“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。 sVFO&|L
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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》。 bY~K)j
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以下是用不同语言写成的Hello World程序的几个例子: ,>j3zjf^
Ada [DaAvN^0A
with Ada.Text_Io; use Ada.Text_Io; ]\39#
procedure Hello is C[^VM$
begin uKJ:)oyaCP
Put_Line ("Hello, world!"); Ic/hVKYG5
end Hello; R$:-~<O
G@7^M}
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汇编语言 [c?0Q3F
@yTu/U
x86 CPU,DOS,TASM i/X3k&
MODEL SMALL , cxqr3
o
IDEAL qYoW8e
STACK 100H Oc)n,D)0
:|j[{;asY
DATASEG ioi/`iQR
HW DB 'Hello, world!$' SgU@`Pb
PF4[;ES'
CODESEG uz3cho'
MOV AX, @data +R~]5Rxd
MOV DS, AX #]Vw$X_S
MOV DX, OFFSET HW ]5'*^rz ^
MOV AH, 09H AH,?B*zGj
INT 21H 3U6QYD55]]
MOV AX, 4C00H 8r(Vz
INT 21H ?wtKi#k'v#
END Trirb'qO
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&OU.BR>
x86 CPU,GNU/Linux,NASM B;bP~e>W
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ,.Gp_BI
;Enter this into "hello.asm" then type: 0hS&4nW
;"nasm -f elf hello.asm" wU%uO/sU9
;"ld hello.o -o hello" ?"b __(3
;"./hello" |1wZ`wGZ:L
hTBJ\1
-
section .data ;data section declaration }%KQrlbHJl
msg db 'Hello World!',0AH VmQ^F|
{
len equ $-msg ;string length RlfI]uCDM
S(=@2A+;
section .text ;code section declaration l"8g9z
global _start ;entry point (start of execution) B+FTkJ0t+G
_start: mov edx,len ;string length ^ iu)vED
mov ecx,msg ;string start 2K~v`c*4
mov ebx,1 ;file handle: stdout >uCO=T,|
mov eax,4 ;sys_write lR?1,yLp
int 80h ;kernel system call eHx {[J?
iu{y.}?
mov ebx,0 ;return value /: !sn-(
mov eax,1 ;sys_exit _~Lu%
int 80h ;kernel system call A7QT4h&6
Va[&~lA)
1mV
'
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x86 CPU,Windows,MASM32 ~&/Nl_#
.386 s\.r3U&6
.model flat,stdcall UXSwd#I&
option casemap:none kU:Q&[/jzH
;Include 文件定义 _WV13pnRu
include windows.inc Ps!
\k%FUl
include user32.inc P w6l'
includelib user32.lib s2sJJdN
include kernel32.inc YloE4PAY7
includelib kernel32.lib E=.J*7
;数据段 +) 9=bB
.data 8hV4l'Pa72
szCaption db 'A MessageBox!',0 :|l0x a
szText db 'Hello,world!',0 1xxTI{'g[
;代码段 BDN}`F[F
.code p7},ymQ|YQ
start: 7\dt<VV
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK VU\G49
invoke ExitProcess,NULL NX8w(~r,:
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Xe}I;sKrB
end start =
CXX.%N
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AWK i&HU7mP/
BEGIN { print "Hello, world!" } W__$
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UXa%$gwFw
B_!S\?}$
BASIC Xk^<}Ep)c
传统版BASIC(例如GWBASIC): "97sH_
,
f`}u9!jVR
10 PRINT "Hello, world!" jp-(n z\
20 END 9aID&b+
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或在提示符输入: rl"yE=
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?"Hello, world!":END D<Z\6)|%I
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现代版BASIC(例如Quick BASIC): 0l(G7Ju
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Print "Hello, world!" T5[(vTp
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以下的语句在Quick BASIC中同样有效: lz).=N}m
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? "Hello,world!" *eAt '
d.sn D)X
a/d8_(0
BCPL nQw, /Lk
GET "LIBHDR" ylmVmHmc
* se),CP!s
LET START () BE ~@^ pX*%i
$( OoOwEV2p_
WRITES ("Hello, world!*N") 2J(,Xf
$) .>5E 4^$%
?AQR\) P
C-2#-{<
Befunge eET1f8B=L
"!dlrow olleH">v 5IG#-Q(6sp
, .v) A|{:2
^_@ `?N|{kb
P\X$fD
%F*h}i
Brainfuck >+BLD
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Kn+B):OY+
+++++++++++++++.>.+++.------.--------.>+.>. Xp^71A?>
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C pr"q-S>E
#include <stdio.h> w="
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int main(void)
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{ ds+0y;vc
printf("Hello, world!\n"); =sXk,I;
return 0; e=6C0fr
} #w[Ie+
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C++ m!<uY?,hf
#include <iostream> O~bzTn
~<_PjV
int main() ~
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{ l;J B;0<s"
std::cout << "Hello, world!" << std::endl; "CQ:<$|$
return 0; 3}?]G8iL?L
} ue6&)7:~
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^paM{'J\\)
C++/CLI /9u12R*<
int main() \g;-q9g;O
{ [M.!7+$o
System::Console::WriteLine("Hello, world!"); _%aJ/Y0Cy
} [%6"UH
r
mvW,nM1Y
p?sC</R
C# (C Sharp) ON3~!Q)
class HelloWorldApp r7:4|6E
{ [lAZ)6E~=
public static void Main() 4}HY= 0Um
{ >uDE<MUC
System.Console.WriteLine("Hello, world!"); n#5%{e>
} QK/~lN
} FAd4p9[Y
}7|UA%xz
lxD~[e
COBOL LZ*ZXFIg
IDENTIFICATION DIVISION. 64-;| k4F
PROGRAM-ID. HELLO-WORLD.
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@ * *]o
ENVIRONMENT DIVISION. L Z#SX5N
O9 [Dae{i
DATA DIVISION. ZC:7N{a
h}jE=T5Hc
PROCEDURE DIVISION. kC-OZ VoO
DISPLAY "Hello, world!". >a2i%j/T
STOP RUN. Sy`7 })[
CrI:TB>/"
},G5!3
Common Lisp gflu!C6
(format t "Hello world!~%") LYyOcb[x
&,~Oi(SX5
aRF}FE,u
DOS批处理 G$$y\e$
@echo off 4brKAqg.
echo "Hello, world!" dJD8c2G
4XXuj
loFApBD=$^
Eiffel sDnXgCcS!
class HELLO_WORLD a@V`EEZ
W~FM^xR?p
creation z#elwL6
make _"0Bg3Y
feature +(3U_]Lu
make is K.K=\
Y2
local uMe]].04
io:BASIC_IO i_6 Y6
do #)N}F/Od^
!!io 5WvtvSO
io.put_string("%N Hello, world!") /V@9!
end -- make FpM0 %
end -- class HELLO_WORLD %gE*x
#
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Erlang f/NfvLi(AU
-module(hello). i@p0Jnh|
-export([hello_world/0]). Dm0Ts~
+:?"P<'
hello_world() -> io:fwrite("Hello, World!\n"). }grel5lq
y)e8pPDG
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Forth i917d@r( <
." Hello, world!" CR zBTyRL
l
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%^CoWbU
Fortran lo:{T_ay
WRITE(*,10) z->[:)c
10 FORMAT('Hello, World!') ruQ1Cph
STOP RO+N>Wkt
END HJeZm
eQqx0+-0c
TcM;6h`
HTML zLda+
<HTML> s/0S]P]}f
<HEAD> DYFfq
<TITLE> Hello World! </TITLE> sV`!4
u7%}
</HEAD> S)$iHBx{
<BODY> E\Et,l#|LY
<p>Hello World!</p> (6#,
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</BODY> Y ZyV
</HTML> -\V!f6Q
:sL?jGk\
4V9S~^v|
HQ9+ 5:sk&0:@U
H $)6%LG_@
Hlj_oDL
lOuO~`,J
INTERCAL U+FI^Xrt#
PLEASE DO ,1 <- #13 2j
<Y>Y
DO ,1 SUB #1 <- #238 $"[5]{'J
DO ,1 SUB #2 <- #112 _^ny(zy(
DO ,1 SUB #3 <- #112 nqMXE82
DO ,1 SUB #4 <- #0 qRnD{g|{1
DO ,1 SUB #5 <- #64 @nOj6b
DO ,1 SUB #6 <- #238 vlS+UFH0
DO ,1 SUB #7 <- #26 3BzC'nplm
DO ,1 SUB #8 <- #248
vle`#c.
DO ,1 SUB #9 <- #168 r#X6jU
DO ,1 SUB #10 <- #24 /_l$h_{DH
DO ,1 SUB #11 <- #16 AkE(I16Uy~
DO ,1 SUB #12 <- #158 bs9X4n5
DO ,1 SUB #13 <- #52 +9!=pRq
PLEASE READ OUT ,1 'NYW`,
PLEASE GIVE UP U1^3 &N8
6I!B>V#U+
g/f^|:
Java R Q2DTQ-$
public class Hello "vL,c]D
{ C!z7sOu
public static void main(String[] args) eN{ewn#0.
{ {usv*Cm
System.out.println("Hello, world!"); \\UOpl
} (@&+?A"6`
} &b:SDl6
:qe.*\
c
?hh#@61
JSP 1@S(v L3a
<% mo()l8
out.print("Hello, world!"); >#Ue`)d`aY
%> w1J%%//(h
nc/F@HCB
[wv;CUmgc
MIXAL KqhE=2,
TERM EQU 19 the MIX console device number UrJrvx
ORIG 1000 start address &~{0@/
START OUT MSG(TERM) output data at address MSG ]r.95|V*
HLT halt execution iwx*mC{|A
MSG ALF "MIXAL" e` {F7rd:
ALF " HELL" wx[Y2lUh6
ALF "O WOR" 3EO:Uk5<
ALF "LD " Yx"un4
END START end of the program vMv?
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Nuva X(M|T]`b:
<..直接输出..> YE;Tpji
Hello, world! :&`,T.N.vK
u%b.#!
<..或者..> PSREQK@}E
-?vII~a9y
<. ]Mb:zs<r
// 不带换行 !5*
? "Hello, world!" V<ExR@|}.%
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// 或者 VbfTdRD-
2C[xrZa^
// 带换行 o_R_
?? 'Hello, world!' ffI
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.> ,0\Pr
d8ck].m=
ni~1)"U.
OCaml *c>B,
let main () = zr@HYl
print_endline "Hello world!";; <:ptNGR
R?5v//[
`/RcE.5n\@
Pascal g(QT"O!dY
program Hello; |{ TVW
begin -F`uz,wZ
writeln('Hello, world!'); K.r
"KxCm|
end. SbK6o:[
=QS%D*.|D
ocPM zq-
Perl \#7@"~<
#!/usr/local/bin/perl J-5E# v
print "Hello, world!\n"; [5i}C
K_=
2}0S%R(
/vNHb_-
PHP '
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<?php 2#)z%K6T
print("Hello, world!"); ioJ|-@!#o
?> #,CK;h9jy!
"|nh=!L
(8Q*NZ
Pike `"h[Xb#A`b
#!/usr/local/bin/pike we&D"V
int main() cH6<'W{*
{ +<rWYF(ii/
write("Hello, world!\n"); Gc,6;!+(
return 0; -=4{X
R3
} iCIU'yI
Ye]-RN/W
[yx8?5
PL/I %_.
fEFy07
Test: procedure options(main); @FaK/lKK
declare My_String char(20) varying initialize('Hello, world!'); k7)<3f3&S.
put skip list(My_String); A;Av0@w
end Test; #u/5
nm
s`I]>e
Btyp=wfN[
Prolog t7 +U!
goal ?!a8'jfs
write("hello,world!"). d7P'c!@+
Uu0
t{Wu5<F:
Python )NmYgd~%
#!/usr/local/bin/python `h='FJ/!
print "Hello, world!" ;.{J>Q/U,
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jX&/ e'B
REXX 9a$ 7$4m
say "Hello, world!" g).IF.
9o+e3TXp#
5bo')^xa
Ruby w,1&s};g\
#!/usr/bin/ruby 4,.[B7irR
print "Hello, world!\n" c"oJcp
e)f!2'LL
S<81r2LT
Scheme @_H
L{q%h
(display "Hello, world!") qZYh^\
(newline) a\*_b2 ^n
(d*~Qpi{7
7bY N
sed (需要至少一行输入) CPci
'SO
sed -ne '1s/.*/Hello, world!/p' SYA0Hiw7P
1T0s
UIY
FJ] ?45
Smalltalk cCv@fks
Transcript show: 'Hello, world!' "R^0eNv$
v,Uu)Z
1eOQ;#OV
SNOBOL )-^[;:B\k"
OUTPUT = "Hello, world!" W%@0Y m`7
END 5%]O'h
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5
51p*
B2
SQL |h-e+Wh1
create table MESSAGE (TEXT char(15)); @ +yjt'B
insert into MESSAGE (TEXT) values ('Hello, world!'); 8fA8@O}
select TEXT from MESSAGE; @Px_\w
drop table MESSAGE; yV t8QF!
[sZ,nB/
1s-=zs
Tcl mbXW$E-&R2
#!/usr/local/bin/tcl [z,6 K=
puts "Hello, world!" .TO#\!KBv
yX%NFXD
Oid;s!-S 6
TScript O
#5`mo
? "Hello, world!" r#NR3_@9
t#2szr+
51 "v`O+
Turing o[aIQ|G
put "Hello, world!" ?0?+~0sI
^?S lM
%mRnJgV5k
UNIX-style shell 8iC9xSH[%
程序中的/bin/sh可改为您使用的shell FW:V<{f
."j=s#OC(
#!/bin/sh ]SUW"5L-
echo 'Hello, world!' 9#1Jie$
#&snl
l4AXjq2
GUI WO=P~F<