“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。 :-U53}Iy
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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》。 #XfT1
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以下是用不同语言写成的Hello World程序的几个例子: CMFC"e Se
Ada
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with Ada.Text_Io; use Ada.Text_Io; _trpXkQp
procedure Hello is "H@Fe
begin A`g.[7
Put_Line ("Hello, world!"); -FaaFw:Z;A
end Hello; :k\}Ik
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汇编语言 }\EL;sT
lZBv\JE
x86 CPU,DOS,TASM py=i!vb&Z%
MODEL SMALL xmOM<0T
IDEAL 1j+eD:d'
STACK 100H C&e8a9*,(a
?o8a_9+
DATASEG 3+j^E6@
HW DB 'Hello, world!$' >ks3WMm
n}f3Vrl
CODESEG >r~|1kQ.
MOV AX, @data y=wdR|b
MOV DS, AX E~}[+X@
MOV DX, OFFSET HW |Cu1uwy
MOV AH, 09H !*9FKDB{
INT 21H vWuyft*
MOV AX, 4C00H y]w )`}Ax
INT 21H fs7~NY
END kF#{An)P
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y _6r/z^
x86 CPU,GNU/Linux,NASM BL7>dZOa
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 'r6 cVBb}
;Enter this into "hello.asm" then type: 6R L~iD;X
;"nasm -f elf hello.asm" |I(%7K
;"ld hello.o -o hello" X"wFQa
;"./hello" vu44 !c@
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section .data ;data section declaration { qjUI
msg db 'Hello World!',0AH 1]HHe*'Z
len equ $-msg ;string length X,&`WPA:S
0,bt^a
section .text ;code section declaration V, E9Uds
global _start ;entry point (start of execution) *Gf&q
_start: mov edx,len ;string length S io1Q0
mov ecx,msg ;string start ykJ+%gla
mov ebx,1 ;file handle: stdout zI(xSX@
mov eax,4 ;sys_write g^qz&;R]
int 80h ;kernel system call .iN-4"_j1
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mov ebx,0 ;return value e<kpcF5{\
mov eax,1 ;sys_exit XadG\_?t`
int 80h ;kernel system call .[#xQ=9`
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,nI_8r"M>
x86 CPU,Windows,MASM32 \A` gK\/h
.386 :{x!g6bK@
.model flat,stdcall kBQ5]Q"
option casemap:none '
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;Include 文件定义 dvC0 <*V
include windows.inc b!0'Qidh0
include user32.inc }#1UD
includelib user32.lib er#8D6*
include kernel32.inc K3j_C`Se
includelib kernel32.lib "4KkKi
;数据段 X>3iYDe
.data Cm9 9?K
szCaption db 'A MessageBox!',0 l#
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szText db 'Hello,world!',0 F|DR
;代码段 <Sz>ZIISd
.code ,G/\@x%
start: 8}Fw%;Cb
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK zuK/(qZ
invoke ExitProcess,NULL Iv Y,9D
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |~7+/VvI+
end start USlF+RY@3L
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AWK 2,rY\ Nu_
BEGIN { print "Hello, world!" } [lmHXf@1C
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BASIC #9URVq,
传统版BASIC(例如GWBASIC):
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10 PRINT "Hello, world!" .CIbpV?T
20 END ORUWslMt
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或在提示符输入: #|)JD@;Q
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?"Hello, world!":END 3?a0
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现代版BASIC(例如Quick BASIC): Oex{:dO "F
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Print "Hello, world!" eD>-`'7<
} S'I
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以下的语句在Quick BASIC中同样有效: Km|9Too
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? "Hello,world!" _C7abw-
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BCPL .6lY*LI
GET "LIBHDR" Y&ct+w]%
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LET START () BE oO! 1
$( C:|q'"F
WRITES ("Hello, world!*N") j1'xp`jgv
$)
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1puEP*P
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Befunge =:t@;y
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, u|_ITwk
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w
d/ 'A\"o+
D=5t=4^H(
Brainfuck 7Va#{Y;Zy
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< g]EQ2g_N1
+++++++++++++++.>.+++.------.--------.>+.>. 6xDl=*&%
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C qaCi)f!Dl
#include <stdio.h> rR),~ @]sL
?{ 8sT-Z-L
int main(void) 1 $KLMW
{ 3iwoMrp
printf("Hello, world!\n"); "w:\@Jwu(
return 0; |k['wqn"
} `Yo-5h
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C++ h%CEb<
#include <iostream> Knw'h;,[
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int main() dy8In%
{ L.I}-n
std::cout << "Hello, world!" << std::endl; 34++Rr [G
return 0; g%fJyk'
} B
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C++/CLI :*F3
int main() PpJE|[]
{ $BR=IYby
System::Console::WriteLine("Hello, world!"); \>aa8LOe
} ^2Fs)19R
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C# (C Sharp) N%n1>!X)!
class HelloWorldApp #+k.b_LS
{ c4qp3B_w
public static void Main() M'>D[5;N~
{ Ht=6P)
System.Console.WriteLine("Hello, world!"); m_r@t*
} x[.z"$T@
} gN!E*@7
+ hyWo]nW0
uV/HNzC
COBOL 2RSHBo
IDENTIFICATION DIVISION. 1"4nmw}
PROGRAM-ID. HELLO-WORLD. ga2Q3mV
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ENVIRONMENT DIVISION. >zfZw"mEP
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DATA DIVISION. =?`y(k4a
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PROCEDURE DIVISION. H>X\C;X[
DISPLAY "Hello, world!". Jegx[*O>b
STOP RUN. w ;s ]n
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gvRc:5B[
Common Lisp QU,TAO
(format t "Hello world!~%") \0^r J1*
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@dT: 1s
DOS批处理 E^EU+})Ujr
@echo off ai;gca_P#
echo "Hello, world!" q _T?G e
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Eiffel .1[2 CjQ
class HELLO_WORLD hk lO:,`
dPyBY]`
creation z7.C\l
make v{rK_jq
feature gQk#l\w_
make is Z,8+@
local Y+"hu2aPkY
io:BASIC_IO [ilv/V<
do &"H<+>`
!!io x9o^9QJh
io.put_string("%N Hello, world!") xJH9qc ME
end -- make -Y jv&5
end -- class HELLO_WORLD .^N#|hp^
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Erlang +N(YR3
-module(hello). thm3JfQt
-export([hello_world/0]). 1A/c/iC
1R+ )T'in
hello_world() -> io:fwrite("Hello, World!\n"). }r<@o3t
M:1F@\<
FOUs=
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Forth :86luLFm
." Hello, world!" CR g`5`KU|
sh))[V"8
)r6SGlE[Y
Fortran XpAq=p0;
WRITE(*,10)
VjB`~
10 FORMAT('Hello, World!') j@?[vi
STOP B 1ZHV^
END 84oW
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HTML L};;o+5uJD
<HTML> 4-nr_
WCm4
<HEAD> 5vh"PlK`s
<TITLE> Hello World! </TITLE> <11Tqb
</HEAD> O]%m{afM
<BODY> a_iQlsU
<p>Hello World!</p> xP/1@6]_Je
</BODY> |`t!aG8
</HTML> C7 &
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2
INTERCAL ~ew**@N
PLEASE DO ,1 <- #13 ^(m6g &$(
DO ,1 SUB #1 <- #238 Gv+Tg/
DO ,1 SUB #2 <- #112 LX?r=_\
DO ,1 SUB #3 <- #112 0*:hm%g
DO ,1 SUB #4 <- #0 }v$=mLy
DO ,1 SUB #5 <- #64 NUNn[c
DO ,1 SUB #6 <- #238 UE#Ni 5
DO ,1 SUB #7 <- #26 O\8|niW|
DO ,1 SUB #8 <- #248 F?,&y)ri
DO ,1 SUB #9 <- #168 U!I_i*:U
DO ,1 SUB #10 <- #24 rs<&x(=Hv
DO ,1 SUB #11 <- #16 \gzwsT2&
DO ,1 SUB #12 <- #158 Rd1ku=
DO ,1 SUB #13 <- #52 `0G.Y
PLEASE READ OUT ,1 [Fj#7VZK
PLEASE GIVE UP pA,EUh|H
L9YwOSb.
k| cI!
Java 2=,Sz1`t
public class Hello yjFQk,A
{
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public static void main(String[] args) \/4%[Q2QDm
{ S{)n0/_
System.out.println("Hello, world!"); >]Yha}6h
} A%w]~ chC9
} }:D~yEP
Z
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56
kgL;$h
JSP FR6I+@ oX~
<% ]%Yis=v
out.print("Hello, world!"); k42ur)pb
%> sv6U%qV
DMxS-hl
+G[HZ,FL
MIXAL |mE+f]7$
TERM EQU 19 the MIX console device number H|:)K^o
ORIG 1000 start address P$
dgO
START OUT MSG(TERM) output data at address MSG Z
*<x
HLT halt execution aC
}1]7
MSG ALF "MIXAL" &b6@_C9
ALF " HELL" I\%Lb
z
ALF "O WOR" >h( rd1
ALF "LD " 8*PAgPj a
END START end of the program *|#JFy?c[
tc2GI6]e'
/Vd#q)b%T
Nuva 1Da [!^u,D
<..直接输出..> _xL&sy09t
Hello, world! -+_aL4.
-Fc#
<..或者..> 4kF .
m'"VuH?^
<. p'!,F; xX
// 不带换行 O*/-I
pM
? "Hello, world!" 5a|m}2IX
2&K|~~
// 或者 Wk6&TrWlY
7Z~szD
// 带换行 :h^UC~[h 3
?? 'Hello, world!' Ci9wF(<k
.> |{IU<o
x
u2O^3rG-
AG\852`1m
OCaml }ZVv
let main () = BOQV X&g%
print_endline "Hello world!";; si.a]k/f
~(L +4]
9x^
/kAB
Pascal m:Cx~
program Hello; 4x?u5L
9o
begin 9.#R?YP$
writeln('Hello, world!'); >8;%F<o2
end. A'-YwbY
C{,] 1X6g
zYF&Dv/u/
Perl &Wz:-G7<n
#!/usr/local/bin/perl +pViHOJu&V
print "Hello, world!\n"; ',s7h"
P(nHXVSUE
PjZvLK@a9)
PHP #I~dv{RX
<?php PH%gX`N
print("Hello, world!"); ;~$ $WU
?> 7:q-NzE\6
Yn2^nT=8
+Qb/:xQu
Pike *xTquV$
#!/usr/local/bin/pike ;p!hd}C
int main() :BxYaAVt^
{ &0Zk3D4
write("Hello, world!\n"); ^K8a#-
return 0; |8{iIvi/
} w/W?/1P>q
~EkGG
.
9+Bq00-Z$
PL/I 58'y~Ou
Test: procedure options(main); H>X1(sh#}
declare My_String char(20) varying initialize('Hello, world!'); }gRLW2&mR>
put skip list(My_String); f8jz49C
end Test; L(P:n-^
)^#Zg8L
{&qsh9ob
Prolog L\CM);y
goal G*p.JsZP
write("hello,world!"). O|zmDp8a+
s\FNKWQ
A?KKZ{Pl
Python @Hdg-f>y]
#!/usr/local/bin/python > 0)`uJ
print "Hello, world!" 'z!#E!i
f|1FqL+T]
<f{`}drp/
REXX Cy'W!qH
say "Hello, world!" ]JuB6o_L
r9*H-V$
p&doQh
Ruby `z`;eR2oX
#!/usr/bin/ruby k r^#B^
print "Hello, world!\n" NVZNQ{
1U9N8{xg9
HTpd~W/\
Scheme x+`3G.
(display "Hello, world!") 4GA-dtyV&
(newline) )?y"NVc*
8Kkr1}!wd
#|E. y^IC
sed (需要至少一行输入) &scD)
sed -ne '1s/.*/Hello, world!/p' 2;r^~:
urjp&L&
&Sp:?I-
Smalltalk S9055`v5
Transcript show: 'Hello, world!' )X$n'E
=DwH*U/YR
o;C)!
SNOBOL 3PeJPw
OUTPUT = "Hello, world!" |]b/5s;>
END 0LuY"(LR
<_uv!N
7O :Gi*MA
SQL sJ()ItU5i
create table MESSAGE (TEXT char(15)); o7B+f
insert into MESSAGE (TEXT) values ('Hello, world!'); OZ9j3Q;a$
select TEXT from MESSAGE; k5CIU}H"
drop table MESSAGE; tvCTC ey
8#-}3~l[
`P*j~ZLlXN
Tcl /^ 7
9|$E
#!/usr/local/bin/tcl XaSl6CH
puts "Hello, world!" >pHvBFa3G
3e1"5~?'<
)+R3C%
TScript KJZY.7
? "Hello, world!" _fw'c*j
lR^Qm|
13
p0w
Turing ]2
N';(R
put "Hello, world!" K2v)"|T)
{a%cU[q
FQ^uX]<3j
UNIX-style shell ^S$w,
程序中的/bin/sh可改为您使用的shell 5OE?;PJ(
?q`mr_x%?
#!/bin/sh wO
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echo 'Hello, world!' l]cQ7g5
y+h=x4t
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y>8k(
GUI EatDT*!
vUA`V\
Delphi ]z NL+]1_
program HelloWorld; xSZw,
uses tF(mD=[
Dialogs; yB[LO(i
begin AP@d2{"m}
ShowMessage('Hello, World!'); #}?$mxME*
end. F@3,>~[%I
oaE3Aa
]P^ +~
Nuva 6Wp:W1E{`
<. =wc[r?7
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) Hq8.O/Y"=
.> G9Ezm*I;:
2YQ$hL ~
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Visual Basic H&+s&