“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。 #K5)Rb-H
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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》。 #-0}r
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以下是用不同语言写成的Hello World程序的几个例子: aMxg6\8
Ada Q1?0R<jOU
with Ada.Text_Io; use Ada.Text_Io; k4:e0Wd
procedure Hello is 'mH9O
begin h7}D//~p
Put_Line ("Hello, world!"); aBH!K
end Hello; &at^~o
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汇编语言 :#?Z)oQpT
z/B[quSio
x86 CPU,DOS,TASM aQMUC6cPM@
MODEL SMALL K!JXsdHK
IDEAL ?gp:uxq,.
STACK 100H vy
<(1\
<3[,bTIk
DATASEG Y[hTO.LF
HW DB 'Hello, world!$' yBd#*3K1
) r8yt}
CODESEG 8>}k5Qu
MOV AX, @data IfK%i/J
MOV DS, AX d3$*z)12`
MOV DX, OFFSET HW W+F^(SC\
MOV AH, 09H O%1X[
INT 21H eQiK\iDS
MOV AX, 4C00H IfeCSK,x
INT 21H Gk!06
END 69z,_p$@:
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~^&]8~m*d
x86 CPU,GNU/Linux,NASM deRnP$u0
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). cZd9A(1"^
;Enter this into "hello.asm" then type: b,Z\{M:f;F
;"nasm -f elf hello.asm" Kzj9!'0R
;"ld hello.o -o hello" lK}W%hzU
;"./hello" Z{9
mZlIy
(?G?9M#7_
section .data ;data section declaration -3z$~
{
msg db 'Hello World!',0AH ,)S(SnCF
len equ $-msg ;string length Kx-s95t
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section .text ;code section declaration _{eH"
,(
global _start ;entry point (start of execution) >uu]K
_start: mov edx,len ;string length z A ~aiX
mov ecx,msg ;string start Wfw6(L
mov ebx,1 ;file handle: stdout {Q%"{h']
mov eax,4 ;sys_write 8lI'[Y?3.
int 80h ;kernel system call 3gUGfedi
BIBBp=+
mov ebx,0 ;return value }m`+E+T4
mov eax,1 ;sys_exit $CgJ+ua\8
int 80h ;kernel system call /nbHin#we
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9kpCn.rJ
x86 CPU,Windows,MASM32 'aW}&!H M
.386 6lp.0B
.model flat,stdcall qu}&4_`%:V
option casemap:none 4
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;Include 文件定义 3 NLC~CJ
include windows.inc W)RCo}f
include user32.inc G2
includelib user32.lib >ZE8EL
include kernel32.inc k*?Axk#
includelib kernel32.lib ?`,Rkg0fe
;数据段 >+9f{FP
9
.data Tlz $LI
szCaption db 'A MessageBox!',0 $aY*1UVq
szText db 'Hello,world!',0 &
V*_\
;代码段 +d$l1j
.code myR}~Cj;q
start: K&\3j-8^
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK yV'<l
.N
invoke ExitProcess,NULL hC nqe
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> lZt{L0
end start Y$@?Y/rhR
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&s+F+8"P+
AWK B{In
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BEGIN { print "Hello, world!" } 7QO QG:-
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BASIC @CxXkR
传统版BASIC(例如GWBASIC): e5"?ol0
^Hdru]A$2
10 PRINT "Hello, world!" JdP[
cN
20 END zFR=inI
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或在提示符输入: 5D~>Ed;
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?"Hello, world!":END ~ sC< V
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现代版BASIC(例如Quick BASIC): M)<4|x
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Print "Hello, world!" 4!I;U>b b
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以下的语句在Quick BASIC中同样有效: S~Z`?qHWh
jRCf!RO
? "Hello,world!" tH}$j
8|*=p4_fn
!,I530eh7
BCPL aDae0$lc.S
GET "LIBHDR" 2E*k@
GWQ_X9+q
LET START () BE ftw@ nQNU
$( #?V7kds]
WRITES ("Hello, world!*N") `H^?jX>7
$) -kv'C6gB
B!z-O*fLE1
)=PmHUd
Befunge 5@:c6(5$
"!dlrow olleH">v {eQ')f
, R3[H#*gF<
^_@ AzfYw'^&9
Uc?4!{$X
JyfWy
Brainfuck Xyf7sHQ
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< RH"&B`
+++++++++++++++.>.+++.------.--------.>+.>. .;:jGe(
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C |.q K69
#include <stdio.h> :.K#=ROP
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int main(void) knPo"GQW
{ :We}l;.jQ
printf("Hello, world!\n"); lwhVP$q}
return 0; Z,? T`[4B
} 6pKb!JJ
!R`)S7!
w|;kL{(W
C++ S>'S4MJE`
#include <iostream> _kJ?mTk
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int main() DH5]Kzb/
{ jDaWmy<ha
std::cout << "Hello, world!" << std::endl; Za&.sg3RG
return 0; 3 E~d
} jW?siQO^
L'*P;z7<
=N+Ou5D
C++/CLI H=f'nm]dQ
int main() }EW@/; kC
{ %U4w@jp
System::Console::WriteLine("Hello, world!"); ,z*-93H1
} ub#>kCL9
il)LkZ@
] VN4;R
C# (C Sharp) LvtZZX6!
class HelloWorldApp nmc5c/C|-I
{ pO;BX5(x
public static void Main() c<(LXf+61
{ )/:r$n7
System.Console.WriteLine("Hello, world!"); XHN`f#(w
} w(y#{!%+
} =36e&z-#
upJ|`,G{
:N3'$M"
COBOL gm-m_cB<
IDENTIFICATION DIVISION. K)h\X~s
PROGRAM-ID. HELLO-WORLD. wl*"Vagb
$oJ)W@>
ENVIRONMENT DIVISION. [CfA\-gx<f
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DATA DIVISION. * MJl(
@k ~_ w#
PROCEDURE DIVISION. }iK_7g`yKa
DISPLAY "Hello, world!". pxF<L\L?:
STOP RUN.
E8:4Z$|c
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N1O& fMz
Common Lisp jv"^_1
(format t "Hello world!~%") V&'
:S{i
=Wl*.%1 b
SSS)bv8m
DOS批处理 Fe4QWB6\U
@echo off >/kwy2
echo "Hello, world!" ice7J2r_
&|:T+LVv$+
CD]2a@j{
Eiffel (,J`!Y hS
class HELLO_WORLD aWLeyXsAu
WF6'mg^^?
creation 'm;M+:l
6
make G isI/Ir[
feature /R_*u4}iD
make is s1[_Pk;!
local B>^5h?(lt
io:BASIC_IO +UK".
do )A`Zgg'L7D
!!io ]Tje6iF
io.put_string("%N Hello, world!") NjTVinz
end -- make sH^?v0^a
end -- class HELLO_WORLD
`q ;79t
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A0NNB%4|/
Erlang tGKIJ`w*h
-module(hello). &zCqF=/9U
-export([hello_world/0]). 4b" %171
C~2/ 5
hello_world() -> io:fwrite("Hello, World!\n"). [":[\D'
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R|Oy/RGY$
Forth (okCZ-_Jn
." Hello, world!" CR MuQBn7F{c
E0 nR Vg
8Ee bWs*1
Fortran 6zQ {Y"0
WRITE(*,10) A%VBBvk
10 FORMAT('Hello, World!') ;x[F4d
STOP bb6
~H
END ;|2h&8yX(/
sP0pw]!
s[yIvlHw`
HTML u@`)u#
<HTML> mGQgy[gX
<HEAD> N.J;/!%!
<TITLE> Hello World! </TITLE> Tl#Jf3XY}
</HEAD> I5"ew=x#
<BODY> M y:9
<p>Hello World!</p> CS 7"mE`{
</BODY> s*g yk
</HTML> Dm@wTt8N(
XUD/\MoV
Y$^x.^dT,
HQ9+ s$Il;
H {__Z\D2I
1}E`K#
JJnZbJti
INTERCAL SL;\S74
PLEASE DO ,1 <- #13 Z=O 2tR
DO ,1 SUB #1 <- #238 7Q<uk[d0
DO ,1 SUB #2 <- #112 +uF!.!}
DO ,1 SUB #3 <- #112 L3Leb%,!
DO ,1 SUB #4 <- #0 8gap _qTo
DO ,1 SUB #5 <- #64 %6`{KT?
DO ,1 SUB #6 <- #238 nL}bCX{
DO ,1 SUB #7 <- #26 k'N `5M)
DO ,1 SUB #8 <- #248 U!F~><
DO ,1 SUB #9 <- #168 b$sw`Rsw
DO ,1 SUB #10 <- #24 )x.}B4z
DO ,1 SUB #11 <- #16 k_9tz}Z
DO ,1 SUB #12 <- #158 p[(VhbN
DO ,1 SUB #13 <- #52 Ejdw"P"
PLEASE READ OUT ,1 >G2o
PLEASE GIVE UP rK*s/mX <
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Java ]JX0:'x^
public class Hello TEZ^Ia
{ o~
.[sn5l-
public static void main(String[] args) W{Cc wq
{ Kp*nOZ
System.out.println("Hello, world!"); (o_fY.
} %/dYSC
} .>0e?A4,5?
"(}xIsy
y2V9!
JSP [y
y D-
<% Vw*;xek?
out.print("Hello, world!"); -OpI,qyS
%> Z*d8b
40pGu
^e$;I8l
MIXAL AElx #`T
TERM EQU 19 the MIX console device number [L1pDICoy
ORIG 1000 start address ?JTy+V2t
START OUT MSG(TERM) output data at address MSG /"?y @;Y~
HLT halt execution |U?5%
L
MSG ALF "MIXAL" yhe$A<Rl=
ALF " HELL" .~V0>r~my
ALF "O WOR" :X[(ymWNE
ALF "LD " 8uoFV=bj\
END START end of the program b
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Nuva >_U)=q
<..直接输出..> GzK{.xf
Hello, world! aG?ko*A;
SoODss~X
<..或者..> QP|Ou*Qm)
=+q9R`!L]
<. BVxg=7%St
// 不带换行 }cyHR1K
? "Hello, world!" #Nxk3He]8
Q7$ILW-S
// 或者 N<+
><>9
%4U;Rdq&Ud
// 带换行 vm)&