“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。 AQiwugs
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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》。 p ObX42
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以下是用不同语言写成的Hello World程序的几个例子: x"
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Ada H,u<|UMM_
with Ada.Text_Io; use Ada.Text_Io; eF3,2DDC
procedure Hello is {>)#HD
begin G8Y<1%`<
Put_Line ("Hello, world!"); vG"=h%
end Hello; uD@#
DS[#|
n@,G8=J?
汇编语言 e8#h3lxJ`
x}8yXE"
x86 CPU,DOS,TASM Gvr@|{k
MODEL SMALL EpX&R,Rxk
IDEAL P IwFF}<(
STACK 100H Y*vW!yu
f__cn^1
DATASEG %s(k_|G+4
HW DB 'Hello, world!$' "pRtczxOgR
S-|)QGxV6
CODESEG ,^ . 88<
MOV AX, @data vz7J-CH
MOV DS, AX c:o]d )S
MOV DX, OFFSET HW 5X:*/FuS@
MOV AH, 09H ry` z(f
INT 21H 8;+B*+%@n
MOV AX, 4C00H 'GS"8w~j
INT 21H
T,
)__h
END y3o25}"
%*0^0wz
8Y7Q+p|O
x86 CPU,GNU/Linux,NASM /q`xCS
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 0p}D(m2B
;Enter this into "hello.asm" then type: 2
Cv4=S
;"nasm -f elf hello.asm" 5jgR4a*_v
;"ld hello.o -o hello" ''\Ov
;"./hello" s pp f
~2QR{; XQ
section .data ;data section declaration O4V.11FnW
msg db 'Hello World!',0AH \}"$ ?d'f
len equ $-msg ;string length 9|gr0~j
n4R(.N00
section .text ;code section declaration O#S;q5L@
global _start ;entry point (start of execution) Pn>Xbe
_start: mov edx,len ;string length )]H-BIuGm
mov ecx,msg ;string start r'HtZo$^R
mov ebx,1 ;file handle: stdout Xy$3VU*
mov eax,4 ;sys_write m;GbLncA
int 80h ;kernel system call pw)||Q
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mov ebx,0 ;return value +
|#O@k
mov eax,1 ;sys_exit *&^:T~|=!
int 80h ;kernel system call \Ani}qQ%|
|m^k_d!d
G(G{RAk>
x86 CPU,Windows,MASM32 |6K+E6H
.386 iA' lon
.model flat,stdcall y+c|vdW%
option casemap:none {_ i\f ]L
;Include 文件定义 6'!4jh
include windows.inc V`XNDNJ:
include user32.inc {^7Hgg
includelib user32.lib 5BlR1*
include kernel32.inc ,>0* @2
includelib kernel32.lib eQp4|rf
;数据段 KmA;HiH%J
.data yl7&5)b#9
szCaption db 'A MessageBox!',0 0c<.iM
szText db 'Hello,world!',0 d\R,Q
;代码段 %)/P^9I6
.code ;kS&A(
start: e}
P I^bc
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 8T!+ZQAz
invoke ExitProcess,NULL QSszn`e
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pgQV /6
end start 4GY[7^
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1+jAz`nA:T
AWK ]<cK";
BEGIN { print "Hello, world!" } w1OI4C)~
5ft`zf
,}ECF>
BASIC &3J_^210
传统版BASIC(例如GWBASIC): i*Sqd a
$
7 /VK##z
10 PRINT "Hello, world!" -xEXN[\S
20 END %t" CX5n
UQC=g
或在提示符输入: )ttUWy$w
=F]FP5V
?"Hello, world!":END +wN^c#~7
;>?rP88t
现代版BASIC(例如Quick BASIC): j}JrE,|
{MCi<7j<?
Print "Hello, world!" #xQr<p$L6
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以下的语句在Quick BASIC中同样有效: 5qZ1FE
DRp~jW(\y
? "Hello,world!" 1DE<rKI
2.l Z:VLN
qB0E_y)a
BCPL O4cr*MCb5
GET "LIBHDR" !'&n-Q
jv%kOovj
LET START () BE *E/`KUG]
$( {=!b/l;@
WRITES ("Hello, world!*N") T`\x,`
^
$) t>urc
:U3kW8;UMP
]
2eK
Befunge |"/8XA
"!dlrow olleH">v jr /pj?
, x7:s]<kE
^_@ PT=2@kH
gcPTLh[^Er
TarIPp
Brainfuck ]*
F\"C@
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< j.w@(<=x
+++++++++++++++.>.+++.------.--------.>+.>. aI6$? wus
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GqaDL3Niqs
C aB{vFTD5
#include <stdio.h> )z73-M V"
q Gw -tPD<
int main(void) LcB]Xdsa(
{ nrxo&9[@n
printf("Hello, world!\n"); `\gnl'
return 0; E*V`":efS
} s.N7qO^:E
aE&,]'6
m#PY,y
C++ Y^8C)p9r
#include <iostream> K?B{rE Lp
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int main() !`g~F\l
{ hyCh9YOu)
std::cout << "Hello, world!" << std::endl; ]h* c,.
return 0; ]>LhkA@V
} Z&1T
ysxb?6
p^%YBY#,H
C++/CLI
FT#8L
int main() tyXuG<
{ 4C<jdv_J
System::Console::WriteLine("Hello, world!"); JJ}0gZ
} 8/i!' 0r\
kP#B5K_U|
h]+C.Eqnt#
C# (C Sharp) Ne8Cgp
class HelloWorldApp P&9Gga^I
{ 9o;^[Ql-
public static void Main() ,sA[)wP {
{ G;v8$)Zj
System.Console.WriteLine("Hello, world!"); YP.5fq:
} r"``QmM
} Ge-CY
tk!t
Y8j
5mJ JU
COBOL GNXHM*~
IDENTIFICATION DIVISION. 'oF%,4 !Y
PROGRAM-ID. HELLO-WORLD. As 3.Q(#Z
l)Pu2!Ic
ENVIRONMENT DIVISION. 1<BX]-/tP
&<wuJ%'>)Z
DATA DIVISION. lsNrAA%m
;3d"wW]}7K
PROCEDURE DIVISION. FME3sa$
DISPLAY "Hello, world!". a:"Uh**
STOP RUN. ^* J2'X38I
UUzYbuS>&l
=NnNN'}
Common Lisp i=i(%yQ%
(format t "Hello world!~%") v@Gl|29_
J)`-+}7$v
f|h|q_<;
DOS批处理 ~%^
tB
@echo off bu:S:`
echo "Hello, world!" rqdE6y+^
kSR\RuY*
gZLP\_CL
Eiffel IhA5Wt0j
class HELLO_WORLD :p]'32FA!
b4E:Wn9x
creation lV1G<qP
make G?EoPh^m
feature (yF:6$:#
make is v%"|WV[N
local e?7&M
io:BASIC_IO c0%"&a1]]V
do f0X_fm_q
!!io bn^{c
io.put_string("%N Hello, world!") PV9pa/`@
end -- make `S6x<J&T\/
end -- class HELLO_WORLD Sx?ua<`:d
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[ 7
pQshUm"_
Erlang S`#w+C#EW
-module(hello). -j73Wz
-export([hello_world/0]). G]+&!4
k`0>36
hello_world() -> io:fwrite("Hello, World!\n"). A%`[mc]4#
V'kX)$
zUKmx y@
Forth G'6@+$ppS
." Hello, world!" CR Qp/QaVQ+
Tav*+
2^^`n1?'
Fortran 9?0^ap,T
WRITE(*,10) ``ou/Z
10 FORMAT('Hello, World!') JBJhG<J
STOP W_kHj}dj,p
END =bHD#o|R
`glBV`?^
lrv3fPIW
HTML -amBB7g
<HTML> Zrvz;p@~
<HEAD> !q9+9 *6
<TITLE> Hello World! </TITLE> 2
dAB-d:k
</HEAD> ~kZ G{
<BODY> zx-81fx+k
<p>Hello World!</p> W7 Cc
</BODY> Zy o[(`y
</HTML> 95YL]3V
)xbHCoU,
MrDc$p W G
HQ9+ AQ_|:
H 73xAG1D$r
G*-b}f
TNGU6j}oq
INTERCAL !{^PO<9
PLEASE DO ,1 <- #13 R~)\3] "2m
DO ,1 SUB #1 <- #238 @7?#Y|`
DO ,1 SUB #2 <- #112 kg'o&^/=
DO ,1 SUB #3 <- #112 {vuZ{IJa
DO ,1 SUB #4 <- #0 KU8Jbl*
DO ,1 SUB #5 <- #64 E=>FjCsu<-
DO ,1 SUB #6 <- #238 f6p-s
y>
DO ,1 SUB #7 <- #26 &Rvm>TC=
DO ,1 SUB #8 <- #248 *q()f\
DO ,1 SUB #9 <- #168 @>p<3_Y1
DO ,1 SUB #10 <- #24 j!]YNH@
DO ,1 SUB #11 <- #16 C}_ ojcR
DO ,1 SUB #12 <- #158
hRs&t,{&
DO ,1 SUB #13 <- #52 !4^C #{$
PLEASE READ OUT ,1 m^bNuo
PLEASE GIVE UP MOn
8P1=[i]
',:*f8Jk
Java ~},=OF-b
public class Hello
k~jP'aD
{ .
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public static void main(String[] args) \'|>p/5I
{ mGJasn
System.out.println("Hello, world!"); i(>4wK!!
} 22.8PO0
} Bs O+NP
wM2*#
K%^V?NP*{Z
JSP %O! v"Xh
<% R)mu2^
out.print("Hello, world!"); [uI|DUlI6o
%> Bh;7C@dq
@JyK|.b#0
vSi.txV2
MIXAL v"#mzd.tW
TERM EQU 19 the MIX console device number X22[tqg;&
ORIG 1000 start address k + H3Bq
START OUT MSG(TERM) output data at address MSG (=* cK-3
HLT halt execution R,pX:H+
MSG ALF "MIXAL" TrLu~4
ALF " HELL" U$_xUG
ALF "O WOR" mg*qiScfW
ALF "LD " /f|X(docI
END START end of the program [3{W^WSOz
&(xH$htv1
i 7x7xtq
Nuva L{h%f4Du#
<..直接输出..> vTlwRG=5
Hello, world! |j#C|V%kV
1 D<_N
<..或者..> J"=vE=
^yyC
[Mz
<. wtH?
[>S;)
// 不带换行 t.`@{R$hoA
? "Hello, world!" `bZ/haU}A
kw"SwdP5
// 或者 uF1~FKB
)u/yF*:n
// 带换行 wnM9('\
?? 'Hello, world!' %l,,_:7{
.> B[Zjfc
V3c l~
Ahk8
OCaml C4~;y hz
let main () = &?*V0luP)
print_endline "Hello world!";; %jJ>x3$F
9hOJvQ2U]
E}40oID
Pascal /4`
0?/V
program Hello; YwZ
Z{+n
begin Qzlo'e1
writeln('Hello, world!'); Axe8n1*y
end. SRrw0&ts
S5G6Rj@W
^xij{W`|
Perl nij!1z|M
#!/usr/local/bin/perl D"J!\_o
print "Hello, world!\n"; #ZYVc|sT+
5ZMR,SZhC
$CY't'6Hn
PHP -5I2ga
<?php 2Fq<*pxAY
print("Hello, world!"); BPdfYu,il
?> o[cV1G
l,,>& F
pBETA'fY
Pike JWMpPzs
#!/usr/local/bin/pike q.2ykL
int main() a^=-Mp
{ AO=h
23ZI
write("Hello, world!\n"); *T~Ve;3h;
return 0; ub;ZtsM,%
} 8"fD`jtQ
/XhIx\40l
{|1Y:&M?
PL/I }jVSlCF@t
Test: procedure options(main); |b|&XB_<]Z
declare My_String char(20) varying initialize('Hello, world!'); )*,5"CO
put skip list(My_String); k[HAkB \{
end Test; tb$LriN
brdmz}
0 0M@
Prolog `.x
Fiyc
goal A@sZ14+f
write("hello,world!"). |m80]@>
XI9js{p
,B0_MDA +
Python ^Nmg07_R
#!/usr/local/bin/python A` AaTP
print "Hello, world!" Dg}
Ka7H
69J4=5lX
nSkPM5\TI
REXX qUOKB6
say "Hello, world!" x}Aw)QCh+r
/yZQ\ {=
VxXzAeM
Ruby ]Yvga!S"C
#!/usr/bin/ruby pGK;1gVj
print "Hello, world!\n" &&VqD
w
yb/%?DNQT
3Ei5pX =g
Scheme 'ul~7h;n
(display "Hello, world!") Ygl%eP%Z
(newline) I;Bjfv5
UGuxV+Nwf
x
>^Si/t
sed (需要至少一行输入) QC X8IIHG
sed -ne '1s/.*/Hello, world!/p' r%.do;5
T9u <p=p
ea~:}!-P
Smalltalk OBP1B@|l$+
Transcript show: 'Hello, world!' <]b7ZF]
FDv+*sZ
FN%m0"/Z{t
SNOBOL >B2q+tA
OUTPUT = "Hello, world!" E
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