“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。 kl}Xmw{tJ
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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》。 *:hyY!x
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以下是用不同语言写成的Hello World程序的几个例子: j6g@tx^)'
Ada vl:J40Kfn
with Ada.Text_Io; use Ada.Text_Io; s8<gK.atl
procedure Hello is 4w$_]ke
begin ,gx)w^WTm
Put_Line ("Hello, world!"); 3[IJhR[
end Hello; #0"~G][#
+(?>-3_z
U \oy8FZ
汇编语言 kV&9`c+
aeP[+ I9
x86 CPU,DOS,TASM u[oUCTY
MODEL SMALL h#qN+qt}
IDEAL OqUr9?+
STACK 100H Bv9kSu9'~
5[gh|I;D
DATASEG !EBY@ Y1
HW DB 'Hello, world!$' 0Scm?l3
\9{F5Sz
CODESEG 6GL=)0Ah
MOV AX, @data T!2=*~A
MOV DS, AX T~xwo
MOV DX, OFFSET HW 3
hKBc0
MOV AH, 09H }< 5F
INT 21H C~4PE>YtTv
MOV AX, 4C00H %.HJK
INT 21H zsXpA0~3s
END
..W-76{
#8h;Bj
r8/l P}(F
x86 CPU,GNU/Linux,NASM aM=D84@
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ?GT@puJS-
;Enter this into "hello.asm" then type: @T-p2#&
;"nasm -f elf hello.asm" `>lzlEhKV
;"ld hello.o -o hello" (Ddp|a"b
;"./hello" .12aUXo(
</"4 zD|
section .data ;data section declaration $_;e>*+x
msg db 'Hello World!',0AH 1wj:aD?g
len equ $-msg ;string length e Y$qV}
Uh6 '$0
section .text ;code section declaration 1B=>_3_
global _start ;entry point (start of execution) O;9?(:_
_start: mov edx,len ;string length ExBUpDQc
mov ecx,msg ;string start 8wZf]_
mov ebx,1 ;file handle: stdout {QAv~S>4
mov eax,4 ;sys_write 2 QTZwx
int 80h ;kernel system call ZWUP^V
3gZ8.8q3
mov ebx,0 ;return value 3_$w|ET
mov eax,1 ;sys_exit *OjKcs
int 80h ;kernel system call An`3Ex[
GW^,g@%C
Orn0Zpp<z
x86 CPU,Windows,MASM32 ) c2_b
.386 1bnBji
.model flat,stdcall J^#:qk
option casemap:none iq$$+y,
;Include 文件定义 ,m3e?j@;r
include windows.inc -~{c
u47_
include user32.inc K2)!h.W
includelib user32.lib dl-l"9~;
include kernel32.inc b7`D|7D
includelib kernel32.lib `:NaEF?Sj
;数据段 d3Mva,bw<
.data G3i !PwW
szCaption db 'A MessageBox!',0 LNYKm~cN
szText db 'Hello,world!',0 =='Td[
;代码段 r,1e 'd:
.code }T2xXbU
start: k?B[>aQn.0
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK )!bUR\
invoke ExitProcess,NULL Uz7oL8
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> %r\n%$@_
end start 21X`h3+=
Dim>
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"r4AY
AWK N2r/ho}8
BEGIN { print "Hello, world!" } [lzN !!B!
op2Of<{h
H`hnEOyLp
BASIC xM >W2
传统版BASIC(例如GWBASIC): ZUm?*.g\^
\>. LW9
10 PRINT "Hello, world!" 1/+C5Bp*
20 END "I6P=]|b
/*FH:T<V
或在提示符输入: uA tV".
%8~Q!=*Iq
?"Hello, world!":END x&sI=5l
*D}0[|O
现代版BASIC(例如Quick BASIC): Qd _6)M-
Kb#4ILA
Print "Hello, world!" JCx
WWre
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以下的语句在Quick BASIC中同样有效: .T<=z
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? "Hello,world!" VZr>U*J[:
`_I@i]i^
QfM zF
BCPL ]B"'}%>ez
GET "LIBHDR" jdZ~z#`(!:
H(c72]@Vg
LET START () BE lf{e[!ML'
$( qU2~fNY
WRITES ("Hello, world!*N") k %e^kej
$) {R<Ea
@LV+
bK"SKV
i$G;f^Z!Y
Befunge XgN` 7!Z
"!dlrow olleH">v h+p*=|j`
, +CH},@j
^_@ K;?,FlH
c .3ZXqpI;
,u }XWV
Brainfuck $E<Esf$
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< fqX"Lus `=
+++++++++++++++.>.+++.------.--------.>+.>. y.5/?{GL
}VS3L_
;}/
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C ^'CPM6J
#include <stdio.h> n~"$^Vr
<?-YTY|
int main(void) w{[=l6L m
{ f0<hE2
printf("Hello, world!\n"); 2]GdD*
return 0; Wt)Drv{@ {
} ;AR{@Fu.
#/"8F O%~p
WV3|?,y]qm
C++ n55Pv3}C
#include <iostream> v(*C%.M)
9CA^B2u
int main() f.aSKQD
{ q{s(.Uq$&
std::cout << "Hello, world!" << std::endl; 0q>P~]Ow
return 0; U~h'*nV&
} xq-17HKs
7^wc)E^H
~!s-o|N_\
C++/CLI $vHU$lZ/W
int main() Zfk*HV#\
{ R1nJUOE4w^
System::Console::WriteLine("Hello, world!"); s]m o$ _na
} R>DaOH2K*
(8v7|Pe8
w%WF-:u7|
C# (C Sharp) }X x(^Zh
class HelloWorldApp kKD`rfyG\
{ #-pc}Y|<
public static void Main() 7g
R@$(1Z
{ 4&8Gr0C
System.Console.WriteLine("Hello, world!"); P\8@g U!uk
} FX9F"42@
} SH*C"
aQI^^$9g
2*(Z==XC7
COBOL u@ jX+\
IDENTIFICATION DIVISION. REZJ}%}/
PROGRAM-ID. HELLO-WORLD. S3L~~X/=
obdFS,JxxG
ENVIRONMENT DIVISION. [
W2fd\4
91Uj}n%
DATA DIVISION. iX0iRC6f
u6`=x$&
PROCEDURE DIVISION. /Q,{?';~
DISPLAY "Hello, world!". }2K $^uR
STOP RUN. kYzC#.|1
SyAvKd`g
/C/id)h>
Common Lisp
'9c2Q/
(format t "Hello world!~%") jiF?fX@
U4 13?Pe
'J,T{s1J
DOS批处理 IbcZ@'RSw
@echo off >^Se'SE]
echo "Hello, world!" Hm+ODv9
`ptj?6N-
n@ w^V
Eiffel dt~YW
class HELLO_WORLD ZeG_en ;
]skkoM
creation ?"z]A7<Hj
make mxb06u_
feature n}s~+USZX
make is 3Tn)Z1o
local 5 H#W[^s"
io:BASIC_IO \rVQQ|l
do 7'
S @3
!!io 0afei4i~N
io.put_string("%N Hello, world!") 3!5Ur&
end -- make O?<&+(uMTT
end -- class HELLO_WORLD _EF&A-kX|u
Oy 2+b1{
w.&1%X(k
Erlang '#(v=|J
-module(hello). )K'N(w
-export([hello_world/0]). aZEn6*0B
<C9 XX~
hello_world() -> io:fwrite("Hello, World!\n"). [F5h
""s]zNF}
`vc
"Q/
Forth b)9'bJRvU
." Hello, world!" CR S(\9T1DVe
-=.V
'
z,{<Nm7&F
Fortran Q5%#^ZdsTd
WRITE(*,10) wH~kTU2br
10 FORMAT('Hello, World!') 3Vp#a:
STOP 0flg=U9
END Ela-,(Glk
M-i_#EWP
&Q}*+Y]G
HTML rHP%0f9:
<HTML> &-5_f*{
<HEAD> _-5,zPR
<TITLE> Hello World! </TITLE> rp5(pV7*
</HEAD>
BUwONF
<BODY> RxMH!^
<p>Hello World!</p> o[H{(f1%
</BODY> :SxW.?[%u
</HTML> ;/j= Ny{9
[!%![E
8EVgoJ.
HQ9+ BL 3gKx.'
H a,78l@d(
(%O@r!{
l3nrEk
INTERCAL D1nq2GwS
PLEASE DO ,1 <- #13 w,R[C\#J
DO ,1 SUB #1 <- #238 P;pl,~
DO ,1 SUB #2 <- #112 2< hAa9y
DO ,1 SUB #3 <- #112 3BpZX`l*p
DO ,1 SUB #4 <- #0 D~o$GW%
DO ,1 SUB #5 <- #64 yjJ5P`j]
DO ,1 SUB #6 <- #238 /O]t R
DO ,1 SUB #7 <- #26 D5~n/.B"
DO ,1 SUB #8 <- #248 /x{s5P3
DO ,1 SUB #9 <- #168 p _d:eZ
DO ,1 SUB #10 <- #24 erO>1 ,4S
DO ,1 SUB #11 <- #16 GWvH[0
DO ,1 SUB #12 <- #158 J<Pw+6B~
DO ,1 SUB #13 <- #52 L. ]$6Q0
PLEASE READ OUT ,1 &sF^Fgg{
PLEASE GIVE UP r!,}Z=cGe
s&GJW@
|
udeoW-_
Java i|1^+;
public class Hello qYhs|tY)
{ D/h/Y) Y
public static void main(String[] args) Jjl`_X$CB
{ )Fb>8<%
System.out.println("Hello, world!"); 4[r/}/iGo
} fr!Pj(Q1
} Py{<bd
xnE|Umz
HNL42\Kz!
JSP f{0F|w<gf
<% GU Q{r!S
out.print("Hello, world!"); 4Z|vnj)Z
%> _{jjgQJ5
"`asFg
1He{v#
MIXAL @AYRiOodi
TERM EQU 19 the MIX console device number J~(Wf%jM~
ORIG 1000 start address 7^T^($+6s&
START OUT MSG(TERM) output data at address MSG zS]8V?`
HLT halt execution mw5?[@G-
MSG ALF "MIXAL" WL{(Ob
ALF " HELL" ?bw4~
ALF "O WOR" KR"M/#
ALF "LD " ~ H6r.:]
END START end of the program _4 cvX
){r2T1+-%
6ksAc%|5
Nuva I}2P>)K
<..直接输出..> )!tK[K?5
Hello, world! .Yw'oYnS
F ]O$(7*
<..或者..> ZtHm\VTS
lD{Aa!\
<. 1wW)tNKIF
// 不带换行 /k"`7`!
? "Hello, world!" &QNWL]
i_][PTH
// 或者 w{k)XY40sW
,YhdY6
// 带换行 Cye$H9 2
?? 'Hello, world!' }KhjlPhx
.> -uh(?])H
.@-$5Jw
qaim6a
OCaml u{z``]
let main () = ` ]Ppau
print_endline "Hello world!";; $Ci0I+5w
X,8<oX1r
TPhTaKCio
Pascal _ pO `
program Hello; Dup;e&9g
begin .d/:30Y
writeln('Hello, world!'); ) _ I,KEe
end. #.[AK_S5&
8.bKb<y
LI)!4(WH
Perl ,
*qCf@$I
#!/usr/local/bin/perl +\Q?w?DE|
print "Hello, world!\n"; =uDgzdDyE
&_5tqh
c#N<"cy>
PHP _lW+>xQ
<?php HG'{J ^t
print("Hello, world!"); ny-7P;->8
?> I]!^;))
d2s OYCKe
E2L(wt}^
Pike t:LcNlN|
#!/usr/local/bin/pike VOsqJJ3
int main() `]Bxn)b(
{ D|qk_2R%
write("Hello, world!\n"); K\XyZ
return 0; ;@h0qRXW:h
} y$81Zq
,&U4a1%i#c
>!6i3E^
PL/I )EyI0R] 5
Test: procedure options(main); VDB;%U*D
declare My_String char(20) varying initialize('Hello, world!'); oPc\<$
put skip list(My_String); 4(l?uU$
end Test; aAu>Tn86D.
-yDs<
Xl
,7,g%?_P
Prolog MzIq"3
goal 5BR5X\f0
write("hello,world!"). NrDi
@5)
8L/[l
B5X sGLV
Python J/);"bg_O
#!/usr/local/bin/python d7Ur$K\=y
print "Hello, world!" 1xf=_F0`&
,%bhyww<
9t@:4O
REXX i~J;G#b
say "Hello, world!" YGc^h(d
?t@v&s
gqib:q;r
Ruby W\f9jfD
#!/usr/bin/ruby avp;*G}
print "Hello, world!\n" iA_8(Yo
ydv3owN
~8`:7m?
Scheme Ut]+k+ 4
(display "Hello, world!") TgU**JN)
(newline) 6B$q,"%S@
uR6w|e`
z<gu00U7
sed (需要至少一行输入)
t4Z
sed -ne '1s/.*/Hello, world!/p' 6pE :A@
!S%6Uzsj
&p<(_|Af
Smalltalk :PbDU$x
Transcript show: 'Hello, world!' Vv$HR
CGw--`#\
pO<-.,
SNOBOL ?B.~AUN
OUTPUT = "Hello, world!" nA>sHy
END H]<]^Zmjy
"%8A:^1
B6Ej{q^k,
SQL ~fz[x 9\
create table MESSAGE (TEXT char(15)); $N$ FtpB
insert into MESSAGE (TEXT) values ('Hello, world!'); vAP{;Q0i
select TEXT from MESSAGE; j*T]HaM
drop table MESSAGE; (\puf+
[-*F"}D,
~#:e *:ro
Tcl lhC6S'vq
#!/usr/local/bin/tcl .DJDpP)M
puts "Hello, world!" XM
Vq-8B0
[AEBF2OIv
o7&4G$FX~
TScript BdbJ< Is
? "Hello, world!" FqA3{
D
y6$J3 r
N$?cX(|7
Turing !Q-wdzsp?
put "Hello, world!" M/V(5IoP(
$mco0%$
zvv:dC/p<
UNIX-style shell )He#K+[}^4
程序中的/bin/sh可改为您使用的shell fm1X1T .
%R0v5=2'
#!/bin/sh qUhRu>
echo 'Hello, world!' .
,NB( s`
KiLvI,9y
;~HNpu$
GUI 1H:ea7YVU
oL/o*^
Delphi c-XLI
program HelloWorld; FYPz 4K
uses E(+T*
Dialogs; )&W|QH=AI
begin ^>~dlS
ShowMessage('Hello, World!'); dhRJg"vrQ
end. 7INk_2
>3;^l/2c
o%(bQV-T
Nuva /L)
9tt.
<. MQcE6)
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) 5{>0eFzG
.> "2n;3ByR
i8V0Ty4~N
]S8LY.Az5
Visual Basic n~z\?Y=*
MsgBox "Hello, world!" G=M] 8+h
'或者 !awh*Xj6
Print "Hello, world!" YaFcz$GE_
-oBI+v&
AfWl6a?T8:
Visual FoxPro rb_Z5T
? "Hello, world!" :q2YBa
K, (65>86;
993d/z|DX
X11 Mps
*}9
用一个程序 i|2$8G3
\ 3NS>v[1
xmessage 'Hello, world!' I"!'AI-
m% bE-#
用C++和gtkmm 2 jOv"<
|i)lh_iN
#include <iostream> 5 Rz/Ri\c=
#include <gtkmm/main.h> SR*Gqx
#include <gtkmm/button.h> QJ4AL3
^6
#include <gtkmm/window.h> HY;oy(
using namespace std; 6c\DJD
:zL 393(
class HelloWorld : public Gtk::Window hjY0w
{ x72G^`Wv
public: [%.18FWI
HelloWorld(); $^vP<
virtual ~HelloWorld(); dXP6"V@iI
protected: 9={N4}<
Gtk::Button m_button; >iy^$bqF
virtual void on_button_clicked(); QaMDGD
}; 7~.ZE
{;RF
HelloWorld::HelloWorld() : m_button("Hello, world!") ^tE_LL+ji|
{ Z H-5Qy_
set_border_width(10); *caLN,G
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); M'u=H
add(m_button); J/S{FxNe]
m_button.show(); ^@_).:oX7
} _^;;i4VZ
KSOO?X0j
HelloWorld::~HelloWorld() {} u( 9X
UD*+"~
void HelloWorld::on_button_clicked() ]V<"(?,K
{ :o\5K2]:
cout << "Hello, world!" << endl; B
T7Id
} Qq0O0U
E/"SU*Co
int main (int argc, char *argv[]) UvD-C?u'
{ lwsbm D
Gtk::Main kit(argc, argv); aY j%w
HelloWorld helloworld; AP@<r
Gtk::Main::run(helloworld); 3i(J on/p
} fOW_h
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jaqV[*440U
Java 4Iq5+Q
import java.awt.*; VG\mo?G
import java.awt.event.*; "
Z;uu)NE
LVmY=d>
public class HelloFrame extends Frame N *1
{ [aNhP;<
HelloFrame(String title) ~u2w`H?V
{
Ars,V3ep
super(title); #NJ<[Gew
} E._hg+
(Hi
public void paint(Graphics g) P!>g7X
{ 3uO8v{`
super.paint(g); [0op)Kn
java.awt.Insets ins = this.getInsets(); a 2E t,WA%
g.drawString("Hello, World!", ins.left + 25, ins.top + 25);
?360SQ<
} w -dI<s
public static void main(String args []) ^N{X "
{ \P@S"QO
HelloFrame fr = new HelloFrame("Hello"); ]-EN/V
_Y7:!-n}
fr.addWindowListener( x:C@)CAr
new WindowAdapter() !OQuEJR
{ EOQaY
public void windowClosing(WindowEvent e) +I.v!P!^
{ FoLDMx(
System.exit( 0 ); '8={ sMy
} Fva]*5
} S| "TP\o
); PHl4 vh#E!
fr.setResizable(true); uH]
m]t
fr.setSize(500, 100); XC}1_VWs
fr.setVisible(true); ]gHLcr3
} w<mqe0
} VwC4QK,d;
fr]Hc+7
UhBz<>i;!
Java Applet 'v+96b/;
Java Applet用于HTML文件。 /=-h:0{M
8'%+G
HTML代码: "Y(%oJS]D
]]3Q*bq4
<HTML> ZZwBOGVU
<HEAD>
T"B8;|
<TITLE>Hello World</TITLE> sOC|
B
</HEAD> _]_L F[
<BODY> 'Dq"e$JM<
ja:\W\xhJ
HelloWorld Program says: ME,duY/>Q
8ur_/h7
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> r.Lx%LZ\^
</APPLET> sHF%=Vu
'1lx{UzD
</BODY> ) _#T c
</HTML> |/t K-c6J
JQr36U
Java代码: ]ci RiMkT(
"|\94
import java.applet.*; 3} l;
import java.awt.*; z(r"JNO@
[@zkv)D6
public class HelloWorld extends Applet )Jmw|B
{ 8vu2k>
public void paint(Graphics g) qm~Kw!kV
{ " _mmR
M
g.drawString("Hello, world!", 100, 50); 6eOxF8
} r*>QT:sB
} iAg}pwU
NrW [Q3E$
JfR kp
java script Zq9>VqGe
java script是一种用于HTML文件的脚本语言。要查看以下程序的运行结果,只要将其复制到任何HTML文本即可。 9/^d~ZO
we
@Y w6<
<script language="java script"> y.%i
function helloWorld() cx<h_
{ vDWr|M%``l
alert("Hello World"); DU(X,hDBF
} Scf.4~H 0
</script> &