“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。 =E~_F>SD
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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》。 >( sS4_O7N
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以下是用不同语言写成的Hello World程序的几个例子: -{yG+1
Ada E,4*a5Fi
with Ada.Text_Io; use Ada.Text_Io; f1d<xGx
procedure Hello is TI8EW
begin mrVN&.
Put_Line ("Hello, world!"); gX*
&RsF
end Hello; !Z; Nv
q?f-h<yRQ
:[Ie0[H/M
汇编语言 %<h2^H\O
7[}WvfN8#
x86 CPU,DOS,TASM FwQGxGZ
MODEL SMALL zXd#kw;
IDEAL Q2!RFtXV
STACK 100H nYK!'x$
b_@bS<wsF}
DATASEG *#'&a(hB!
HW DB 'Hello, world!$' I;mc:@R<
"fSK7%BP
CODESEG Ge76/T%{Q
MOV AX, @data HA0yX?f]
MOV DS, AX JJP!9<
MOV DX, OFFSET HW WVL\|y728s
MOV AH, 09H L_>LxF43
INT 21H QX9['B<
MOV AX, 4C00H }oii|=,#^
INT 21H ?j}
Fxr
END {|Fn<&G
@t8{pb;v
XJ3aaMh"
x86 CPU,GNU/Linux,NASM PS??wlp7
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ab<7jfFIa
;Enter this into "hello.asm" then type: =&vRT;6
;"nasm -f elf hello.asm" 'W[Nr
;"ld hello.o -o hello" ]T>YYz
;"./hello" d,t'e?
U[!wu]HMF
section .data ;data section declaration 0-U%R)Q
msg db 'Hello World!',0AH 75']fFO@!
len equ $-msg ;string length !]!9 $6n
'ExQG$t
section .text ;code section declaration mzTM&@
global _start ;entry point (start of execution) $`/F5R!
_start: mov edx,len ;string length &>hln<a>
mov ecx,msg ;string start wpm $?X
mov ebx,1 ;file handle: stdout 'S;l"
mov eax,4 ;sys_write jiLt *>I
int 80h ;kernel system call )`m/vYKWL
U9q6m3#$
mov ebx,0 ;return value `VRt{p
mov eax,1 ;sys_exit =]sM,E,n
int 80h ;kernel system call w Yr M2X@
(t-JGye>
@{8SC~ha
x86 CPU,Windows,MASM32 `z`"0;,7S
.386 </7?puVR
.model flat,stdcall =tfS@o/n
option casemap:none [Ma
d~;
;Include 文件定义 J(x42Q}*S
include windows.inc ?rv5Z^D'
include user32.inc gA:N>w&<X
includelib user32.lib k&\ 6SK/
include kernel32.inc `n~bDG>
includelib kernel32.lib Klk[h
;数据段 [ncOtDE
.data o_ SR
szCaption db 'A MessageBox!',0 28PT19&
szText db 'Hello,world!',0 9\W }p\c
;代码段 +;wu_CQu
.code ih/MW_t=m=
start: NhA_dskvo
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK :g=z}7!s
invoke ExitProcess,NULL &5F@u
IA
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> l*C(FPw4
end start Q[N6# C:(4
Z'L}x6
o w<.Dh
AWK f_GqJ7Gk]
BEGIN { print "Hello, world!" } H{3A6fb<
]za1=~[
%rZJ#p[e)=
BASIC |0$wRl+kN
传统版BASIC(例如GWBASIC): o Z#4<7K
7-hSso.'
10 PRINT "Hello, world!" h tn?iLq
20 END 2qD80W<1
b:uMON,H
或在提示符输入: GY%48}7
A!Ls<D.
?"Hello, world!":END }+8w
8}kY^"*&X
现代版BASIC(例如Quick BASIC): T};fy+iq
OK}+:Y
Print "Hello, world!" J`8bh~7
*MFsq}\ $
以下的语句在Quick BASIC中同样有效: K2glkGK
'8 ~E
? "Hello,world!" wv8WqYV
7VdG6`TDR
MR@*09zP(?
BCPL =gb.%a{R
GET "LIBHDR" _f8<t=R
4EiEE{9V
LET START () BE PKhH0O\_U
$( ?6gC;B
WRITES ("Hello, world!*N") OJUH".o
$) K 5SHt'P
)h0F'MzW
r1= :B'z
Befunge Jm|eZDp
"!dlrow olleH">v Vb`m3
, A3C#wJ
^_@ 85<zl|ZD
{%K(O$H#
#
4AyA$t
Brainfuck FbVdqO
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< x>^r%<WbX
+++++++++++++++.>.+++.------.--------.>+.>. -o\r]24
]:m}nJ_
[WDtr8L
C p-H q\DP
#include <stdio.h> XAV|xlfm
6_a42#
int main(void) gOpGwpYZ,
{ jjgjeY
printf("Hello, world!\n"); +j._NRXRH
return 0; }\E2Z[
} *7'}"@@
15i8) 4h
f>Mg.9gJ(
C++ @tvAI2W
#include <iostream> RzG<&a3B3s
<!#6c :(Q
int main() UwuDs2
t
{ n%lY7.z8d
std::cout << "Hello, world!" << std::endl; kDM\IyM<\
return 0; /jdq7CF
}
}xcEWC\
E"D+CD0
!JtVp&?
C++/CLI F2yc&mXyk
int main() Y4]USU!PA
{ hm=E~wv'L
System::Console::WriteLine("Hello, world!"); ?:(BkY,K5
} XOQj?Q7)U
lPL>8. j
aZGX`;3
C# (C Sharp) Iy\{)+}aS
class HelloWorldApp &CCp@" +
{ |cwGc\ES
public static void Main() KUG\C\z6=
{ nmlQ-V-
System.Console.WriteLine("Hello, world!"); !ydJ{\;
} }~Z1C0t
} bKsl'3~ k
ViqcJD
Fj<#*2{]B
COBOL ek~bXy{O`
IDENTIFICATION DIVISION. rtr0 d
PROGRAM-ID. HELLO-WORLD. &]gw[
`
TY[{)aH{S
ENVIRONMENT DIVISION. RX.n7Tb
^a~^$PUqI
DATA DIVISION. "71@WLlN
5bZf$$b
PROCEDURE DIVISION. Wu]Dpe
DISPLAY "Hello, world!". x{IxS?.j+
STOP RUN. Sns`/4S?6Z
E"7 iU
:d7Ju.*J
Common Lisp <$)F_R~T3
(format t "Hello world!~%") 2
F3U,}
P#5&D*`}h
GaMiu!|,
DOS批处理 `!<RP'
@echo off JiL%1y9|
echo "Hello, world!" t><AaYij_
MM8r*T4g/
ZW\}4q;[A
Eiffel ,TY&N-
class HELLO_WORLD J{"<Hgb
.c~`{j}
creation ng$`<~=)\
make Ar4@7
feature S<"T:Y&
make is P+r-t8
local Ht.0ug
io:BASIC_IO Ym~*5|
do _:4n&1{.E
!!io ni$7)YcF
io.put_string("%N Hello, world!") ^s<p5V
end -- make |Rk$u
end -- class HELLO_WORLD l!z0lh-J
jFYv4!\ju
n DLr17
Erlang Wt2+D{@8
-module(hello). 9
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-export([hello_world/0]). K1c@]]y)
k[3J5 4`g1
hello_world() -> io:fwrite("Hello, World!\n"). ~$7fU
OEc$ro=m*
> D:(HWL
Forth >P*wK9|(
." Hello, world!" CR $7%e|0jC
Zr`pOUk!4
:p^7XwX%w
Fortran ZujPk-
WRITE(*,10) @ %LrpD
10 FORMAT('Hello, World!') Y{~[N y E
STOP (9bFIvMc
END Y>}[c
8t3,}}TJ
'Q\I@s }
HTML fN4d^0&
<HTML> vMOI&_[\z
<HEAD> RGrra<
<TITLE> Hello World! </TITLE> -z"=d<@
</HEAD> Ra%" +=
<BODY> We]mm3M3
<p>Hello World!</p> vvEr}G
</BODY> gc|?$aE
</HTML> ~4HS
2\
s>8;At-
6 Fz?'Xf
HQ9+ cfn\De%.
H W10=SM}
7`,A]":;
iY
@MnnX
INTERCAL +r0ItqkM
PLEASE DO ,1 <- #13 (7 i@@
DO ,1 SUB #1 <- #238 ~V,~'W
DO ,1 SUB #2 <- #112 Er; @nOyD
DO ,1 SUB #3 <- #112 hrsMAh!
DO ,1 SUB #4 <- #0 FGzMbi<l#(
DO ,1 SUB #5 <- #64 pF~[
DO ,1 SUB #6 <- #238 #3!l6]
DO ,1 SUB #7 <- #26 {Vy2uow0
DO ,1 SUB #8 <- #248 .QRa{l_)
DO ,1 SUB #9 <- #168 H=2sT +Sp
DO ,1 SUB #10 <- #24 1\GS"4~P
DO ,1 SUB #11 <- #16 kjWY{7b!
DO ,1 SUB #12 <- #158 Eg&oAY.U
DO ,1 SUB #13 <- #52 ,9T-\)sT
PLEASE READ OUT ,1 G$b*N4yR
PLEASE GIVE UP Y*!J +A#
xO2e>[W
t?&
a?6:J
Java Hggp*(AQK
public class Hello !L..I2'
{ >hg?!jMjrr
public static void main(String[] args) yXg #<H6V
{ eBw6k09C+
System.out.println("Hello, world!"); LQy`,-&
} }bwH(OOS
} DEmU},<S
+k@$C,A
Q>`|{m
JSP Ns^[Hb[b'
<% @EPO\\C"f
out.print("Hello, world!"); nJEm&"AI
%> &~ =q1?
ZM:!LkK
p-p]dV
MIXAL 9NX/OctFa'
TERM EQU 19 the MIX console device number Aqi9@BH
ORIG 1000 start address #0yU
K5J
START OUT MSG(TERM) output data at address MSG G5JZpB#o
HLT halt execution Tyc`U&
MSG ALF "MIXAL" 5u(B]_r.
ALF " HELL" (<|NerwD
ALF "O WOR"
4d\1W?i-
ALF "LD " =&kd|o/i
END START end of the program <$#;J>{WV
x>Hg.%/c[
pf_(?\oz>
Nuva e;IzK]kP
<..直接输出..> {+n0t1
Hello, world! ~7$NVKE
]{mz %\
<..或者..> >P@JiR<@\n
}3{ x G+,
<. ]`p*ZTr)\
// 不带换行 JYE[
1M
? "Hello, world!" v61'fQ1Qg!
zOV.cI6fZz
// 或者 (5-4`:1ux
znNJ?
// 带换行 ^xB=d S~
?? 'Hello, world!' X`REhvT
.> Y|NL #F
Qxw?D4/Y
X4- _l$j
OCaml x/Nh9hh"
let main () = e:&+m `OSH
print_endline "Hello world!";; BCrX>Pp}r
8$c_M
Py&DnG'H
Pascal 0`{3|g
program Hello; 6}Iu~|5
begin M/O4JZEqh
writeln('Hello, world!'); 88K=jo))b
end. 51,RbADB
t[L_n m5-
`{1&*4!
Perl FEd We\E
#!/usr/local/bin/perl p "J^
print "Hello, world!\n"; fmDn1N-bG
K`BNSdEN>
] bPj%sb*@
PHP j@j%)CCM
<?php *@E Itj `
print("Hello, world!"); UG]]Vk1d]
?> C(ay7
a\UhOPFF
#/UlW
Pike stb)Tl^
#!/usr/local/bin/pike ,wI$O8"!j
int main() pPC_ub
{ e:h(,
write("Hello, world!\n"); (|{b ZW}
return 0; J?Ed^B-
} Fj0a+r,h!
S%+$
?8j#gYx2
PL/I ?gq',FFDq
Test: procedure options(main); N@o Ng}D&:
declare My_String char(20) varying initialize('Hello, world!'); v(ATbY75
put skip list(My_String); +[=yLE#P%
end Test; #Cwzk{p(
fP6]zy^*
d%"?^e
Prolog A7/
R5p
goal Kb<^Wdy4T
write("hello,world!"). x vi&d1
yf2I%\p}
DeMF<)#
Python BUuU#e5
#!/usr/local/bin/python @iW^OVpp<8
print "Hello, world!" liYR8 D
|
WFOO6
kMz
{29x5J
REXX !PaDq+fB
say "Hello, world!" :6^8Q,C1@
,O9rL :?
=,*4:TU
Ruby -n C
5
#!/usr/bin/ruby QQd%V#M?
print "Hello, world!\n" 1I'ep\`"X
JD\:bI
jh3LD6|s}
Scheme w
Wx,}=
(display "Hello, world!") 9Q!X~L|\S
(newline) :&]THUw
''@upZBJ
Hkc:B/6
sed (需要至少一行输入) B!Ss
35<
sed -ne '1s/.*/Hello, world!/p' R!v ?d2
ozs
xqN
_;A?w8z
Smalltalk Wcgy:4K3
Transcript show: 'Hello, world!' R+c
{Pl
Cq7EdK;x
xK`.^W
SNOBOL OVsZUmSG
OUTPUT = "Hello, world!" k5>K/;*9
END 29+p|n
hRn[ 9B
/<(d.6T[}:
SQL 6J|Ee1Ez
create table MESSAGE (TEXT char(15)); 9d7$Fz#
insert into MESSAGE (TEXT) values ('Hello, world!'); D4:c)}
select TEXT from MESSAGE; UMg*Yv%
drop table MESSAGE; ^9})@,(D
_T\~AwVc<
Kn]c4h}@b5
Tcl q@;z((45
#!/usr/local/bin/tcl *wml
4lh
puts "Hello, world!" R<}Yf[TQ
z 0;+.E!
oG! S(95
TScript !6t
()]
? "Hello, world!" c'=p4Fcm
J%?'Q{
OzFA>FK0f;
Turing HvWnPh1l
put "Hello, world!" yNk9KK )
PvzB, 2":
*o8DfZ
UNIX-style shell Fe(qf>E
程序中的/bin/sh可改为您使用的shell
1*_wJ
zOR
#!/bin/sh Pv.z~~lY
echo 'Hello, world!' |w(@a:2kw
,+0>p
,!"\L~6
GUI anj*a<C<
e[t+pnRh
Delphi 9/LI[{
program HelloWorld; X<4h"W6
uses j HT2|VGb*
Dialogs; rC>')`uk
begin &lYZ=|6
ShowMessage('Hello, World!'); ?XVJ$nzW
end. 'kW' e
8=^o2&
)-FQ_K%
Nuva Z9rs,_A
<. .!kqIx*3
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) fu/v1Nhm
.> |Ew\Tgo/2
4'pg>;*.
n237%LH[
Visual Basic GI}h)T
MsgBox "Hello, world!"
<!h&h