“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。 /l$x}
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 ofvR0yV
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以下是用不同语言写成的Hello World程序的几个例子: 9A.RD`fg
Ada m5Bf<E,c
with Ada.Text_Io; use Ada.Text_Io; bR\7j+*&
procedure Hello is XS<>0YM
begin [W[{
4 Xu
Put_Line ("Hello, world!"); bS_#3T
end Hello; ~.a"jYb7A}
ggso9ZlLu+
WBe0^=x
汇编语言 4GYi'
lExQp2E
x86 CPU,DOS,TASM WQ|:TLQ
MODEL SMALL J^!;$Hkd
IDEAL ;vx5 =^7P
STACK 100H 1gI7$y+?
-I< >Ab
DATASEG Vk5Z[w a
HW DB 'Hello, world!$' C@M-_Ud>Q
8%rD/b6`
CODESEG hpdI5
MOV AX, @data K_Y-N!h
MOV DS, AX
01kRe
MOV DX, OFFSET HW rPxRGoR
MOV AH, 09H _&KqmQ8$7
INT 21H Im]@#X
MOV AX, 4C00H ]8G 'R-8}
INT 21H }\_.Mg^y
END K#"=*p,
,p2UshOmd
Q*M# e
x86 CPU,GNU/Linux,NASM _3IT3mb2n
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Vax g
;Enter this into "hello.asm" then type: !-I,Dh-A
;"nasm -f elf hello.asm" DE13x*2
;"ld hello.o -o hello" I8#2+$Be+@
;"./hello" e=amh
t}t(fJHY`
section .data ;data section declaration "2%z;!U1
msg db 'Hello World!',0AH ?0qVyK_1
len equ $-msg ;string length s 6Wp"V(
BR|!ya+_2
section .text ;code section declaration S"bN9?;#u
global _start ;entry point (start of execution) nz 10/nw
_start: mov edx,len ;string length R'c*CLaiE
mov ecx,msg ;string start q~{)
{t;
mov ebx,1 ;file handle: stdout c
r=Q39{
mov eax,4 ;sys_write gC7!cn
int 80h ;kernel system call `Fqth^RK?p
G':3U
mov ebx,0 ;return value 5Ds[?
mov eax,1 ;sys_exit [@$ SLl^Y
int 80h ;kernel system call ]:%DDlRb
?G{0{c2
>t+ ENYb
x86 CPU,Windows,MASM32 &61U1"&$ R
.386 lZzW-
%K
.model flat,stdcall )@]%:m!ER
option casemap:none 7w
)?s@CD
;Include 文件定义 d<c 29Y
include windows.inc
Omd;
include user32.inc ss^a=?~
includelib user32.lib RhYe=Qh4{p
include kernel32.inc +%5 L2/n7
includelib kernel32.lib <H64L*,5'7
;数据段 :8S;34Y;
.data &X4anH>O
szCaption db 'A MessageBox!',0 @52#ZWy
szText db 'Hello,world!',0 w4
yrAj
2
;代码段 S2X@t>u-
.code 1$cl "d`~
start: KXKT5E$
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK jN6V`Wh_
invoke ExitProcess,NULL \zd[A~!
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> n%Oi~7>
end start ^^q&VL
%:26v
(Cr
AWK
bPsvoG
BEGIN { print "Hello, world!" }
zAB= >v
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q<AnWNheE
BASIC bRo<~ rp%
传统版BASIC(例如GWBASIC): 7i5B=y7b
P"c@V,.
10 PRINT "Hello, world!" `IN!#b+Eo
20 END ?K$&|w%{3
FNGa4
或在提示符输入: WcmX"{
&5
7c!)
?"Hello, world!":END aEf3hB* ~
fW= N
现代版BASIC(例如Quick BASIC): p22AH%
Q#MB=:0{
Print "Hello, world!" 4!sK>l!
&l6@C3N$
以下的语句在Quick BASIC中同样有效: .2I?^w&j+
CU=sQfE
? "Hello,world!" D5gj*/"
Z+B*V)a=
|s3;`Nxu7
BCPL m|NZ093d
GET "LIBHDR" u|KjoO
Na@bXcz)
LET START () BE Z?P^Y%ls
$( jCY~Wc
WRITES ("Hello, world!*N") j_C"O,WS
$) e&sH<hWR
1zRYd`IPoq
!B`z|#
Befunge I<}% L
V
"!dlrow olleH">v (iKJ~bJ
, GR|\OJ<2
^_@ B=KrJ{&!
G=y~)B}
}NDl~5
Brainfuck GVhqNy
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< KHx2$*E_
+++++++++++++++.>.+++.------.--------.>+.>. P'wo+Tn*
5mamWPw
L#SW!
C #ss/mvc3
#include <stdio.h> )4rt-_t<
GZO:lDdA
int main(void) :E}y
Pcw
{ F'M X9P
printf("Hello, world!\n"); 4prJ!k
return 0; (uX?XX^
} {.Qv1oOa
4T@+gy^.
a~Dk@>+P>
C++ `h'+4
#include <iostream> 0n:cmML)D
`M~R4lr
int main() OUWK
{ YPx+9^)
std::cout << "Hello, world!" << std::endl; 4AN8Sx(
return 0; xJZaV!N|
} UIDeMz
yH('Vl
wa<k%_# M
C++/CLI 3qTr|8`s
int main() t
U}6^yc
{ )W= O~g
System::Console::WriteLine("Hello, world!"); _-BP?'lN
} lU
62$2
D\M"bf>q1
$'KQP8M+
C# (C Sharp) c:7V..
class HelloWorldApp Dtd~}-_Q
{ 6):1U
public static void Main() N!ihj:,
{ LEM%B??&5z
System.Console.WriteLine("Hello, world!"); a4UwhbH
} ='jT
5Mg
} j^=Eu r/
MWme3u)D
frUs'j/bZ
COBOL #czTX%+9(e
IDENTIFICATION DIVISION. D\G.p |9=
PROGRAM-ID. HELLO-WORLD. e".=E;o`
S3M!"l
ENVIRONMENT DIVISION. #OPEYJ;*9d
gy@=)R/~
DATA DIVISION. eP"B3Jw
|8f }3R 9
PROCEDURE DIVISION. 8#;=>m%
DISPLAY "Hello, world!". @<eKk.Y?+
STOP RUN. /-v ;
G@/iK/>5|`
\dCGu~bT
Common Lisp #f"eZAQ {
(format t "Hello world!~%") Nl[&rZ-&
S3/%;=|
HnArj_E
DOS批处理 <Q(E {c3"
@echo off ^2}HF/
echo "Hello, world!" .;g kV-]
s.p>
?U
$M)SsD~
Eiffel K ,NmDc^
class HELLO_WORLD ]7}!3 m
EF!J#N2
creation 1N(#4mE=
make zHA::6OgPN
feature 8!|vp7/
make is V\m"Hl>VIU
local 3}FZg
w .
io:BASIC_IO (=uT*Cb
do la<.B^
!!io Pw<' rN8''
io.put_string("%N Hello, world!") 2`*w*
end -- make ?:3hp2k<
end -- class HELLO_WORLD @=l6zd@
\{`^Q+<
gdeM,A|
Erlang <L8|Wz
-module(hello). !b_(|~7Lc
-export([hello_world/0]). }?,YE5~
;*Vnwt A
hello_world() -> io:fwrite("Hello, World!\n"). jUM'f24
0F-{YQr>
Ic4#Tk20i
Forth *VhEl7
." Hello, world!" CR
YA,~qT|
mP\V.^
ZN#b5I2Pf
Fortran l S,Jo/T@
WRITE(*,10) }P?e31@:
10 FORMAT('Hello, World!') )KE
STOP 7qyPI
END ,B'=$PO%
aGC3&c[Wx
hUi@T}aA|
HTML d~qQ_2M[G
<HTML> =_#b
.8K
<HEAD> GqxnB k1
<TITLE> Hello World! </TITLE> >fWGiFmlk
</HEAD> iGhvQmd(/*
<BODY> 7ivo Q
<p>Hello World!</p> H9)n<r
</BODY> I;NW!"pU
</HTML> KV$&qM.
h,R Isq;`
<b
H*f w
HQ9+ :41Y
H kyAN O
X3G593ts
3GF67]
INTERCAL Uo >aQk
PLEASE DO ,1 <- #13 )nO ^Ay
DO ,1 SUB #1 <- #238 9k ~8n9
DO ,1 SUB #2 <- #112 r%f Q$q>
DO ,1 SUB #3 <- #112 qm!cv;}c1
DO ,1 SUB #4 <- #0 ={%'tv`
DO ,1 SUB #5 <- #64 `z'8"s
DO ,1 SUB #6 <- #238 x9>$197
DO ,1 SUB #7 <- #26 t$n Jmfzm
DO ,1 SUB #8 <- #248 5kw
K%
DO ,1 SUB #9 <- #168 1"Oe*@`pV
DO ,1 SUB #10 <- #24 {.$7g8]I
DO ,1 SUB #11 <- #16 B-N//ef}
DO ,1 SUB #12 <- #158 ru 6`Z+p
DO ,1 SUB #13 <- #52 @/kI;8
PLEASE READ OUT ,1 HNS^:XR
PLEASE GIVE UP E2r5Pg
}d}gb`Du
a%Q`R;W
Java w{DU<e:
public class Hello LRHod1}mS
{ "L]v:lg3
public static void main(String[] args) 8*u'D@0
{ ]7_>l>
System.out.println("Hello, world!"); ^$P_B-C N
} m+'1c}n^7
} Db Qp(W0
3g!Z[SZ
mbbhz,
JSP 9ia&/BT7"z
<% lVT*Ev{&.
out.print("Hello, world!"); 3iw3:1RZUZ
%> V]--d33/a
?MFC(Wsh
d[l8qaD
MIXAL 8i]
S[$Fc
TERM EQU 19 the MIX console device number _DSDY$Ec
ORIG 1000 start address #9TL5-1y
START OUT MSG(TERM) output data at address MSG CP9 Q|'oJ
HLT halt execution D6lzcf
MSG ALF "MIXAL" Sm {Sq
ALF " HELL" 40=u/\/K
ALF "O WOR" )kjQ W&)g
ALF "LD " yH:p*|% :
END START end of the program ^(
}~LGq.H
<=|^\r
!}&
Nuva a=ZVKb
<..直接输出..> TX YO{
Hello, world! 91R7Rrne
Y*9vR~#H
<..或者..> b'^<0c
Ge=6l0
<. t|V5[n!
// 不带换行 pFMJG<W9,
? "Hello, world!" sE]z.Po=
Rmn|!C%%K
// 或者 Wx#l}nD
T*B`8P
// 带换行 SD~4CtlfI
?? 'Hello, world!' jXmY8||w
.> 1h`F*:nva
])qnPoQ<n
0ie)$fi
OCaml bhDqRM
let main () = *>aVU'
print_endline "Hello world!";; 8@;R2]Q
i0\]^F
Ot=nKdP}D
Pascal "}0QxogYE
program Hello; Zd)LVc[
begin 4j+M<g
writeln('Hello, world!'); \v:Z;EbX
end. 3LQu+EsS
iX2exJto
+`S_Gy
Perl OP(om$xm
#!/usr/local/bin/perl ~|~ 2B$JeV
print "Hello, world!\n"; Sh5m+>7K
/3Y"F"`M.
(:H4
PHP ou)0tX3j
<?php \qW^AD(it<
print("Hello, world!"); yHf^6|$8
?> {J)gS
m(xyEU
'T|QG@q
Pike P_Gu~B!Y
#!/usr/local/bin/pike /&=y_%VR
int main() { O=_c|u{N
{ Y^#>3T
write("Hello, world!\n"); >;M STHeW
return 0; 6ypHH
2X
} ]~3a ~
Y2uy@j*N
/viBJ`-O
PL/I hG<W*g
Test: procedure options(main); ^8ilUu
declare My_String char(20) varying initialize('Hello, world!'); E_D@7a
put skip list(My_String); {^:i}4ZRl
end Test; ^5!"[RB\
W^,p2
Ly`.~t(~l
Prolog MnY}U",
goal './qBJ
write("hello,world!"). $Vs5d=B
8v^AVg
N#Nc{WU'B
Python ?$\sMkn
#!/usr/local/bin/python PEtr8J$uB
print "Hello, world!" 5}9rpN{y
<pT1p4T<
Y!u">M#@
REXX dqt}:^L*0g
say "Hello, world!" .zW.IM}Z
>6(e6/C-9
\Z/0i|
Ruby {oo(HD;5
#!/usr/bin/ruby iqd7
print "Hello, world!\n" 2mthUq9b*
h5E<wyd96.
caTKi8
Scheme ?|<p^:
(display "Hello, world!") u]3VK
(newline) i#U_g:~wC
9M[
DQN"85AIZ
sed (需要至少一行输入) bHs},i6
sed -ne '1s/.*/Hello, world!/p' NU7k2`bqAk
TDR#'i
D0gz
((
Smalltalk do< N+iK
Transcript show: 'Hello, world!' Jj1lAg0
S:
g 2V
&:C(,`~
SNOBOL 6se[>'5
OUTPUT = "Hello, world!" G>2: WQ/
END i@YM{FycX
&xFs0Ri(
*U,W4>(B
SQL cbx(
L8
create table MESSAGE (TEXT char(15)); F
B&l|#e
insert into MESSAGE (TEXT) values ('Hello, world!'); 0)|;uW
select TEXT from MESSAGE; =\jPnov!
drop table MESSAGE; pN;T t+}
h4>q~&Pd
Y-"7R>^I
Tcl q+67Wc=
#!/usr/local/bin/tcl g.Kyfs4`
puts "Hello, world!" !xC IvKW
c=:A/z{
[k,FJ5X
TScript d6e]aO=g
? "Hello, world!" LaIH3!M3
GmN~e*x>p
m&6I@S2
Turing ?trqe/
put "Hello, world!" 2C&l\16
o2riy'~
3q (]Dg;v
UNIX-style shell G8hDR^ra
程序中的/bin/sh可改为您使用的shell .t%`"C
0yKPYA*j
#!/bin/sh [iG4qI
echo 'Hello, world!' X&