“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。 pP-L{bT
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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》。 *ZkOZ
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以下是用不同语言写成的Hello World程序的几个例子: ]>/oo =E
Ada "8$Muwm
with Ada.Text_Io; use Ada.Text_Io; jX7;hQ+P
procedure Hello is ^/ff)'.J
begin :@b=;
Put_Line ("Hello, world!"); D nl|B\
end Hello; 'WNq/z"X
tjLG$M1z`
v8"Zru
汇编语言 z8dBfA<z
'F%h]4|1
x86 CPU,DOS,TASM /g>]J70
MODEL SMALL XZ=%XB:?
IDEAL M?00n< vM
STACK 100H =B{B?B"r
\"a~~Koe
DATASEG );/p[Fd2]
HW DB 'Hello, world!$' e +Ikw1y"f
!lL~#l:F
CODESEG +ovT?CMo
MOV AX, @data R('\i/fy
MOV DS, AX e>UU/Ks
MOV DX, OFFSET HW ~}_S]^br
MOV AH, 09H Sa-" G`
INT 21H ?>1wZ
MOV AX, 4C00H i'B$Xr
INT 21H Ou_2UT
END 2U`!0~pod
v'Pbx
Nh01NY;
x86 CPU,GNU/Linux,NASM rMoz+{1A
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 58t_j54
;Enter this into "hello.asm" then type: ,`8:@<e
;"nasm -f elf hello.asm" $WiUoS
;"ld hello.o -o hello" ^KJi|'B
;"./hello" A6I^`0/
+V9 (4la
section .data ;data section declaration 4nXemU=
msg db 'Hello World!',0AH G '%ZPh89
len equ $-msg ;string length uf1s}/M
~J0r%P
section .text ;code section declaration t~|`RMn"
global _start ;entry point (start of execution) ?@^gpVK{
_start: mov edx,len ;string length "H9q%S,FH
mov ecx,msg ;string start 6"9(ce
KX
mov ebx,1 ;file handle: stdout #bS}?fj
mov eax,4 ;sys_write Us\Nmso
z
int 80h ;kernel system call t9.| i H
(+nnX7V?I
mov ebx,0 ;return value w5vzj%6i
mov eax,1 ;sys_exit DH"_.j
int 80h ;kernel system call 3fUiYI|&7
H~?7:K
BxiR0snf0q
x86 CPU,Windows,MASM32 KP`Pzx
.386 <OrQbrWQa
.model flat,stdcall h%5keiA
option casemap:none fRwr}n'
;Include 文件定义 XaaR>HljJ
include windows.inc q#F+^)DD [
include user32.inc Jv8VM\*
includelib user32.lib VHLt,?G
include kernel32.inc ,E8g~ZUY9
includelib kernel32.lib mMT\"bb'
;数据段 ba)hWtenH
.data n0)y|B#
szCaption db 'A MessageBox!',0 y,6KU$G
szText db 'Hello,world!',0 >x]ir
;代码段 8yybZ@
.code L/)eNZ
start: ] I5&'#%2
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK bduHYs+rq
invoke ExitProcess,NULL xx G>Leml
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <Wd_m?z
end start &{bNa:@
S
rhBU6K
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AWK 5'[yw:P-8
BEGIN { print "Hello, world!" } )1g\v8XT
_z\qtl~3
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BASIC /Ri-iC >
传统版BASIC(例如GWBASIC): 6%V#_]
~ymSsoD^
10 PRINT "Hello, world!" R8Dn
GR
20 END 0S\HO<~k
)>N=B 2P
或在提示符输入: lI3d
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Y pvFv-
?"Hello, world!":END {>3w"(f7o
Bw.?Me)mf|
现代版BASIC(例如Quick BASIC): keJ-ohv)
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Print "Hello, world!" of'H]IZ
u}7r\MnwK,
以下的语句在Quick BASIC中同样有效: !,~C
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? "Hello,world!" XvZ5Q
L>rW S-
Mn*5oH
BCPL uFG ;AY|
GET "LIBHDR" ]sqp^tQ`e
qxHsmGV
LET START () BE -3SRGr
$( ;I>77gi`]
WRITES ("Hello, world!*N") 9 LUk[V
$) +WvW#wpH
7'7o^>
!
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Befunge lWFm>DiLY
"!dlrow olleH">v 3V/f-l]X/
, kZQ$Iv+^(
^_@ 2\#~%D>[
xw3A |Aj?r
XeozRfk%J|
Brainfuck R7Ns5s3X
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< zeuSk|O
+++++++++++++++.>.+++.------.--------.>+.>. h[]3#
uvA 2`%T/
^3nB2G.ax
C 6M bMAh5>
#include <stdio.h> 8u Z4[
/?C6oj1
int main(void) ~{D:vj4>
{ *B+YG^Yu^
printf("Hello, world!\n"); X'5+)dj
return 0; u2 U4MV1C
} 7T?7KS
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EU()Nnm2
C++ ?D]T|=EZY
#include <iostream> u
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%/wfY Rp*
int main() 9z(h8H
{ @_?8I_\:
std::cout << "Hello, world!" << std::endl; cKAZWON8;v
return 0; j*jq2u
} #~ [mn_C
<PQ[N[SU
\JGRd8S[
C++/CLI `=#ry*E^:
int main() |9
4xRC
{ yXA]E.K!
System::Console::WriteLine("Hello, world!"); Xqas[:)7+
} LiD-su
D
MP`WU} 2
_ 3>|1RB
C# (C Sharp) $]iRfXv,l!
class HelloWorldApp XXZ$^W&
{ @_Ly^'
"
public static void Main() Pl[WCh
{ h_h6@/1l
System.Console.WriteLine("Hello, world!"); 0"M0tA#
} Uf-`g>
} DYCXzFAa
(9D,Ukw
3yIC@>&y(8
COBOL cWL7gv\|
IDENTIFICATION DIVISION. {%z}CTf#
PROGRAM-ID. HELLO-WORLD. jz$83TB-
bq`0$c%hN
ENVIRONMENT DIVISION. W$Zc;KRz$0
LL=nMoS
DATA DIVISION. N%`Eq@5
"a>a
"Ei
PROCEDURE DIVISION. vM2\tL@"
DISPLAY "Hello, world!". J Y@x.?N5$
STOP RUN. s)|l-I
O:G-I$F|
!yX4#J(
Common Lisp pmi`Er
(format t "Hello world!~%") x^]1m%
7ip(-0
?28aEX_w
DOS批处理 \)T4NN
@echo off &:*|K xX
echo "Hello, world!" NYZI;P1DA
8fs::}0
#&c}in"!
Eiffel }!g^}BWWp
class HELLO_WORLD cc$+"7/J^c
REwZ41
creation w`OHNwXh#I
make oGi{d5
feature cX/["AM
make is Qws#v}xF
local k`Ifd:V.y
io:BASIC_IO 1~P ^g`
do (1b%);L7
!!io )|@UY(VZ^
io.put_string("%N Hello, world!") nxh9'"th
end -- make ~WG#Zci-
end -- class HELLO_WORLD !ZlNPPrq}
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yasKU6^R'
Erlang 1(z+*`"WB&
-module(hello). .EUOKPK4W
-export([hello_world/0]). YG6Kvc6T
y:8*!}fR
hello_world() -> io:fwrite("Hello, World!\n"). Zcn,_b7
f<0nj?
Ju7nvxC
Forth :S5B3S@|
." Hello, world!" CR i
bwnK?ZA
?(CMm%(8
3#Hx^H
Fortran e
RjpR?!\
WRITE(*,10) )v67wn*1A
10 FORMAT('Hello, World!') H A(e
STOP Lqv5"r7eV
END Q!VPk~~(
xl$#00|y
Y-WYQ{
HTML Q[k7taoy
<HTML> ~IKPi==@,
<HEAD> PDcZno?
<TITLE> Hello World! </TITLE> 6 4da~SEn
</HEAD> Y@Kp'+t(!
<BODY> W@x
UR-}51
<p>Hello World!</p> z_p/.kQ'5
</BODY> nEM>*;iE
</HTML> vWwnC)5
fH7o,U|
kEE8cW3
HQ9+ )5j%."
H dEp?jJP$;
}X3SjNd q
!:mo2zA
INTERCAL 0VB~4NNR
PLEASE DO ,1 <- #13 +`x8[A)-
DO ,1 SUB #1 <- #238 !s]LWCX+|
DO ,1 SUB #2 <- #112 QMfa~TH#p
DO ,1 SUB #3 <- #112 j [h4F"`-
DO ,1 SUB #4 <- #0 r^k:$wJbRK
DO ,1 SUB #5 <- #64 5Qik{cWxBq
DO ,1 SUB #6 <- #238 GiN\nu<!
DO ,1 SUB #7 <- #26 ccJ@jpXI
DO ,1 SUB #8 <- #248 >]k'3|vV
DO ,1 SUB #9 <- #168 yjVPaEu]aU
DO ,1 SUB #10 <- #24 oP".>g-.
DO ,1 SUB #11 <- #16 [2!K 6
DO ,1 SUB #12 <- #158 :sBg+MS
DO ,1 SUB #13 <- #52 g(Jzu'
PLEASE READ OUT ,1 v 6?{g
PLEASE GIVE UP hb"t8_--c
gC#PqK~
|Y!#`
Java z2&SZ.mk
public class Hello +?~'K&@
{ u4=j!Zb8}
public static void main(String[] args) e1X*}OI
{ z1ltc{~Z
System.out.println("Hello, world!"); }06
} Yo
c N@s
} #s1O(rLRl
vvLm9Tw
Poacd;*
JSP rs3Uk.Z^'
<%
M? oK@i
out.print("Hello, world!");
tqE LF
%> Dqe/n_Z
W$0<a@
OCF\*Sx
MIXAL |Q^ZI
TERM EQU 19 the MIX console device number 3Bz0B a
ORIG 1000 start address RV|: mI
START OUT MSG(TERM) output data at address MSG vS:%(Y"!<
HLT halt execution ;PJWd|3
MSG ALF "MIXAL" 0sRby!
ALF " HELL" A}sb2P
ALF "O WOR" $L.0$-je4
ALF "LD " ZN|DR|cUY
END START end of the program 2i4FIS|z0
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0CxQ@~ttl
Nuva ky#d`
<..直接输出..> d^IOB|6Q
Hello, world! N
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dfe 9)m>
<..或者..> /b20!3
glh2CRUj
<. "';'*x
// 不带换行 z_eP
? "Hello, world!" 5,'?NEyw
1<^"OjQ
// 或者 /J8AnA1
0i9y-32-
// 带换行 jNV2o
?? 'Hello, world!' #JGy2Hk$^
.> W?G4\ubM3<
abUn{X+f~
l'VgS:NT
OCaml wYhWRgP
let main () = V{fYMgv
print_endline "Hello world!";; BUv;BzyV
~-Rr[O=E
>/EmC3?b!
Pascal _h7+.U=
program Hello; 46*o_A,"
begin tn;e
PcU
writeln('Hello, world!'); 6z"fBF
end. cn=~}T@~Z
l2=.;7IV
=A<kDxqH
Perl &TSt/b/+W
#!/usr/local/bin/perl -[v:1\Vv
print "Hello, world!\n"; y%=\E
:N%cIxrqP
/H@k;o
PHP <dDGV>n4;
<?php }
O9q$-8!
print("Hello, world!"); OibW8A4Z1
?> ji`N1e,l
BXaA#} ;e
,>2ijk#
Pike EKk~~PhW 8
#!/usr/local/bin/pike
n
w @cAv
int main() e6k}-<W*q
{ |t|+pBB
write("Hello, world!\n"); W{Ie(hf
return 0; 8^$}!9B~JZ
} D*`|MzlQ
;or(:Yoc-
{LY$
PL/I :HRJ49a
Test: procedure options(main); zrE
~%YR
declare My_String char(20) varying initialize('Hello, world!'); on(F8%]zE
put skip list(My_String); z}s0D]$+x
end Test; 95aa
2;5EH0
WO)rJr!C
Prolog 6t
TLyI$+
goal tk<dp7y7
write("hello,world!"). ]OM|Oo
06pLa3oi
G|Ic6Sd
Python c&3
]%urL
#!/usr/local/bin/python vML01SAi
print "Hello, world!" ,2[laJ
Tm_AoZH
sZPPS&KoP3
REXX RERum
say "Hello, world!" zVZZdG~8
Jj|HeZ1C f
wtetB')yD
Ruby B=7bQli}
#!/usr/bin/ruby q+3Z3v
print "Hello, world!\n" /Bid:@R
. 3=WE@M
y^pk)`y8
Scheme {~k/xM.-
(display "Hello, world!") m7^aa@^m
(newline) z;GnQfYG
Eg 5|XV
&iR>:=ksN
sed (需要至少一行输入) 6/wAvPB$
sed -ne '1s/.*/Hello, world!/p' ^u:7U4
A0cC)bd&
._~_OVU
Smalltalk (X,Ua+{
Transcript show: 'Hello, world!' /0d_{Y+9
vO%n~l=
n(/(F`
SNOBOL R(kr@hM
OUTPUT = "Hello, world!" 5 1@V""m
END 0V"r$7(}
:qc@S&v@]
XN5EZ#
SQL 8*H-</ =
create table MESSAGE (TEXT char(15)); vmvk
insert into MESSAGE (TEXT) values ('Hello, world!'); EJ.oq*W!*J
select TEXT from MESSAGE; hewX)
drop table MESSAGE; x
%L2eXL
1<fS&)^W
Tw)nFr8oF]
Tcl `Ff3H$_*
#!/usr/local/bin/tcl kTAb
<
puts "Hello, world!" ixw3Z D(>+
&xgMqv2/
s-}|_g.Pt
TScript s&iM.[k
? "Hello, world!" bA@!0,m
tU>wRw=d
G6w&C^J*8>
Turing A9Q!V01_
put "Hello, world!" F.HD;C-;(
|[CsLn;
xpxUn8.
UNIX-style shell <MB]W`5
程序中的/bin/sh可改为您使用的shell 9s6@AJf
LU l6^JU
#!/bin/sh :@r E&
echo 'Hello, world!' XpdDIKMmE
#25Z,UU
6B)(kPW
GUI =\B{)z7@6D
9
#TzW9
Delphi {2vk<
program HelloWorld; lTvI;zy
uses ,3.E]_3xX
Dialogs; L)a8W
begin OKNA36cU'
ShowMessage('Hello, World!'); YFv/t=`
end. FAfk;<#'n+
x9Y1v1!5Pu
$HF. 02{|
Nuva +wXrQV
<. dFS>uIT7X
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) +(x^5~QX
.> &M,a+|yuY
cTCo~Pk4
l)[\TD
Visual Basic n1 =B
MsgBox "Hello, world!" "=@b>d6U+
'或者 n .ZLR=P4
Print "Hello, world!" SG_^Rd9
D
:'91qA%Wr
D*6v.`]X
Visual FoxPro mcy\nAf5%
? "Hello, world!" '$YB
-
+>/ariRr
KtchKpv
X11 =dx!R ,Bw
用一个程序 E0!}~Z)
vH%AXzIA
xmessage 'Hello, world!' MP(R2y
btHN
用C++和gtkmm 2 j5,1`7\7B
Umjt~K^Z
#include <iostream> veAg?N<c
p
#include <gtkmm/main.h> C8rD54A'M
#include <gtkmm/button.h> mE'y$5ZxY
#include <gtkmm/window.h> ye:pGa w
using namespace std; /x,gdZPX
rZ2X$FO@
class HelloWorld : public Gtk::Window b6:A-jb*I
{ (+68s9XS7
public: px %xoY
HelloWorld(); 26PUO$&b.
virtual ~HelloWorld(); ^E\{&ka