“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。 + Z7 L&BI
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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》。 9_h
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以下是用不同语言写成的Hello World程序的几个例子: IzuYkl}
Ada 8(6(,WwP}
with Ada.Text_Io; use Ada.Text_Io; <WHu</
procedure Hello is A>?_\<Gp
begin j5rB+
Put_Line ("Hello, world!"); am'11a@*
end Hello; TbUouoc
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汇编语言 *&=sL
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x86 CPU,DOS,TASM k
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MODEL SMALL [1LlzCAFBw
IDEAL pM|m*k
STACK 100H RjcU0$Hi
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DATASEG DV8b<)
HW DB 'Hello, world!$' +2KYtyI
Ao0p=@Y
CODESEG ~$WBc qo
MOV AX, @data cbton<r~
MOV DS, AX ?ufX3yia
MOV DX, OFFSET HW !Lu noC>B
MOV AH, 09H +E7Os|m
INT 21H nT;Rwz$3
MOV AX, 4C00H +.EP_2f9
INT 21H Az`c ?
W%
END UdiogXZ
,:E*Mw:
\~(scz$
x86 CPU,GNU/Linux,NASM mSg{0_:
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). }Ai_peO0a
;Enter this into "hello.asm" then type: T"b'T>Y
;"nasm -f elf hello.asm" M MQ^&!H
;"ld hello.o -o hello" BidTrO
;"./hello" MXsCm(
mBrH`!
section .data ;data section declaration @U 6jd4?)
msg db 'Hello World!',0AH +sW;p?K7eO
len equ $-msg ;string length 5Al1u|;HB
N4xCZb
section .text ;code section declaration 1@i|[dq
global _start ;entry point (start of execution) `<"@&N^d
_start: mov edx,len ;string length YUGEGXw
mov ecx,msg ;string start H,{WrWA
mov ebx,1 ;file handle: stdout (/^s?`1{N?
mov eax,4 ;sys_write ?f8)_t}^\
int 80h ;kernel system call =^9I)JW
~OE1Sd:2
mov ebx,0 ;return value k(]R;`f$W
mov eax,1 ;sys_exit wDv G5
int 80h ;kernel system call pz hPEp;
kA"|PtrW
j@Ta\a-,x
x86 CPU,Windows,MASM32 Vq IzDs
.386
}x9D;%)/
.model flat,stdcall ^5GyW`a}
option casemap:none )Z=S'm
k4_
;Include 文件定义 7eR%zNDa
include windows.inc q;)+O#CR
include user32.inc pnpx`u;
includelib user32.lib 4#D<#!]^
include kernel32.inc 7~ I*u6zY
includelib kernel32.lib t/k MV6
;数据段 }Z,x F`
.data 0p31C7!
szCaption db 'A MessageBox!',0 e!B>M{
szText db 'Hello,world!',0 ^E#i5d+'N
;代码段 .XVW2ISv
.code *B3 4
start: ,u<oAI`
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK gB)Cmw*
invoke ExitProcess,NULL k vQ]
}`a
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> V#P`FX
end start eVetG,["
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AWK 7:S4 Ur
BEGIN { print "Hello, world!" } %FhUjHm
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BASIC %`# HGji)
传统版BASIC(例如GWBASIC): ]Uu :t
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10 PRINT "Hello, world!" i[#XYX'\
20 END &*nq.l76X`
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或在提示符输入: }I3m8A
; "K"S[
?"Hello, world!":END sq45fRAi
"|^-Yk\U
现代版BASIC(例如Quick BASIC): xCYK"v6\
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Print "Hello, world!" _wp_y-"
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以下的语句在Quick BASIC中同样有效: TZ+- >CG
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? "Hello,world!" (~
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!zZ3F|+HB
BCPL 8 t5o&8v
GET "LIBHDR" -FGM>~x
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LET START () BE C)?tf[!_6
$( g@ 2f&m
WRITES ("Hello, world!*N") M->BV9
$) c2RQwtN|
@j`gxM_-O
dI?x(vw
Befunge =3dR-3
"!dlrow olleH">v *w`_(Xf
, s|[CvjL#0
^_@ w\zNn4B})A
+/n<]?(T
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Brainfuck EGysA{o"X
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< EpU}~vC9C
+++++++++++++++.>.+++.------.--------.>+.>. [e f&|Pi-
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cfC}"As
C + usB$=kJ
#include <stdio.h> gA:unsI
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int main(void) 2)MX<prH
{ ?D_^ 8\R
printf("Hello, world!\n"); E;rS"'D:
return 0; `V2doV)
} HJ+Q7)
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C++ X6Q\NJ"B
#include <iostream>
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int main() FI"KJk'
{ M3VTzwuf^S
std::cout << "Hello, world!" << std::endl; `>Ms7G9S~e
return 0; -xVZm8y
} tNG[|Bi#
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C++/CLI W+I""I*mV
int main() bk|?>yd
{ ^O
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System::Console::WriteLine("Hello, world!"); 0WSOA[R%[b
} L _Xbca=
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C# (C Sharp) 6&;h+;h
class HelloWorldApp D!V~g72j
{ `4-N@h
public static void Main() "BZL*hHq
{ ENy$sS6[D
System.Console.WriteLine("Hello, world!"); jx#9
} yioX^`Fc(~
} )4R[C={
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COBOL &EhOSu
IDENTIFICATION DIVISION. rpUTn!*u/
PROGRAM-ID. HELLO-WORLD. .aQ8I1~
.#}A/V.-Y
ENVIRONMENT DIVISION. CI1K:K AM
! n<SpW;
DATA DIVISION. +xS<^;
~NTKWRaR
PROCEDURE DIVISION. Zg9VkL6Z6
DISPLAY "Hello, world!". CT/>x3o
STOP RUN. 5fy{!
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Common Lisp i1 c[Gk.o
(format t "Hello world!~%") y9U~4
T m2+/qO,
*z^Au7,&
DOS批处理 Pa'N)s<
@echo off SmUiH9qNd,
echo "Hello, world!" QYEGiT
?-'GbOr!
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c :R
Eiffel N%S|Ey@f
class HELLO_WORLD 8~sC$sIlE
p_i',5H(
creation =&^tfD
make 7AF6aog
feature +k V$ @qH
make is )"J1ET,z
local uFuP%f!yY
io:BASIC_IO ?CldcxM#
do 9&zQ5L>
!!io sJMpF8
io.put_string("%N Hello, world!") WidLUv
end -- make y!T8(
end -- class HELLO_WORLD ,n`S
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Erlang %I;uqf
-module(hello). ?:6w6GwAA
-export([hello_world/0]). Bkg./iP5x
N|%X/UjZ2.
hello_world() -> io:fwrite("Hello, World!\n"). `7oYXk
/m4Y87
l{Et:W%|
Forth 8Vy/n^3)
." Hello, world!" CR 8Y_lQfJa
j
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Fortran [#fz[U
WRITE(*,10) k\RS L
10 FORMAT('Hello, World!') EHfB9%O7y
STOP R5\|pC
END FD5OO;$
>3}N;
/]of@
HTML ^a$L9p(
<HTML> 8tO.o\)h
<HEAD> q{+}0!o
<TITLE> Hello World! </TITLE> TPLv]$n
</HEAD> O)"Z% B
<BODY> lYey7tl{
<p>Hello World!</p> DPCQqV |7
</BODY> iba8G]2
</HTML> z/nW;ow
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gu\~}kD
H wYDdy gS
Lt
i2KY}/%
|{RCvm
INTERCAL 9v1 Snr
PLEASE DO ,1 <- #13 {;Oj
DO ,1 SUB #1 <- #238 9m<%+S5&
DO ,1 SUB #2 <- #112 U;*O7K=P
DO ,1 SUB #3 <- #112 ce*?crOV
DO ,1 SUB #4 <- #0 ,!X:wY}dW
DO ,1 SUB #5 <- #64 b}*q*Bq
DO ,1 SUB #6 <- #238 5=Y(.}6
DO ,1 SUB #7 <- #26 E(&zH;?_
DO ,1 SUB #8 <- #248 pD }b $
DO ,1 SUB #9 <- #168 TmK8z
DO ,1 SUB #10 <- #24 ?A04qk
DO ,1 SUB #11 <- #16 qE8Di\?
DO ,1 SUB #12 <- #158 $ab{GxmX'4
DO ,1 SUB #13 <- #52 SjIDzNI5
PLEASE READ OUT ,1 phB d+zQc
PLEASE GIVE UP m_FTg)_=
93ggCOaYA
c[$i )\0
Java )|#ExyRO
public class Hello cQsSJBZ[v5
{ ]:m4~0^#-(
public static void main(String[] args) MP.ye|i4Q
{ Kjpsz] ;
System.out.println("Hello, world!"); lTVz'ys
} D_G]WW8
} gZ-:4G|J
F%4N/e'L
#B
q|^:nj
JSP G&`5o*).bb
<% C
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out.print("Hello, world!"); ?j)#\s2
%> ~M1T
@Mv
HGi%b5:<=M
t3C#$>
MIXAL q^7=/d8
TERM EQU 19 the MIX console device number 9$}>O]
ORIG 1000 start address y<#Hq1
START OUT MSG(TERM) output data at address MSG &Aym@G|k?
HLT halt execution [E"3?p
MSG ALF "MIXAL" .y0u"@iF
ALF " HELL" Yv2L0bUo:
ALF "O WOR" >h~>7i(A
ALF "LD " {hm-0Q
END START end of the program *~w?@,}
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Nuva +;Gvp=hk
<..直接输出..> e@&2q{Gi=
Hello, world! Z-M4J;J@}
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Awa
<..或者..> 1_StgFu u
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<. [4@@b"H
// 不带换行 8ZJ6~~h
? "Hello, world!" Z=<D`
K6@ %@v
// 或者 FI)0.p
!!mGsgnW
// 带换行 F5M{`:/
?? 'Hello, world!' yVJ)JhV
.> ~H"-km"@
ey\(*Tu9
O* )BJOPa
OCaml |/Y!R>El
let main () = }:1qK67S
print_endline "Hello world!";; I*mBU^<9V
=/4}!B/
Tb*Q4:r"
Pascal $-6[9d-N
program Hello; IVeA[qA0
begin .Np!Qp1*
writeln('Hello, world!'); 4 XGEw9`3
end. AboRuHQ
?+$EPaC2
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Perl #vViEBVeN
#!/usr/local/bin/perl gEq6[G
print "Hello, world!\n"; z ^y -A?
=,08D^ xY
Tc|+:Usy
PHP ~dLe9-_9
<?php ?3i<^@?
print("Hello, world!"); 5"+;}E|q
?> dbF9%I@
5j _[z|W2
J`wx72/-ZW
Pike U;gy4rj
#!/usr/local/bin/pike k_Lv\'Ok
int main() \tdYTb.
{ '[bw7T
write("Hello, world!\n"); rKl
return 0; :z$+leNH\
} 8P&z@E{y
-&QpQ7q1
NI C.c3
PL/I %*Yb
J_j7
Test: procedure options(main); tcI Z
2H%
declare My_String char(20) varying initialize('Hello, world!'); t~Ic{%bdA
put skip list(My_String); ZKi?;ta=
end Test; Yof]
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-or)NE
Prolog fOk(ivYy
goal |1T[P)Q
write("hello,world!"). `|:` yl
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={{q_G\WD
Python 4=|oOIhgb
#!/usr/local/bin/python K=dG-+B~}
print "Hello, world!" Cn>t"#zs!~
|]?7r?=J9v
xDmwiVy
REXX )=0@4
say "Hello, world!" ETfoL.d$(
kQrby\F(<
cOP%R_ak?
Ruby i^rHZmT
#!/usr/bin/ruby 5[^Rf'wy
print "Hello, world!\n" BIT<J5>
x![ut
f6#1sO4"
Scheme jfZ)
(display "Hello, world!") _~!c%_
(newline) @rr\Jf""z
hr
g'Z5n
;Udx|1o
sed (需要至少一行输入) 2JHV*/Q
sed -ne '1s/.*/Hello, world!/p' !'=<uU-
i"{znKz vD
>}86#^F
Smalltalk j 2e|
Transcript show: 'Hello, world!' &3P"l.j
c2yZvi
Angt=q
SNOBOL w X.]O!^X~
OUTPUT = "Hello, world!" `V?NS,@$
END U#4>GO;A
PxJvE*6^H
.y#>mXm>
SQL SFRYX,0m
create table MESSAGE (TEXT char(15)); kX:8sbZ##4
insert into MESSAGE (TEXT) values ('Hello, world!'); ,go$6
select TEXT from MESSAGE; CW~c<,"
drop table MESSAGE; }`uq:y
RNX>I,2sh
CbT ;#0
Tcl wd
Di5-A4
#!/usr/local/bin/tcl tj
tN<