“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。 @?($j)9}
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 `b,g2XA
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以下是用不同语言写成的Hello World程序的几个例子: 8mQd*GGu1
Ada m SvTnd8
with Ada.Text_Io; use Ada.Text_Io; nG(|7x
procedure Hello is Xb07 l3UG
begin s$=B~l
Put_Line ("Hello, world!");
fjeE.
end Hello; E rRMiT
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X#\P.$
汇编语言 0^tJX1L
I?xhak1)lu
x86 CPU,DOS,TASM ^LAS9K1.
MODEL SMALL &opH\wa
IDEAL Yh!\:9@(
STACK 100H ;-P:$zw9c
M. UUA?d<'
DATASEG vA $BBXX
HW DB 'Hello, world!$' D\i8rqU/l
jind!@}!
CODESEG ,hcBiL/
MOV AX, @data
61 HqBa
MOV DS, AX q?b)zeJ
MOV DX, OFFSET HW QH56tQq
MOV AH, 09H VE+p&0
INT 21H xdSj+507
MOV AX, 4C00H iOA3x 8J
INT 21H v+,
w{~7RH
END A_dYN?^?|
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OTr!?xi
x86 CPU,GNU/Linux,NASM 085 ^!AZ
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). m~\m"zJ4
;Enter this into "hello.asm" then type: Uu<sntyv
;"nasm -f elf hello.asm" Pp" )hFx
;"ld hello.o -o hello" Szob_IEq,
;"./hello" SZ1pf#w!
_[6+FdS],
section .data ;data section declaration FV<^q|K/(]
msg db 'Hello World!',0AH l[OQo|_
len equ $-msg ;string length )I1V2k$n
m+JGe5fR<
section .text ;code section declaration :y)&kJpleP
global _start ;entry point (start of execution) tLGwF3e$A
_start: mov edx,len ;string length 75cr!+
mov ecx,msg ;string start vmQ
DcCw
mov ebx,1 ;file handle: stdout Ymh2qGcj]8
mov eax,4 ;sys_write UHm+5%ZC
int 80h ;kernel system call L&F\"q9q71
;@$, "
P
mov ebx,0 ;return value nHL>}Yg
mov eax,1 ;sys_exit pl? J<48
int 80h ;kernel system call
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x86 CPU,Windows,MASM32 xo@/k
.386 {hp@j#
.model flat,stdcall S+=@d\S}"
option casemap:none D"><S<C\C
;Include 文件定义 w2_I/s6B
include windows.inc >5Rw~
include user32.inc Bk(XJAjY
includelib user32.lib dXy"yQ>{
include kernel32.inc &ppZRdq]
includelib kernel32.lib Pn){xfqDl
;数据段 0Nzv@g{3
.data o ML
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szCaption db 'A MessageBox!',0 CMB$RLf
szText db 'Hello,world!',0 hQrsZv:Q
;代码段 ]0nC;|]@Lx
.code H5rNLfw
'
start: +R jD\6bJb
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 6O?S r,
invoke ExitProcess,NULL UEb'E;
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> L
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end start j;c^pLUP
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I.0Usa"z
AWK ;C@^wI
BEGIN { print "Hello, world!" } .ceU @^
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jT_Tx\k
BASIC yru}f;1
传统版BASIC(例如GWBASIC): n!,TBCNX
'
=s*DL`0
10 PRINT "Hello, world!" [UrS%]OSR
20 END :'Kx?Es
IOsDVIXL\
或在提示符输入: t,Rn
Nd!=3W5?
?"Hello, world!":END ;-w PXXR
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现代版BASIC(例如Quick BASIC): (4gQe6tA
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Print "Hello, world!" C F 0IP
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以下的语句在Quick BASIC中同样有效: hndRgCo
#8HXR3L5=!
? "Hello,world!" gG?*Fi
?v*7!2;
4C*=8oe_
BCPL nqW:P$
GET "LIBHDR" im%3*bv-
2n,73$s
LET START () BE 833t0Ml1A/
$( mqxy(zS]
WRITES ("Hello, world!*N") W-B[_
$) Fi}rv[`XY[
yM ~D.D3H
!!pi\J?sk
Befunge gDBQ\vM8
"!dlrow olleH">v > %*X2'^
, Qi L
^_@ tXuxTVhoT
Q(Y,p`>
+VFwYdW,
Brainfuck pIjVJ9+j
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< meWq9:z
+++++++++++++++.>.+++.------.--------.>+.>. dQ"W~ig
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lt"*y.%@b
C [l{eJ/W
#include <stdio.h> fN>|X\-
C\h<02
int main(void) )}lV41u
{ Gi2Ey37]O
printf("Hello, world!\n"); O/~^}8TLL
return 0; =&xoyF
} <08 V-
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S,>n'r[
C++ ''YjeX
#include <iostream> (!=aRC.-
-JQg{A
int main() +Enff0 =+
{ Bbp9Q,4
std::cout << "Hello, world!" << std::endl; bS"M*
return 0; _QCI<|A
} K Hc +
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QQcj"s
C++/CLI 2geC3v% 0o
int main() DgP%Q
{ 9jO+ew
System::Console::WriteLine("Hello, world!"); U$Z}<8
} oa7Hx<Y
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uwzT? C A6
C# (C Sharp) K>6p5*&
class HelloWorldApp SW,Po>Y
{ a^,RbV/
public static void Main() }A^,y
{ P
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System.Console.WriteLine("Hello, world!"); |0mI3r
} _J!mhUA
} (iP,YKG1?
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K@lV P!z
COBOL JR)rp3o-
IDENTIFICATION DIVISION. Uc2#so$9
PROGRAM-ID. HELLO-WORLD. B.jYU
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ENVIRONMENT DIVISION. 'h=2_%l@Y
RMXj)~4.
DATA DIVISION. b5R*]
Y6a|\K|
PROCEDURE DIVISION. Zv93cv
DISPLAY "Hello, world!". TQH#sx
STOP RUN. B8Z66#EQ
}lVUa{ubf
E(#2/E6
Common Lisp h='=uj8o5
(format t "Hello world!~%") N R{:4zJT
4r&~=up]
'~0&m]N
DOS批处理 W
aU_Z/{0
@echo off ;;5i'h~?]J
echo "Hello, world!" \eCdGx?
AJu.
A\Gw+l<h,
Eiffel RwWQ$Eb_s
class HELLO_WORLD lla96\R
"
cg>g/
creation <ZEA&:p
make AtI,&S#{
feature WTx;,TNG
make is L8Q!6oO=<
local Y`uCDfcQ
io:BASIC_IO (Bz(KyD[
do ).xWjVC
!!io 3}+
\&[
io.put_string("%N Hello, world!") S{6u\Vy
end -- make '-=?lyKv
end -- class HELLO_WORLD I4'j_X
t
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r^)<Jy0|r
Erlang v]~[~\|a
-module(hello). [qB=OxH?
-export([hello_world/0]). ^(R
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om6R/K
hello_world() -> io:fwrite("Hello, World!\n"). , fn=%tiUk
2_Z60]
RU=%yk-gM
Forth &3V4~L1aEg
." Hello, world!" CR g,nE iL
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Fortran 6%-2G@6d
WRITE(*,10) ,")7uMZaF\
10 FORMAT('Hello, World!') g=Lt2UIJ
STOP ]Ea-?IhD
END {YFru6$
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HTML uY,FugWbl
<HTML> x/~M=][tN
<HEAD> 3-'|hb
<TITLE> Hello World! </TITLE> gK /K Z8
</HEAD> 4)_ [)MZ\j
<BODY> OuoZd!"qf
<p>Hello World!</p> $)3/N&GXR
</BODY> {+;8dtZ)x
</HTML> l}x{.q7Ul
tR3hbL$W
a$
}^z
HQ9+ UWHC]V?
H Hg4Ut/0
@)B_e*6>'
"<n{/x(
INTERCAL DWAU8>c+
PLEASE DO ,1 <- #13 @,]v'l!u
DO ,1 SUB #1 <- #238 <IYt*vlm
DO ,1 SUB #2 <- #112 4.8,&{w<m
DO ,1 SUB #3 <- #112 0^=S:~G
DO ,1 SUB #4 <- #0 #qWEyb2UZ
DO ,1 SUB #5 <- #64 0:*$i(2
DO ,1 SUB #6 <- #238 n2E2V<#
DO ,1 SUB #7 <- #26 hf[K\aAk
DO ,1 SUB #8 <- #248 S`::f(e
DO ,1 SUB #9 <- #168 KGIz)/eSg
DO ,1 SUB #10 <- #24 (\j<`"n
DO ,1 SUB #11 <- #16 $aG'.0HW
DO ,1 SUB #12 <- #158 ]#nAld1cmy
DO ,1 SUB #13 <- #52 <FP-]R)
PLEASE READ OUT ,1 Xp'KQ1w)
PLEASE GIVE UP {R K#W~h
rTH@PDk>)
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Java bWqGypq4
public class Hello QO8/?^d
{ ]@xc9tlG
public static void main(String[] args) +=R:n^r^,
{ ?NL2|8
System.out.println("Hello, world!"); \vI_%su1N
} |l9AgwDg
} %UmE=V
bnlL-]]9z
R~`Y6>o~9:
JSP gVGq
<% G 6][@q
out.print("Hello, world!"); z#y<QH
%> -I -wdyDr
-$7Jc=:>
/<mc~S7
MIXAL \sk,3b-&'
TERM EQU 19 the MIX console device number [-l^,,E
ORIG 1000 start address Uc4r
START OUT MSG(TERM) output data at address MSG J(Bn
n
HLT halt execution '&"7(8E}
*
MSG ALF "MIXAL" V#=N?p
ALF " HELL" \R~Lf+q
ALF "O WOR" \1tce`+
ALF "LD " nP}/#Wy
END START end of the program |aZ^K\yI F
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/:S.("Unv
Nuva eA!aUu
<..直接输出..> (k[<>$hL*
Hello, world! 3}"VUS0wh
<Sz9: hg-
<..或者..> Ss8`;>
A3Su&0uaB
<. 9(m^^
// 不带换行 &?~> I[^~
? "Hello, world!" -/h$Yb
, 7}Ri
// 或者 4F'@yi^Gt
>6@UjGj54
// 带换行 b&LhydaJ
?? 'Hello, world!' =/zQJzN
.> R)#"Ab Z'
_8bqk\m+
P?bdjU#_n`
OCaml 5f1yszd
let main () = zP5H TEz
print_endline "Hello world!";; rIu>JyC"p
\\[P^ tsF
Ar|_UV>Zf
Pascal Wjj'yqBO^
program Hello; }b1P!xb!A
begin $Q?UyEi
writeln('Hello, world!'); Lg'z%pi
end. z8gp<5=
n.XT-X^
poM VB{U
Perl _N<8!(|w
#!/usr/local/bin/perl Z
rvb
%
print "Hello, world!\n"; P/^:IfuR
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r>
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PHP 0n5N-b?G-@
<?php `AYHCn
print("Hello, world!"); S:Hg
=|R
?> 9X!OQxmg
J H6\;G6
P,,@&*
:
Pike d=q2Or
#!/usr/local/bin/pike 6Z7{|B5}Y
int main() :g][99
{ 0Tq6\:
write("Hello, world!\n"); 3Y>!e#
return 0; lx%<oC+M
} d
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*`|F?wF
XWK A0
PL/I 1,Y-_e)
Test: procedure options(main); n`}vcVL;
declare My_String char(20) varying initialize('Hello, world!'); kGCd!$fsk
put skip list(My_String); hMi`n6m
end Test; ^ng?+X>mP
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q4Q1Ib-<2
Prolog /I="+
goal B1 'Ds
write("hello,world!"). BsRxD9r
`NrxoU=
]Rz]"JZ\S
Python $dq
R]'
#!/usr/local/bin/python e3&R3{
print "Hello, world!" {5:y,=Y
Qb/qUUQO;0
U ^[<G6<9]
REXX 7?e*b(vd
say "Hello, world!" q0$}MB6
Xn4U!<RT"
}VdohX-
Ruby jeC3}BL}
#!/usr/bin/ruby DjtUX>e
print "Hello, world!\n" 1Qv5m^>vj
]r{y+g|
Q
R;Xj3]v
Scheme
"Qm
(display "Hello, world!") e5C560
(newline) }>>BKn
V{ECDgP
a*!wiTGf
sed (需要至少一行输入) GVe[)R
sed -ne '1s/.*/Hello, world!/p' *RivZ
c9;P
E\ 5t&jZr
!Mceg
Smalltalk fC52nK&T8
Transcript show: 'Hello, world!' 3
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