“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。 \PFx#
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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》。 H6I #Xj
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以下是用不同语言写成的Hello World程序的几个例子: 3wE8y&
Ada V9VP"kD
with Ada.Text_Io; use Ada.Text_Io; 1+jYpYEQW
procedure Hello is HFr3(gNj@
begin (2li:1j
Put_Line ("Hello, world!"); E8i:ER $$7
end Hello; jE#8&P~
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W,~1KUTc
汇编语言 J$Epj
:/NN=3e
x86 CPU,DOS,TASM _p&$X
MODEL SMALL {H V,2-z
IDEAL KV_Ga8hs
STACK 100H 0vp I#q
G!8pF
DATASEG b0X[x{k"
HW DB 'Hello, world!$' f>dkT'4
CiI:
uU
CODESEG CK(ev*@\D,
MOV AX, @data [MS.5+1Y
MOV DS, AX 9C;Y5E~'L
MOV DX, OFFSET HW H Im,
"iYk
MOV AH, 09H 6t:c]G'J
INT 21H rbPs~C-[
MOV AX, 4C00H ts<dUO
INT 21H +
nS/jW
END sK0VT"7K
6# ";W2
A#S:_d
x86 CPU,GNU/Linux,NASM 1fv~r@6s
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). JF%=Bc $C
;Enter this into "hello.asm" then type: Ts .Zl{B
;"nasm -f elf hello.asm" k{jw%a<Sc
;"ld hello.o -o hello" 5iddB $
;"./hello" _|3TC1N$n
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section .data ;data section declaration
IB{ZE/
msg db 'Hello World!',0AH Ok~{@\
len equ $-msg ;string length Us,[x Q
I<./(X[H:#
section .text ;code section declaration 3D{4vMmX
global _start ;entry point (start of execution) O6,"#BX
_start: mov edx,len ;string length VhFRh,J(T
mov ecx,msg ;string start BddECY,z
mov ebx,1 ;file handle: stdout xg,]M/J
mov eax,4 ;sys_write MW$H/:3
int 80h ;kernel system call gkML .u
F[D0x26^
mov ebx,0 ;return value <ytKf<a%e
mov eax,1 ;sys_exit lzs(i2pA
int 80h ;kernel system call BrH;(*H)8
_~ZQ b
*C@[5#CA2z
x86 CPU,Windows,MASM32 * \o$-6<
.386 yC0f/O
.model flat,stdcall `JWYPsWk
option casemap:none M1]6lg[si
;Include 文件定义 0*Km}?;0-
include windows.inc {IPn\Bka
include user32.inc s i"`
includelib user32.lib @y0bU*v7
include kernel32.inc G:c8`*5Q
includelib kernel32.lib )n}]]^Sc
;数据段 iCnUnR{
.data 8jjk?PUD8
szCaption db 'A MessageBox!',0 %rDmW?T
szText db 'Hello,world!',0 sb|3|J6=
;代码段 J4[x,(iq(
.code L);||]B
start: =F%wlzF:
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK A_jB|<bjTP
invoke ExitProcess,NULL ,/?%y\:J
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> L_U3*#Zdz7
end start a(ux?V)E.
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sh
!~T<yy
AWK n-y^7'v
BEGIN { print "Hello, world!" } lv00sa2z
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BASIC t ?9;cS4
传统版BASIC(例如GWBASIC): (I7&8$Zl
/m
Q2;*|
10 PRINT "Hello, world!" 1akD]Z
20 END @cu}3>
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或在提示符输入: MJ>Qq[0
?)?IZ Qj
?"Hello, world!":END Jcalf{W6
{
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现代版BASIC(例如Quick BASIC): v?YdLR
hi {2h04
Print "Hello, world!" kMl @v`
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以下的语句在Quick BASIC中同样有效: ~mXZfG/D
vbRrk($`
? "Hello,world!" O+G~Qp0b>
)(h&Q?
Ar
' "ZRD_"
BCPL {B FT
GET "LIBHDR" My]+?.Ru
.k# N7[q=
LET START () BE qDby!^ryc
$( >AR Tr'B
WRITES ("Hello, world!*N") o &BPG@n
$) GB&Nt{
Cz'xGW{
sg3h i"Im
Befunge `pP9z;/Xq
"!dlrow olleH">v y#]}5gJ
, Z|2Eb*
^_@
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Dv.I
<A#5v\{.;~
lZ}izl
Brainfuck =E;=+eqt
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< kRmj"9oA
+++++++++++++++.>.+++.------.--------.>+.>. KK:N [x
eQ$N:]
d32@M~vD
C yJnPD/i
#include <stdio.h> X3P&"}a
'n~fR]h}
int main(void) LWD.
{ WI,40&<
printf("Hello, world!\n"); Y{,2X~ 7
return 0; (l
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} Hab!qWK`
0;}Aj8Fle
O
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C++ bX7EO 8
#include <iostream> :FnOS<_B
BRe{1i 6
int main() T}UT7W|
{ V?=TVI*k
std::cout << "Hello, world!" << std::endl; Ymq3ty]Pe
return 0; d{W}p~UbH
} uii7b7[w
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C++/CLI ~NxEc8Y
int main() x7f:F.
{ |Z
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System::Console::WriteLine("Hello, world!"); qB+n6y%
} ]5N zK=2{
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pL~=Z?(B
C# (C Sharp) rw&y,%2
class HelloWorldApp *MI)]S
{ t')h{2&&!2
public static void Main() Khj=llo,
{ *.8JP
System.Console.WriteLine("Hello, world!"); uMHRUi
} J2'K?|,m
} 7ZQ'h3K
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IdF$Ml#[h
COBOL p zg&/m&F`
IDENTIFICATION DIVISION. PT+c&5A S
PROGRAM-ID. HELLO-WORLD. z`OkHX*+2|
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ENVIRONMENT DIVISION. i *B:El1
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DATA DIVISION.
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[.a;L">
PROCEDURE DIVISION. O] H=s
DISPLAY "Hello, world!". AeaPK
STOP RUN. %[XY67A3I
!_dR'
*="m3:c'J
Common Lisp YN^T$,*
(format t "Hello world!~%") n26>>N
HVGr-/
{ V0>iN:~S
DOS批处理 UQ~4c,
@echo off UW/N MjK
echo "Hello, world!" =53bLzr
{y b D
wLUF v(&C
Eiffel xg} ug[
class HELLO_WORLD >t0%?wj)Y
Oqmg;\pm
creation )\0q_a
make ZBJ3 VK
feature 's.~$
make is Yx),6C3
local w" JGO
io:BASIC_IO uY;R8CiD
do 1ef'7a7e8
!!io YjLe(+WQ
io.put_string("%N Hello, world!") x'qWM/
end -- make &K
*X)DAs
end -- class HELLO_WORLD HIGNRm
0[)VO[
i3PKqlp.
Erlang 8*s7m
-module(hello). @rwU 1T33
-export([hello_world/0]). jV^C19
]'k[u
hello_world() -> io:fwrite("Hello, World!\n"). -72j:nk
mM5|K@0|
BS7J#8cu
Forth HabzCH
." Hello, world!" CR M3(k'q7&:
ZXt?[Ll
yU7I;]YP
Fortran FZXyfZw!|
WRITE(*,10) 0^#DNq*NQ
10 FORMAT('Hello, World!') n+;vjVS%
STOP O-PdM`mqW
END w!`Umll2
yN\e{;z`
g19S
HTML ooE{V*Ie
<HTML> })[($$f/
<HEAD> os$nL'sq
<TITLE> Hello World! </TITLE> i8~$o:&HT
</HEAD> B1$ikY
<BODY> t3b@P4c\
<p>Hello World!</p> l}}UFEA^
</BODY> 9?EVQ
</HTML> nbmc[!PwG
\.<KA
-$YJfQE6G
HQ9+ ~R.dPUr
H A#DR9Eq
z[9UQU~x?
tln1eN((q
INTERCAL #$'FSy#
PLEASE DO ,1 <- #13 vM4<d>
DO ,1 SUB #1 <- #238 ]V<-J
DO ,1 SUB #2 <- #112 8_xLl2
DO ,1 SUB #3 <- #112 /P+q}L%
DO ,1 SUB #4 <- #0 aB"xqh)a}T
DO ,1 SUB #5 <- #64 6D/ '`
DO ,1 SUB #6 <- #238 C1QV[bJK
DO ,1 SUB #7 <- #26 n?E}b$6
DO ,1 SUB #8 <- #248 6G_<2bO
DO ,1 SUB #9 <- #168 >I<PO.c!
DO ,1 SUB #10 <- #24 H+l,)Se
DO ,1 SUB #11 <- #16 -9o{vmB{
DO ,1 SUB #12 <- #158 `.^ |]|u
DO ,1 SUB #13 <- #52 \##5O7/1
PLEASE READ OUT ,1 Qn=$8!Qqa
PLEASE GIVE UP pn\V+Rg'
HI!4
CMl~=[foW
Java _x % 1 F
public class Hello Q_O*oT(0
{ '*R%^RK
public static void main(String[] args) ::"E?CQLV
{ YD&_^3-XM
System.out.println("Hello, world!"); Q"VMNvKYB
} N.hzKq][
} QxpKX_@Q5
SSmHEy*r)
C2/}d? bki
JSP %Q4i%:Qi
<% 3f&|h^\nD
out.print("Hello, world!"); GAl+Zg##
%> 1;wb(DN*c
U5+vN[ K
|_zO_F rtp
MIXAL li/aN
TERM EQU 19 the MIX console device number yV]xRaRr2
ORIG 1000 start address P))^vUt~
START OUT MSG(TERM) output data at address MSG |~e?,[-2`r
HLT halt execution +)/Uu3"=
MSG ALF "MIXAL" M{KW@7j
ALF " HELL" oH-8r:{
ALF "O WOR" fL6e?\Pw
ALF "LD " .j?kEN?w
END START end of the program /[pqI0sf<A
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LWmB,
Zf/
Nuva wE Qi0!
<..直接输出..> fx?$9(r,
Hello, world! G{lcYP O
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<..或者..> \:/Lc{*}MD
m*n5zi|O
<. Lj
8<'"U#
// 不带换行 ZGz|m0b (
? "Hello, world!" YfDWM7x7,
sb.J
bE8
// 或者 yrr)
y
>^SEWZ_[
// 带换行 ^T079=$5
?? 'Hello, world!' .C!vr@@]
.> s3
B'>RG}
Oh; Jw
G|4^_`-
OCaml iRw&49
let main () = Yl({)qK{
print_endline "Hello world!";; z2 hFn&
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1r9 f[j~
Pascal }Dfwm)]Q
program Hello; PCE4W^ns
begin !Q%P%P<$
writeln('Hello, world!'); bcz-$?]
end. ?IW_O~Js
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Perl Qn+:/zA;
#!/usr/local/bin/perl ;JTt2qQKo
print "Hello, world!\n"; PkUd~c
q,l)I+
j8$Zv%Ca%
PHP 7"2b H
<?php y8
E}2/
print("Hello, world!"); UY>v"M
?> p*qPcuAA
]z ==
w1^QD^KnH
Pike w"zE_9I\
#!/usr/local/bin/pike {aOkV::
int main() 0D ~
Tga)
{ }DjYGMrTB
write("Hello, world!\n"); x]4Kkpqm
return 0; eN>0wd5{L
} #I0pYA2m
`jsEN ;<
@wN
G
PL/I "v]%3i.*
-
Test: procedure options(main); cy3Td28,
declare My_String char(20) varying initialize('Hello, world!'); $:bih4@>
put skip list(My_String); W`)<vGn=Y
end Test; _GA$6#]
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93Yn`Av;
Prolog {|<"C?
goal ${r[!0|
write("hello,world!"). &0
\
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r@}bDkx
E`;;&V q-
Python b>=_*nw9
#!/usr/local/bin/python !]koSw}
print "Hello, world!" DSyXr~p8
w=_Jc8/.
YZwaD b
REXX .qD@
Y3-
say "Hello, world!" /DFV$+9
b{Zpux+
6[ga$nF?
Ruby p~jlx~1-]
#!/usr/bin/ruby bud&R4+
print "Hello, world!\n" a:Q[gF8>
q!lP"J
]7YNIS
Scheme ot%.M*h-
(display "Hello, world!") :}}%#/nd
(newline) !PUZWO
yW7'?
hf<J
\
sed (需要至少一行输入) !u|Tu4G^
sed -ne '1s/.*/Hello, world!/p' ]!"S+gT*C
](0mjE04<d
S;\R!%t_
Smalltalk Fwg^(;bL
Transcript show: 'Hello, world!' J ++v@4Z
TpfZ>d2
k3Cz9Vt%
SNOBOL -apXI.
OUTPUT = "Hello, world!" h1D?=M\9
END #;VA5<M8
#@.-B,]
@_ygnNn4R
SQL k[|~NLB8
create table MESSAGE (TEXT char(15)); W[''Cc.
insert into MESSAGE (TEXT) values ('Hello, world!'); ~f>2U]F>5
select TEXT from MESSAGE; z}4L=KR\v
drop table MESSAGE; "jg@w%~
rxZi8w>}
,^s0</ve
Tcl C"uahP[Y
#!/usr/local/bin/tcl K >tf,
puts "Hello, world!" wFS2P+e;X
v1G"3fy9
}(FPV*mS
TScript P87#
CAN
? "Hello, world!" K7TzF&
<O~WB
vRQOs0F;
Turing a>mMvc"
put "Hello, world!" >7Jr^o#|_x
Vzlh+R>c
<v
0*]NiX
UNIX-style shell ^-)txC5{T
程序中的/bin/sh可改为您使用的shell k;yw#Af8
vG.9H_&
#!/bin/sh O'*@ Ytn
echo 'Hello, world!'
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