“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。 l#:=zu
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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》。 l3-KswU
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以下是用不同语言写成的Hello World程序的几个例子: ?e3q0Lg3|
Ada L}>9@?;GW
with Ada.Text_Io; use Ada.Text_Io; 4DuZF
-y
procedure Hello is En5Bsz!
begin m|24)%Vj;=
Put_Line ("Hello, world!"); }5Y.N7F
end Hello; &`@,mUi{Ac
1(q!.lPc
H1\~T
汇编语言 C9gF2ii|?
deHBY4@
x86 CPU,DOS,TASM ywq{9)vq
MODEL SMALL !G\1$"T$
IDEAL 8"oS1W
STACK 100H {:6VJ0s\
Vy}:Q[
DATASEG K/MIDH
HW DB 'Hello, world!$' nn#A-x}~;b
5U1@wfKE3>
CODESEG ,e.y4
vnU
MOV AX, @data N:L<ySJ7
MOV DS, AX 7:x.08
MOV DX, OFFSET HW $23="Jcl
MOV AH, 09H 'QCvN b6
INT 21H Kwh3SU=L}
MOV AX, 4C00H 1O(fI|gcO
INT 21H }[ AIE[
END R0. `2=
K<|b>PI.s
kZz;l(?0
x86 CPU,GNU/Linux,NASM i"JF~6c<
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). y;<jE.7>
;Enter this into "hello.asm" then type: ]~ec]Y
;"nasm -f elf hello.asm" ?)]sfJG
;"ld hello.o -o hello" guwnYS
;"./hello"
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[.bS
2jx""{
section .data ;data section declaration !29
Rl`9
msg db 'Hello World!',0AH xFg=Tyq:
len equ $-msg ;string length L?al2aopF
} k5pfz
section .text ;code section declaration ld9zOq
global _start ;entry point (start of execution)
U,Z(h
_start: mov edx,len ;string length O~qB
mov ecx,msg ;string start rzqCQZHL5
mov ebx,1 ;file handle: stdout 5n(p1OM2q
mov eax,4 ;sys_write _BR>- :Jr
int 80h ;kernel system call s?0r\ cc|:
QQC0uta`
mov ebx,0 ;return value .Z/"L@
mov eax,1 ;sys_exit "G`)x+<~Z8
int 80h ;kernel system call vtL)
)K5~r>n&
*l7
ojv
x86 CPU,Windows,MASM32 !*CL>}-,
.386 E(u[?
.model flat,stdcall +?mZ_sf8w
option casemap:none ^~(bm$4r
;Include 文件定义 =FwFqjvl
include windows.inc QF%@MK0zC
include user32.inc &mY<e4
includelib user32.lib _II;$_N
include kernel32.inc :U r%.0
includelib kernel32.lib (%I`EAR
;数据段 anl?4q3;9
.data k U3]
eh\I
szCaption db 'A MessageBox!',0 bz}T}nj
szText db 'Hello,world!',0 apw8wL2
;代码段 -O(.J'=8
.code j5$Sm
start: xhimRi
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK F'SOl*v(s5
invoke ExitProcess,NULL 61gZZM
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> V]vk9M2q[l
end start kP[ Y
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:=~([oSNW"
AWK /jS
BEGIN { print "Hello, world!" } Cs*u{O
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BASIC :UScbPG
传统版BASIC(例如GWBASIC): >
]6Eb`v
V2.MZ9
10 PRINT "Hello, world!" {0Leua
20 END 0Q>Yoa
11
h V=)T^Q
或在提示符输入:
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$9hOWti
?"Hello, world!":END T[<9Ty'^
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现代版BASIC(例如Quick BASIC): C9bf1ddCW&
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Print "Hello, world!" o ue;$8
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以下的语句在Quick BASIC中同样有效: h?$4\^/
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? "Hello,world!" noL<pkks~R
bNc=}^
I^lb;3uR
BCPL U)c,ZxE
GET "LIBHDR" 6oJ~Jdn'
ZEApE+m
LET START () BE pLk?<y
$( t,=khZ
WRITES ("Hello, world!*N") u1>| 2D
$) E@[`y:P
eb+[=nmP
a2p<HW;)m
Befunge (wbG0lu
"!dlrow olleH">v 81aY*\
, [>6:xGSe9X
^_@ d3Y#_!)
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}0f[x ?V
Brainfuck $Cf_RFH0
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< uWMAXGL
+++++++++++++++.>.+++.------.--------.>+.>. Zkxt>%20~
x2K.5q>
jQ7RH/?_
C Y{2\==~
#include <stdio.h> .s,hl(w,
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int main(void) r%TgZ5~u
{ <\yM{
V\
printf("Hello, world!\n"); t|%iW%m4
return 0; e
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} *[_?4*F
i<&2Ffvq
c: #1Aym
C++ 9~u1fk{
#include <iostream> !@ bN
yQCfn1a)
int main() @^%zh
{ [n66ZY#U]
std::cout << "Hello, world!" << std::endl; +KD~/}C%-
return 0; 4d6F4G4U
} vp-)$f&
Pk*EnA)
sFB; /*C
C++/CLI zf2]|]*xz
int main() $7PFos%@
{ f3*u_LO
System::Console::WriteLine("Hello, world!"); *S{%+1F
} i}M&1E
[Ma&=2h
i' N
C# (C Sharp) z!t&zkAK
class HelloWorldApp n; !t?jnf.
{ #nn2odR
public static void Main() )/f,.Z$
{ }4ta#T Ea
System.Console.WriteLine("Hello, world!"); | F:?
} )S>~ h;
} B4&x?-0ZC
r#^X]
[}d
3u!
COBOL Ks!.$y:x
IDENTIFICATION DIVISION. !y?g$e`
PROGRAM-ID. HELLO-WORLD. %'t~+_
:9K5zD
ENVIRONMENT DIVISION. l<^#@S H
.F}ZP0THnZ
DATA DIVISION. c+-L>dsss
WvNX%se]3
PROCEDURE DIVISION. QbpRSdxy`$
DISPLAY "Hello, world!".
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STOP RUN. aoMQ_@0
RI cA)I.
zneK)C8&q3
Common Lisp GQ)h Zt0
(format t "Hello world!~%") \+S~N:@><k
}%_x T
nG{jx_{`
DOS批处理 J&Le*R'
@echo off
voV=}.(p
echo "Hello, world!" ;>|:I(l;
CWt,cwFW
UZ&bT'>;9g
Eiffel E
jBEZL|_
class HELLO_WORLD mKWA-h+f
)SUT+x(DU
creation qFf'RgUtP
make A-.jv
feature [4(TG<I
make is rN}{v}n
local RR^I*kRH
io:BASIC_IO 0B1*N_.L@
do $5cLhi"`
!!io }q27M
io.put_string("%N Hello, world!") #).om*Xh
end -- make /3rt]h"
end -- class HELLO_WORLD 3}n=o d=
Lj({
T'f(
H6rWb6i
Erlang ?$F:S%eH
-module(hello). 0XL
x@FYn
-export([hello_world/0]). {EZ
;
]@M$.msg@
hello_world() -> io:fwrite("Hello, World!\n"). <E6]8SQE
b*r1Jn"h
:NS;y-{^^y
Forth MdZ7Yep
." Hello, world!" CR nN/v7^^
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A$fd6+{
Fortran 3"!2C,3c#
WRITE(*,10) )!p=0&z@{
10 FORMAT('Hello, World!') $U"/.Mh\
STOP "t`r_Aw
END "uqa~R{
u.8vXc
)v8;\1`s:
HTML u ldea)
<HTML> w0tlF:Eg
<HEAD> tkV:kh< L~
<TITLE> Hello World! </TITLE> HC}D<FX|
</HEAD> D@5&xd_@4
<BODY> Lg_y1Mu7o
<p>Hello World!</p> 9?bfZF4A=
</BODY> +z;xl-*[
</HTML> +6uun
44RZk|U1J{
mmr>"`5.
HQ9+ W{ @lt}
H S1E2E3
lb`P9mbr+
bo\|mvB~
INTERCAL 8p>%}LX/
PLEASE DO ,1 <- #13 6i%LM`8GEk
DO ,1 SUB #1 <- #238 a%Cq?HZ7
DO ,1 SUB #2 <- #112 M1Od%nz3
DO ,1 SUB #3 <- #112 )Qb1$%r.
DO ,1 SUB #4 <- #0 H*EQ%BLW^,
DO ,1 SUB #5 <- #64 DTn=WGm)
DO ,1 SUB #6 <- #238 %!p14c*J H
DO ,1 SUB #7 <- #26 4
lJ@qhV
DO ,1 SUB #8 <- #248 RAXqRP,iw
DO ,1 SUB #9 <- #168 %v
:a
DO ,1 SUB #10 <- #24 pRUN[[L
DO ,1 SUB #11 <- #16 p5c'gziR
DO ,1 SUB #12 <- #158 m!N_TOl-^
DO ,1 SUB #13 <- #52 H,KU!1p
PLEASE READ OUT ,1 (fm\kV
PLEASE GIVE UP = J).(E89
bq<QUw=]q&
"p2 $R*ie
Java D\N-ye1LE
public class Hello +*!oZKm.
{ BAdHGwomh
public static void main(String[] args) k[y{&f,
{ z`>a,X
System.out.println("Hello, world!"); 9!gmS?f
} JR'Q Th:z
} \TC&/'7}
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(3{'GX2c
JSP eey <:n/Z
<% yTkYPx
out.print("Hello, world!"); +7N6]pK|"
%> ZCbxL.fFz
!+9H=u
.I
{X
MIXAL 3`IDm5
TERM EQU 19 the MIX console device number L~I<y;x
ORIG 1000 start address /PQg>Pa85
START OUT MSG(TERM) output data at address MSG V |#B=W
HLT halt execution u0w2v+
MSG ALF "MIXAL"
7$,["cJX
ALF " HELL" L>xcgV7
ALF "O WOR" [UR+G8X21m
ALF "LD " h7[VXE
END START end of the program MvL%*("4b
m\"M`o
B
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rT0
Nuva JWlH(-U4|
<..直接输出..> 8Tt2T}
Y
Hello, world! dZ`nv[]k~
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<..或者..> @<W"$_r-
K]N^6ome
<. 6\OSIxJZF
// 不带换行 &"Ua"H)
? "Hello, world!" K)l{3\9l|
"*kWM
// 或者 Vy16Co
qECc[)B
// 带换行 onG,N1`+
?? 'Hello, world!' u?Iop/b
.> ;T-i+_
R:0Fv9bwS
"EWU:9\0
OCaml vb{&T<
let main () = TLPy/,
print_endline "Hello world!";; JjyQ
{ tim{nV
oel3H5Nz
Pascal _o' jy^
program Hello; Y]&HU) u
begin 0*B_$E06
writeln('Hello, world!'); I;uZ/cZ|/
end. e>uV8!u
&tLg}7?iB
>pG]#Z g
Perl u;h9Ra1
#!/usr/local/bin/perl 7bQ#M )}
print "Hello, world!\n"; #9#N+
PrDvRWM
ZKAIG=l&!
PHP q fadsVp
<?php at6f(+
print("Hello, world!"); i.0}qS?
?> i*9eU*i|H
o Ep\po1
=QRLKo#_
Pike H]}Iw5Z
#!/usr/local/bin/pike 8
6?D
int main() )
;-AT^
{ xyBe*,u
write("Hello, world!\n"); qNC.|R
return 0; csH1X/3ha\
} F 3,hx
Ndx.SOj
M\e%GJ0
PL/I .F'Fk=N
Test: procedure options(main); O`OntYwa>
declare My_String char(20) varying initialize('Hello, world!'); u2 -%~Rlo
put skip list(My_String); WTY{sq\'
o
end Test; 1,,o_e\nn3
o+/x8:
TcO@q ]+S
Prolog k{y@&QNj
goal ;=F^G?p^
write("hello,world!"). Pt";f
n#,AZ&
Zhz.8W
Python 7! <cU
#!/usr/local/bin/python y9Yh%M(
print "Hello, world!" e,`+6qP{
r}D`15IHJ
1i2jYDB"
REXX jW?.>(
say "Hello, world!" t#6gjfIi
N''9Bt+:
-;Cl0O%
Ruby k+JDbJ@
#!/usr/bin/ruby Gob1V
print "Hello, world!\n" amlE5GK;
WASs'Gx
M6pGf_qt
Scheme {hZ_f3o
(display "Hello, world!") S-.!BQ@RMZ
(newline) FyZw='D
s-o0N{b?#'
}"Hf/{E$_"
sed (需要至少一行输入) pYceMZ$
sed -ne '1s/.*/Hello, world!/p' bYgrKz@uK
'JKFEUzM
#*}4=
Smalltalk l4L&hY^
Transcript show: 'Hello, world!' w<-CKM3qe
BU<A+Pe>
i^Ep[3
SNOBOL KosAc'/ M
OUTPUT = "Hello, world!" vT\`0di~
END ?J%$;"q
xh_6@}D2J
:T5l0h-eC
SQL PZeVjL?E
create table MESSAGE (TEXT char(15)); {p
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insert into MESSAGE (TEXT) values ('Hello, world!'); $@}6P,mg
select TEXT from MESSAGE; |a3)U%rUEQ
drop table MESSAGE; )z2Tm4>iql
`|
L+a~~
r,L#JR w#-
Tcl My,ki:V?g6
#!/usr/local/bin/tcl (NScG[$}
puts "Hello, world!" 7MOjZD4?
?`,Xb.NA$K
e@NS=U` <
TScript 6b6}HO
? "Hello, world!" Q$iv27
)O#>ONm^
[0Z
r z+q
Turing m~(]\
put "Hello, world!" &]16Hb~
}yK_2zak5i
A^bg*t,
UNIX-style shell F4YCU$V
程序中的/bin/sh可改为您使用的shell NVcL9"ht*@
%fJ*Ql4M
#!/bin/sh .Rd@,3
echo 'Hello, world!' Beiz*2-}a
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azS"*#r6}
GUI 0p*(<8D}
dfO@Yo-?*'
Delphi A_CEpG]
program HelloWorld; "
F~uTo
uses C.}Z5BwS
Dialogs; ZiSy&r:(
begin kQsyvE
ShowMessage('Hello, World!'); d Am(uJ
end. LXJ"ct
]lXTIej`dy
Q<;f-9q@
Nuva f+Pu t
<. UF|v=|*{#
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) Jc-0.^]E}
.> (C!u3ke2D
uG${`4
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Visual Basic IgG@v9'
MsgBox "Hello, world!" [3]!*Cd
'或者 %a{cJ6P
Print "Hello, world!" w`CGDF\Oo
e7{3:y|]d3
*jCXH<?R
Visual FoxPro (TVzYm
y
? "Hello, world!" D?)"Z$
%K\_gR}V
J2v=b?NE
X11 ,xn+T)2I
用一个程序 iRPt0?$
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xmessage 'Hello, world!' lJ62[2=V
'2WYbcU
用C++和gtkmm 2 `N_N zH
U*(m'Ea
#include <iostream> u f.Zg;Vc
#include <gtkmm/main.h> %$~?DDNM
#include <gtkmm/button.h> 1YTnOiYS1
#include <gtkmm/window.h> ]O,!B''8k
using namespace std; zX"@QB3E
DHaSBk
class HelloWorld : public Gtk::Window HZ>Xm6DnC5
{ +s
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public: R1!{,*Gy
HelloWorld(); V=H87^b
virtual ~HelloWorld(); CGbW]D$@
protected: vAy`8Q
Gtk::Button m_button; :cnH@:
virtual void on_button_clicked(); <ij;^ygYD
}; INyreoMp
sG%Q?&-
HelloWorld::HelloWorld() : m_button("Hello, world!") bO>Mvf
{ 3R
!Mfz*
set_border_width(10); V/.Y]dN5
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); l=Jbuc
add(m_button); D`o*OlU
m_button.show(); WID4 {>G2
} G;Q)A$-
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HelloWorld::~HelloWorld() {} 6w0/;8(_m
Zh)Qq?H
void HelloWorld::on_button_clicked() G)?VC^Q
{ </5uB'
B ^
cout << "Hello, world!" << endl; isLIfE>
} eRWTuIV6
PB.@G,)
int main (int argc, char *argv[]) <*i
'
{ 1ZJP.T`
Gtk::Main kit(argc, argv); ^.&