“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。 @O}%sjC1
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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》。 )v1n#m,W
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以下是用不同语言写成的Hello World程序的几个例子: ':8yp|A|
Ada >Vr+\c
with Ada.Text_Io; use Ada.Text_Io; zbdmz
procedure Hello is Z(p kj
begin }EmNSs`$r
Put_Line ("Hello, world!"); 6P=6E
end Hello; VLW<"7I 6\
0c4H2RW
_tZT
汇编语言 WL4{_X
"nXL7N0
x86 CPU,DOS,TASM 7/lXy3B4
MODEL SMALL zhH-lMNj-
IDEAL X
cmR/+
STACK 100H dzMlfJp
!es?GJq`
DATASEG oLEqy
HW DB 'Hello, world!$' m72r6Yq2@
K_
P08
CODESEG Qvh: hkR
MOV AX, @data y^:!]-+
MOV DS, AX Hc1S:RW
MOV DX, OFFSET HW i-)OY,
MOV AH, 09H z{U2K'
INT 21H (]0JI1
d
MOV AX, 4C00H =Jfo=`da
INT 21H {)]5o| Hx
END GGcNaW'
8%]o6'd4
h.@5vhD
x86 CPU,GNU/Linux,NASM (j;s6g0
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). L.XGD|m
;Enter this into "hello.asm" then type: x5vvY
;"nasm -f elf hello.asm" 6p%;:mDB
;"ld hello.o -o hello" p`lv$ @q'
;"./hello" 5y;texsj[
-@{5
u d
section .data ;data section declaration !E<y:$eH:
msg db 'Hello World!',0AH UU')V
len equ $-msg ;string length 5Jd(&k8%
To1 .U)do
section .text ;code section declaration hnag<=
global _start ;entry point (start of execution) LIYj__4=|
_start: mov edx,len ;string length r9<OB`)3+
mov ecx,msg ;string start [F4]pR(
mov ebx,1 ;file handle: stdout iIFM 5CT
mov eax,4 ;sys_write CAdq oCz|
int 80h ;kernel system call %"|I`
m
s Wk92x _l
mov ebx,0 ;return value $eUI.j(HU
mov eax,1 ;sys_exit $_NYu
int 80h ;kernel system call zil^^wT0J
hw/:
oUrNz#U
x86 CPU,Windows,MASM32 Vvk1 D(
.386 F)_zR
.model flat,stdcall {2Jo|z
option casemap:none 555j@
;Include 文件定义 NO5\|.,Z
include windows.inc ?5(Cwy ?
include user32.inc z+IBy+
includelib user32.lib w.w(*5[
include kernel32.inc YCr:nYm<f
includelib kernel32.lib gE$D#PZa
;数据段 xi|T7,\X
.data c:(Xkzj
szCaption db 'A MessageBox!',0 LUSBRr8
szText db 'Hello,world!',0 k I
;代码段 (/TYET_H
.code xwK{}==U
start: ]E/^(T-O
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Dy`;]-b6u
invoke ExitProcess,NULL /
i[F
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ,MH/lQq%
end start
JmL{&
*HiN:30DZ
[\eh$r\
AWK -I
dW-9~9
BEGIN { print "Hello, world!" } D@@J7
'/l<\b/E
zf+jQ
BASIC LYY3*d
传统版BASIC(例如GWBASIC): 9yla &XTD
\\w<.\Yh
10 PRINT "Hello, world!" X@;;
h
20 END oPP`)b$x
>@?!-Fy5
或在提示符输入: ~jcdnm]
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?"Hello, world!":END Z!HQ|')N5
wD+4#=/j
现代版BASIC(例如Quick BASIC): L\;n[,.
k# -u!G
Print "Hello, world!" ndW]S 7
)LOV)z|}
以下的语句在Quick BASIC中同样有效: t!^ j0 q
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? "Hello,world!" :(7icHa
(%p@G5GU
W}^X;f
BCPL zsM3
[2E*
GET "LIBHDR" D@.+B`bA
g~ubivl2
LET START () BE T$w`=7
$( VINb9W}G[
WRITES ("Hello, world!*N") 8NP|>uaj
$) |.]sL0;4Z
3i\<#{
Owd{;
Befunge wz[Xay9jW
"!dlrow olleH">v :{7gZ+*
, z[vHMJ
0
^_@ +"P!es\q
LR`]C]
MKiP3kt8
Brainfuck qXF#qS-28
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Tj(DdR#w
+++++++++++++++.>.+++.------.--------.>+.>. _z6_mmMp
(AIgW
c+a" sx\
C yyZs[5Q
#include <stdio.h> #/"?.Z;SSH
)h0
3sv
int main(void) 85e!)I_
{ {pJf~
printf("Hello, world!\n"); rl/]Ym4j
return 0; Kg8n3pLAX
} C3k[ipCN
Q}zd!*
U 7_1R0h
C++ gPJZpaS
#include <iostream> .#Vup{.
Al}D~6MD
int main() S:=
_o
{ !_i;6UVG
std::cout << "Hello, world!" << std::endl; nNc>nB1
return 0; V'iT>
} =PM6:3aKh
[\BLb8
'lWgHmE
C++/CLI #ULjK*)R
int main() $R&K-;D/8
{ EX"o9'
System::Console::WriteLine("Hello, world!"); k`(Cwp{Oc
} V'M#."Of/
*!5X!\e_
*4HogC
C# (C Sharp) n.l7V<1
class HelloWorldApp 8~!9bg6C
{ `zoC++hx
public static void Main() Z%4w{T+[
{ ,v@C=4'm
System.Console.WriteLine("Hello, world!"); P9yg
} dTTC6?yPXf
} ]tsp}M@
qK-\`m
]8o[&50y
COBOL \c(Z?`p]R1
IDENTIFICATION DIVISION. qGkD] L
PROGRAM-ID. HELLO-WORLD. U32&"&";c
9er0Ww.d
ENVIRONMENT DIVISION. :jHDeF.A
uXuA4o$t-
DATA DIVISION. N~!
GAaD
g3*J3I-O
PROCEDURE DIVISION. bAwFC2jO[
DISPLAY "Hello, world!". }trQ<*D
STOP RUN. `:*O8h~i^8
?#0m[k&`
3uy^o
Common Lisp W*WSjuFr2
(format t "Hello world!~%") qe_qag9
h8
!(WO!
Qj3l>O
DOS批处理 8{B]_:
-:
@echo off U
UYx-x
echo "Hello, world!" f?BApm
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., =\/ C<
Eiffel d>gN3}tT
class HELLO_WORLD .|c=]_{
*-,jIaL;
creation H$)__V5I,q
make {^A,){uX]
feature 60XTdJkDkA
make is njGZ#{"eC
local q]rqFP0C
io:BASIC_IO e13' dCG
do 78h!D[6
!!io AYHefAF<w
io.put_string("%N Hello, world!") J`'wprSBb
end -- make 3R?6{.
end -- class HELLO_WORLD p/ au.mc
r"$~Gg.%(
kJNu2S
Erlang VK[`e[.C
-module(hello). :TRhk.
-export([hello_world/0]). |y DaFv
EHH+)mlo
hello_world() -> io:fwrite("Hello, World!\n"). E5Zxp3 N
V]W-**j<
l|L
]==M
Forth VpyqVbx1
." Hello, world!" CR &pFP=|Pq
%d^ =$Q
Z" N}f
,
Fortran Z@gEJ^"yA"
WRITE(*,10) (Y~gItej
10 FORMAT('Hello, World!') |0$7{nQ
STOP `7
3I}%?
END hwi$:[
xz*MFoE
d 6=Z=4w
HTML <o: O<p@6
<HTML> Noi+mL
<HEAD> A&UGr971
<TITLE> Hello World! </TITLE> kn= fW1
</HEAD> 60X))MyN
<BODY> r68d\N`.
<p>Hello World!</p> %mNd9 ]<
</BODY> XLj|y#h
</HTML> n0vhc; d
={B?hjo<-
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HQ9+ PNRZUZ4Z|
H @,;VMO
KvNw'3Ua
i'MpS
INTERCAL V!zU4!@qP
PLEASE DO ,1 <- #13 m/p:W/0L
DO ,1 SUB #1 <- #238 'M=V{.8U
DO ,1 SUB #2 <- #112 r%FfJM@!
DO ,1 SUB #3 <- #112 l5<&pb#b
DO ,1 SUB #4 <- #0 qMmhVUx
DO ,1 SUB #5 <- #64 tE]Y=x[Ux
DO ,1 SUB #6 <- #238 ;G4g;YHy|
DO ,1 SUB #7 <- #26 f19'IH$n{
DO ,1 SUB #8 <- #248 >*"1`vcxF
DO ,1 SUB #9 <- #168 wj-z;YCV
DO ,1 SUB #10 <- #24 d6zfP1lQ
DO ,1 SUB #11 <- #16 G%XjDxo$I
DO ,1 SUB #12 <- #158 !BEl6h
DO ,1 SUB #13 <- #52 ftccga
PLEASE READ OUT ,1 OYj~"-3y)
PLEASE GIVE UP _.+2sm
T3In0LQ
H&=fD` Xq
Java VL8yL`~zc.
public class Hello 3)_(t.$D
{ @
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public static void main(String[] args) c+.?+g
{ Dz<vIMLF{
System.out.println("Hello, world!"); Q)93+1]
} W3]?>sLE*
} 6rh^?B
H57wzG{xG
`8b4P>';O'
JSP n|) JhXQ
<% p#>d1R1&
out.print("Hello, world!"); MxLi'R=
%> N6w!V]b
i?]`9 z
8=WX`*-uH
MIXAL (dQsR sA
TERM EQU 19 the MIX console device number ]<:qMLg
ORIG 1000 start address _g%h:G&^
START OUT MSG(TERM) output data at address MSG hZUnNQ
HLT halt execution 6a4-VX5
MSG ALF "MIXAL" @0fiui_
ALF " HELL" Fg^Z g\X3
ALF "O WOR" +W^$my)<
ALF "LD " +.IncY8C$
END START end of the program @9\L|O'~?
#s0Wx47~
cOb,Md
Nuva 6'ia^om
<..直接输出..> fB`7f
$[
Hello, world! F~zrg+VDjL
f#|
wb~
<..或者..> %Z{ 7*jtE
z99jW<*0
<. I@l }%L
// 不带换行 \ 3FOI
? "Hello, world!" M1 _1(LSU
P>qDQ1
// 或者 6+W`:0je
{7d\du&G
// 带换行 V[avV*;3i
?? 'Hello, world!' +uB.)wr
.> }<mK79m
mecm,xwm
5sguv^;C5
OCaml +dJLT}I8M
let main () = 6
u}c543
print_endline "Hello world!";; _OvIi~KW+
qTrb)95
1Gh3o}z
Pascal f/tJ>^N5
program Hello; J:G~9~V^
begin "cx#6Bo|
writeln('Hello, world!');
:qrCqFl
end. r"x/,!_E
on)$y&lu
BOWR}n!g
Perl `m=u2kxY
#!/usr/local/bin/perl 9q>rUoK^
print "Hello, world!\n"; @%4tWE
,]Q
i/m
2PG= T/
PHP ]_y0wLq
<?php xOBzT&
print("Hello, world!"); TY]-L1$
?> ),&tF_z:
0/,Dy2h
??h4qJ
Pike %TS8 9/
#!/usr/local/bin/pike OQ*rxLcA
int main() q+cx.Rc#
{ r>;6>ZMe
write("Hello, world!\n"); ,n/^;. _1
return 0; BiCC72oig
} kqt.?iJw
?@5#p*u0
\@hq7:Q
PL/I X'.*I])
Test: procedure options(main); *k<{ nj@y
declare My_String char(20) varying initialize('Hello, world!'); 2; ~jKR[~
put skip list(My_String); (sL!nRw
end Test; #*x8)6Ct
jZP~!q
DY?;Z98P?
Prolog Q4QF_um
goal YLFM3IaP
write("hello,world!"). [FN4 _
))eQZ3ap9
:JfT&YYi"
Python Nk@a g)
#!/usr/local/bin/python N9X`81)t
print "Hello, world!" |!\5nix3A>
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T;Zv^:]0
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