“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。 a))*F!}c
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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》。 g1V)$s7
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以下是用不同语言写成的Hello World程序的几个例子: $G3@< BIN
Ada -u~eZ?(!Ye
with Ada.Text_Io; use Ada.Text_Io; ]l&'k23~p
procedure Hello is -tyaE
begin qZbHMTnT6
Put_Line ("Hello, world!"); 1b[NgOXY=
end Hello; r|-J8s#
e &Rb
vgAFuQi(
汇编语言 :mp$\=
tJm{I)G
x86 CPU,DOS,TASM 4)nt$fW
MODEL SMALL }`]]b+_b>@
IDEAL ,`)OEI|1d
STACK 100H [q"NU&SX
,qu:<
DATASEG 7@a\* |K6
HW DB 'Hello, world!$' H:MUNc8i
mATH*[Y
CODESEG I>hmbBlDv
MOV AX, @data UR,?! rJ^B
MOV DS, AX 3):?ZCw7y
MOV DX, OFFSET HW 8!4[#y<
MOV AH, 09H 5L3{w+V
INT 21H hgwn> p:S#
MOV AX, 4C00H W0?JVtq0Z
INT 21H |0]YA
END +C5#$5];
D 2$^"
WKOI\
x86 CPU,GNU/Linux,NASM c/RT0xql*
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). eA&t%
;Enter this into "hello.asm" then type: z}3di5+P
;"nasm -f elf hello.asm" ^XNw$@&',
;"ld hello.o -o hello" -;ER`Jqs,
;"./hello" 9C=~1>S
b~9`]+
section .data ;data section declaration ]_\AHnJ
msg db 'Hello World!',0AH Rdj8*f
len equ $-msg ;string length ydyG}XI7V
Rv,Mu3\~#c
section .text ;code section declaration PY\W
global _start ;entry point (start of execution) (gDQ\t@3-
_start: mov edx,len ;string length BjB&[5?z
mov ecx,msg ;string start $':JI#
mov ebx,1 ;file handle: stdout 6"%@L{UQ
mov eax,4 ;sys_write H7}g!n?
int 80h ;kernel system call T?#s'd
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gZS
mov ebx,0 ;return value hd8B0eD'
mov eax,1 ;sys_exit '9"%@AFxZ
int 80h ;kernel system call V07VwVD
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P*7S3Td
x86 CPU,Windows,MASM32 M$F{N
.386 G"{4'LlA
.model flat,stdcall G LoiH#R
option casemap:none HmW=t}!
;Include 文件定义 i`R(7Z
include windows.inc ovB=Zm
include user32.inc 6-ti Rk~
includelib user32.lib WqR7uiCi
include kernel32.inc ygMd$0:MN
includelib kernel32.lib jmSt?M0.xV
;数据段 ?P%|P
.data )=y.^@UT@
szCaption db 'A MessageBox!',0 r1+c/;TpZ
szText db 'Hello,world!',0 b'&LBT7
;代码段 ^u3*hl}YKy
.code Qg[heND
start: 8>ESD}(
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK d3og?{i<}&
invoke ExitProcess,NULL zf`5>h|
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Z>X9J(=
end start uW )
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v: giZxR
!;TR2Zcn
AWK zaH
5
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BEGIN { print "Hello, world!" } :,jPNuOA
9U&~(;
3\,MsoAl
BASIC ~KJ,SLzhx9
传统版BASIC(例如GWBASIC): j,\tejl1
EN)YoVk
10 PRINT "Hello, world!" mlD%d!.
20 END $|rCrak;
qI(W$
或在提示符输入: "pOqd8>]
=sxkr ih
?"Hello, world!":END 92s4u3L;
2XzF k_6H
现代版BASIC(例如Quick BASIC): cLn; ,u4
rFf:A-#l
Print "Hello, world!" W&HF?w}s
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以下的语句在Quick BASIC中同样有效: a:=q8Qy
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? "Hello,world!" "(Mvl1^BT
7We?P,A\;
, - QR
BCPL :8](&B68gE
GET "LIBHDR" Y=AH%Gy9)
P;^y|0Nm
LET START () BE
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$( J>><o:~@
WRITES ("Hello, world!*N") Q1aHIc
$) eLCdAr
)C'G2RV
j kSc&
Befunge ~C%2t{"
"!dlrow olleH">v P]|J?$1K
, 2b; rr
^_@ KDux$V4
<]Ij(+J;
h=uiC&B
Brainfuck D."cQ<sxpN
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< D-'i G%)kA
+++++++++++++++.>.+++.------.--------.>+.>. Hlz'a1\:O]
Q&oC]u(="&
Ask' !
C H+S~ bzz
#include <stdio.h> ;n%]*v
5LDQ^n
int main(void) pWWL{@ J
{ }wvwZ`5t
printf("Hello, world!\n"); 4JX`>a{<
return 0; vF5wA-3&t
} :iP>z}h
Xjs21-t%
OpW eW
C++ W,QnU d'N
#include <iostream> `,F&y{A
CQ@#::'F1
int main() B'WCN&N
{ 5*s1qA0^
std::cout << "Hello, world!" << std::endl; >2l13^Y
return 0; bYwI==3
} \>*MMe
oUW)H
Ss"|1]acP
C++/CLI zWCW: dI
int main() +-Z"H)
{ >P6^k!R1y
System::Console::WriteLine("Hello, world!"); c!'A)JD@
} Y9IJ
mF6@Y[/B
_&k'j)rg
C# (C Sharp) U^E
class HelloWorldApp Bo\a
{ =:xV(GK}
public static void Main() }m=tzHB*
{ #~bU}[{
System.Console.WriteLine("Hello, world!"); EIq{C-(
} ?$"x^=te7
} b
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}aHB$}"!
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COBOL )0Y #-=.<
IDENTIFICATION DIVISION. TTA{#[=7
PROGRAM-ID. HELLO-WORLD. nZ2mEt
F]K$u<U
ENVIRONMENT DIVISION. o1 hdO
w%i+>\tO
DATA DIVISION. I2t-D1X
Nt`F0
9S
PROCEDURE DIVISION. ,(@Y%UW:
DISPLAY "Hello, world!". _/QKWk&j
STOP RUN. N3XVT{yo
n}AR/3}
GsP@ B'
Common Lisp OBKC$e6I
(format t "Hello world!~%") vxbH^b
}<5\O*kX4
4*N@=v
DOS批处理 [3{:H"t
@echo off M(.uu`B
echo "Hello, world!" h@PMCmf_
#K<=xP
uZqu xu.
Eiffel qHC*$v#.V?
class HELLO_WORLD SHXa{-
0,vj,ic*WX
creation :|3"H&FWK
make C1#o<pv
feature t?%}hs\!
make is ;3.T* ?|o
local >+A1 V[
io:BASIC_IO +,vJ7
do F?RCaj
!!io k$$S!qi#
io.put_string("%N Hello, world!") ;*>QG6Fh
end -- make J]=aI>Ow
end -- class HELLO_WORLD l(krUv
?j&~vy= T
!~|"LA!jn
Erlang ySr091Q
-module(hello). ~$y#(YbH
-export([hello_world/0]). ${TB2q}%
#cp$ltY
hello_world() -> io:fwrite("Hello, World!\n"). ;4S
[ba1/
?v )"%.
$X.'W\o|
Forth hIzPy3
." Hello, world!" CR %~B)~|h
\0*yxSg,^
>PTu*6Z
Fortran
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WRITE(*,10) WoClTb>F
10 FORMAT('Hello, World!') -Iruua7b
STOP 8CnvvMf
END 2t]! {L
mTXNHvv
\DcC1W
HTML ys.!S.k+
<HTML> :nbW.B3GV
<HEAD> $E4O^0%/p
<TITLE> Hello World! </TITLE> X('Q;^`
</HEAD> `3>)BV<P
<BODY> L!+[]tB
<p>Hello World!</p> )K\k6HC.
</BODY> 6&OonYsP
</HTML> WrK^>
eLt Cxe
tI!R5q;k
HQ9+ ^Lg{2hjj
H P :7l#/x_
!Lg}q!*%>V
w=P<4bdT
INTERCAL {6=H/g=:i
PLEASE DO ,1 <- #13 MeK\eZ\
DO ,1 SUB #1 <- #238 9/X v&<Tn
DO ,1 SUB #2 <- #112 fbx;-He!
DO ,1 SUB #3 <- #112 +}G>M=t::
DO ,1 SUB #4 <- #0 k. ?
T.9
DO ,1 SUB #5 <- #64
8tFyNl`c
DO ,1 SUB #6 <- #238 d~z<,_r5c
DO ,1 SUB #7 <- #26 7z P
DO ,1 SUB #8 <- #248 /xrq'|r?C
DO ,1 SUB #9 <- #168 /J9T=N
DO ,1 SUB #10 <- #24 "` ?Wu
DO ,1 SUB #11 <- #16 rfZj8R&
DO ,1 SUB #12 <- #158 ?w5nKpG#RI
DO ,1 SUB #13 <- #52 )H37a
PLEASE READ OUT ,1 .}hZ7>4-
PLEASE GIVE UP tpx3:|
1Sc~Vb|>
.+JPtL
Java xz+`]Q
public class Hello O,xAu}6f+
{ $85o%siS'
public static void main(String[] args) YT 03>!B
{ ##+8GLQM
System.out.println("Hello, world!"); }yC,uEV
} ,w58n%)H
} kV(DnZ#jq
I#6'
NZ
oWaIjU0
JSP HS&uQc a
<% uF.\dY\xv
out.print("Hello, world!"); r0$9c
%> T I7Ty+s
/qQ2@k
]#7Y@Yo
MIXAL 4[EO[x4C
TERM EQU 19 the MIX console device number v%8-Al^G
ORIG 1000 start address ;0X|*w1JO
START OUT MSG(TERM) output data at address MSG `zsk*W1GA
HLT halt execution \3Ald.EqtM
MSG ALF "MIXAL" @XG`D>%k
ALF " HELL" +sbacMfq
ALF "O WOR" [;LPeO
ALF "LD " [Oy2&C
END START end of the program <!HDtN
b+j_EA_b
N4]6LA6x6
Nuva [N$_@[
<..直接输出..> jvKaxB;e
Hello, world! .j<B5/+
Hr,lA(
<..或者..> ZxeE6M^w
?bYQZJ>&
<. gl\{QcI8<
// 不带换行 d=OO(sf
? "Hello, world!" IEsD=
e=Tc(Mwn
// 或者 Qc<O; #
Pg8=
// 带换行 8}`8lOE7
?? 'Hello, world!' -Aym+N9
.> 8JO\%DFJ
|/Q. "d
6o23#JgN
OCaml <W|{)U?p
let main () = iwTBE]J
print_endline "Hello world!";; Glc4g
\hD
bv5
D~?*Xv]s~
Pascal `e;Sjf<
program Hello; /@}# KP=
begin 0YRYCO$
writeln('Hello, world!'); v&,VC~RN-J
end. ]T$w7puaJ
QMpA~x_m
(eIxU&o'
Perl Y0C<b*!"ST
#!/usr/local/bin/perl N<r0I-
print "Hello, world!\n"; X10TZ
<