“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。 XO~^*[K
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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》。 <j3HT"^[D
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以下是用不同语言写成的Hello World程序的几个例子: hO@3-SRa,k
Ada yv4PK*
with Ada.Text_Io; use Ada.Text_Io; KZfRiCZ
procedure Hello is 0*x?
begin 7b2<,
.E
Put_Line ("Hello, world!"); `_^=OOn
end Hello; VW`=9T5%@
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汇编语言 ~U+'3.Wo
0|;=mYa4M
x86 CPU,DOS,TASM rNyK*Wjt
MODEL SMALL K.m[S[cy
IDEAL U~t(YT
STACK 100H cpnwx1q@
,m]q+7E
DATASEG X-FHJ4
HW DB 'Hello, world!$' #?6RoFgMe
]!:Y]VYN)\
CODESEG rtE,SN
MOV AX, @data x)L@xQ
MOV DS, AX IyP].g1"U
MOV DX, OFFSET HW X&Lt?e,&
MOV AH, 09H /Ql}jSKi
INT 21H ]#n4A|&H
MOV AX, 4C00H NLY5L7
INT 21H K_n%`5
END 3v U (4}@
P$I\)Q H
=C)1NJx&~
x86 CPU,GNU/Linux,NASM 5K{h)* *5
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). OhEL9"\<
;Enter this into "hello.asm" then type: -m/4\D
;"nasm -f elf hello.asm" qDAjW)w
Jp
;"ld hello.o -o hello" T<)z2Bi
;"./hello" M7 !"
t
q|J]
section .data ;data section declaration \/v$$1p2
msg db 'Hello World!',0AH *Fws]y2t~
len equ $-msg ;string length sKO
;p
)zo ;r!eP
section .text ;code section declaration '%N)(S`O7P
global _start ;entry point (start of execution) KL4/"$l]
_start: mov edx,len ;string length Q@n k T1o
mov ecx,msg ;string start "g-NUl`'
mov ebx,1 ;file handle: stdout !&[4T#c
mov eax,4 ;sys_write X2v'9 x
int 80h ;kernel system call Z]BRMx
gBu4`M
mov ebx,0 ;return value lV'83
mov eax,1 ;sys_exit =w-H )
int 80h ;kernel system call q?&&:.H"?5
i;Y^}2
n TG|Isa
x86 CPU,Windows,MASM32 =C|^C
.386 J~.kb k
.model flat,stdcall qa6~N3*
option casemap:none f6nltZ
;Include 文件定义 6! 'Xo:p
include windows.inc fZ$2bI=
include user32.inc E"=$p$k
includelib user32.lib Sdp1h0E}7=
include kernel32.inc }q9f,mz
includelib kernel32.lib <lR8MqjM_
;数据段 Hr$5B2'
.data .U_=LV]C
szCaption db 'A MessageBox!',0 d%bL_I)
szText db 'Hello,world!',0 tO7{g
;代码段 ~vmY2h\
.code )
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start: soF ^G21N
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK g 7X>i:
invoke ExitProcess,NULL |:z%7J3wP
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Yo:&\a K[
end start tPsU7bFk
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7[LC*nrr
AWK :Kiu*&{
BEGIN { print "Hello, world!" } &kvVMnok
h 8s*FI
u2QJDLMJv
BASIC J++D\x#@
传统版BASIC(例如GWBASIC): D#0}/
xXZN<<f59
10 PRINT "Hello, world!" X*KT=q^?n
20 END |4vk@0L
P;Ox|
或在提示符输入: WlUE&=|Oz2
#Z : r
?"Hello, world!":END xpz
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P}gh-5x
现代版BASIC(例如Quick BASIC): #LiC@>
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Print "Hello, world!" \B)<<[ $
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以下的语句在Quick BASIC中同样有效: v|6fqG+Q\
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? "Hello,world!" ?=/l@ d
VMp6s%m
DcS~@ ;
BCPL 6%TV X
GET "LIBHDR" ''G@n*
^s5)FdF8
LET START () BE D$\ EZ
$( $3>|RlxYA
WRITES ("Hello, world!*N") Go4l#6
$) 5zU$_ M
9V~yK?
g:HIiGN0Ic
Befunge 2sngi@\
"!dlrow olleH">v P+[R 0QS
, 8MIHp[vm%
^_@ Ne%X:h
T~la,>p|}
c}A^0,"z>
Brainfuck AOpfByw
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< fOfp.`n
+++++++++++++++.>.+++.------.--------.>+.>. FwyPmtBj
Hogr#Sn2
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C ec|IT0;
#include <stdio.h> {PZe!EQ
3iB8QO;pp
int main(void) NJ.kT uk
{ <T['J]k%
printf("Hello, world!\n"); Ks4TBi&J
return 0; nN[,$`JD,
} [yz;OoA:;
ws=y*7$y
Mvux=Ws
C++ H_9~gi
#include <iostream> tZJKB1#WbP
1*Z}M%
int main() .$Y[>9
{ ^-DK<jZ^
std::cout << "Hello, world!" << std::endl; 46b.= }
return 0; \>+gZc]an
} K|iNEhuc
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B$)KZR(u
C++/CLI `+U-oqs
int main() TWy1)30x
{ il:""x7^y
System::Console::WriteLine("Hello, world!"); N3,EF1%
} l!
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&kP>qTI^p~
M`bK
C# (C Sharp) Q,>AT$|
class HelloWorldApp GE>&fG
{ ;I9D>shkc
public static void Main() H=0Y4 T@)T
{ [.2>=3T
System.Console.WriteLine("Hello, world!"); fSj^/>
} f.!cR3XgV
} 74Lq!e3hMF
h-<+Pj c
qu?D`29
COBOL t JJaIb6Xj
IDENTIFICATION DIVISION. }RXm=ArN
PROGRAM-ID. HELLO-WORLD. dme_Ivt
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ENVIRONMENT DIVISION. ,$*$w<
'E9\V\bi
DATA DIVISION. Q WOd&=:
G*ecM`Bl
PROCEDURE DIVISION. Yt&^i(
DISPLAY "Hello, world!". DwoO([&I
STOP RUN. {&xKSWNc
\2uQ"kJC
nfc&.(6x<
Common Lisp Jg@PhN<9
(format t "Hello world!~%") ALhu\x>AY
;%Qu;FtC
xand%XNv
DOS批处理 J5429Soo
@echo off dH8H<K~
echo "Hello, world!" 9T)-|fja_
}psJ'aiG*
.Ir 5gz
Eiffel =V(I
class HELLO_WORLD gVO[R6C5C
F;kNc:X`)
creation !iMsTH<
make 5@?P 8
feature 8xLvpgcZ
make is leiP/D6s
local <}G7#xg
io:BASIC_IO `w2hJP
do 90;[5c
!!io }.x?$C+\"
io.put_string("%N Hello, world!") a(F%M
end -- make ='a$>JVJ5
end -- class HELLO_WORLD XSXS;Fh)
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Erlang (Ori].{C.J
-module(hello). kA fkQy(~
-export([hello_world/0]). 5MT$n4zKu
p;g$D=2
hello_world() -> io:fwrite("Hello, World!\n"). :dK/}S0
4\3Z$%2^LZ
|*Hw6m
Forth <yBZsSj
." Hello, world!" CR PC/Oo~Gx
woQYP,
3s" Rv@
Fortran [*@"[u
WRITE(*,10) 4;x{@Ln
10 FORMAT('Hello, World!') UE5T%zd /
STOP S-*4HV_l
END tv5G']vO\
6Z0@4_Y@B6
ml\A)8O]j/
HTML +Uq$'2CT
<HTML> 3V2"1Ic
<HEAD> ^As^hY^p
<TITLE> Hello World! </TITLE> >HXT:0
</HEAD> $o0o5 ^Z-
<BODY> n)gzHch
<p>Hello World!</p> ) m[0,
</BODY> $)mK]57
</HTML> ckS.j)@.c
-m3O\X
V^[o{'+
HQ9+ ;~3CuN8
H 9ELLJ@oNC
82{Lx7pI
CtfI&rb[
INTERCAL #3leMZ6
PLEASE DO ,1 <- #13 Z+x,Awq
DO ,1 SUB #1 <- #238 |\Nu+w
DO ,1 SUB #2 <- #112 !ffdeWHR
DO ,1 SUB #3 <- #112 {%*,KB>b
DO ,1 SUB #4 <- #0 2Gd.B/L6
DO ,1 SUB #5 <- #64 L TzD\C'
DO ,1 SUB #6 <- #238 vWc =^tT
DO ,1 SUB #7 <- #26 )l~:Puvh
DO ,1 SUB #8 <- #248 sA[hG*#/S
DO ,1 SUB #9 <- #168 N*y09?/h
DO ,1 SUB #10 <- #24 E0[ec6^qwY
DO ,1 SUB #11 <- #16 q,(U 8
DO ,1 SUB #12 <- #158 mr&nB
DO ,1 SUB #13 <- #52 [> Q+=(l
PLEASE READ OUT ,1 u1R_u9
PLEASE GIVE UP x\T 9V~8a
Q/xT>cUd
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Java ]c4?-Vq%u
public class Hello gMS-mkZ
{ 3 -Nwg9U
public static void main(String[] args) Gm~jC <
{ ErnjIx:
System.out.println("Hello, world!"); L)p*D(
} kZ~ 0fw-
} <b!nI
N
qbrY5;U
5)bf$?d
JSP t"4RGO)jh
<% yhxen
out.print("Hello, world!"); %5Q5xw]w3
%> a\;Vly;
GgwO>[T
Sc#B-4m
MIXAL kK\G+{z?
TERM EQU 19 the MIX console device number N8S!&*m
ORIG 1000 start address 9.)*z-f$
START OUT MSG(TERM) output data at address MSG '#pY/,hVB
HLT halt execution Myaj81
MSG ALF "MIXAL" o_R<7o/d|
ALF " HELL" 'RZ=A+% X
ALF "O WOR" 3c#oK
ALF "LD " >zx]%
W
END START end of the program R9bsl.e
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HGM ?
?=
Nuva O<}3\O )G(
<..直接输出..> ZFYv|2l
Hello, world! .LMOmc=(
B /q/6Pp
<..或者..> IdTatE|^
HGIPz{/5U
<. {S[+hUl
// 不带换行 -hL 0}Wy$N
? "Hello, world!" q=Xd a0c
742sqHx
// 或者 a_}k^zw(
=)QtE|p,77
// 带换行 {<$ D|<S
?? 'Hello, world!' %8C,9q
.> <j\osw1R
max 5s$@
TNun)0p
OCaml {P/ sxh:e
let main () = V;}kgWc1
print_endline "Hello world!";; V}=%/OY?
T .#cd1b
k_d)
Pascal [=/Yo1:v
program Hello; 9NzK1V0X
begin ;6+e !h'1
writeln('Hello, world!'); =T7lv%u
end. Qg9*mlm`
5@ c/,6l
n@1;5)&k~
Perl q-?
k=RX`
#!/usr/local/bin/perl PH!^ww6
print "Hello, world!\n"; 4sJM!9eb[
-o:
ifF|
'OEh'\d+x
PHP i*ibx;s-
<?php 3jR>
print("Hello, world!"); JdYmUM|K/c
?> d OG]Yjc
n{Ce%gy
uO]^vP]fT
Pike 7
k:w3M
#!/usr/local/bin/pike U-h'a:
K
int main() Ebk9[=
{ KkD.n#A
write("Hello, world!\n"); ^lw0}
i
return 0; WC0gJy
} ]\TYVv)
KH=4A-e,0
hKx*V"7/#\
PL/I
PeU>h2t
Test: procedure options(main); %5 [,U)X"
declare My_String char(20) varying initialize('Hello, world!'); '>"riEk
put skip list(My_String); m%$GiNs}
end Test; 0;J#".(KQ
8VWkUsOoI
"K Or)QD/
Prolog S{uKm1a
goal &Y`V A
write("hello,world!"). H]I^?+)9
<q}w, XU
PJ$C$G
Python !\'NBq,
#!/usr/local/bin/python KCDbE6
print "Hello, world!" LA +BH_t&
7A,QA5G]C
n8K FP
REXX S`w_q=-^8
say "Hello, world!" h=a-~= 8
E:7R>.g
mQ$a^28=qR
Ruby EdC^L`::
#!/usr/bin/ruby Jm#mC
print "Hello, world!\n" }Cs.Hm0P
r}>q*yx:
~k(4eRq
Scheme 3AQu\4+A
(display "Hello, world!") a ](Jc)
(newline) t%k1=Ow5i
.,vF%pQ
M94zlW<
sed (需要至少一行输入) 3QZ~t#,7ij
sed -ne '1s/.*/Hello, world!/p' O>vbAIu
tMy<MO)Ei
e6
&-f
Smalltalk sJ3O ]
Transcript show: 'Hello, world!' xPcH]Gs^b
J$+K't5BZ
U??T>
SNOBOL )NjxKSiU@
OUTPUT = "Hello, world!" FS+v YqwK
END TXH9BlDn
g %e"K nU
5eL_iNqJM
SQL Qnr7Qnb
create table MESSAGE (TEXT char(15)); VX'cFqrK3
insert into MESSAGE (TEXT) values ('Hello, world!'); NA/hs/ '
select TEXT from MESSAGE; ;$FpxurX
drop table MESSAGE; hQFF%xl
N!=$6`d
ZC!GKWP2
Tcl <+r<3ZBA
#!/usr/local/bin/tcl qX_(
M2oLU
puts "Hello, world!" $D%[}[2
+G.F'
RZL:k;}5
TScript mI4)+8SUu
? "Hello, world!" r5s$#,O/&Q
l2.Lh<G
Vi:<W0:
Turing )a;ou>u
put "Hello, world!" KD(}-zUs
O_~vl m<#
C)H1<Br7
UNIX-style shell +\D?H.P
程序中的/bin/sh可改为您使用的shell "Vw;y+F}
WU:r:m+
>
#!/bin/sh VNggDKS~K
echo 'Hello, world!' :enmMB#%
? CabVj-r
OZCbMeB{+J
GUI IPTEOA<M[
q\I2lZ
Delphi y]YUuJ9a
program HelloWorld; t Urwg
uses [@4.<4Y
Dialogs; Dpf"H
begin I5$]{:L|9
ShowMessage('Hello, World!'); Ojwhcb^
end. iH;IXv,b3
=)O%5<Lwx
Y5&mJp\G
Nuva +#wh`9[wBt
<. H%&e[PU
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) C%LXGMt
.> p2)563#RS
pIbm)-
&}."sGK
Visual Basic EZw<)Q
MsgBox "Hello, world!" [(d))(M$|
'或者 PSR21;
Print "Hello, world!" xkPH_+4i8
>`S $(f
<5fb,@YN
Visual FoxPro MzP
q(`W
? "Hello, world!" ^:Hx .
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