“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。 {9J|\Zz3
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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》。 $%U}k=-
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以下是用不同语言写成的Hello World程序的几个例子: yXkQ
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Ada /{({f?k<\/
with Ada.Text_Io; use Ada.Text_Io; %n]jsdE^|
procedure Hello is J^t0M\
begin `+=Zq :0
Put_Line ("Hello, world!"); [,&g46x22
end Hello; aT/2rMKPF
QAI=nrlp
,T;sWl
汇编语言 S|d /?}C|e
d%@0xsU1
x86 CPU,DOS,TASM hW~% :v
MODEL SMALL ^PdD-tY<
IDEAL "P.sKhuo
STACK 100H j gV^{8qG
2SU'lh\E
DATASEG 06NiH-0O
HW DB 'Hello, world!$' .}E<,T
5hqXMs
CODESEG ko.%@Y(=
MOV AX, @data `B?+1Gv
MOV DS, AX @MQfeM-@
MOV DX, OFFSET HW :~ s"]*y
MOV AH, 09H y**L^uvr
INT 21H Q3r]T.].h
MOV AX, 4C00H )1 @v<I
INT 21H $_%
END +VIEDV+
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p;[.&oJ
x86 CPU,GNU/Linux,NASM H/f}tw
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). i Q3wi
;Enter this into "hello.asm" then type: K[SzE{5=P
;"nasm -f elf hello.asm" daY0;,>
;"ld hello.o -o hello" M|y!,/'
;"./hello" G>Bgw>#_
B'Nvl#
section .data ;data section declaration FpttH?^
msg db 'Hello World!',0AH @#"K6
len equ $-msg ;string length :A#'8xE/
b5p;)#
section .text ;code section declaration `U?S 9m
global _start ;entry point (start of execution) -8:O?]+Q/
_start: mov edx,len ;string length WbFCj0
mov ecx,msg ;string start <q MX,h2
mov ebx,1 ;file handle: stdout NVVAh5R
mov eax,4 ;sys_write 3F6'3NvVc2
int 80h ;kernel system call YC{7;=Pf
Vg(p_k45`
mov ebx,0 ;return value |rpMwkR
mov eax,1 ;sys_exit 9(&$Gwi
int 80h ;kernel system call ,g P;XRe1
.>`7d=KT
nP=/XiCj
x86 CPU,Windows,MASM32 a$"Z\F:x
.386 4/o9K*M+
.model flat,stdcall /|Gz<nSc
option casemap:none &=8ZGjR< }
;Include 文件定义 $
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=lF
include windows.inc yYC\a7Al4
include user32.inc DL_M#c`<
includelib user32.lib hHt.No
include kernel32.inc qztL M?iV
includelib kernel32.lib L8;`*H
;数据段 e mq%"
;.
.data $YBH;^#
szCaption db 'A MessageBox!',0 ieyqp~+|4$
szText db 'Hello,world!',0 c1]\.s
;代码段 IxP$lx
.code y9:o];/
start: "Q23s"
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ~O~we
invoke ExitProcess,NULL @S012} xH
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> [o'}R`5)
end start +w?1<Z
WsM/-P1Y
bF@iO316H
AWK wRWKem=
BEGIN { print "Hello, world!" } |?fc]dl1]
KueI*\ p
m<9W#
BASIC ,g)9ZP.F
传统版BASIC(例如GWBASIC): w68VOymD/
is-{U?-
10 PRINT "Hello, world!" v2#qs*sW8
20 END &kOb#\11u
la!rg#)-X
或在提示符输入: /3vj`#jD
4p&SlJ
?"Hello, world!":END a'@?c_y;$
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现代版BASIC(例如Quick BASIC): c_2kHT
H%c{ }F
Print "Hello, world!" DB1Y`l
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以下的语句在Quick BASIC中同样有效: `^E(P1oJ3
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? "Hello,world!"
s@3<]
4gm(gY>[
#KSB%
BCPL In4T`c?kQ
GET "LIBHDR" fI(H
:N
i
`8Y/$aT
LET START () BE "Zicac@N
$( I."4u~[
WRITES ("Hello, world!*N") u`X}AKC
$) U#_rcu
t#J
#DyY5
+%RXV~
Befunge `!T6#6h
"!dlrow olleH">v |c>A3 P$=B
, )6zwprH!
^_@ HaamLu
d3C*]|gQ
QO~TuC
Brainfuck T1b9Zqc)f
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< =mk7'A>l
+++++++++++++++.>.+++.------.--------.>+.>. 3?(||h{
t\+vTvT)RE
i`:r2kU:*W
C WxLILh
#include <stdio.h> ]+S.#x`#
pRdO4?l
int main(void) &"svt2
{
!*xQPanL
printf("Hello, world!\n"); Ts:pk
return 0; {z%%(,I
} kR-5RaW
=M9Od7\J
'W j Q
C++ dkf?lmC+M
#include <iostream> K`1\3J)
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b
int main() "|"bo5M:
{ F;&'C$%
std::cout << "Hello, world!" << std::endl; 4d3PF`,H`
return 0; 7"y"%+*/
} ]urcA,a
R\=y/tw0H
:FdV$E]]<
C++/CLI N1!|nS3w
int main() A]vQ1*pnk
{ VL<)d-
System::Console::WriteLine("Hello, world!"); IV:Knh+
?
} ji2if.t@
*Mqg_} 0Y
FyQ^@@
C# (C Sharp) cj<j*(ZZ
class HelloWorldApp vexQP}N0
{ Hp":r%)
public static void Main() b_=k"d
{ S?=2GY
System.Console.WriteLine("Hello, world!"); uoKC+8GA
} aARm nV
} U=%S6uL\bx
fr\UX}o
Oox5${#^
COBOL !/$BXUrd
IDENTIFICATION DIVISION. _W*3FH
PROGRAM-ID. HELLO-WORLD. ,[^P
X;p,Wq#D'
ENVIRONMENT DIVISION. 4//Ww6W:
4oOe
DATA DIVISION. 58MBG&a%
g!%csf
PROCEDURE DIVISION. c66Iy"
DISPLAY "Hello, world!". :h3
Gk;u
STOP RUN. VxfFk4
GYv2^IB:
c{#lKD<7
Common Lisp 82Vxk
(format t "Hello world!~%") eGLLh_V"
c-avX
")(1z@
DOS批处理 ^QV;[ha,o
@echo off `pN]Ykt
echo "Hello, world!" W?/7PVGv5h
K)0 6][,
s6). ?oE
Eiffel \"PlM!0du
class HELLO_WORLD )r1Z}X(#d
2&!G@5
creation !cE)LG
make Ar=pzQ<Z{
feature T cSj`-
make is -D.6@@%Kc}
local JT<Ia
io:BASIC_IO #ZGWU_l}
do TiF$',WMv
!!io }kXF*cVg
io.put_string("%N Hello, world!") J/wot,j^
end -- make JVTG3:zD
end -- class HELLO_WORLD ;Z.}~d6>!
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i' |S
g
Erlang K#F~$k|1B
-module(hello). .6OE8w
1
-export([hello_world/0]). o~^hsm[44J
C`knFGb
hello_world() -> io:fwrite("Hello, World!\n"). CWI(Q`((>
n2Ycq&O
h.~S^uKi*
Forth F K={%
." Hello, world!" CR >&U]j*'4
kS?!"zk>
tp*AA@~
Fortran $+[HJ{
WRITE(*,10) l=
!KZaH
10 FORMAT('Hello, World!') vM\8>p*U
STOP S]{K^Q),
END 18ci-W#p
ybf`7KEP2A
|n67!1
HTML =`vUWONn
<HTML> &sWq SS
<HEAD> U#,2et6
<TITLE> Hello World! </TITLE> XF{}St~ (
</HEAD> 31YzTbl[H
<BODY> le|e 4f*+
<p>Hello World!</p> d%4!d_I<
</BODY> 6]Ppa ~Xwq
</HTML> tq>QZEg
UTmX"Li
qz(0iZ] Y
HQ9+ A@du*5>(
H S4`uNB#Ht
q^goi1
; >.>vLF
INTERCAL =}U`q3k
PLEASE DO ,1 <- #13 M.!U;U<?
DO ,1 SUB #1 <- #238 kY4riZnm
DO ,1 SUB #2 <- #112 ep,kImT
DO ,1 SUB #3 <- #112 ~++y4NB8Q
DO ,1 SUB #4 <- #0 H-0A&oG
DO ,1 SUB #5 <- #64 a{69JY5
DO ,1 SUB #6 <- #238 (?YTQ8QR
DO ,1 SUB #7 <- #26 i+T$&$b
DO ,1 SUB #8 <- #248 nvsuF)%9hZ
DO ,1 SUB #9 <- #168 Kv!CL9^LX7
DO ,1 SUB #10 <- #24 nY}Ep\g
DO ,1 SUB #11 <- #16 i v&:X3iB
DO ,1 SUB #12 <- #158 Gv6EJV1i
DO ,1 SUB #13 <- #52 VwHTtZ
PLEASE READ OUT ,1 >,A:zbs&
PLEASE GIVE UP |ay W _5}
HRje4=:
I`E9]b(w
Java +:wOzTUN
public class Hello :%)l*[
{ m[Px|A5{
public static void main(String[] args) m_Z%[@L
{ XrtB&h|C
System.out.println("Hello, world!"); }N*6xr*X+
} tX&Dum $
} {&"rv<p
-&D~TL#
[|xHXcW
JSP x:"_B
<% ~%k<N/B
out.print("Hello, world!"); VGA?B@
%> 70a7}C\/o
"+r8izB
Yep(,J~'
MIXAL lySeq^y?Q
TERM EQU 19 the MIX console device number b 9F=}.4
ORIG 1000 start address RBJgQ<j8
START OUT MSG(TERM) output data at address MSG '1|r+(q|2
HLT halt execution 4U~[8U}g
MSG ALF "MIXAL" m(XcPb
ALF " HELL" C B=H1+
ALF "O WOR" XQ%*U=)s
ALF "LD " Pc`d@q
END START end of the program tlQ3BKp
4 )*8&
S;MS,R
Nuva d9sl(;r
<..直接输出..> iAbtv^fn
Hello, world! QrHI}r
[F*t2 -ta
<..或者..> = %\;7
2r,K/'
<. >QU1_'1r
// 不带换行 5L"{J5R}
? "Hello, world!" |u<qbl
2W~,,$
G
// 或者 /
\!hW-+]W
Pj8s;#~u
// 带换行
TfDx>
F$
?? 'Hello, world!' QROe+:
.> qeb:n$
E@7";&\-8
|/Am\tk#13
OCaml uw&GXOzew9
let main () = 0:@:cz=#*
print_endline "Hello world!";; .&TJSIx$
$A9!} `V
q!$?G]-%
Pascal NELQo#kjZ
program Hello; ~}z{RE($v
begin M4XnuFGB[w
writeln('Hello, world!'); "$;=8O5O
end. "/[-U;ck
W> s@fN9
Aj*0nV9_
Perl iXqc$!lTH
#!/usr/local/bin/perl bBW(#
Q_a
print "Hello, world!\n"; Ts:3_4-k
hT>h
5^t68
WOl
PHP sf2_x>U1
<?php {W62%>v
print("Hello, world!"); &%ej=O
?> fJtJ2x i
R)?K+cJ%
j/5>zS
Pike KM*sLC#
#!/usr/local/bin/pike ^VR1whCrx
int main() x#|=.T
{ U\&kT/6vh
write("Hello, world!\n"); !:,d^L!bh
return 0; c (O+s/
} SXSH9;j
%qcBM~efT
a.v$+}+.[,
PL/I VjS %!P
Test: procedure options(main); |{k;pfPV
declare My_String char(20) varying initialize('Hello, world!'); y,tA~
put skip list(My_String); =iC5um:
end Test; Q*+@"tk<
)#l &F$
c>{6NSS -
Prolog 2mP|
hp?
goal %L+/GtxK
write("hello,world!"). m=k(6
v)N8vFdd
f(=yC}si
Python w:I^iI.
#!/usr/local/bin/python udX4SBq-pC
print "Hello, world!" ELeR5xT
&STgj|t_
Zk$AAjC&
REXX @Ytsb!!
say "Hello, world!" L,of@>
O?p.kf{b
PQ. xmg2
Ruby ?|Fu^eR%X
#!/usr/bin/ruby fz31di9$
print "Hello, world!\n" ptQr8[FA
#M&rmKv)g
%gSqc
}v*
Scheme ndT:,"s
(display "Hello, world!") *Af]?-|^{#
(newline) z[b,:G
`0uKJFg
@riCR<fF
sed (需要至少一行输入) V:9| 9$G
sed -ne '1s/.*/Hello, world!/p' 1*S It5?4
daE/v.a4|
E)3B)(@&P
Smalltalk FVMR9~&+
Transcript show: 'Hello, world!' YN_#x
4%LG9hS
d*,% -Io
SNOBOL 9xP{#Qa
OUTPUT = "Hello, world!" 3hab51J
END F#7ZR*ZB1
KGxF3xS*7
gZuk(
SQL EXH{3E54)`
create table MESSAGE (TEXT char(15)); ?{?mAbc
insert into MESSAGE (TEXT) values ('Hello, world!'); n{d}]V@
select TEXT from MESSAGE; F7^8Ej9*a
drop table MESSAGE; yA?>v'K
*_`T*$
#x1AZwC
Tcl 0bQaXxt|p
#!/usr/local/bin/tcl au9r)]p-
puts "Hello, world!" Ziuf<X{
_s><>LH~
"h_]it};C
TScript 4q/E7n
? "Hello, world!" Fkuq'C<|Y
Wa
#,>
>9a%"<(2#
Turing
V"%2T z
put "Hello, world!" I+D`\OSL
KSIH1E
s=(~/p#M
UNIX-style shell I{<6GIU+
程序中的/bin/sh可改为您使用的shell kQC>8"
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LK
#!/bin/sh p|,K2^?Y
echo 'Hello, world!' auAST;"Z8
0(|R NV_
VD/Wl2DK
GUI 96]lI3c
WLiY:X(+|
Delphi 1,`-n5@J%n
program HelloWorld; rtvuAFiH
uses - >n<9
Dialogs; <Xm5re.
begin JmrQDO_(
ShowMessage('Hello, World!'); &UP@Sr0D7
end. B7nMyoj
%2^C
5IW^^<kiu
Nuva "M
v%M2'c
<. _t6siB_u
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) EAF<PMb
.> I|RN/RVN
-?e~dLu
ABNsi$]r0
Visual Basic -le:0NUwI
MsgBox "Hello, world!" mz1Xk ]nE
'或者 -Hh$3Uv
Print "Hello, world!" UYW%%5p?
b;]'Bo0K
%83PbH
Visual FoxPro u9:;ft{}N
? "Hello, world!" 'Vy$d<@s[
reM%GU
fbB(WE+
X11 |4-c/@D.~
用一个程序 SjKIn-
3
C=nC
xmessage 'Hello, world!' _8\Uukm
kOVx]=
用C++和gtkmm 2 K).X=2gjY
6'(5pt
#include <iostream> ZgtW
#include <gtkmm/main.h> 4@5rR~DQq
#include <gtkmm/button.h> $Pzvv`f*
#include <gtkmm/window.h> wC!(STu
using namespace std; a: iIfdd4'
hOfd<k\A
class HelloWorld : public Gtk::Window +hY/4Tx<
{ gwThhwR
public: ]j*o&6cQf
HelloWorld(); zVxiCyU
virtual ~HelloWorld(); pTGq4v@6x
protected: \b.2f+;3
Gtk::Button m_button; 1)#<nk)I
virtual void on_button_clicked(); ~IE:i-Kz
}; =zVbZ7
1kio.9NIp
HelloWorld::HelloWorld() : m_button("Hello, world!") 1dfA
8=L,s
{ da\K>An>
set_border_width(10); s?~Abj_
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); dT/Cn v=
add(m_button); uz>s2I}B
m_button.show(); m{pL<
g^M
} R{!s%K&
zq4,%$y8|
HelloWorld::~HelloWorld() {} ]!YzbvoR
<2A4}+p:
void HelloWorld::on_button_clicked() X-Xf6&U