“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。 4(&sw<k
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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 $Fm73
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以下是用不同语言写成的Hello World程序的几个例子: ..Bf-)w
Ada Xxr"Gc[
with Ada.Text_Io; use Ada.Text_Io; Ud)2Mq1#M
procedure Hello is LC})aV|
begin |p`}vRv
Uh
Put_Line ("Hello, world!"); nQ#NW8*Fs
end Hello; ZoR6f\2M
6e%ZNw{#=
=0mn6b9-=
汇编语言 ?g4S51zpp
l7#2
e ORm
x86 CPU,DOS,TASM 5xhYOwQBo
MODEL SMALL R5=M{
IDEAL 6"yIk4u:
STACK 100H Y2$xlqQd"
`]F#j ]"
DATASEG Y2}m/7aF
HW DB 'Hello, world!$' /YHnt-}v,
q9(Z9$a(\
CODESEG BHt9$$Z|
MOV AX, @data La$?/\Dv)
MOV DS, AX BMb0Pu8
MOV DX, OFFSET HW RV),E:?
MOV AH, 09H xwojjiV
INT 21H B^Hhrz!
MOV AX, 4C00H xu.TS
INT 21H ]h'*L`
END @3`Pq2<
%xdyGAl:
pkc*toW
x86 CPU,GNU/Linux,NASM g`dAj4B
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). y.gjs<y
;Enter this into "hello.asm" then type: 10CRgrZ
;"nasm -f elf hello.asm" H18pVh
;"ld hello.o -o hello" F#a'N c9
;"./hello" w%$J<Z^-?
%ZX3:2
section .data ;data section declaration GHpP
*x
msg db 'Hello World!',0AH 6|QIzs<Z-X
len equ $-msg ;string length AbIYdFX B
Cy6%f? j
section .text ;code section declaration %7
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*
global _start ;entry point (start of execution) j%i6H1#.Z
_start: mov edx,len ;string length NUh+ &M
mov ecx,msg ;string start ?hKpJA'%
mov ebx,1 ;file handle: stdout ^*b11/7
mov eax,4 ;sys_write *BKIA
int 80h ;kernel system call |%uy{
BK1I_/_!
mov ebx,0 ;return value wQYW5X
mov eax,1 ;sys_exit f1|&umJ$
int 80h ;kernel system call -'T^gEd)c
C?g<P0h
-nY_.fp>
x86 CPU,Windows,MASM32 uOPLJ?%
.386 A'n{K#
.model flat,stdcall s#FX2r3=Fg
option casemap:none ;N!opg))d<
;Include 文件定义 0E#?H0<OeG
include windows.inc cUTG!
P\R
include user32.inc "
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includelib user32.lib lT_dzO
include kernel32.inc .9q`Tf
includelib kernel32.lib zT ")!Df>'
;数据段 VBz
G`&NG
.data Z GrDa
szCaption db 'A MessageBox!',0 V`}u:t7r
szText db 'Hello,world!',0 @zT2!C?^L
;代码段 akzKX}
.code c]NZGn*
start: m2[J5n?zLL
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK JvYs6u
invoke ExitProcess,NULL gnlU
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ;&XC*R+
end start |}Z2YDwO/
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AWK .f`KP!p.
BEGIN { print "Hello, world!" } j:U6q,f]
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BASIC uG(XbDZZ1W
传统版BASIC(例如GWBASIC): EPU3Jban
P?Kg7m W
10 PRINT "Hello, world!" XO}SPf-
20 END 9JO1O:W
TP mb]j
或在提示符输入: 3g5D[>J'
,%U\@*6=
?"Hello, world!":END Y^eF(
!e}4>!L,(^
现代版BASIC(例如Quick BASIC): o_&Qb^W
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Print "Hello, world!" 6
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以下的语句在Quick BASIC中同样有效: wI?AZd;`'
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? "Hello,world!" oo|Nu+
K+`deH_d
&}d5'IRT
BCPL szp.\CMz
GET "LIBHDR" T1;>qgp4b
NMESGNa)z
LET START () BE 9]:F!d/
$( eQ<GNvm
WRITES ("Hello, world!*N") .M0pb^M
$) bSa]={}L(
dw%g9DT
@#yl_r%
Befunge 0@RVM|
"!dlrow olleH">v =b>e4I@
, x M{SFF
^_@ 7{38g
K;]Dh?
)*&61
Brainfuck NG:
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< e^UUR-K%
+++++++++++++++.>.+++.------.--------.>+.>. 9r
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ysFp$!9Ux
C %2'Y@AX`
#include <stdio.h> Qe`Nb4xf
{FR+a**
int main(void) 9Dd`x7$a
{ TWdhl9Ot
printf("Hello, world!\n"); A@e!~
return 0; u/%Z0`X
} h{^MdYJ
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@_?Uowc8
C++ zKThM#.Wa
#include <iostream> jWso'K
MHS|gR.c
int main() dRUmC H
{ ;A0ZcgF
std::cout << "Hello, world!" << std::endl; ={50>WXE
return 0; oSl}A,aQ(
} [d=BN ,?
cbW=kQc_
q NUd "%S
C++/CLI @]L$eOV_
int main() S";}gw?r6
{ Eo@rrM:
System::Console::WriteLine("Hello, world!"); .Dy2O*`
} o1H6E1$=
I_|W'%N]
&_' evZ8
C# (C Sharp) a!.Y@o5Ku
class HelloWorldApp ?8)k6:
{ uM9Gj@_
public static void Main() 3dgPP@7d$
{ KON^
System.Console.WriteLine("Hello, world!"); Rb0{W]opt+
} a..LbQQ
} KBA&s
[-^xw1:
=-avzuy#
COBOL O7p=|F"
IDENTIFICATION DIVISION. oo1h"[
PROGRAM-ID. HELLO-WORLD. p{&o{+c
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ENVIRONMENT DIVISION. 0CI\Yd=
%K0Wm#)
DATA DIVISION. WA5.qw
#-l+cu{
PROCEDURE DIVISION. =[0|qGzg
DISPLAY "Hello, world!". #;h>
x
STOP RUN. ]2_=(N\Kt
Q)5V3Q]@^
TXqtE("BDl
Common Lisp hJ?PV@xy
(format t "Hello world!~%") 6 kD.
obGvd6\
$&s V.fGu
DOS批处理 M2nUY`%#v
@echo off
9&s>RJ
echo "Hello, world!" J2k4k
sIRfC<
/P
)GOio+{H
Eiffel )ib$*dmUP
class HELLO_WORLD QFFFxaeJg
VdGpreRPC
creation [4+I1UR`
make xEufbFAN?
feature b`;Cm)@X!)
make is HTSk40V
local m@YK8c#$
io:BASIC_IO .&n!4F'
do hJ75(I
*j
!!io kpMo7n
io.put_string("%N Hello, world!") #!P>.".
end -- make v=DC3oh-
end -- class HELLO_WORLD u R]8ZT")
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T>,[V:
Erlang
|{MXDx
-module(hello). *]c~[&x5&
-export([hello_world/0]). NMzq10M=6
ssl.Y!
hello_world() -> io:fwrite("Hello, World!\n"). :.(A,
F6_en z
'_ys4hz}
Forth H`jnChD:M'
." Hello, world!" CR u[nLrEnD
^OK;swDW
9zm2}6r4
Fortran QkYKm<b
WRITE(*,10) A.(e=;0bu
10 FORMAT('Hello, World!') p[}~Z|(
STOP HE0m#
END I/u>Gt
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R`,|08E
HTML tD,I7%|@
<HTML> B &3sV+
<HEAD> 2I7|hZ,
<TITLE> Hello World! </TITLE> o3:BH@@
</HEAD> m=a^t
<BODY> a'O-0]g,
<p>Hello World!</p> g*!1S
</BODY> Bve',.xH
</HTML> tjQ6[`
dV
/Es
KGmAnN
HQ9+ ,:0!+1
H szXqJG8|
fh`}~ aQ
z
G`|)
INTERCAL h)s&Nqg1B
PLEASE DO ,1 <- #13 w%(D4ldp
DO ,1 SUB #1 <- #238 9U3 .=J
DO ,1 SUB #2 <- #112 <@c@`K
DO ,1 SUB #3 <- #112 g!Ui|]BI9
DO ,1 SUB #4 <- #0 Iu^I?c[
DO ,1 SUB #5 <- #64 |W}D_2
DO ,1 SUB #6 <- #238 :k2J
&@8
DO ,1 SUB #7 <- #26 _>3#dk
DO ,1 SUB #8 <- #248 E&)o.l<h|
DO ,1 SUB #9 <- #168 m ;wj|@cF
DO ,1 SUB #10 <- #24 V{X/y N.u
DO ,1 SUB #11 <- #16 =Z..&H5i
DO ,1 SUB #12 <- #158 H|/"'t
OZ
DO ,1 SUB #13 <- #52 VO /b&%
PLEASE READ OUT ,1 g+Y &rz
PLEASE GIVE UP =&~ K;=:
n*caP9B
@9l$jZ~x
Java 2nCHL'8N
public class Hello X]dN1/_
{ EAE#AB-A
public static void main(String[] args) w=^~M[%w
{ )(pgJLW
System.out.println("Hello, world!"); L]l?_#*x
} ]ZH6
.@|
} HcrlcxwM\i
5UX- Qqr
M~)iiKw~MY
JSP W{1l?Wo
<% 8"rK
out.print("Hello, world!"); -![{Zb@
%> 5acC4v!T
#TcX5
B] Koi1B
MIXAL %.8(R
&
TERM EQU 19 the MIX console device number ;u<F,o(
ORIG 1000 start address Swgvj(y;!A
START OUT MSG(TERM) output data at address MSG V7vojm4O
HLT halt execution X^i3(N
MSG ALF "MIXAL" vzF6e eaD
ALF " HELL"
ONUa7
ALF "O WOR" j"+6aD/lv
ALF "LD " :*-O;Yw?S@
END START end of the program D;OPsNQ
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N:EljzvP}
Nuva =6N=5JePB
<..直接输出..> ReGT*+UN
Hello, world! 3@* ~>H
*z]P|_:&G
<..或者..> @6-3D/=
@KJmNM1]V
<.
&a6-+r
// 不带换行 ;CuL1N#I
? "Hello, world!" G]dHYxG
pV1;gqXNS
// 或者 0*j\i@
<~e*YrJ?-
// 带换行 5f75r
?? 'Hello, world!' 2o7o~r
.> BF"eVKA
M>i *e
u3DFgl3-7
OCaml (l/i#
let main () = }a%Wu 7D
print_endline "Hello world!";; .!'rI7Kz'i
Kr`.q:0GK
3%u: c]-wF
Pascal VeH%E.:
program Hello; yr)e."#S
begin '=d y
=
writeln('Hello, world!'); g^U-^f
end. a, `B.I
RK_z!%(P
8jiBLZkRf
Perl k8cR`5@PK
#!/usr/local/bin/perl swMR+F#u*
print "Hello, world!\n"; S<5.}c R
^}kYJvqA
-:wV3D
PHP %v^qQWy=*
<?php V1A7hRjxvG
print("Hello, world!"); yK mHTjX=
?> 3Q,p,
"*KOU2}C
knWI7
Pike d8WEsQ+)A
#!/usr/local/bin/pike &fnfuU$
int main() |r4&@)
{ ,pW^>J
write("Hello, world!\n"); {@Z*.G^
return 0; $$R->
} 8:]5H}Hi
r)<n)eXeD
syb$%
PL/I {q&A/
Test: procedure options(main); p4K
8L'nZ
declare My_String char(20) varying initialize('Hello, world!'); 5KssfI
a
put skip list(My_String); GF0Utp:Zf;
end Test; z] |Y
Ge24Lp;Y6
o/!a7>xO4
Prolog C%P.`Nx A
goal Nt[&rO3s
write("hello,world!"). 0IsnG?"
54f?YR
/|<0,oz oJ
Python @2\UjEo~
#!/usr/local/bin/python ">nFzg?Y
print "Hello, world!" 0JhUncx
/!y3ZzL
3W3d $
REXX H$&P=\8n
say "Hello, world!" lPz5.(5'
=.9tRq
6|1#Prj
Ruby ~SEIIq
#!/usr/bin/ruby eT8h:+k
print "Hello, world!\n" , qhv(
*y W9-(
+R31YR8C0
Scheme S_Vquw(+
(display "Hello, world!") eh3CVgH91;
(newline) 11JO [
o7g6*hJz
` $[`C/h
sed (需要至少一行输入) [+:KIW<
sed -ne '1s/.*/Hello, world!/p' r\|"j8
TJs@V>,
@2 SL$0!QA
Smalltalk &oDu$%dkT
Transcript show: 'Hello, world!' %'dsb7n
TJb&f<
4_\]zhS
SNOBOL vpk~,D07yR
OUTPUT = "Hello, world!" E+eC #!&w
END &MP8.(u `
l"
H/PB<.
}iR!uhi#
SQL H3S u'3
create table MESSAGE (TEXT char(15)); p*=9Ea:
insert into MESSAGE (TEXT) values ('Hello, world!'); a#,lf9M
select TEXT from MESSAGE; yy\d<-X~
drop table MESSAGE; 6EG`0h6
x0L,$Ol
e1K{*h
Tcl bJ6v5YA%
#!/usr/local/bin/tcl iS28p
puts "Hello, world!" }5ONDg(I~
\Eyy^pb
!q*]_1
TScript =/HTe&
? "Hello, world!" C#.d
sl
B4 # gT
Yc
V*3`
Turing 6j~'>w(F
put "Hello, world!" H3o Um1
rW9ULS2d
h}P""
UNIX-style shell bC]GL$ph9*
程序中的/bin/sh可改为您使用的shell FDRpK5cw
f.u[!T
#!/bin/sh I*8_5?)g<
echo 'Hello, world!' a~[]Ye@H
26c1Yl,DMn
u|E9X[%
GUI 5,WDmhJ
m2Q#ATLW
Delphi ,vUMy&AV
program HelloWorld; n!\&X9%[8
uses i52:<<