“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。 :YJ7J4
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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》。 -90ZI1O`
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以下是用不同语言写成的Hello World程序的几个例子: qtwT#z;Y
Ada ;[OJ-|Q
with Ada.Text_Io; use Ada.Text_Io; Fy_<Ui
procedure Hello is itC *Z6^
begin %I|+_ z&x
Put_Line ("Hello, world!"); hKH$AEHEU}
end Hello; Ss<_K>wk
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IGK_1@tq
汇编语言 Y0L5W;iM
Z}K.^\S9
x86 CPU,DOS,TASM 1Oca@E\Z.
MODEL SMALL ^Azt.\fMX
IDEAL & GzhcW~
STACK 100H @RoRNat
_Xk03\n6
DATASEG L VU)W^
HW DB 'Hello, world!$' n<%=~1iY+
*t?~)o7
CODESEG J+cAS/MYX
MOV AX, @data SZK)q
MOV DS, AX 4gv.E 0Fo
MOV DX, OFFSET HW yYG3/Z3u5
MOV AH, 09H A1|7(Sow
INT 21H A^4kYOe
MOV AX, 4C00H EBIa%,
INT 21H ~D-JZx
END fNAo$O4cm
0[2BY]`Z.
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x86 CPU,GNU/Linux,NASM X #p o|,Q
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). G>[
NZE
;Enter this into "hello.asm" then type: qr'x0r|<>
;"nasm -f elf hello.asm" \C+*loLs
;"ld hello.o -o hello" aJy>
;"./hello" hs{&G^!jo
<w UD
section .data ;data section declaration (?!(0Ywbg
msg db 'Hello World!',0AH qlz9&w
len equ $-msg ;string length /jjW/lr
Ere?d~8
section .text ;code section declaration o8};e
global _start ;entry point (start of execution) 1Es*=zg
_start: mov edx,len ;string length Y0Hq+7x
mov ecx,msg ;string start +(=0CA0GE
mov ebx,1 ;file handle: stdout Qc&-\kQ:$u
mov eax,4 ;sys_write SLQ\Y%F
int 80h ;kernel system call SG
dfhno;
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mov ebx,0 ;return value 2,8/Cb
mov eax,1 ;sys_exit *l> [`U+
int 80h ;kernel system call ;T5,T
6Q.{llO
~),;QQ,
x86 CPU,Windows,MASM32 r
1l/) ;
.386 l50|`
6t
.model flat,stdcall 08Pt(kzNA
option casemap:none ,Lt~u_ lve
;Include 文件定义 .g/ARwM}
include windows.inc C@TN5?Z
include user32.inc {[M0y*^64$
includelib user32.lib o~OwE7H)A
include kernel32.inc z`emKFbv
includelib kernel32.lib >%uAQiU
;数据段 :rz9M@7
.data 3~[`[4n^
szCaption db 'A MessageBox!',0 p@?7^nIR*u
szText db 'Hello,world!',0 3d,-3U
;代码段 <&qpl0U)Y
.code P3>..fhoW
start: 3bbp>7V!
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK &Q-[;
invoke ExitProcess,NULL H
Z;ZjC*
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> la
G$v-r
end start YBYB OH
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dWsT Jyx~
AWK E^Q@9C<!d
BEGIN { print "Hello, world!" } j!zA+hF(
YMc8Q\*B
X+]L-o6I2
BASIC rao</jN.9
传统版BASIC(例如GWBASIC): ?1GY%-
^lHb&\X
10 PRINT "Hello, world!" 1fz*SIjG
20 END -M7K8
`ir&]jh.A
或在提示符输入: Yw$a{5g
{l&Ltruhz
?"Hello, world!":END l^DINZU@
>.DF"]XM
现代版BASIC(例如Quick BASIC): +R|U4`12
k1ipvKxp:8
Print "Hello, world!" l,*yEkU
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以下的语句在Quick BASIC中同样有效: 5SoZ$,a<e
NoFs-GGGh
? "Hello,world!" dO>k5!ge|:
<Vz<{W3t
i0k+l
BCPL hnp`s%e,
GET "LIBHDR" XXa(305
a{<p'_
LET START () BE >Y7r\
$( C>*5=p|T
WRITES ("Hello, world!*N") 6-mmi7IfO
$) DRH'A!r!
=?=)s
^y:FjQC:
Befunge GE%2/z p
"!dlrow olleH">v u~" siH
, UppBnw
^_@ xj0cgK|!
PV?]UUc'n<
m! rwG(
Brainfuck F0@Qgk]\
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< \n[
392
+++++++++++++++.>.+++.------.--------.>+.>. ?k
[%\jq{a
3LKB;
CD^CUbGk
C c]6V"Bo}A
#include <stdio.h> %4j&H!y-w;
;knd7SC
int main(void) |J:$MX~
{ RS'} nY}
printf("Hello, world!\n"); HR;/Br
return 0; uA~YRKer
} D+f'*|
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G7
1U 7
C++ sa_R$ /H
#include <iostream> u FMIY(vB
DC&A1I&
int main() /@Ez" ?V2
{ C1V# ?03eI
std::cout << "Hello, world!" << std::endl; tC2N>C[N
return 0; p ss6Oz8
} 0eFb?Z0]
GP* +
BEln6zj
C++/CLI bFSlf5*H
int main() pFpZbU^
{ (Up'$J}
System::Console::WriteLine("Hello, world!"); L{=l#vu
} N;<//,
<D;MT96SG
"LOnDa7E^
C# (C Sharp) J2r1=5HS
class HelloWorldApp Yrpxy.1=F5
{ 'V&2Xvl%
public static void Main() 7U,k 2LS
{ \yM-O- {
System.Console.WriteLine("Hello, world!"); )7W6-.d
}
;;@IfZ ?j
} &} ,*\Oj
?L=A2C\_-
)!cI|tovs
COBOL \ EZ+#3u
IDENTIFICATION DIVISION. NH'iR!iGo
PROGRAM-ID. HELLO-WORLD. I0DM=V>;
a'uU,Eb}#w
ENVIRONMENT DIVISION. }'lNi^"XL
9mQ#L<Ps
DATA DIVISION. sMH#BCC
,>u=gA&}
PROCEDURE DIVISION. ob'n{T+lZ
DISPLAY "Hello, world!". *xcP`
STOP RUN. ;W0]66&
+vz`go
2/@D7>F&g
Common Lisp >\ZR*CS
(format t "Hello world!~%") k5@d! }#c
8a9RML}G<
=<{ RX8
DOS批处理 {rC~P
@echo off S8%n .<OB
echo "Hello, world!" kg3ppt
^n9a" qz
,-@5NY1q
Eiffel 7UKYmJk.
class HELLO_WORLD *zy'#`>
RlsVC_H\
creation 6
mO"
make |) Pi6Y
feature 7 jjU
make is VFO\4:.
local [?KJ9~+0
io:BASIC_IO t+Z`n(>
do /BpxKh2p
!!io 1TjZ#yP%1
io.put_string("%N Hello, world!") <*u C
end -- make bD<qNqX$
end -- class HELLO_WORLD }E; F)=E
S5_t1wqBJ
wVqd$nsY"
Erlang :
,p||_G&
-module(hello). F}U5d^!2
-export([hello_world/0]). Fc8E Y*
JDv-O&]
hello_world() -> io:fwrite("Hello, World!\n"). ?+r!z
$b>}C= gt
-#?<05/C>
Forth qzK("d
." Hello, world!" CR xQu
eE{
/APcL5:=
wGJjA=C
Fortran ,+._;[k
WRITE(*,10) 5j eO"jB
10 FORMAT('Hello, World!') ]` ]g@v
STOP =Ikg.jYq&F
END frN3S
Km3&N
DA"}A`HfI
HTML zoP%u,XL
<HTML> @Z;1 g
<HEAD> F
Z!J
<TITLE> Hello World! </TITLE> ++8_fgM
</HEAD> lJ{V
<BODY> +;q.Y?
<p>Hello World!</p> mJC3@V
s
</BODY> PJgp+u<
</HTML> #U=;T]!'$
J!h^egP
phP>3f.T
HQ9+ ip``v0Nf
H ^bUxLa[.
Dag`>|my
6T+
INTERCAL GK{{ 7B
PLEASE DO ,1 <- #13 RY=1H
DO ,1 SUB #1 <- #238 Pxhz@":[
DO ,1 SUB #2 <- #112 z^W$%G
DO ,1 SUB #3 <- #112 LdTdQ,s<
DO ,1 SUB #4 <- #0 wAYB RY[
DO ,1 SUB #5 <- #64 C+%K6/J(
DO ,1 SUB #6 <- #238 lKKERO5+
DO ,1 SUB #7 <- #26 'r+PH*Mr
DO ,1 SUB #8 <- #248 zgKY4R{V
DO ,1 SUB #9 <- #168 v-`h>J!Nx
DO ,1 SUB #10 <- #24 "Xn%at4
DO ,1 SUB #11 <- #16 9"sDm}5%
DO ,1 SUB #12 <- #158 0a2@b"l
DO ,1 SUB #13 <- #52 cDV^8 R
PLEASE READ OUT ,1 VC-;S7k
PLEASE GIVE UP (j&A",^^S
Veji^-0E
rt4Z;
Java Zb''mf\
public class Hello g4&jo_3:p
{ $-vo}k%M
public static void main(String[] args) . L;@=Yg)
{ 'C?NJ~MN
System.out.println("Hello, world!"); Qw)9r{f
} }$gmK
} M>l^%`
N.j
"S'(i
|(% u}V?
JSP XnUO*v^]
<% `v nJ4*
out.print("Hello, world!"); ~]uZy=P? 5
%> D>sYPrf
.g% Y@r)=5
vtxvS3
MIXAL 0ys~2Y!eH
TERM EQU 19 the MIX console device number 1 W'F3
ORIG 1000 start address oq;'eM1,.
START OUT MSG(TERM) output data at address MSG ftZj}|R!
HLT halt execution @Doyt{|T
MSG ALF "MIXAL" =AOWeLk*G
ALF " HELL" Xl%0/o
ALF "O WOR" 9E1W|KE
ALF "LD " IA*KaX2S<
END START end of the program GAEO$e:
rZwB>c
eN-au/kN
Nuva BC/_:n8O
<..直接输出..> 9=+-QdX+0]
Hello, world! S>_27r{
;-@=
<..或者..> ;D2E_!N
dt
|4b)>8TL/
<. SR7j\1a/2A
// 不带换行 Fu _@!K
? "Hello, world!" #a9_~\s
|3eGz%Sd
// 或者
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TbhH&kG)1
// 带换行 ;+Yi.Q/\
?? 'Hello, world!' MagMZR
.> G?hK9@ |v
h##WA=1QZ
kv?|'DN
OCaml -{g~TUz
let main () = <GIwRVCU
print_endline "Hello world!";; raB+,Oi$G
0[a}n6XTk
cFZCf8:zB
Pascal %3=J*wj>D
program Hello; NHaMo*xQ
begin TD,nIgH`
writeln('Hello, world!'); J|QiH<
end. >Pal H24]
JMyTwj[7
f3PMVf:<
Perl z&+
zl6
#!/usr/local/bin/perl d;G~hVu
print "Hello, world!\n"; m(47s
@Hjea1@t
8X7{vN_3K
PHP #hxyOq,
<?php sQ1jrkm
print("Hello, world!"); eaZQ2
?> 7'w0
Q/^A #l[
sic$uT
Pike N:BL=}V
#!/usr/local/bin/pike KSqTY>%fnv
int main() | {P|.
{ F=wRkU
write("Hello, world!\n"); :Jxh2
return 0; $\\lx_)
} {aDFK;qG.
4zc<GL3[
45+{nN[
PL/I @h?crJ6$
Test: procedure options(main); &a)vdlZSE=
declare My_String char(20) varying initialize('Hello, world!'); kU*{4G|6
put skip list(My_String); grcbH
end Test; >SI<rR[~%
e>H:/24
QGPw2Q
Prolog ;4~U,+Av
goal <+]f`c*Z
write("hello,world!"). q&si%
_PXdzeI.
3C^1frF
Python ~!:0iFE&H
#!/usr/local/bin/python _N#&psQzw
print "Hello, world!" vK$^y^
2VgP
j
F5Blc
REXX (.X]F_*sc
say "Hello, world!" ,E*R,'w
le
.'pP@
k`YYZt]@
Ruby (Wj2?k/]
#!/usr/bin/ruby gR gog*z
print "Hello, world!\n" Px;Cg
6
;st\I
u?0d[mC
Scheme O.+9,4A(
(display "Hello, world!") "^rNr_
(newline) wyY*:{lZ
!~ rt:Z
4u1KF:g
sed (需要至少一行输入) sa#.l% #
sed -ne '1s/.*/Hello, world!/p' %u!XzdG
$:vkX
n^9 ?~
Smalltalk )|]dmQ-
Transcript show: 'Hello, world!' !{%G0(Dv
665[
tk?UX7F
SNOBOL >)#c\{c
OUTPUT = "Hello, world!" S*t%RZ~a
END AFm1t2,+;
Y
62r
AXW!]=?X
SQL n Wgv~{,x
create table MESSAGE (TEXT char(15)); 7TWNB{
K_
insert into MESSAGE (TEXT) values ('Hello, world!'); P]6}\
]~
select TEXT from MESSAGE; o$J6 ~dn
drop table MESSAGE; RUXCq`)"<
+x1/-J8_sg
0|Ucd
Tcl $99R| ^
#!/usr/local/bin/tcl PZOKrW
puts "Hello, world!" a(x?fa[D
v3^|"}\q5
8Qrpa o
TScript .iv3q?8.b
? "Hello, world!" ^eh/HnJs
HnZPw&*
^ddO&!U
Turing <^><3U`
put "Hello, world!" bLS&H[fK
Wmz`&