“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。 _u_|U
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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》。 nx`W!|g$`
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以下是用不同语言写成的Hello World程序的几个例子: +LWgby4q
Ada # 6?2 2Os
with Ada.Text_Io; use Ada.Text_Io; WH $*\IGJL
procedure Hello is *x#5S.i1
begin -"^"& )
Put_Line ("Hello, world!"); +&X>ul
end Hello; vcy+p]6KE-
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汇编语言 WpI5C,3Z!l
WV|9d}5
x86 CPU,DOS,TASM YE"MtL {
MODEL SMALL c7?|Tipc
IDEAL RvVF^~u
STACK 100H )086u8w )y
[sPLu)q2
DATASEG r 3T #Nv
HW DB 'Hello, world!$' M tDJ1I%
2j>C4Ck
CODESEG zS?}3#g0u
MOV AX, @data ;rCCkA6
MOV DS, AX V^9%+L+E5
MOV DX, OFFSET HW ~te{9/
MOV AH, 09H L(`q3>iC4.
INT 21H 6NFLk+kqN
MOV AX, 4C00H 2I4G=jM[
INT 21H =o"sBVj
END %HZ!s
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x86 CPU,GNU/Linux,NASM lQ.3_{"s
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). /KJWo0zo
;Enter this into "hello.asm" then type: Tc;BE
;"nasm -f elf hello.asm" 9fSX=PVRmQ
;"ld hello.o -o hello" uTrGb:^
;"./hello" rPW9lG
%%O_:@9x,
section .data ;data section declaration c$hoqi |tD
msg db 'Hello World!',0AH y3V47J2o
len equ $-msg ;string length c%n%,R>
#0qMYe>Y
section .text ;code section declaration exm*p/
global _start ;entry point (start of execution) R&R{I/;i*.
_start: mov edx,len ;string length Q},uM_"+
mov ecx,msg ;string start f V/
mov ebx,1 ;file handle: stdout rlDJHR6
mov eax,4 ;sys_write UB;~Rf( .
int 80h ;kernel system call !%C&hH\
*UG=dl#F#
mov ebx,0 ;return value P}p6{
mov eax,1 ;sys_exit O
>&,h^
int 80h ;kernel system call WgV[,(
+7)/SQM5
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x86 CPU,Windows,MASM32 <J1$s_^`
.386 !3at(+4
.model flat,stdcall dNs<`2m
option casemap:none KI<Vvcm
;Include 文件定义 BtWm ZaKi
include windows.inc }xzbg
include user32.inc ~hA;ji|I
includelib user32.lib oakm{I|k}
include kernel32.inc QNm.8c$
includelib kernel32.lib \?.M1a[
;数据段 _{?/4ZhA\+
.data o{QPW
szCaption db 'A MessageBox!',0 laFF/g;sRC
szText db 'Hello,world!',0 h|=&a0
;代码段 J
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.code w.0]>/C
start: h5#V,$
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK le`_
invoke ExitProcess,NULL {?'c|\n Li
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> G9\@&=
end start lhV'Q]s@6
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AWK oG;;='*
BEGIN { print "Hello, world!" } %8GY`T:^
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BASIC ViT$]Nv
传统版BASIC(例如GWBASIC): VlFDMw.4.+
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10 PRINT "Hello, world!" Bx&wS|-) D
20 END $lrq*Nf9c
vo DTU]pf
或在提示符输入: 'roZ:NE
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?"Hello, world!":END 76*5/J-
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现代版BASIC(例如Quick BASIC): u
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Print "Hello, world!" rRZ ,X%
sh"\ kk9
以下的语句在Quick BASIC中同样有效: 7e-l`]
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? "Hello,world!" ]LhNP}c
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BCPL `#~HCl
GET "LIBHDR" q[SUYb;,
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LET START () BE =#<TE~n2(
$( #zcnc$x\
WRITES ("Hello, world!*N") [0e}%!%M
$) C[O \aW
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Ls^$E
Befunge =2eG j'}
"!dlrow olleH">v `cr.C|RT:
, S)*eAON9
^_@ ^CwzAB
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i'%:z]hp9
Brainfuck q|%(47}z
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ^4yFLqrC
+++++++++++++++.>.+++.------.--------.>+.>. GZ];U]_
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C vx_v/pD
#include <stdio.h> >p 7e6%
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int main(void) {
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{ `_'I 9,.a
printf("Hello, world!\n"); vF K&.J
return 0; z<jWy$Ta;
} YDyi6x,
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pFg9-xd%
C++ ?8X+)nU@
#include <iostream> @3K 4,s
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int main() s3G3_&
{ Q[y75 [
std::cout << "Hello, world!" << std::endl; g9;}?h
return 0; }_L@CpG
} v:<UbuJw
zKWcDbj
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C++/CLI }IGr%C(3%
int main() kN>AY'1
{ G?MNM -2
System::Console::WriteLine("Hello, world!"); 7b,u|F
} >w?O?&Q$
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w7"Z@$fs
C# (C Sharp) *~|xj,md
class HelloWorldApp QP?Z+P<
{ Dg@>d0FW
public static void Main() 3D
k W
{ Px}#{fkS
System.Console.WriteLine("Hello, world!"); C``%<)WC
} #kV`G.EX
} W&6P%0G/
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COBOL GjA;o3(
IDENTIFICATION DIVISION. @M"h_Z1#
PROGRAM-ID. HELLO-WORLD. pVw)"\S%
c|Nv^V*2
ENVIRONMENT DIVISION. d3(T=9;f2
-iS\3P.
DATA DIVISION. mD)_quz.sk
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PROCEDURE DIVISION. Y2w 9]:J
DISPLAY "Hello, world!". g Bq, So
STOP RUN. 8lt P)K4
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+MeEy{;
Common Lisp pscCXk(|A`
(format t "Hello world!~%") 0%+T U4Xx
Xt /muV
<vA^%D<\~
DOS批处理 PZRpH
@echo off 5Y)!q?#H
echo "Hello, world!" fdzD6KZI
o;\0xuM@
2HMlh.R(C
Eiffel Srz.-,2 PF
class HELLO_WORLD 8Hs>+Udl
Y'Jb@l`$-
creation ^^%sPtp
make lvb0dOmY
feature VD.p"F(]
make is ^ow[XEB%
local X{ZBS^M
io:BASIC_IO >GgX-SZ%
do QKbX^C
!!io )D@1V=9,
io.put_string("%N Hello, world!") >)U 7$<&b
end -- make v/Z}|dT"
end -- class HELLO_WORLD NwuME/C7#
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Erlang ![:S~x1
-module(hello). 6,0pkx&Nv
-export([hello_world/0]). >&aFSL,f
-";'l@D=
hello_world() -> io:fwrite("Hello, World!\n"). xue-5 '
lb&tAl"D
?U2ed)zzw
Forth }jfU qqFd
." Hello, world!" CR L;5jhVy
co<){5zOT
7vcYI#(2
Y
Fortran QM9~O#rL
WRITE(*,10) dt)
BMF8
10 FORMAT('Hello, World!') -(qoz8H5
STOP b2H!{a"
END 0;3;Rs
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HTML <h
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<HTML> 1p23&\\~
<HEAD> Nj.(iBmr
<TITLE> Hello World! </TITLE> x-U:T.+{
</HEAD> *
C~
<BODY> 23y7l=.b/
<p>Hello World!</p> f3V&i)w(
</BODY> sxO_K^eD
</HTML> #:vos VqG
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=q^o6{d0"
HQ9+ W2yNEiH
H %7O`]ik:
"(/|[7D)
jY:(Tv3~
INTERCAL ?qw&H /R
PLEASE DO ,1 <- #13 {j,bV6X
DO ,1 SUB #1 <- #238 2ADUJ
DO ,1 SUB #2 <- #112 %zd1\We
DO ,1 SUB #3 <- #112 W]_+3qvZ
DO ,1 SUB #4 <- #0 LZM[Wg#
DO ,1 SUB #5 <- #64 .ymR%X_k
DO ,1 SUB #6 <- #238 BYVp~!u
DO ,1 SUB #7 <- #26 ZHICpL
DO ,1 SUB #8 <- #248 +sE8 1B
DO ,1 SUB #9 <- #168 ?9v!UT
DO ,1 SUB #10 <- #24 y*\ M7}](
DO ,1 SUB #11 <- #16 h^~eTi;c]Q
DO ,1 SUB #12 <- #158 ~0|~Fg
DO ,1 SUB #13 <- #52 L`x:Y>C(
PLEASE READ OUT ,1 Fmt5"3B
PLEASE GIVE UP \@['V
rd0BvQ9TK
l8GziM{lp
Java \?GUGs
public class Hello `\q4z-<-
{ j"_V+)SD
public static void main(String[] args) p."pI Bd
{ vV#Jl)
A
System.out.println("Hello, world!"); +tdt>)a
} w^p
'D{{
} 20zIO.&o
B HoZ}1_
"KW\:uc /
JSP QCa$<~c
<% >efYpd#^
out.print("Hello, world!"); g*-
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%> i <bFF03*S
mmTc.xh
&]pW##
MIXAL TxN#3m?G
TERM EQU 19 the MIX console device number A:p7\Kp;5}
ORIG 1000 start address ;TMH.E,h:
START OUT MSG(TERM) output data at address MSG z6|P]u
HLT halt execution E} Uy-
MSG ALF "MIXAL" 6rt.ec(
ALF " HELL" .4_EaQ;jX
ALF "O WOR" isDBNXV:
ALF "LD " 8\. #
END START end of the program K^A\S
n9t8RcJS:
4zpprh+`K
Nuva /r[0Dw
<..直接输出..> ub+>i
Hello, world! 0RYh4'=F
bX|Z||img
<..或者..> ~e~4S~{
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<. I#Iu:,OT
// 不带换行 7,j}]
? "Hello, world!" kIrME:
ut& RKr3
// 或者 jf*M}Q1jHE
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// 带换行 G5"UhnOD'
?? 'Hello, world!' lY.FmF}k
.> Cj_cu
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j@ UIN3
OCaml RA>xol~xy
let main () = T1M4@j
print_endline "Hello world!";; opte)=]J
}j+ZF'#
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VH
Pascal ="d}:Jl
program Hello; )(PA:j
begin r$=iM:kERC
writeln('Hello, world!'); %$`pD
I )
end. IZi1N
35B0L.R
fk#SD "iJ
Perl 2o6KVQ
#!/usr/local/bin/perl ^Ml)g=Fq
print "Hello, world!\n"; ;5PXPpJ
tP"C>#LO
zK k;&y|{
PHP Iy8Ehwejd
<?php \uQ(-ji
print("Hello, world!"); 2e/ JFhA
?> DFVaZN?~
^7Z)/c`"
jU@qQ@|
Pike $ze%!C
#!/usr/local/bin/pike (](:0H
int main() ,m8l
/wG
{ \gDf&I
write("Hello, world!\n"); jC@$D*"J
return 0; v'`C16&^]
} deQ0)A 4g
!-U5d9!
(05/}PhB`
PL/I 2%. A{!
Test: procedure options(main); oa}-=hG
declare My_String char(20) varying initialize('Hello, world!'); A=I]1r
put skip list(My_String); U$# ?Lw
end Test; TlQ#0_as[
Xb?P'nD
Cc$!TZq=
Prolog {tOu+zy
goal R',Q)<
write("hello,world!"). r[q-O&2&
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QM6
O:{I9V-=>s
Python |XtN\9V.
#!/usr/local/bin/python !X`
5
print "Hello, world!" c/^}
=t(
#i%it
CDK0 $W n
REXX ;v^tUyhCb
say "Hello, world!" i!*w'[G->Y
U rm&4&y
[v^T]L
Ruby ;;2XLkWu
#!/usr/bin/ruby 5 qt]~v%y
print "Hello, world!\n" zFN:C()ig
mHM38T9C%
b" 1a7
Scheme r.lH@}i%n
(display "Hello, world!") p3&/F=T;)
(newline) `J'xVq#O
*l)_&p
Zz!XH8sH
sed (需要至少一行输入) O6pswMhAc
sed -ne '1s/.*/Hello, world!/p' M56^p,
]e$mTRi*
ylUxK{
Smalltalk fFMGpibkM
Transcript show: 'Hello, world!' -Ds}kdxw
='`z
Y4_/G4C
SNOBOL }TzMWdT
OUTPUT = "Hello, world!" .__XOd}K
END |F=!0Id<
YiJnh47
({v$!AAv
SQL ^
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create table MESSAGE (TEXT char(15)); O:IU|INq8
insert into MESSAGE (TEXT) values ('Hello, world!'); JF!JY( U,
select TEXT from MESSAGE; Ew5(U`]
drop table MESSAGE; j1Fy'os"!
uUB,OmLN
umaF}}-Q{
Tcl Dq/_^a/1
#!/usr/local/bin/tcl )a
AKO`
puts "Hello, world!" ,)TtI~6Q
x_pS(O(C
4zkn~oy
TScript k|k
? "Hello, world!" ^I4'7]n-
Hbu8gqu
m2F2
Turing 2&MIt(\-
put "Hello, world!" Y,w'Op
##+|zka!U
ELf cZfJ
UNIX-style shell 8n+&tBq1
程序中的/bin/sh可改为您使用的shell L.ScC
]VtVw^ ir
#!/bin/sh mk(O..)2
echo 'Hello, world!' 4y\qJw)~U
W/!M
eTU&E
}Qyuy~-&^
GUI ~P8 6=Vw
^,*ED Yz
Delphi `Fnl<C<
program HelloWorld; t2skg
uses !~Gx@Ro
Dialogs; I@Pp[AyG
begin -sO[,
ShowMessage('Hello, World!'); sU! h^N$
end. 7#d>a=$h
Cuu yG8
d` %8qLIW
Nuva ^0)Mc"&{
<. BmR++ ?L
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) Oxo?\
:T
.> fFDI qX
O'm><a>8
O<7Q>m
Visual Basic t"x
8]Gy
MsgBox "Hello, world!" p4mi\~Q
'或者 M8dv
y!D
Print "Hello, world!" <Hd8Jd4f
vUm#^/#I
'D`O4TsP>
Visual FoxPro 8X Jg
? "Hello, world!" j5Kw0Wy7
ZByxC*Cz
Geyy!sr``
X11 B7PkCS&X
用一个程序 \|e>(h!l;
`_%UK=m
xmessage 'Hello, world!' _gU:!:}
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用C++和gtkmm 2 <;Q1u,Mc
@Wgd(Ezd
#include <iostream> Lzmdy0!'
#include <gtkmm/main.h> f@S n1c,Mk
#include <gtkmm/button.h> er@"4R0
#include <gtkmm/window.h> ?QA![
using namespace std; F6
mc<