“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。 P|,@En 1!
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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》。 AlP}H~|M7
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以下是用不同语言写成的Hello World程序的几个例子: wLn,x;;<
Ada M*M,Z
with Ada.Text_Io; use Ada.Text_Io; ykFm$ 0m+I
procedure Hello is ]PWK^-4P
begin '1'#,u!
Put_Line ("Hello, world!"); K
q;X(&Z
end Hello; v@_}R_pX
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汇编语言 AE`z~L,
$['_m~
2
x86 CPU,DOS,TASM !S6zC >
MODEL SMALL G 3))3]
IDEAL hSQ*_#
STACK 100H S ]_iobWK
1/b5i8I2v
DATASEG 9H^$cM9C
HW DB 'Hello, world!$' MTm}qx@L
3>60_:+Zb
CODESEG D#VUx9kugv
MOV AX, @data u.!}s2wT#
MOV DS, AX $tKz|H)
MOV DX, OFFSET HW ;+ : C
MOV AH, 09H 8YroEX[5l
INT 21H @smjXeFo
MOV AX, 4C00H WdQR^'b$
INT 21H 4%k{vo5i
END }N@8zB~X
AlZ]UGf^
fpd4 v|(
x86 CPU,GNU/Linux,NASM a=m4)tjk
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ?T.'
q
;Enter this into "hello.asm" then type: 3zC<k2B
;"nasm -f elf hello.asm" p'SclH[
;"ld hello.o -o hello" ~kHWh8\b:
;"./hello" 0?@;zTE0
=3K}]3f
section .data ;data section declaration ScN'|Ia.-
msg db 'Hello World!',0AH &lnr?y^
len equ $-msg ;string length lX g.`
MaMP7O|W
section .text ;code section declaration rQE:rVKVh
global _start ;entry point (start of execution) . W ~&d_n
_start: mov edx,len ;string length *@;Pns]L-
mov ecx,msg ;string start ),DLrGOl
mov ebx,1 ;file handle: stdout =;HC7TUM&
mov eax,4 ;sys_write Ql 2zC9C
int 80h ;kernel system call fXo$1!
= Ob-'Syg>
mov ebx,0 ;return value `i~kW
mov eax,1 ;sys_exit Y)V)g9
int 80h ;kernel system call w|t}.u
MS7rD%(,'
%%uvia=e
x86 CPU,Windows,MASM32 Veeuw
.386 ,>
%=,x
.model flat,stdcall VD.wO%9?)
option casemap:none ?$v*_*:2h
;Include 文件定义 E@.daUoB
include windows.inc wqx9
include user32.inc LH_VdLds
includelib user32.lib Sbzx7 *X
include kernel32.inc E\/J& .
includelib kernel32.lib OSu/!Iv\
;数据段 B183h
.data ;T-`~
szCaption db 'A MessageBox!',0 A,PF#G(
szText db 'Hello,world!',0 TUy
25E
;代码段 4,g[g#g<q
.code w20)~&LE-
start: 1n3XB+*
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK g"}j
invoke ExitProcess,NULL a_z1S Z2[
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> V*d@@%u**
end start nO#a|~-))
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%]"eN{Uvn
AWK n{*A<-vL
BEGIN { print "Hello, world!" } 3*8m!gq7s
\&XtPQ
c^F@9{I
BASIC jNbU{Z%r
传统版BASIC(例如GWBASIC): ?1afW)`a.v
!(H
RP9
10 PRINT "Hello, world!" vV
PK
20 END xI>HY9i)
<>shx;g^C
或在提示符输入: Pt=@U:
j|-{*t{/x
?"Hello, world!":END s#BSZP
)B$Uo,1
现代版BASIC(例如Quick BASIC): X$A[~v
8"=E0(m
Print "Hello, world!" mb GL)NI
yg WwUpY
以下的语句在Quick BASIC中同样有效: 2G&H[`
8-5g6qAS
? "Hello,world!" Q $^)z_jai
4p6\8eytq.
8+mu'RZ X
BCPL W.sH
GET "LIBHDR" |_\q5?S
oAt{#v
LET START () BE J;5G]$s
$( ],|;
WRITES ("Hello, world!*N") f\u5=!kjN
$) 9i`MUE1Sh
!*!i&0QC~R
6^QSV@N|
Befunge M<K}H8?
"!dlrow olleH">v @W.0YU0|J
, 2{A/Fbk
^_@ l\6.f_
/St d6B*
(.~,I+Cz'
Brainfuck tSX,*cz
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Z}`A'#!
+++++++++++++++.>.+++.------.--------.>+.>. z{(c-7*
M?v`C>j
fO{'$?K
C s*tzU.E(
#include <stdio.h> fq(3uE]nC
-Gj."ks
int main(void) $h|8z
{ v$~ZT_"(9
printf("Hello, world!\n"); )U+Pt98"
return 0; 1Q!^%{Y;
} \=
G8
#XeEpdE
S]<%^W'
C++ OV`#/QL
#include <iostream> a=r^?q'/
eMOnzW|h
int main() }&Ul(HR
{ JPM W|JT
std::cout << "Hello, world!" << std::endl; 5;[h&jH
return 0; "ZR^w5
} P"s7}cl
.B_a3K4'{^
YPmgR]=6
C++/CLI :^ J'_
int main() EMw
biGV
{ fctVJ{?
System::Console::WriteLine("Hello, world!"); t}fU 2Yb
} G|LcTV
dk.VH!uVb
PbIir=
C# (C Sharp) KY9&Ky+2 B
class HelloWorldApp s-e<&*D[
{ VI;)VJbq
public static void Main() *3h!&.zm
{ .]LP327u
System.Console.WriteLine("Hello, world!"); wh#x`Nc
} ,K8(D<{
} =P`l+k3
V~4yS4
*GC9o/
COBOL WoDQg64
IDENTIFICATION DIVISION. ^ Iy'<J
PROGRAM-ID. HELLO-WORLD. E-b3#\^:
QvDD
ENVIRONMENT DIVISION. 4^{~MgQWK+
B'-L-]\H
DATA DIVISION. b\^9::oY
i3<ZFR
PROCEDURE DIVISION. m:C |R-IL
DISPLAY "Hello, world!". vx4Jk]h+=L
STOP RUN. GU]_Z!3
!A#(bC
ct@i]}"`
Common Lisp ,_U3p ,
(format t "Hello world!~%") Ir$:e*E>
o(3`-ucD`
y R_x:,|g
DOS批处理 95^-ptO{1`
@echo off >-4kO7.V
echo "Hello, world!" F:cenIaBF
q|xic>.
)kt,E}609
Eiffel O;SD90
class HELLO_WORLD iNEE2BPp
*S\/l-D
creation [|dQZ
make .Eg[[K_iD
feature &/{x7;e
make is
1ZRSeh
local ['\u?m
io:BASIC_IO
{U7A&e0eW
do mqKr+
!!io ZfSAXr "(
io.put_string("%N Hello, world!") z|WDqB%/I
end -- make Nh+ZSV4WJ:
end -- class HELLO_WORLD .>+jtp}
p WLFJH}N
UkgiSv+
Erlang /+{1;}AT
-module(hello). O>Ao#_*hOb
-export([hello_world/0]). +EP=uV9t
>
@n?W"
hello_world() -> io:fwrite("Hello, World!\n"). zR6^rq*
%#-'|~
6),VN>j
Forth FX:'38-fk
." Hello, world!" CR X.hVMX2B
K0z@gWGE
mFeoeI,Jv
Fortran P'p5-l UK
WRITE(*,10) #hP&;HZ2>"
10 FORMAT('Hello, World!') [cvtF(,
STOP &+-]!^2o
END @DK;i_i
Ilv
_.
>TQnCG=
HTML "%fvA;
<HTML> D$PR<>=y
<HEAD> 8VLD yX2-
<TITLE> Hello World! </TITLE> .80L>0
</HEAD> (d$ksf_[%f
<BODY> TP?HxO_C
<p>Hello World!</p> O"~BnA`dJ
</BODY> Sp^jC
Xu
</HTML> }5a$Ka-
u|uPvbM
`6`oLu\l
HQ9+ >2@ a\
H ;OY*`(Id
N77EM
$][$ e
INTERCAL "
H;iAv
PLEASE DO ,1 <- #13 &W:R#/|
DO ,1 SUB #1 <- #238 HE>sZ;
DO ,1 SUB #2 <- #112 /;\{zA$uC=
DO ,1 SUB #3 <- #112 YMTB4|{
DO ,1 SUB #4 <- #0 *m9,_~t
DO ,1 SUB #5 <- #64 6d#
V
DO ,1 SUB #6 <- #238 (v$$`zh
DO ,1 SUB #7 <- #26 s2M|ni=
DO ,1 SUB #8 <- #248 {rWFgn4Li
DO ,1 SUB #9 <- #168 &0QtHcXpR
DO ,1 SUB #10 <- #24 /ng+IC3
DO ,1 SUB #11 <- #16 gyAKjLqqpi
DO ,1 SUB #12 <- #158 FQGh+.U
DO ,1 SUB #13 <- #52 _/%,ZoZ2
PLEASE READ OUT ,1 L#X!.
PLEASE GIVE UP V=DT.u
+/Q?<*[
zMW[Xx!
Java +7|Q d}\X
public class Hello t_Rpeav
{ /pOK4"
public static void main(String[] args) d:1TSJff%/
{ Nw=mSW^E
System.out.println("Hello, world!"); 2Ed
} X__>r ?oJ
} 6pi^ rpo
x0 dO^D
Nq=r404
JSP ~[d |:]
<% m_n*_tX
out.print("Hello, world!"); 6fr@y=s2:
%> 'AjDB:Mt$
Bm&% N?9
\"^.>+
MIXAL .ECT
TERM EQU 19 the MIX console device number ?Pw(
ORIG 1000 start address -yH8bm'0"
START OUT MSG(TERM) output data at address MSG "8|a4Y+F
HLT halt execution P-~kxb9aa
MSG ALF "MIXAL" Lm}J&^>
ALF " HELL" WPzq?yK
ALF "O WOR" 8>y!=+9_
ALF "LD " 4:S?m(ah/
END START end of the program t,m},c(B:
,@*Srrw
uY'77,G_J
Nuva qqR8E&Y{
<..直接输出..> fR6.:7&
Hello, world! BvA09lK
XK7$Xbd
<..或者..> j/+e5.EX/
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<. WnL Ma|e
// 不带换行 ;[>g(W+
? "Hello, world!" hRWRXC9
J&bhR9sF
// 或者 rBY{&JhS
I||4.YT
// 带换行 j(SBpM
?? 'Hello, world!' uqMe%
.> hR1n@/nh
@<W^/D1#L
DD]e0 pa
OCaml 0p;pTc
let main () = -B l!s^-'
print_endline "Hello world!";; *U69rbYI
KnjowK
4v("qNw#
Pascal "\l O1D
program Hello; RN0=jo!58
begin Z<,$XvL
writeln('Hello, world!'); <#r/4a"V
end. MPg"n-g*
ao(lj
|{G GATni
Perl }F~4+4B^
#!/usr/local/bin/perl mm,be.
print "Hello, world!\n"; ZXR#t?D
`43X? yQ
Cm5:_K`;]
PHP HI}9"(t}
<?php q0l=S+0
print("Hello, world!"); )GpH5N'EI
?> z:_o3W.E
U=a'(fX
g;Lk 'Ky6
Pike j$z<wR7j0
#!/usr/local/bin/pike '.mHx#?7
int main() V>YZ^>oeH
{ Ym WVb
write("Hello, world!\n"); ;HOOo>%_K
return 0; %di]1vQ
} zL<<`u?
[4_JK
;F;"Uw
PL/I JGB 9Z
Test: procedure options(main); 1Y-m=~J7
declare My_String char(20) varying initialize('Hello, world!'); pRAdo="
put skip list(My_String); 79?%g=#=
end Test; )TmqE<[
!)}3[h0
Y<vsMf_U
Prolog YR{%pZp
goal jv
C.T]<B
write("hello,world!"). .=nx5yz
![{>$Q?5
@vC7j>*4B
Python 45u\v2,C3
#!/usr/local/bin/python %L\buwjy$
print "Hello, world!" *r&q;ER
},d`<^~
XU3v#Du
REXX c~1X/,biA
say "Hello, world!" nS53mLU)
1ud+~y$K
n8!qz:z/
Ruby QX'EMyK$
#!/usr/bin/ruby L6xLD X7y
print "Hello, world!\n"
UA{tmIC\
h#o3qY
]7d~,<3R
Scheme nJvDk h#h1
(display "Hello, world!") Jf/X3\0N7
(newline) XM+o e0:[
I.M@we/bR}
b* QRd
sed (需要至少一行输入) /%#LA
sed -ne '1s/.*/Hello, world!/p' =`b/ip5
#DN5S#Ic
{x+"Ru~7,
Smalltalk Q
UQ"2oC
Transcript show: 'Hello, world!' m5G9
B-\?
4TBK:Vm5
{G+pI2^
SNOBOL lYS+EVcR
OUTPUT = "Hello, world!" me#?1r
END g `)5g5
lE8M.ho\
0{8^)apII
SQL vBMuV pzO
create table MESSAGE (TEXT char(15)); Xy74D/ocui
insert into MESSAGE (TEXT) values ('Hello, world!'); P~>E
select TEXT from MESSAGE; j=%^CRum
drop table MESSAGE; hU}!:6G%[P
n>_EEw2/
:N826_q
Tcl 6(Qr!<
#!/usr/local/bin/tcl
tj:Q]]\M
puts "Hello, world!" b)SU8z!NV&
8fn7!
#SHmAB
TScript h "7:&=e
? "Hello, world!" Myl!tXawe8
%7X<:f|N8x
\WDL?(G<
Turing ]8}+%P,Q
put "Hello, world!" M*r/TT
m#D+Yh/y{n
-`iXAyr)m
UNIX-style shell \k#|[d5W
程序中的/bin/sh可改为您使用的shell an4^(SY
,~R`@5+
#!/bin/sh BVKr 2v
echo 'Hello, world!' "5KJ /7q!
g1je':
wH=L+bA>a
GUI COE,pb17
+s*OZ6i [
Delphi MWsjkI`
program HelloWorld; WcCJ;z:S?k
uses !n=?H1@
Dialogs; NhI&wl
begin D# $Fj
ShowMessage('Hello, World!'); W>ziA
end. {*=+g>RgD
UBmD
3|Zo
re\@v8w~
Nuva jm-J_o;}z6
<. QFP3S(
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK'])
c]#+W@$
.> `5[$ 8;
@}
nI$x.
B? Vr9H 7n
Visual Basic S~dD ;R
MsgBox "Hello, world!" KjrUTG0oA
'或者 #Ub"Ii
Print "Hello, world!" wD|3Czc
*4i)aj
O8;`6r
Visual FoxPro L|y4u;-Q
? "Hello, world!" F{:ZHCm
0XrB+nt
b7
pD#v
X11 X5@SLkJ-`
用一个程序 ^w0V{qF{
[79 eq=
xmessage 'Hello, world!' (,5oqU9s@
O'6zV"<P
用C++和gtkmm 2 p.r \|
Zz" b&`K
#include <iostream> 7}r!&Eb
#include <gtkmm/main.h> TZ`@pDi
#include <gtkmm/button.h> Q9(J$_:
#include <gtkmm/window.h> Qz T>h
using namespace std; $Hx00
h o
*%G$[=
class HelloWorld : public Gtk::Window U~~Y'R\NU
{ 1g_(xwUp+
public: 6sRe. ct<