“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。 fm2M i~}0
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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》。 e^fKatI1
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以下是用不同语言写成的Hello World程序的几个例子: @^4M~F%
Ada }T*xT>p^3
with Ada.Text_Io; use Ada.Text_Io; W;@ae,^
procedure Hello is 8J(zWV7 r
begin #d i_V"
Put_Line ("Hello, world!"); ?~y(--.t;T
end Hello; 2n+XML
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Bc@r*zb
汇编语言 YV!V9
oX]1>#5UMg
x86 CPU,DOS,TASM 25@j2K (
MODEL SMALL L}S4Zz18
IDEAL O?J:+L(
STACK 100H M{kh=b)V
*L8HC8IbH
DATASEG BNm va
HW DB 'Hello, world!$' Ol5xyj
umn~hb5O
CODESEG %_=R&m'n`
MOV AX, @data fvfVBk#
MOV DS, AX o 0
#]EMr
MOV DX, OFFSET HW .Qw@H#dtW
MOV AH, 09H D\&y(=fzf
INT 21H WM l ^XZO
MOV AX, 4C00H *t*&Q /W
INT 21H zMqEMx9
END \B ^sJ[n
G+^$JN=
_!p$47
x86 CPU,GNU/Linux,NASM eu|q
{p
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). +&8Ud8Q
;Enter this into "hello.asm" then type: Q>c6ouuJ
;"nasm -f elf hello.asm" Y_YIJ@
;"ld hello.o -o hello" .`#R%4Xl
;"./hello" !OVEA^6
L;t~rW!1
section .data ;data section declaration [cAg'R6
msg db 'Hello World!',0AH "LaX_0t)
len equ $-msg ;string length H 1X]tw.
/<pQ!'/G
section .text ;code section declaration ]@}BdMlHp
global _start ;entry point (start of execution) )P+GklI{4
_start: mov edx,len ;string length yQ&%* ?J
mov ecx,msg ;string start 1b%7FrPkd
mov ebx,1 ;file handle: stdout R'HA>?D
mov eax,4 ;sys_write =9@yJ9c-
int 80h ;kernel system call '*Mb
.s"
&bgi0)>
mov ebx,0 ;return value iC2nHZ*,
mov eax,1 ;sys_exit z(68^-V=:
int 80h ;kernel system call
x`l;
;
w:+#,,rwzV
X[Gk!dr#
x86 CPU,Windows,MASM32 QNwAuH T
.386 [t)i\ }V
.model flat,stdcall Rw8m5U
option casemap:none &nw~gSe
;Include 文件定义 Ou,_l
include windows.inc YEoT_>A$dB
include user32.inc = }lA|S
includelib user32.lib eE_XwLE
include kernel32.inc 7f,WzvV
includelib kernel32.lib L
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;数据段 zm"g,\.d
.data <]qd9mj5
szCaption db 'A MessageBox!',0 Lbkn Sy C
szText db 'Hello,world!',0 JLn<,Gn)<\
;代码段 %"fKZ
.code z5'nS&x
start: {# _C
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK f+~!s 2uw
invoke ExitProcess,NULL M 7$4KFNp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> !jnIXvT1qy
end start &J M;jSz
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+Z]%@"S?
AWK vBnHG-5;P
BEGIN { print "Hello, world!" } 6u;(R0n
n9-[z2n
gP%!
BASIC @!O{>`
传统版BASIC(例如GWBASIC): Z"T(8>c;g
r0bPaAKw
10 PRINT "Hello, world!" T
bWZw
20 END >vy+U
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或在提示符输入: gOAluP
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?"Hello, world!":END TvwIro
:!hH`l}p
现代版BASIC(例如Quick BASIC): 1=.kH[R
0E1)&f
Print "Hello, world!" ZfikNQU9r
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以下的语句在Quick BASIC中同样有效: <Rt@z|Zv
_3[BS9
? "Hello,world!" 6s2g +[
qNL~m'
pjM|}i<'Q
BCPL 5C?1`-&65V
GET "LIBHDR" "PtH
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*^_!W'T{j
LET START () BE \M@8# k|
$( Ka{Zoi]
WRITES ("Hello, world!*N") 5Oq ;V:7
$) J< M;vB)
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+
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Befunge $g;xw?~#
"!dlrow olleH">v "FS.&&1(
, L9)&9
/f
^_@ itvdzPO
a| cD{d
>YhqL62!a
Brainfuck .#|pje^
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< wv-8\)oA
+++++++++++++++.>.+++.------.--------.>+.>. UkV] F]
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v%[mt`I
C Q2=~
#include <stdio.h> 9Z
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:g";p.~=
int main(void) XU7bWafy
{ $)V4Eu;
printf("Hello, world!\n"); -2_$zk*n
return 0; Wz]S+IpY
} &@-glF5
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bP@_4Dy
C++ XQ8Imkc
#include <iostream> 1 Y&d%AA
eGil`:JY"
int main() vxx3^;4p
{ (6{
VMQ
std::cout << "Hello, world!" << std::endl; P+UK@~D+G
return 0; wQc w#
} y[rLk
8>9+w/DL
u'p J9>sC
C++/CLI X;NTz75
int main() %Z4=3?5B"9
{ ~T~v*'_h
System::Console::WriteLine("Hello, world!"); #v-!GK_<
} ./'n2$^3
?da 3Azp
IpxjP\
C# (C Sharp) 9iE66N>z
class HelloWorldApp :83"t-O8[
{ 7F4]EA^
public static void Main() E.9F~&DPJ<
{ DVl:s
System.Console.WriteLine("Hello, world!"); x3 S
} Eqc$*=
} U<b!$"P9
2}t wt
f/ZE_MN2
COBOL f]}F_]
IDENTIFICATION DIVISION. Y$^\D'.k
PROGRAM-ID. HELLO-WORLD. 2 OTpGl
<4g^c&
ENVIRONMENT DIVISION. S SXSgp
/v[-KjTj7
DATA DIVISION. :w+Rs+R
|=POV]K
PROCEDURE DIVISION. x3Uv&
DISPLAY "Hello, world!". (Wn'.|^%
STOP RUN. H =jnCGk
XvdhPOMy
@w0[5ZAj
Common Lisp (EX
(format t "Hello world!~%") w3@te\
zjmc>++<t
xcig'4L
DOS批处理 v6:DA#0
@echo off ?6dtvz;K+?
echo "Hello, world!" k$UBZ,=iC
CvN~
XHr{\/4V
Eiffel dQ[lXV[}v
class HELLO_WORLD *u}):8=&R
}W<L;yD
creation mI# BQE`p6
make B.?yHaMI[
feature iJi|* P5dw
make is oa|0=
local L*z;-,
io:BASIC_IO P*SXfb"HC
do aI{[W;43T
!!io kBzzi^cl
io.put_string("%N Hello, world!") gT.-Cf{
end -- make X$*
'D)
end -- class HELLO_WORLD }/VHeHd
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w!V
Erlang jhLh~.
8
-module(hello). D&shrKFx
-export([hello_world/0]). zin,yJ
61'7b`:(hi
hello_world() -> io:fwrite("Hello, World!\n"). OjN]mp-q
!4E:IM63
xn"g_2Hi
Forth ^tv*I~>J!
." Hello, world!" CR NQG"}=KA
Cv| :.y
wb}tN7~Y;
Fortran 9YJb~tuZ73
WRITE(*,10) sR6(8
10 FORMAT('Hello, World!') %_
~[+~#
STOP 0e7!_/9
END YblRwic
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HTML +FiV!nRkZ
<HTML> n'ro5D
<HEAD> =N=,;<6%A
<TITLE> Hello World! </TITLE> G<-.{Gx)
</HEAD> W{0:8_EI
<BODY> Q-"FmD-Yw
<p>Hello World!</p> ;Gi w7a)
</BODY> u7mj
</HTML> :.dQY=6I
mT.F$Y9
*=v
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HQ9+ h2q]!01XP
H 5?b9[o+D
,'!&Z *
`#R$
INTERCAL #'T|,xIr-Q
PLEASE DO ,1 <- #13 /$n${M5!
DO ,1 SUB #1 <- #238 1Jahu!c?
DO ,1 SUB #2 <- #112 $\bH5|Hk]
DO ,1 SUB #3 <- #112 @:[/uqL
DO ,1 SUB #4 <- #0 U0rz 4fxc
DO ,1 SUB #5 <- #64 &^<94l
DO ,1 SUB #6 <- #238 sJr$[?
DO ,1 SUB #7 <- #26 C>+UZ
DO ,1 SUB #8 <- #248 3!,%;Vz=
DO ,1 SUB #9 <- #168 {\V)bizY;
DO ,1 SUB #10 <- #24 x!< C0N>?z
DO ,1 SUB #11 <- #16 9xWrz;tzo
DO ,1 SUB #12 <- #158 ,
?%`Ky/
DO ,1 SUB #13 <- #52 yaf2+zV*
PLEASE READ OUT ,1 b &JPLUr
PLEASE GIVE UP y|p:^41Ro
Qu\E/T`
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Java ;
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public class Hello DGU$3w
{ '~@WJKk
public static void main(String[] args) yqK82z5U*R
{ /'I/sWEV
System.out.println("Hello, world!"); <W?,n%
} 4_mh
} y>G{GQ
rh!4 1
K|B1jdzL
JSP gs!{'=4wT
<% [J^,_iN[.
out.print("Hello, world!"); v}!,4,]:&
%> cq 0jM;@d
k@Hu0x
&8;mcM//4
MIXAL #C+0m`
TERM EQU 19 the MIX console device number 53L)+\7w
ORIG 1000 start address +|}~6`
START OUT MSG(TERM) output data at address MSG %B~`bUHjq
HLT halt execution SQeQ"k|P%
MSG ALF "MIXAL" !{4p+peqJV
ALF " HELL" snyx$Qx(
ALF "O WOR" cZwQ{9>
ALF "LD " D^A_ 0@
END START end of the program ZFRKh:|
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Nuva 6G(k{S
<..直接输出..> "u%$`*
Hello, world! I*#~@:4*
pG"
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<..或者..> Ad"::&&Wk
$)'{+1
<. vOqYt42
// 不带换行 ^iGIF~J9
? "Hello, world!" GxvVh71zP
@}FRiPo6
// 或者 S`J_}>
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// 带换行 >V]>h&`
?? 'Hello, world!' nZ{~@E2
.> MM97$
Me8d o;
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F`-? 3]\3
OCaml LJBoS]~
let main () = 0S' EnmG
print_endline "Hello world!";; Qc3!FW<26
0xPML}|V
Db2G)63
Pascal d>(dSKx
program Hello; eo@:@O+bm
begin IlaH,J7n
writeln('Hello, world!'); xUG|@xIwc
end. = U^B,q
A$-{WN.W
Pg`^EJ+
Perl 6!bf,T]
#!/usr/local/bin/perl t rHj7Nw
print "Hello, world!\n"; ^@6eN]
^m5{:\
Xk
}#Vo
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PHP "e_ED*
<?php v+\E%H
print("Hello, world!"); Oy H:
?> UboOIx5:
*EotYT
6E
Pike s&c^Wr
#!/usr/local/bin/pike Jcy`:C\Ay
int main() \+5 L.Q
{ AKS(WNGEp
write("Hello, world!\n"); -5E<BmM
return 0; FMR0?\jnT
} `E}2|9
8x+K4B"oe
2)U3/TNe
PL/I jL2f74?1
Test: procedure options(main); A?_2@6Y^
declare My_String char(20) varying initialize('Hello, world!'); +8~S28"Wg3
put skip list(My_String); cW MZw|t
end Test; )>=`[$D1t
7C&`i}/t
#!<x|N?_<
Prolog u'=#~'6
goal 0m?ul%=
write("hello,world!"). & ??)gMM[
YpuA,r;"
1pcSfN :"1
Python 3lKIEPf6r
#!/usr/local/bin/python ~)()PO
print "Hello, world!" )hn,rmn
(P
,@<-h* m
}3+q}_3
REXX d` ^@/1tO
say "Hello, world!" zmuq4-.
hI?<F^b
{a>)VZw_#
Ruby 'dBzv>ngD
#!/usr/bin/ruby Ad]r )d{
print "Hello, world!\n" 4E"qpy \(
t);5Cw_
Cu!4ha.e`
Scheme $bMeL7CN
(display "Hello, world!") 5m_@s?P[
(newline) u_mm*o~)g
#?aR,@n
fF>H7
sed (需要至少一行输入) ;1"K79
sed -ne '1s/.*/Hello, world!/p' +[z(N
jP+4'O!s[
.&*Tj}p
Smalltalk KnbP@!+c
Transcript show: 'Hello, world!' gg6&Fzp
vnIxI a
J :,
SNOBOL DrW]`%Ql
OUTPUT = "Hello, world!" <nIU]}q
END F@?QVdY1q7
+ J_W }G
RPLr7Lb
SQL 7\jH?Zi
create table MESSAGE (TEXT char(15)); J\2F%kBej?
insert into MESSAGE (TEXT) values ('Hello, world!'); Ef7Kx49I
select TEXT from MESSAGE; 654PW9{(
drop table MESSAGE; Z3[,Xw
M`"2;
W>+<r9Rt4
Tcl c5Offnq'1
#!/usr/local/bin/tcl 9N9|h y
puts "Hello, world!" hf%W grO.
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Q>||HtF$A
TScript &M<431y
? "Hello, world!" 1f~_# EIC
6Q\n<&,{
F= #zy#@.
Turing W&r