“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。 LfSUY
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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》。 OX`GN#yl
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以下是用不同语言写成的Hello World程序的几个例子: Y:Tt$EQ
Ada :jp$X|
with Ada.Text_Io; use Ada.Text_Io;
"S} hcAL/
procedure Hello is +mF 2yh
begin aD`e]K ^L
Put_Line ("Hello, world!"); zU=[Kc=$
end Hello; OehB"[;+
hA19:H=7R0
m!>'}z
汇编语言 bWzc=03
-m-WUox4"
x86 CPU,DOS,TASM t|XC4:/>T
MODEL SMALL by3kfY]4s
IDEAL d-2I_ )9
STACK 100H qMj
e,Y
e?fjX-
DATASEG KFrmH
HW DB 'Hello, world!$' AxQ/
yodrX&"
CODESEG OnJSu
z>-
MOV AX, @data P+l^Ep8P
MOV DS, AX +:8YMM#9V
MOV DX, OFFSET HW 3W
WxpTU
MOV AH, 09H 1j-i nj`
INT 21H ?(hQZR
0e
MOV AX, 4C00H f
}e7g d]M
INT 21H *wx^mB9
END +Rd{ ?)2~
25KZe s)
U?C{.@#w
x86 CPU,GNU/Linux,NASM fxa^SV
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). /1GZN *I
;Enter this into "hello.asm" then type: FA GVpO[
;"nasm -f elf hello.asm" U9OF0=g
;"ld hello.o -o hello" (G;*B<|A
;"./hello" ;]ew>P)
FCAu%lvZT
section .data ;data section declaration AV`7>@
msg db 'Hello World!',0AH FNO
lR>0e
len equ $-msg ;string length 4s2ex{$+MA
'0?E|B]Cp%
section .text ;code section declaration bHG>SW\]`?
global _start ;entry point (start of execution) ?':'zT
_start: mov edx,len ;string length t;6/bT-
mov ecx,msg ;string start >b${rgCvQ
mov ebx,1 ;file handle: stdout cK/odOi
mov eax,4 ;sys_write >QPS0Vx[
int 80h ;kernel system call \'b-;exH
c9k,Dc
mov ebx,0 ;return value .
2Q/D?a
mov eax,1 ;sys_exit t,YAk
?}
int 80h ;kernel system call hY'%SV
p
;sJ2K"c
<C xet~x
x86 CPU,Windows,MASM32 W%:zvqg
v
.386 f>PU# D@B
.model flat,stdcall 7 {<lH%Tn
option casemap:none ]d(}b>gR~(
;Include 文件定义 $SgD|
9
include windows.inc p.olXP
include user32.inc :.^rWCL2
includelib user32.lib 2%H(a)
include kernel32.inc #$QY[rf=6
includelib kernel32.lib ttRH[[E(
;数据段 14zzWzKx
.data ShxX[k
szCaption db 'A MessageBox!',0 5eJd$}Lbc
szText db 'Hello,world!',0 6Z=H>w
;代码段 6.=b^6MV
.code 1j(,VW
start: =jh:0Q<43+
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK upKrr
invoke ExitProcess,NULL #nz$RJsX
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 3~'F^=T.Y
end start XCoOs<O:@
&GAx*.L
aKZD4;
AWK [?2mt`g
BEGIN { print "Hello, world!" } c9
c Nlp
%m`QnRX?D
ij^!TY[0
BASIC -OxHQ
传统版BASIC(例如GWBASIC): s q$|Pad[
Uk4">]oct
10 PRINT "Hello, world!" 8&bj7w,K
20 END X'<xw
;C%EF
或在提示符输入: 1C{n\_hR
+J9lD`z
?"Hello, world!":END %cL:*D4oz
SqQB>;/p
现代版BASIC(例如Quick BASIC): fZC,%p
on$a]zx'@
Print "Hello, world!" l|{<!7a
v2Y=vr
以下的语句在Quick BASIC中同样有效: 29oEkaX2o
!NtY4O/
? "Hello,world!" Y'9deX+
g11K?3*%Q
g(^l>niF:
BCPL =\.|'
GET "LIBHDR" w8Yff[o
|Sq>uC)
LET START () BE $G[##j2
$( b :00w["
WRITES ("Hello, world!*N") JZ
[&:
$) L`v,:#Y
q)X&S*-<o~
w93,N+es6
Befunge *yx:nwmo
"!dlrow olleH">v FqfeH_-U
, l(W3|W#P
^_@ cA kw5}P
oZCO$a
HYS7=[hv6
Brainfuck !RI&FcK
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 5l#)tX.by
+++++++++++++++.>.+++.------.--------.>+.>. ewY X \
ececN{U/
=*I9qjla[?
C E;N8{Ye_
#include <stdio.h> F(9T;F
n>'}tT)U
int main(void) #XZ?,neY
{ `4MPXfoBL
printf("Hello, world!\n"); K""04Ew*pV
return 0; [@czvPi
} "d'@IN
>8Y >B)
B4C`3@a
C++ $Fj7'@1(
#include <iostream> dj#<,e\
o<y7Ut
int main() .?qS8:yA
{ -c
tZ9+LL
std::cout << "Hello, world!" << std::endl; be_t;p`3
return 0; 'JydaF~>
} !VW#hc\A5
?`xId;}J#7
Tym!7H2
C++/CLI :
SNp"|
int main() sx;1V{|g
{ y<
84Gw_
System::Console::WriteLine("Hello, world!"); 5o?bF3
} /dAIg1ra
YL]x>7T~4t
/D12N'VaE
C# (C Sharp) VCI G+Gz
class HelloWorldApp DIY WFVh
{ YG_3@`-<
public static void Main() 4s~o
{ 01J.XfCd6
System.Console.WriteLine("Hello, world!"); H:`r!5&Qb5
} V>hy5hDpH
} F9hCT)
<M=K!k
$d'Gh2IGA
COBOL <_+8 c{G
IDENTIFICATION DIVISION. BN=,>-O%
PROGRAM-ID. HELLO-WORLD. VH/_0
I'";
ENVIRONMENT DIVISION. u}$?r\H'(
C..O_Zn{g
DATA DIVISION. iMSS8J
# 8A|-u=3
PROCEDURE DIVISION. 6gv.n
DISPLAY "Hello, world!". (Q@+W|~
STOP RUN. U;_;_
g)zy^aDf
Kxg09\5i
Common Lisp rei<{woX
(format t "Hello world!~%") ,,?t>|3
a}yJ$6xi
{x+jFj.
DOS批处理 _+GCd8d
@echo off 1.+MX(w
echo "Hello, world!" W];4P=/
VGSe<6Hh
G 2mv6xK'
Eiffel a 3HS!/
class HELLO_WORLD XG0,@Ly
'vXrA
creation 7w9) ^
make b3Do{1BV
feature E0YXgQa
make is l)?c3
local 9s}--_k?F2
io:BASIC_IO 5)}xqE"x
do :Z<-J`
!!io jYU#]
|k~
io.put_string("%N Hello, world!") VB Ce=<
end -- make yCwQ0|
end -- class HELLO_WORLD |
#,b1|af
+!X^E9ra
sGV%O=9?2
Erlang wJ{M&n1H
-module(hello). >4;A(s`
-export([hello_world/0]). ydpsPU?wj5
SgJQH7N
hello_world() -> io:fwrite("Hello, World!\n"). [;c#LJ/y
[Ga9^e$Zv
_9<Ko.GVq
Forth 3]wV`mD
." Hello, world!" CR Od!j+.OY<
;yH/GN#O
K]RkKMT,
Fortran >J4_/p>Qs
WRITE(*,10) *-2u0 %
10 FORMAT('Hello, World!') K%S k{'
STOP xD1w#FMlQs
END JTVCaL3Z
8G9V8hS1#B
0%vXPlfnY
HTML J|s4c`=
<HTML> *NDzU%X8
<HEAD> Q+S>nL!*#1
<TITLE> Hello World! </TITLE> x}-r Ar
</HEAD> Ix"uk6 h
<BODY> i2EB.Zlv
<p>Hello World!</p> o#G7gzw)
</BODY> .x}ImI
</HTML> V]IS(U(
F`'e/
B6,"S5@
HQ9+ ,rQznE1e
H "",V\m
k0%4&pU
xZBmQ:s',S
INTERCAL o <sX6a9e
PLEASE DO ,1 <- #13 V"gnG](2l
DO ,1 SUB #1 <- #238 u"tv6Qp
DO ,1 SUB #2 <- #112 $$AKz\
DO ,1 SUB #3 <- #112 RoPz?,u
DO ,1 SUB #4 <- #0 }56"4/ Z
DO ,1 SUB #5 <- #64 Z?X
^7<
DO ,1 SUB #6 <- #238 H+F'K
XP*K
DO ,1 SUB #7 <- #26 ?mnwD ]u
DO ,1 SUB #8 <- #248 eo"6 \3z
DO ,1 SUB #9 <- #168 W&)OiZN
DO ,1 SUB #10 <- #24 ?:~ `?
DO ,1 SUB #11 <- #16 BT>8
DO ,1 SUB #12 <- #158 yjc:+Y{5'
DO ,1 SUB #13 <- #52 .BuY[,I+
PLEASE READ OUT ,1 anHP5gD
PLEASE GIVE UP (',G
Ako
8&B{bS
sJ25<2/
Java 9w (QM-u
public class Hello Rax}r
{ 3%>"|Ye}A
public static void main(String[] args) ^<7)w2ns
{ { 6*h';~
System.out.println("Hello, world!"); 's+ Fd~'
} TAIcp*)ZM
} IYb@@Jzo
xqX~nV#TB
}>fL{};Z"
JSP n"$D/XJO
<% D O(FG-R
out.print("Hello, world!"); yD$rls:v<
%> "3W!p+W
P8piXG
PKty'}KF
MIXAL t
:sKvJ
TERM EQU 19 the MIX console device number "EDn;l-Q
ORIG 1000 start address p~En~?<
START OUT MSG(TERM) output data at address MSG 3T%WfS+
HLT halt execution aa8WRf
MSG ALF "MIXAL" }r9f}yX9Q
ALF " HELL" 3;@t{rIin
ALF "O WOR" 6(VCQ{
ALF "LD " iE0A-;:5
END START end of the program y;3vr1?
S2w|\"
A{Jv`K
Nuva qJKD|=_
<..直接输出..> hT#[[md"
Hello, world! `fj(xrI
mM&H;W
<..或者..> 8S&`
JIQS'r
<. FD,M.kbg
// 不带换行 /k l0(='
? "Hello, world!" \M'b%
J+kxb"#d
// 或者 \ 2*<Pq
VrrCW/o
// 带换行 25o + ?Y<
?? 'Hello, world!' pTX{j=n!
.> /|bir6Y:
"n=`{~F
HFB2ep7N
OCaml ZOi8)Y~
let main () = |JtdCP{
print_endline "Hello world!";; FU E/uh
OXK?R\ E+
i\XOk!
Pascal HJ:s)As
program Hello; >| rID
begin _A;jtS)SY
writeln('Hello, world!'); l%oie1g l
end. ]Jq1b210
|.0/~Xy-
s
'u6Ep/V
Perl ^8a,gA8.
#!/usr/local/bin/perl -"UK NB!
print "Hello, world!\n"; (&=-o(
SL?
!
RQ
D: NBb!
PHP MLG%+@\
<?php "[q/2vC
print("Hello, world!"); FAz shR
?> k9vr6We'
(dLt$<F
f
nX!wN
Pike Kzb&aOw
#!/usr/local/bin/pike b54<1\&
int main() ?kI-o0@O.
{ @TdPeTw\
write("Hello, world!\n"); N4}j,{#
return 0; &jT>)MXPu
} U@@#f;&
Nq/,41
NIY0f@1z-
PL/I H 0aDWFWS
Test: procedure options(main); $6Lgaz
declare My_String char(20) varying initialize('Hello, world!'); Ia=wf"JS)
put skip list(My_String); RFU(wek
end Test; 1Thr74M
<x,u!}5J
mnzamp
Prolog ;cH|9m:Y
goal KwndY,QD
write("hello,world!"). [rC-3sGar
rRRiqmq
3k`"%R.H
Python 8 P.t
#!/usr/local/bin/python 17I{_C
print "Hello, world!" N)K};yMf
E ~<SEA
WO?EzQ ?
REXX R]VY
PNns
say "Hello, world!" zW,m3~XX:
O8(;=exA
I\&..e0l
Ruby q(M[ij
#!/usr/bin/ruby .h~M&d!
print "Hello, world!\n" qAUqlSP5
\K.i8f,
2f9~:.NgF
Scheme p+SFeUp
(display "Hello, world!") }{[H@uhjH
(newline) FbO-K-
$Q{)AN;m
8>RGmue
sed (需要至少一行输入) {mY<R`Ee
sed -ne '1s/.*/Hello, world!/p' s-Q-1lKV,
eS8tsI
,> A9OTSN\
Smalltalk TviC1 {2
Transcript show: 'Hello, world!' Tw/kD)u{
R"Nvnpm
S5*wUd*p#
SNOBOL .^>[@w3
OUTPUT = "Hello, world!"
m(,vymt
END *[*LtyCQt4
VI,z7
\
\[Op:^S
SQL i;;CU9`E2q
create table MESSAGE (TEXT char(15)); dE!{=u(!i
insert into MESSAGE (TEXT) values ('Hello, world!'); lEIX,amwa
select TEXT from MESSAGE; kbJ/7
drop table MESSAGE; mq`N&ABO!K
v%n'_2J =^
M` Jj!
Tcl SL" ;\[uI
#!/usr/local/bin/tcl -|B?pR
puts "Hello, world!" %_;q<@9)
\u?z:mV
;W]NT4p
TScript Y$uXBTR`y/
? "Hello, world!" oe_l:Y%
h@=H7oV7k
1dh_"/
Turing d|k6#f-E
put "Hello, world!" BoYWx^VHx^
Q%KH^<
!SEHDRp
UNIX-style shell $'btfo4H
程序中的/bin/sh可改为您使用的shell LbOjKM^-
&>\E
>mJ
#!/bin/sh `Jhu&MWg
echo 'Hello, world!' ~z#Faed=a
A^
$9[_
$j0]+vT
GUI QFU;\H/
m:5 *:Ii.
Delphi o[q
Kf
program HelloWorld; pj;cL]L
uses h.>6>5$n
Dialogs; /1:`?% ,2
begin hPF9y@lh
ShowMessage('Hello, World!'); ugcWFB5|
end. A1e| Y
(`x6QiG!
ZfM(%rx
Nuva y5B4t6M(
<. G`!#k!&r
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) jG)fM?
.> mj=$[y(
Yf&x]<rkCp
,+<NP}Yg#G
Visual Basic #X'!wr|-
MsgBox "Hello, world!" kKAK;JQ
'或者 :$."x
'
Print "Hello, world!" Zm& X $U
<\eHK[_*
^]o]'
Visual FoxPro jv<BGr=4;
? "Hello, world!" O&!>C7
S~0 mY}
m
Ta`=c0
X11 ,2q LiE>
用一个程序 )%Z<9k
Bm2"} =
xmessage 'Hello, world!' = zW}vm }
Zm,<