6s `k
int main() gy1R.SN
{ 9Y:Iha`$w
System::Console::WriteLine("Hello, world!"); b_&:tE--]
} k4d;4D?
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C# (C Sharp) MQe|\SMd
class HelloWorldApp .sjv"D"
{ tmd{Gx}c
public static void Main() C{:U<q
{ q`VkA
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System.Console.WriteLine("Hello, world!"); 1Ep7CV-n}
} I5*<J n
} m\oxS;fxWi
uZTbJ3$$
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COBOL &^`[$LtYd
IDENTIFICATION DIVISION. mlYkn
PROGRAM-ID. HELLO-WORLD. \sAkKPI
o@ m7@$7
ENVIRONMENT DIVISION. !K-qoBqKM
;qO3m-(d
DATA DIVISION. c|@OD3w2lM
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PROCEDURE DIVISION. AJ>$`=
DISPLAY "Hello, world!". 'rNLh3
STOP RUN. Wf3{z
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Common Lisp 6?ky~CV
(format t "Hello world!~%") Fh/psd
Q\W)}
27i-B\r
DOS批处理 l_s#7 .9$
@echo off L&KL]n
echo "Hello, world!" v.ow`MO=;
d}aMdIF!e
~W-l|-eogz
Eiffel f%3MDI
class HELLO_WORLD ay
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creation s",G
w]8
make @Gw.U>"!C
feature ]Q,&7D
Ah
make is w`EC6ZN
local GTi=VSGqF
io:BASIC_IO >;]S+^dXY
do Hh%"
!!io i%GiWanG
io.put_string("%N Hello, world!")
!<HF764@`
end -- make 1g,Ofr
end -- class HELLO_WORLD B}P!WRNmln
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Erlang Ci 'V
-module(hello). 7xM4=\~OG
-export([hello_world/0]). :]4s;q:m
^I9U<iNIL
hello_world() -> io:fwrite("Hello, World!\n"). ^F
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mo9(2@~<
Forth @HTs.4
." Hello, world!" CR *Kpw@4G
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ecx_&J@D
Fortran /3.;sS]B
WRITE(*,10) 7yJE+o'
10 FORMAT('Hello, World!') l*(L"]
STOP pI.~j]*:{
END ^hsr/|
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jd2 p~W
HTML ]N,'3`&::
<HTML> "!&
o|!2
<HEAD> 5R)IL2~
<TITLE> Hello World! </TITLE> ~Y{]yBGoF
</HEAD> Lr20xm
<BODY> 8QMMKOui\
<p>Hello World!</p> <Qr*!-Kc6
</BODY> elR1NhB|p
</HTML> Bp5%&T k
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INTERCAL }8ESp3~e_
PLEASE DO ,1 <- #13 _+)n}Se
DO ,1 SUB #1 <- #238 mKE'l'9A_
DO ,1 SUB #2 <- #112 RameaFX8
DO ,1 SUB #3 <- #112 Unansk
DO ,1 SUB #4 <- #0 dNCd-ep
DO ,1 SUB #5 <- #64 's5H_ah
DO ,1 SUB #6 <- #238 K47.zu
DO ,1 SUB #7 <- #26 mI\[L2x
DO ,1 SUB #8 <- #248 >l=jJTJ;q
DO ,1 SUB #9 <- #168 rLY I\
DO ,1 SUB #10 <- #24 h#Mx(q
DO ,1 SUB #11 <- #16 C?MKbD=K
DO ,1 SUB #12 <- #158 A/&u/?*C
DO ,1 SUB #13 <- #52 \acGSW
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PLEASE READ OUT ,1 FI[]#
PLEASE GIVE UP ,-kz\N@.
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Java =*.S<Ko)
public class Hello /cVZ/"
{ vR pO0qG
public static void main(String[] args) Q<DXDvL
{ >s!k"s,
System.out.println("Hello, world!"); Y9
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} asE.!g?
}
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fh66Gn,
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JSP Gm> =s
<% R&:Qy7"
out.print("Hello, world!"); &|h9L' mr
%> nEP3B'+
_mQj=
/1m+iM^V
MIXAL il"pKQF
TERM EQU 19 the MIX console device number
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ORIG 1000 start address |Bv,*7i&
START OUT MSG(TERM) output data at address MSG <[T{q
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HLT halt execution $VP\Ac,!
MSG ALF "MIXAL" 2f{a||
ALF " HELL" Kx BvL[/
ALF "O WOR" pcQkJF
ALF "LD " jwuSne
END START end of the program {9) HB:
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Nuva }IdkXAB.
<..直接输出..> W<TfDEEa
Hello, world! fN21[Jv3
c>! ^\
<..或者..> \4
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<. rmFcSolt,f
// 不带换行 R:ecLbC
? "Hello, world!" knfmJUT
JV8*;n%}-
// 或者 XeslOsHh
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// 带换行 gKmF#Z"\
?? 'Hello, world!' W^c /l*>v
.> %Na`\`L{F
Okd. ~
Q.'2v%i
OCaml ah(k!0PV
let main () = dDAl n+
print_endline "Hello world!";; ,|;\)tT
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S\GxLW@x
Pascal k'sPA_|
program Hello; _EP~PW#J
begin FF7?|V!Q
writeln('Hello, world!'); eLV[U
end. tO D}&
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Perl r%>7n,+o
#!/usr/local/bin/perl OHnsfXO_V
print "Hello, world!\n"; glkH??S
rt?*eC1b+Z
aZ|S$-}
PHP MX+gc$Y
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<?php ?(}~[
print("Hello, world!"); h&!$ `)
?> U'Y,T$Q
ttt4h
!9.\A:G
Pike +1\t0P24
#!/usr/local/bin/pike G_WHW(8
int main() W@%g_V}C*
{ T{N8 K K
write("Hello, world!\n"); _Kh8
<$h
return 0; B1%xU?
} 9[
o$/x}
EN,}[^Z
'z=d&K
PL/I 6(Ntt
Test: procedure options(main); nQg_1+
declare My_String char(20) varying initialize('Hello, world!'); \NKw,`/
put skip list(My_String); Q)8I(*
end Test; H:WuMw D4
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9C!b
f \
Prolog <^942y-=
goal N|
P?!G-=
write("hello,world!"). V?jWp$
#/_ VY.
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Python F[)tg#}@G
#!/usr/local/bin/python g&8-X?^Q
print "Hello, world!" 6?JvvS5
q]s_ hWWv
t\v~ A0
REXX [l7n"gJ~
say "Hello, world!" +Z=y/wY
f|3LeOyz
vfc,{F=Q
Ruby 'e$8
IZm
#!/usr/bin/ruby 2p58_^l
print "Hello, world!\n" Q~rE+?n9F
41Ab,
u%=2g'+)_
Scheme 8_O?#JYi
(display "Hello, world!") HXPq+
(newline) >LPIvmT4D?
~8-xj6^
3BF3$_u)o
sed (需要至少一行输入) CAN1~
sed -ne '1s/.*/Hello, world!/p' nV8iYBBym
J: I@kM
h}DKFrHW;-
Smalltalk X/m~^
Transcript show: 'Hello, world!' ^f,%dM=i=
Blj<|\igc
1xO-tIp/
SNOBOL =Tfm~+7nE
OUTPUT = "Hello, world!" r$x;rL4
END T#[#w*w/
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