“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。 0?L$)T-B
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 4a \+o]
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以下是用不同语言写成的Hello World程序的几个例子: Umwg
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Ada ; o@`l$O
with Ada.Text_Io; use Ada.Text_Io; H=BR
-
procedure Hello is
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begin ~V-
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Put_Line ("Hello, world!"); }]GK@nn7
end Hello; oJu4vGy0
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rMFZ#38d
汇编语言 Y(yJ|y&
i\z0{;f|GX
x86 CPU,DOS,TASM PaeafL65=
MODEL SMALL Pk]9.e1_
IDEAL Ay6rUN1ef
STACK 100H ?#c@Ag%
`V_/Cz_}D
DATASEG :3*oAh8|
HW DB 'Hello, world!$' %mvx}xV
NGQIoKC
CODESEG ]{U*+K%,J
MOV AX, @data 6)<o O(
MOV DS, AX -Izg&u &
MOV DX, OFFSET HW jW$f(qAbm
MOV AH, 09H hgr ,v"
INT 21H
qhf/B)
MOV AX, 4C00H <0qY8
INT 21H ]G&\L~P
END K:50?r_-6
#YVDOR{z
cCKda3v!O
x86 CPU,GNU/Linux,NASM R#bV/7Ol
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 0H]9$D
;Enter this into "hello.asm" then type: v=WDs#"
;"nasm -f elf hello.asm" 9U1!"/F
;"ld hello.o -o hello" g#3x)97Z
;"./hello" |wn LxI
os ud
section .data ;data section declaration i1&noRGl
msg db 'Hello World!',0AH e/D\7Pf
len equ $-msg ;string length ,ZW.P`
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section .text ;code section declaration (xJBN?NRO
global _start ;entry point (start of execution) "MP{z~Mmj
_start: mov edx,len ;string length \`9|~!,Ix7
mov ecx,msg ;string start { 3P!b|V>
mov ebx,1 ;file handle: stdout 9>, \QrrH
mov eax,4 ;sys_write *<5lx[:4/x
int 80h ;kernel system call iZ;jn8
sh3}0u+
mov ebx,0 ;return value Ec/+ 9H6g
mov eax,1 ;sys_exit BU\NBvX$
int 80h ;kernel system call JkEQ@x
-;.fU44O[#
}(O
kl1
x86 CPU,Windows,MASM32 $4)guG)
.386 m,fr?d/;
.model flat,stdcall Qn cS&
option casemap:none E0Xu9IW/A
;Include 文件定义 S?WUSx*N
include windows.inc ArKrsI#H-
include user32.inc zMg^2{0L
includelib user32.lib OU=IV;V{
include kernel32.inc Dp'af4+%$
includelib kernel32.lib ;b2>y>?[
;数据段 RaqrVC
.data T U6EE
szCaption db 'A MessageBox!',0 ~a)20
szText db 'Hello,world!',0 r|$g((g
;代码段 KiHAm|,
.code 7cQw?C
start: ht!:e>z&4
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !}m8]&
invoke ExitProcess,NULL }E_zW.{!
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> j+v)I=
end start X,Q(W0-6$u
0drc^rj
!
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AWK M/ \~
BEGIN { print "Hello, world!" } BNLall
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v3]M;Y\
BASIC #Z5~a9rO
传统版BASIC(例如GWBASIC): "lMWSCas
PkO(Y!
10 PRINT "Hello, world!" 6n4S$a
20 END nI` 1@vB&
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或在提示符输入: '?[msX"aqa
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?"Hello, world!":END 5PySCGv
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现代版BASIC(例如Quick BASIC): 3 g!h4?^
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Print "Hello, world!" )v.FAV:
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以下的语句在Quick BASIC中同样有效: 'c]&{-w<i
z#ET-[I
? "Hello,world!" /;J;,G`?
? -tw *2+
iWsIc\!+,
BCPL Oms`i&}"}
GET "LIBHDR" q\G@Nn^
-rrg?4
LET START () BE gNBI?xs`p
$( r4'Pf|`u
WRITES ("Hello, world!*N") T~d';P
$) Z%{2/mQ
e
hGC
N=
:DP{YL|x
Befunge @:8|tJu8b
"!dlrow olleH">v ^B>6!
, L.(k8eX
^_@ 6&cU*Io@
\^D`Hvg
AUd}) UR
Brainfuck q2Dg~et
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< GH!#"Sl8Z
+++++++++++++++.>.+++.------.--------.>+.>. F.6SX (x
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C bEJZh%j!
#include <stdio.h> }s9J+m
Sx7xb]3XI"
int main(void) NH!!.Z"
{ W@LR!EW)
printf("Hello, world!\n"); \wP$"Z}j
return 0; #=c%:{O{4R
} \qPrY.-
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0Oq1ay^
C++ mNzZ/*n:
#include <iostream> e78}
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int main() nfEk ,(:
{ xae7#d0
std::cout << "Hello, world!" << std::endl; o@-cT`HP
return 0; V"z0]DP5~
} 9lwg`UWl,
}#@LZ)]hK
]cK@nq)
C++/CLI 4D5)<3N=d'
int main() Y-9F*8<
{ 16U@o>O
System::Console::WriteLine("Hello, world!"); -rBj-4|"
} c_i;'
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\ U_DTI
C# (C Sharp) _{8boDX#
class HelloWorldApp .T2I]d
{ \hVFK6
public static void Main() 9hQ{r 2
{ ;F-kE4w
System.Console.WriteLine("Hello, world!"); s5 BV8 M
} ~PHG5?X
} }0o0 "J-$
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%$Uw]a
COBOL 'DPSM?]fA
IDENTIFICATION DIVISION. F~6[DqF\|
PROGRAM-ID. HELLO-WORLD. C\Rd]P8\
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ENVIRONMENT DIVISION. OmW|\d PU
u&:jQ:[
DATA DIVISION. c|XnPqo;f
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PROCEDURE DIVISION. BRT2 =}A
DISPLAY "Hello, world!". (plOV)
STOP RUN. V3S`8VI
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(b
Common Lisp J5-^@JYK
(format t "Hello world!~%") Mh\c +1MFs
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lEJTd3dMi
DOS批处理 3UEh%Ho
@echo off
eL*Edl|#
echo "Hello, world!" KR63W:Z\'
fjf\/%
L=>N#QR7
Eiffel *Co+UJjT
class HELLO_WORLD -c. a7
b^1!_1c
creation _?8T'?-1
make NB[b[1 Ch
feature y_w4ei
make is l)zS}"F,
local on~rrSK
io:BASIC_IO
gBN;j
do 7_LE2jpC,5
!!io fu/v1~X
io.put_string("%N Hello, world!") [>fE{~Y
end -- make iqpy5
end -- class HELLO_WORLD j`bOJTBE
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n#iL[
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Erlang F C"dQ
-module(hello). Y,{X v
-export([hello_world/0]). &( Z8G~h4
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hello_world() -> io:fwrite("Hello, World!\n"). P+JYs
;G?_^ 0
Z^b1i`v
Forth R lv|DED$
." Hello, world!" CR !,]_tw>R
|&7l*j(\
G'%mmA\
Fortran <7qM;)g
WRITE(*,10) $8b/"Qm
10 FORMAT('Hello, World!') qzXch["So
STOP F"_SCA?9?
END zKR_P{W>^
Y|Z*|c.4OK
n/?_]
HTML Vki3D'.7N
<HTML> UGIyNMY
<HEAD> J::dY~@
<TITLE> Hello World! </TITLE> AV?*r-vWL.
</HEAD> \JX8`]|&
<BODY> h4]yIM`8d
<p>Hello World!</p> nlKWZYv
</BODY> l+@NjZGm<
</HTML> 3SDw-k
]krOPM/
Al!P=h
HQ9+ 1L3L!@
H &BP%~
M!,WU[mP
\'shnzs
INTERCAL wzF"^CJ
PLEASE DO ,1 <- #13 Nt/>RCh
DO ,1 SUB #1 <- #238
Y.ic=<0H
DO ,1 SUB #2 <- #112 +Oo>V~
DO ,1 SUB #3 <- #112 x.!%'{+{
DO ,1 SUB #4 <- #0 `6'fX[j5
DO ,1 SUB #5 <- #64 ^;M!u8 [
DO ,1 SUB #6 <- #238 i-$]Tg
DO ,1 SUB #7 <- #26 60*=Bs%b
DO ,1 SUB #8 <- #248 dQt]r
DO ,1 SUB #9 <- #168 8uNq353
DO ,1 SUB #10 <- #24 !pgkUzMW
DO ,1 SUB #11 <- #16 |iU#!+zY
DO ,1 SUB #12 <- #158 `Q,03W#GJ%
DO ,1 SUB #13 <- #52 a
*>$6H;
PLEASE READ OUT ,1 'z@(,5
PLEASE GIVE UP ?EdF&^[3rD
wTG6>l ]H
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Java P)4SrqW_
public class Hello >%t"VpvR
{ R'He(x
public static void main(String[] args) GC.
{ -B'<*Y
System.out.println("Hello, world!"); sdrALl;w|
} &W*9'vSm.
} 7aS`SF
X180_Kt2
^2=11
JSP TX$j-TM'
<% @#;2P'KL
out.print("Hello, world!"); t
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%> Y}QtgZEt
a=Pl3Uo
du Pzt
MIXAL U2seD5I
TERM EQU 19 the MIX console device number w(0's'
ORIG 1000 start address h?jKq2`
START OUT MSG(TERM) output data at address MSG ar }F^8Ku
HLT halt execution +TL5yuA
MSG ALF "MIXAL" ,iV|^]X3$/
ALF " HELL" O1Vs!
ALF "O WOR" s"s^rC
ALF "LD " XX+%:,G
END START end of the program KFx4"f%
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Nuva Qt`}$]
<..直接输出..> DHQavHqbZ
Hello, world! ly9.2<oz}L
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<..或者..> [7oU =
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<. K_;'-B
// 不带换行 Jsde+G,N
? "Hello, world!" -pvF~P?8U
:+06M@
// 或者 [f 4Nq \i
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// 带换行 'GcN9D
?? 'Hello, world!' 8Th{(J_
.> ,t2M ur
7,X5]U&A<x
s|FfBG
OCaml bLuAe
EA
let main () = .'aW~WR
print_endline "Hello world!";;
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u 6A!Sw
j\@Ht~G
Pascal k/srT<
program Hello; +es|0;Z4yP
begin 9}G.F r
writeln('Hello, world!'); O!xul$9
end. N;gI %6
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u)J&3Ah%
Perl GI']&{
#!/usr/local/bin/perl cHP~J%&L
print "Hello, world!\n"; <a_ytSoG1
I54`}Npp
4Cm+xAXG
PHP Vh=10Et
<?php cc37(=oKL
print("Hello, world!"); .d/e?H:
?> ,%Sf,h?"^
Qx<86aKkF
w`ebZa/j
Pike ?y"=jn
#!/usr/local/bin/pike .Aj4?AXWc
int main() H+lBb$
{ [ 'aSPA
write("Hello, world!\n"); `?P)RS30
return 0; m}`!FaB #
} nz+k ,
nymro[@O~
)a99@`L\P
PL/I T3H\KRe6
Test: procedure options(main); ol#|
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declare My_String char(20) varying initialize('Hello, world!'); t:$^iUrx
put skip list(My_String); Ct@O S227x
end Test; % XvJJ
;fiH=_{us
9IfeaoZZ4q
Prolog %OT} r
goal #z$g1\v
write("hello,world!"). Cg#@JuwHa
u?xXZ]_u-
L JW0UF|
Python $OGTHJA
#!/usr/local/bin/python s\/$`fuhx
print "Hello, world!" JA!?vs
{@E(p4W
S~GL_#a
REXX >tGl7Ov
say "Hello, world!" &-R(u}m-F
mqrV:3}
7j,u&%om
Ruby 7^bde<0
#!/usr/bin/ruby J) I|Xot
print "Hello, world!\n" R-[t4BHn
L@VIC|~E
SyL:=NZ
Scheme 7gxC
xfL$
(display "Hello, world!") 8r{:di*
(newline) BU;o$"L
VUd=|$'J
9=o;I;I
sed (需要至少一行输入) ?hfyQhR
sed -ne '1s/.*/Hello, world!/p' F4:giu ht
^s.necg0
x b6X8:
Smalltalk p Xap<T
Transcript show: 'Hello, world!' M?[~_0_J
4;;K1< 1
P[q 'Y^\
SNOBOL JnodDH ?
OUTPUT = "Hello, world!" md
S`nhb
END I_"KhBM
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hAi`2GP.
SQL f?Am)
create table MESSAGE (TEXT char(15)); -5X*y4#
insert into MESSAGE (TEXT) values ('Hello, world!'); a]]>(Txc
select TEXT from MESSAGE; F'Lav?^
drop table MESSAGE; =CqZ $
LFwRTY,G
$_5a1Lq1
Tcl D^-6=@<3KD
#!/usr/local/bin/tcl [Z-S0
puts "Hello, world!" a@?2T,$
+-$Hx5
q{RH/. l
TScript $C.;GU EQ
? "Hello, world!" 6R=dg2tKT
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