“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。 I`rN+c:
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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》。 Z"_8l3
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以下是用不同语言写成的Hello World程序的几个例子: JGTsVa2
Ada {wj%WSQj/y
with Ada.Text_Io; use Ada.Text_Io; !ehjLFS? _
procedure Hello is 1iLo$
begin 2IRARZ,3
Put_Line ("Hello, world!"); ?[m1?
end Hello; AWx@Z7\z"g
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汇编语言 +6P[TqR
ab%I&B<b
x86 CPU,DOS,TASM ~%g,Uypi
MODEL SMALL ,d38TN
IDEAL zIu/!aw
STACK 100H *jWh4F,
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DATASEG WysWg7,r
HW DB 'Hello, world!$' &Tuj`DL
zhd1)lgY
CODESEG "0[`U(/
MOV AX, @data a^@.C5
MOV DS, AX AG9DJ{T
MOV DX, OFFSET HW )UF'y{K}
MOV AH, 09H 1/w8'Kf'u
INT 21H h]t v+\0
MOV AX, 4C00H %<a3[TQd`\
INT 21H ej&.tNvq
END ,52 IR[I<T
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x86 CPU,GNU/Linux,NASM h
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;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). #)xlBq4cZ
;Enter this into "hello.asm" then type: 8tQL$CbO
;"nasm -f elf hello.asm" <nD@4J-A0
;"ld hello.o -o hello" zEtsMU
;"./hello" aK;OzB)
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section .data ;data section declaration k?&GL!?
msg db 'Hello World!',0AH N<a%l J
len equ $-msg ;string length K-#d1+P+
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section .text ;code section declaration BlU&=;#r5>
global _start ;entry point (start of execution) xatq
_start: mov edx,len ;string length lGWz
mov ecx,msg ;string start U'(zKqC
mov ebx,1 ;file handle: stdout H@G$K@L
mov eax,4 ;sys_write Wq<oP
int 80h ;kernel system call FI[BZZW
QY&c=bWAX"
mov ebx,0 ;return value rDbtT*vN
mov eax,1 ;sys_exit JG'%HJ"D
int 80h ;kernel system call i]?
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x86 CPU,Windows,MASM32 gggD "alDx
.386 2XeyNX
.model flat,stdcall }BI6dZ~2A
option casemap:none y,|2hrj/0E
;Include 文件定义 s9CmR]C
include windows.inc CZu=/8?
include user32.inc BQ Vro;#Jc
includelib user32.lib QJ(%rvn3
include kernel32.inc =LV-n
includelib kernel32.lib U!r8}@
;数据段 XK3O,XM
.data |6bvUFr
szCaption db 'A MessageBox!',0 oj Y.6w
szText db 'Hello,world!',0 ~nmFZ]y
;代码段 X5/fy"g&
.code C 4C/
start: ^U5N!"6R
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK }aE'
invoke ExitProcess,NULL xO>z
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;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Y`]P&y
end start s)]T"87H'_
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AWK W@r<4?Oat
BEGIN { print "Hello, world!" } D|)_c1g
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BASIC ;BH.,{*@B
传统版BASIC(例如GWBASIC): 3\j`g
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10 PRINT "Hello, world!" '=Zm[P,
20 END DoQ^caa@
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或在提示符输入: ):>?N`{V
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?"Hello, world!":END YAT@xZs-
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现代版BASIC(例如Quick BASIC): KqJln)7
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Print "Hello, world!" B//*hH >F
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以下的语句在Quick BASIC中同样有效: Uvm.|p_V
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? "Hello,world!" mwLf)xt0'
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BCPL gdTW
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GET "LIBHDR" ]R)wBug
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LET START () BE `9[n5-t
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WRITES ("Hello, world!*N") 5U7,,oyh
$) :stHc,
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|=o -
Befunge z*jaA;#
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, &nr{-][
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Brainfuck tkHmH/'7
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< oX:&;KA
+++++++++++++++.>.+++.------.--------.>+.>. ZYWGP:Y
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C _h^.`Tz,
#include <stdio.h> /+%aSPQ
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int main(void) kEC^_sO"
{ "*<vE7
printf("Hello, world!\n"); t adeG
return 0; V~ KWy@7
} f?/OV *
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C++ 59 g//;35@
#include <iostream> H ;=^
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int main() 7O*Sg2B
{ Cn5"zDK$
std::cout << "Hello, world!" << std::endl; ;E
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return 0; HoAg8siQ
} RRS)7fFm
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C++/CLI WZ6{9/%:
int main() SS%Bde&<{
{ ]N]Fb3
System::Console::WriteLine("Hello, world!"); 9FSa=<0wE
} mB>0$l y
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C# (C Sharp) PRiE2Di2S
class HelloWorldApp kZ@UQ{>`
{ wg0_J<y]
public static void Main() 4_VgJ9@
{ 5&p}^hS5
System.Console.WriteLine("Hello, world!"); +|dLR*s
} ~
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} HN367j2 e
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COBOL ',`Qx{tQ)
IDENTIFICATION DIVISION. aE)1LP
PROGRAM-ID. HELLO-WORLD. `)8~/G%
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ENVIRONMENT DIVISION. w=_^n]`R
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DATA DIVISION. .yfp-n4H
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PROCEDURE DIVISION. 3AdYZ7J
DISPLAY "Hello, world!". "ADI.
STOP RUN.
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Common Lisp 2Cy,#X%j>
(format t "Hello world!~%") 9a=:e=q3#
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DOS批处理 ;Ngk"5
@echo off OHAU@*[lM
echo "Hello, world!" S+.>{0!S"
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Eiffel 'L3MHTM>[
class HELLO_WORLD \36 G``e
nU{Qi;0
creation ?0dmw?i
make }[|9vF"g.y
feature H0OO+MCe
make is 1ED7.#g
local IfB .2e`
io:BASIC_IO Z}0{FwW"4
do M .6BFC
!!io qZ>_{b0f
io.put_string("%N Hello, world!") 2>X yrG
end -- make mgH~GKf^
end -- class HELLO_WORLD T$0)un
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Erlang ML|?H1m>
-module(hello). UZFs]z!,k
-export([hello_world/0]). AEj%8jh
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hello_world() -> io:fwrite("Hello, World!\n"). 4Dzg r,V
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Ms5qQ<0v_
Forth $s1/Rmw
." Hello, world!" CR Q}\\0ajS)
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Fortran ;lE=7[UJ3X
WRITE(*,10) #E
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10 FORMAT('Hello, World!') Jjj;v2uSK
STOP Ppl :_Of
END j|[$P4w}U
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HTML -a|b.p
<HTML> ua=7YG
<HEAD> V!. Y M)B
<TITLE> Hello World! </TITLE> H1?C:R
</HEAD> #'f5owk>,
<BODY> $FT6c@&y
<p>Hello World!</p> _\IA[-C+O
</BODY> sd+_NtH
</HTML> =pmG.>Si
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F> Ika=z,
INTERCAL 8VU(+%X
PLEASE DO ,1 <- #13 WQCnkP
DO ,1 SUB #1 <- #238 &m36h`tM
DO ,1 SUB #2 <- #112 T; [T`
DO ,1 SUB #3 <- #112 d,i4WKp
DO ,1 SUB #4 <- #0 fO5L[U^`
DO ,1 SUB #5 <- #64 ( -q0!]E
DO ,1 SUB #6 <- #238 $tW E9_
DO ,1 SUB #7 <- #26 l{3zlXk3z
DO ,1 SUB #8 <- #248 n?6^j8i
DO ,1 SUB #9 <- #168 _?felxG[
DO ,1 SUB #10 <- #24 %LHt{:9.
DO ,1 SUB #11 <- #16 njJTEUd">
DO ,1 SUB #12 <- #158 7Cz=;
DO ,1 SUB #13 <- #52 E*T6kp^b
PLEASE READ OUT ,1 9-{.W Z
PLEASE GIVE UP Av n-Ug
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Java )AieO-4*
public class Hello $aT '~|?
{ &
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public static void main(String[] args) )L
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{ 0wqw5KC
System.out.println("Hello, world!"); rVOF
} )xg8#M=K
} m7A3i<6p
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JSP M/F<W!
<% 'Q]Wk75
out.print("Hello, world!"); d7g$9&/q
%> *b{Hj'H aH
p[|V7K'Z
7,?ai6{
MIXAL kAUL7_>6X
TERM EQU 19 the MIX console device number JB5%\
ORIG 1000 start address OiC|~8
START OUT MSG(TERM) output data at address MSG N1y,~Z
HLT halt execution I
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MSG ALF "MIXAL" 2XUIC^<@s
ALF " HELL" lxD~l#)^ln
ALF "O WOR" _E0yzkS
ALF "LD " 9.~_swkv
END START end of the program ]CU)#X<J
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Nuva !3c+}j-j
<..直接输出..> v?nGAn
Hello, world! %,S:^Rvv
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<..或者..> lt5Knz2G,Z
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<. MfI+o<{r
// 不带换行 +Swl$ab
? "Hello, world!" F2(^OFh
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// 或者 4},Y0 QXw
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// 带换行 )`|`PB
?? 'Hello, world!' BdvpG
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d[;&2Jz*
OCaml %[L/JJbP&Z
let main () = &R<K>i
print_endline "Hello world!";; ) P+<=8@a
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1!+0]_8K
Pascal 3$_- 0>
program Hello; #w^Ot*{!N
begin 97>|eDc Y
writeln('Hello, world!'); XTb.cqOC
end. >)>~S_u
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51AA,"2[_
Perl KeyHxU=?
#!/usr/local/bin/perl La7}zXx
print "Hello, world!\n"; BT -Y9j
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}LWrtmc
PHP :.-KM7tDI1
<?php L&5zr_
print("Hello, world!"); m+pK,D~{"
?> WdJeh:h
c~\^C_
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Pike $['`H)z
#!/usr/local/bin/pike QS,_= <
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int main() \D%n8O
{ OMjx,@9
write("Hello, world!\n"); PUd/|Rc/}
return 0; u
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} 5!6iAS+I
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!D
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PL/I S->S p
Test: procedure options(main); sv\=/F@n
declare My_String char(20) varying initialize('Hello, world!'); Y\(?&7Aax
put skip list(My_String); puF*WxU)
end Test; #Oa`P
--`W1!jI@
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Prolog nu16L$]
goal tKi^0vE8
write("hello,world!"). gp{Z]{io
gi? wf
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Python X5Y. o&
#!/usr/local/bin/python b%j4W)Z
print "Hello, world!" uy=<n5`oNG
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REXX 'HWPuWW
say "Hello, world!" 0+rBGk
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M!PK3
Ruby ~~,#<g[
#!/usr/bin/ruby g3(?!f
print "Hello, world!\n" B@vup {Kg
!ZN"(0#qz
+ldgT"
Scheme aSSw>*?Q
(display "Hello, world!") Q(hAV
(newline) <$nMqUu0
Wb{8WPS
**n109R
sed (需要至少一行输入) Q>/[*(.Wd
sed -ne '1s/.*/Hello, world!/p' ':T"nORC
?=Mg"QU
M[=sQnnSFW
Smalltalk G^\.xk]
Transcript show: 'Hello, world!' dM5N1$1,
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k
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SNOBOL ~0{F,R.$
OUTPUT = "Hello, world!" vqwSOh|P9
END &<5oDdC
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SQL {y>Kcfc/?E
create table MESSAGE (TEXT char(15)); ur/:aI
insert into MESSAGE (TEXT) values ('Hello, world!'); @IBU{{
select TEXT from MESSAGE; 1,sD'iNb
drop table MESSAGE; @0%^\Qf2
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@p7*JLO
Tcl F[oTc^dr
#!/usr/local/bin/tcl ZOHGGO]1M
puts "Hello, world!" `S/;S<';
TSP#.QY
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TScript X>rv{@K bL
? "Hello, world!" izP>w*/nO
qH*Fv:qnM
^:m7Qd?Z[
Turing G~\=:d=^,`
put "Hello, world!" (fnp\j3w
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m[?gN&%nc
UNIX-style shell Vg?
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程序中的/bin/sh可改为您使用的shell ~@ hiLW
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#!/bin/sh GMoE,L
echo 'Hello, world!' *8xMe
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Ha20g/UN.
GUI H5p&dNO
g=n /w
Delphi LD)P.
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program HelloWorld; xw&N[y5
uses {vAv ;m
Dialogs; o51jw(wO
begin EEO)b_(
ShowMessage('Hello, World!'); U>kL|X3 V
end. *`wgqin
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G8!* &vR/
Nuva c7(Lk"G8
<. YST{
h{
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) yixAG^<