“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。 +5-fk>o
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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》。 }{mG/(LX8
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以下是用不同语言写成的Hello World程序的几个例子: !-RwB@\
Ada h!Y?SO.b
with Ada.Text_Io; use Ada.Text_Io; 5[<F_"x
procedure Hello is ph#efY`a:
begin 8}z3CuM
Put_Line ("Hello, world!"); XN(tcdCG
end Hello; T3rn+BxF 7
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汇编语言 zDd5cxFdZ
<`+zvUx^?
x86 CPU,DOS,TASM eJ:Yj
~X`<
MODEL SMALL n.Vtc-yZU
IDEAL C$K+=jT
STACK 100H K7Gm-=%
agW9Go_F[
DATASEG 2Y;!$0_rv
HW DB 'Hello, world!$' B.6`cM^
97 S? ;T
CODESEG r w\D>}\
MOV AX, @data ngLJ@TP-
MOV DS, AX gD1+]am
MOV DX, OFFSET HW YLmjEs%
MOV AH, 09H RpAiU
INT 21H 1 KB7yG-#6
MOV AX, 4C00H ^r4|{
INT 21H e{JVXc[D
END X(b1/lzA
6}STp_x
S\b K+
x86 CPU,GNU/Linux,NASM tIp{},bQ^
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). rg*^w!
;Enter this into "hello.asm" then type: 9fMSAB+c%
;"nasm -f elf hello.asm" {NV:|M !
;"ld hello.o -o hello" v~aLTI
;"./hello" EIPnm%{1
cyHU\!Z*Zq
section .data ;data section declaration eK*W=c#@
msg db 'Hello World!',0AH p_9g|B0D
len equ $-msg ;string length on_H6Y@B52
i7(~>6@|
section .text ;code section declaration hMWo\qM
global _start ;entry point (start of execution) Zd+>
_start: mov edx,len ;string length 7O9n!aJ
mov ecx,msg ;string start |mvM@V;^8{
mov ebx,1 ;file handle: stdout ]/[0O+B?
mov eax,4 ;sys_write [n!x&f8Xh
int 80h ;kernel system call b@!:=_Mr
MISE C[/
mov ebx,0 ;return value k{1b20
mov eax,1 ;sys_exit KDBY9`08
int 80h ;kernel system call ^ `je
. wmkj
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x86 CPU,Windows,MASM32 )gjGG8Ee
.386 s{B_N/^
.model flat,stdcall _6LH"o3
option casemap:none La]4/=a
;Include 文件定义 Qi"'bWX@
include windows.inc 9GE]<v,_[
include user32.inc {IrJLlq
includelib user32.lib E)Srj~$d
include kernel32.inc qJURPK
includelib kernel32.lib LC76 Qi;|k
;数据段 fSr`>UpxC
.data xh`Du|jvm
szCaption db 'A MessageBox!',0 (qbc;gBy
szText db 'Hello,world!',0 -? Ejbko
;代码段 x.o3iN[=
.code 7G2vYKC'
start: UFL0 K
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK m3B\)2B
invoke ExitProcess,NULL 9[Y*k^.!
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1P \up
end start ^ISQ{M#_
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AWK ZRUh/<\[
BEGIN { print "Hello, world!" } D*qzNT@`LR
K# /Ch5?
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BASIC .1 Vu-@
传统版BASIC(例如GWBASIC): M{G$Pk8[
dbg|VoNf
10 PRINT "Hello, world!" rrYp'L
20 END 9X.gg$P
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或在提示符输入: Up'."w_zE
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?"Hello, world!":END 2=Jmi?k
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现代版BASIC(例如Quick BASIC): +B](5 z4
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Print "Hello, world!" 2}59 7Hb
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以下的语句在Quick BASIC中同样有效: 3b,=
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? "Hello,world!" P&h/IBA_
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BCPL 9DmSs=A
GET "LIBHDR" O~nBz):2
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LET START () BE xu`d`!Tx
$( H7y&N5.V
WRITES ("Hello, world!*N") ZWov_
$) </8be=e7p
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Befunge )`e^F9L
"!dlrow olleH">v 3x,Aczb
, M^Q&A R'F
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Brainfuck ;G iI'M
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< |2WxcW]U.%
+++++++++++++++.>.+++.------.--------.>+.>. b/T20F{W\o
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#include <stdio.h> ru#T^AI*^
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int main(void) i!s~kk
{ Lw!?T(SK
printf("Hello, world!\n"); 1v>
return 0; L#83f]vG
} Wm];p qN
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C++ 5q0BG!A%T
#include <iostream> IwZZewb-a
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int main() uzat."`d'
{ U[K0{PbY
std::cout << "Hello, world!" << std::endl; AAeQ- nbP
return 0; *[XN.sb8E
} qk"oFP6
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C++/CLI 9q@z[+X
int main() !UUmy% 9
{ c,b`N0dOKL
System::Console::WriteLine("Hello, world!"); +9=@E
} 6qz!M
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E.5*Jr=J
C# (C Sharp) R#[QoyJ
class HelloWorldApp ;]l{D}
{ {9m!UlTtw
public static void Main() < -@,
{ )<H
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System.Console.WriteLine("Hello, world!"); es*_Oo1
} e+d6R[`M
} 7cOg(6N
Z
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b.w(x*a
COBOL pw(U< )
IDENTIFICATION DIVISION. Vsm%h^]d
PROGRAM-ID. HELLO-WORLD. os"[Iji
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ENVIRONMENT DIVISION. j?Jd@(*y$
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DATA DIVISION. +Y.uZJ6+
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PROCEDURE DIVISION. D>"{H7mY
DISPLAY "Hello, world!". goBKr: &]w
STOP RUN. Nd]%ati?
taD T;t
Aoy1<8WP%
Common Lisp n+RUPZ
(format t "Hello world!~%") J1u@A$4l?
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hK9t}NE.O
DOS批处理 sg9x?Bx9
@echo off yv#c=v|
echo "Hello, world!" X&FuqB
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B'lxlYV1
Eiffel j4
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class HELLO_WORLD c5mhl;+'
3ZJagJ\O
creation 2gC&R1H
make 4LKs'$:A=
feature &d|VH y+
make is )T$fk
local 9-Nq[i"
io:BASIC_IO >w]k3MC
do >1)@n3. <O
!!io ,N@Icl
io.put_string("%N Hello, world!") #G4~]Qml
end -- make
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end -- class HELLO_WORLD wEHrer
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Erlang ;]#4p8lh+
-module(hello). n\8[G[M
-export([hello_world/0]). uX5--o=C
f)s_e
hello_world() -> io:fwrite("Hello, World!\n"). ^1FZ`2u;
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coP$7Q .
Forth g ]PLW3
." Hello, world!" CR $M3A+6["H
SUnmp
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Fortran S1^Mw;?P
WRITE(*,10) |uBot#K|
10 FORMAT('Hello, World!') -z~ V
STOP =R24h
END ~bWWu`h
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c7TWAG_+
HTML h
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<HTML> (+Nmio
<HEAD> ;x0 KaFk
<TITLE> Hello World! </TITLE> 4[V6so 0
</HEAD>
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<BODY> q$2taG}
<p>Hello World!</p> u b>K^
</BODY> vJjj+:
</HTML> *y\tns U
q D>Y}Z!
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HQ9+ \,IDLXqp
H JU2' ~chh
K|J#/
nF[eb{GR`
INTERCAL w!h{P38
PLEASE DO ,1 <- #13 3SB7)8Id1
DO ,1 SUB #1 <- #238 Kmf-l*7}
DO ,1 SUB #2 <- #112 ve]95w9J
DO ,1 SUB #3 <- #112 )Jjw}}$}Y
DO ,1 SUB #4 <- #0 /s0VyUV=
DO ,1 SUB #5 <- #64 kC#B7*[RM
DO ,1 SUB #6 <- #238 B>nd9Z '
DO ,1 SUB #7 <- #26 eMd1%/[
DO ,1 SUB #8 <- #248 ,`2xfVa-
DO ,1 SUB #9 <- #168 ;8xn"G0}a
DO ,1 SUB #10 <- #24 3&d+U)E
DO ,1 SUB #11 <- #16 eOmxA<h
DO ,1 SUB #12 <- #158 /(L1!BPP9m
DO ,1 SUB #13 <- #52 xMGd'l?
PLEASE READ OUT ,1 ]mU*Y:<
PLEASE GIVE UP a}]@o"
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Java /OtQk-E
public class Hello w8@|b}
{ Oua/NF)
public static void main(String[] args) SmEd'YD!J
{ WW/m
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System.out.println("Hello, world!"); ?\$/#zak
} 2Yf;b9-k
} ;+Kewi;<
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M@86u^80
JSP 83(P_Y:
<% ,
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out.print("Hello, world!"); n>+W]I&E
%> -Af`AX
XD>@EYN<X
^/YAokj
MIXAL <NsT[r~C
TERM EQU 19 the MIX console device number iiFKt(
ORIG 1000 start address ,Yt&PE
START OUT MSG(TERM) output data at address MSG HpC4$JMm
HLT halt execution 'bO? =+c
MSG ALF "MIXAL" J4^cd
ALF " HELL" D[y|y3F
ALF "O WOR" J}u1\Id%
ALF "LD " 3CRBu:)m
END START end of the program ?uBC{KQ}Y
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Nuva s*WfRY*=V
<..直接输出..> DKCy h`
Hello, world! @_nhA/rlc
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<..或者..> Q1B!W
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<. i kiy>W8
// 不带换行 1mM52q.R4
? "Hello, world!" }7v2GfEkM
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// 或者 bGa":|}F
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// 带换行 r!uAofIi_
?? 'Hello, world!' 03;(v%
.> @vh>GiR){
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s3^SjZb
OCaml %s yBm
let main () = GUXX|W[6
print_endline "Hello world!";; Br??Gdd
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Pascal 96j2D8=w
program Hello; n|6yz[N
begin 4 XQ?By
writeln('Hello, world!'); Q+dI,5YF
end. pn|{P<b\
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Perl \O~P
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#!/usr/local/bin/perl aQ.
\!&U
print "Hello, world!\n"; WI3!?>d
^ j7pF.j
~Sq >c3Wn
PHP 35T7g65;
<?php | <$O5b'
print("Hello, world!"); &aOOG8l
?> &jcr7{cD
Y8T.RS0
10^=1@U
Pike uy~j$ lrn
#!/usr/local/bin/pike v/dcb%
int main() ?`$4ZDM
{ fM{Vy])J
write("Hello, world!\n"); ZW"J]"A
return 0; 7Jk.U=vY
} t!GY>u>`
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k,,}N9
PL/I Jt"Wtr
Test: procedure options(main); W0k_"uI
declare My_String char(20) varying initialize('Hello, world!'); VM`."un]
put skip list(My_String); T5)?6i-N
end Test; /~:ztv\$M"
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wSDDejg
Prolog o^D{WH\p
goal 2+HiaYDZ
write("hello,world!"). P^UcpU,
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Python r|+Zni]
#!/usr/local/bin/python 2Xosj(H
print "Hello, world!" bmLNR
Qi M>59[
#@G2n@Hj
REXX Sl1N V
say "Hello, world!" cP,jC(<N
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#,sJd ^uI
Ruby TocqoYX{{
#!/usr/bin/ruby 4(NI-|q0
print "Hello, world!\n" w}iflAnjq
4'M#m|V
HhO$`YZ%>
Scheme {|cA[#j#
(display "Hello, world!") w[XW>4xK
(newline) KE_Ze\P
Ua4} dW[w
-{?Rq'H
sed (需要至少一行输入) |kn}iA@72p
sed -ne '1s/.*/Hello, world!/p' ;8!D8o(+
< mxUgU
?~$y3<[
Smalltalk <]<50
Transcript show: 'Hello, world!' pP .
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Z7 @#0;g{
SNOBOL 7W*OyH^
OUTPUT = "Hello, world!" 2:]Sy4K{
END @[^H*^1|g
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SQL c;WS !.
create table MESSAGE (TEXT char(15)); KP
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insert into MESSAGE (TEXT) values ('Hello, world!'); wz ,woF|
select TEXT from MESSAGE; .]"
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drop table MESSAGE; /a,q4tD@
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a P`;Nr=
Tcl _*+M'3&=
#!/usr/local/bin/tcl - na]P3 s
puts "Hello, world!" Gce![<|ph
zd}"8
dCinbAQ
TScript __a9}m4i7x
? "Hello, world!" 3KqylC&.
}\9qN! ol
v>,XJ 7P
Turing g}f@8;TY
put "Hello, world!" Q<M>+U;t
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UNIX-style shell 0g1uM:;
程序中的/bin/sh可改为您使用的shell 6pH.sX$!_
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#!/bin/sh Wg#>2)>
echo 'Hello, world!' y+c+ / L8
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GUI H#f
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+ 505
Delphi Er{yQIi0L
program HelloWorld;
Eg
;r]?|6
uses Cjw|.c`
Dialogs; um[.r,++
begin [z/OY&kF
ShowMessage('Hello, World!'); &Y\`FY\
end. 0(]C$*~mk
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