“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。 1}jwv_0lL
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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》。 p Yaq1_<+
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以下是用不同语言写成的Hello World程序的几个例子: 7V KTI:5y
Ada Oz7WtN
with Ada.Text_Io; use Ada.Text_Io; H8?Kgaj~vf
procedure Hello is ccJ!N
begin y3pr(w9A
Put_Line ("Hello, world!"); .RxAYf|
end Hello; Zn"1qLPF
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汇编语言 @Xq3>KJ_)H
?#_] Lzn'
x86 CPU,DOS,TASM
B!+`km5
MODEL SMALL ;c;PNihg
IDEAL A+bU{oLr
STACK 100H < e7
[";<YR7iRN
DATASEG J;cTEB
HW DB 'Hello, world!$' V-%Am
gTwxmp.,
CODESEG {h *Pkn1
MOV AX, @data m@^!?/as
MOV DS, AX VJ$UpqVm
MOV DX, OFFSET HW 7cMSJM(]G
MOV AH, 09H PK|"+I0
INT 21H Ae 3:"
MOV AX, 4C00H xk$U+8K
INT 21H \t
04-
END H}B%OFI \+
[_?dp aTt
q/HwcX+[b
x86 CPU,GNU/Linux,NASM mo-
Y %
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). iLD:}yK
;Enter this into "hello.asm" then type: &ZUV=q%g9n
;"nasm -f elf hello.asm" T?'Vb
;"ld hello.o -o hello" o$-!E(p
;"./hello" XB'PEvh8
by8~'?
section .data ;data section declaration oN6X]T<
msg db 'Hello World!',0AH M;K%=l$NG
len equ $-msg ;string length GV T[)jS
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section .text ;code section declaration Z/hgr|&}
global _start ;entry point (start of execution) \,5OPSB
_start: mov edx,len ;string length { |[n>k
mov ecx,msg ;string start aZ{]t:]
mov ebx,1 ;file handle: stdout I?!7]S n$
mov eax,4 ;sys_write =vZF/r
int 80h ;kernel system call P\R#!+FgW8
KWH l+pL
mov ebx,0 ;return value q:/<^|
mov eax,1 ;sys_exit wio}<Y6Xz
int 80h ;kernel system call d~U}IMj
x[5uz))
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x86 CPU,Windows,MASM32 kL1StF#p
.386 v8!Ts"
.model flat,stdcall Wy`ve~y
option casemap:none :AM5EO
;Include 文件定义
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include windows.inc -%eBip,'yl
include user32.inc z<c%Xl\$%
includelib user32.lib .V Cfh+*J#
include kernel32.inc ^yo~C3r~
includelib kernel32.lib >MeM
;数据段 n6Qsug$z
.data #[C=LGi
szCaption db 'A MessageBox!',0 _rU%DL?
szText db 'Hello,world!',0 kg^VzNX
;代码段 oX
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.code w( ^
start: efu'PfZ`&
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK n$O[yRMI[
invoke ExitProcess,NULL hPB^|#}
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <//#0r*
end start d1rIU6
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k Z>Xl- LV
AWK $|V@3`0
BEGIN { print "Hello, world!" } m=hUHA,p4
<)dHe:
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BASIC {5,
]7 =]
传统版BASIC(例如GWBASIC): _^5OoE"}!
gx',~
10 PRINT "Hello, world!" j aEUz5
20 END @jxAU7!
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或在提示符输入: WQ1~9#
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?"Hello, world!":END 88l\8k4r
RMvq\J}w!
现代版BASIC(例如Quick BASIC): 2`;&Uwt
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Print "Hello, world!" _vV3A3|Ec,
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以下的语句在Quick BASIC中同样有效: J )DFH~p
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? "Hello,world!" 5SNa~
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bk}'wcX<+]
p9`!.~[
BCPL -E(0}\
GET "LIBHDR" Glw_<ag[
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LET START () BE miTySY6^
$(
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WRITES ("Hello, world!*N") <n-}z[09
$) 'C2X9/!,
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O DO'!T-
Befunge O8Dav^\y?
"!dlrow olleH">v p-Jp/*R5
, 7H l>UX,|
^_@ &{uj3s&C
nign"r
hRwj-N%C
Brainfuck MoX~ZewWR
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< -+ha4JOB
+++++++++++++++.>.+++.------.--------.>+.>. ,ut-Di=6
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C z*FCd6X
#include <stdio.h> aJ/}ID
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int main(void) y2{uEbA
{ !jTtMx
printf("Hello, world!\n"); [^S(SPL
return 0; :2zga=)g
} BH"OphE
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C++ {KGEv%
#include <iostream> tSVWO]<
[Xyu_I-c
int main() U5RLM_a@M
{ VchI0KL?
std::cout << "Hello, world!" << std::endl; 4Y5lP00!}
return 0; |8q:sr_
} !*eDT4a
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<?:
C++/CLI q)j_QbW)
int main() 0Fw4}f.o
{ DEw>f%&4
System::Console::WriteLine("Hello, world!"); tP][o494\&
} B%^W$7
q
bt{b%r
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C# (C Sharp) 9]Fi2M
class HelloWorldApp 'CMbqLk#
{ U
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public static void Main() akA7))Q
{ 1PB"1.wnd
System.Console.WriteLine("Hello, world!"); #soV'SFG
} J6I:UML
} [} zzG@g,J
kz\Ss|jl
\47djmG-
COBOL lHUd<kEC
IDENTIFICATION DIVISION. lz7?Z
PROGRAM-ID. HELLO-WORLD. }6_*i!68"U
Lc#GBaJ
ENVIRONMENT DIVISION. 2{Y~jYt{h
Uc;~q-??#
DATA DIVISION. K0YQ b&*k
m{;j
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PROCEDURE DIVISION. p9>1a j2a
DISPLAY "Hello, world!". k5%W8dI
STOP RUN. B[,AR"#b
BPuum
?o6X_UxW!
Common Lisp M>_vsI^I'
(format t "Hello world!~%") k-Yli21-/|
'eo/"~/*w
;,}Dh/&E
DOS批处理 Z%Fc
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@echo off 5%%e$o+
echo "Hello, world!" 4`B3Kt`o
"ze-Mb
} J[Z)u
Eiffel 4_`(c1oA
class HELLO_WORLD 1Q/=s,{u
/go|r '
creation 6CCm1F{`
make AP1&TQ,&
feature rQxiG[0
make is "<"m}rE?Q
local s IFE:/1,
io:BASIC_IO g<N;31:c\
do ^)(-7H
!!io B<Q)z5KK
io.put_string("%N Hello, world!") 0NeIQr1N_
end -- make *`q?`#1&&.
end -- class HELLO_WORLD ", p5}}/
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2~
Erlang W,|+Dl
-module(hello). FUarI5#fwF
-export([hello_world/0]). h
8xcq#
{h=gnR-9
hello_world() -> io:fwrite("Hello, World!\n"). 84WX I#BH
>%ovL8F
c: r25
Forth \h"U+Bv7
." Hello, world!" CR QC?~$>h!?
w_f.\\1r
]rv4O@||w
Fortran Pa6pq;4St
WRITE(*,10) r'`7}@H*
10 FORMAT('Hello, World!') MkL)
STOP ZfH+Iqd
END ua)jGif
m"T}em#
jsQHg2Vd
HTML z %Bzf~N9
<HTML> @c-
<HEAD> +fvD1xHI
<TITLE> Hello World! </TITLE> qJag>OY
</HEAD> m):*>o55
<BODY> !> =ybRe
<p>Hello World!</p> S=0DQ19
</BODY> *s,[Uy![
</HTML> lLp,sNAj
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L$.A3>
PcBD;[cn
INTERCAL 7o0zny3?
PLEASE DO ,1 <- #13 !b"?l"C+u
DO ,1 SUB #1 <- #238 sO`
oapy
DO ,1 SUB #2 <- #112 n>?D-)g
DO ,1 SUB #3 <- #112 CxTmW5l
DO ,1 SUB #4 <- #0 ^nK<t?KS
DO ,1 SUB #5 <- #64 x9,jXd
DO ,1 SUB #6 <- #238 .[}G{%M~[
DO ,1 SUB #7 <- #26 z)S6f79`Q
DO ,1 SUB #8 <- #248 {vGJ}q?Sd"
DO ,1 SUB #9 <- #168 +U1
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DO ,1 SUB #10 <- #24 a%e`
DO ,1 SUB #11 <- #16 hbOXR.0z
DO ,1 SUB #12 <- #158 Z4EmRa30 p
DO ,1 SUB #13 <- #52 &iInru3
PLEASE READ OUT ,1 D8<C7
PLEASE GIVE UP 37$
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*I)J%#
Java uN:KivVe
public class Hello HeO:=OE~>
{ kDE-GX"Y
public static void main(String[] args) ~\mh\a&
{ a3>/B$pE
System.out.println("Hello, world!"); :{#O
} +]s,VSL5`
} S~i9~jA
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0muC4
JSP v !8=B21
<% t&xoi7!$
out.print("Hello, world!"); 8 ECX[fw
%> U
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F?|Efpzow?
MIXAL *m}8L%<HT
TERM EQU 19 the MIX console device number X>Vc4n<}
ORIG 1000 start address =w!ik9
START OUT MSG(TERM) output data at address MSG \c
-m\|
HLT halt execution HiA E9
MSG ALF "MIXAL" `^Vd*
ALF " HELL" }! EVf
ALF "O WOR" dgjK\pH`h
ALF "LD " -B H/)$-$
END START end of the program O|V0WiY<
B=!!R]dxA
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Nuva J(l\VvK
<..直接输出..> PqV
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Hello, world! 8u2k-_9
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<..或者..> $
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' @RF
<. >`\.i,X.D
// 不带换行 b3^:Bh9
? "Hello, world!" `*3A7y
bGCC?}\
// 或者 ==OUd6e}
>jX"
// 带换行 &t^*0/~
?? 'Hello, world!' -67Z!N
.> 2n,z`(=
&{V |%u}v
`Pvi+:6\Y
OCaml 8f9wUPr
let main () = ZC N}iQu4
print_endline "Hello world!";; [(heE
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-Cs( 3[
Pascal nzC *mPX8
program Hello; %):_
begin $6a9<&LP_
writeln('Hello, world!'); Gr\ ]6
end. A?H#bRAs
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Perl Z)s
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#!/usr/local/bin/perl hzsQK_;S
print "Hello, world!\n"; 2iG+Ek-?"
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m$p}cok#+S
PHP l8FJ \5'M
<?php 5vyg-'
print("Hello, world!"); A|\A|8=b
?> lxyTh'
)8A.Wg4S;c
&DWSf`:Hx
Pike LDr?'M!D
#!/usr/local/bin/pike e*2^
int main() 9\4x<*
{ AioW*`[WjA
write("Hello, world!\n"); Rn~'S2`u
return 0; YVMvT>/,
} 5@2Rl>B$
w a_{\v=
4Y8=
PL/I ^Kz?SO
Test: procedure options(main); |M;Nq@bRv
declare My_String char(20) varying initialize('Hello, world!'); MJ JC6:
put skip list(My_String); [P
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end Test; <[k3x8H'
#c:s2EL
Zi~.
Prolog ESCN/ocV
goal [c3!xHt5O
write("hello,world!"). #kv9$
8g0 #WV
mD9Iao%4~
Python |Q/LC0?
#!/usr/local/bin/python IU8zidn&
print "Hello, world!" cb^IJA9}
$5i\D
rs
~^2w)-N
REXX ,/?J!W@m
say "Hello, world!" oJTEN}fL
$mPR)T
uOv<*Jld*
Ruby ZWCsrV*;
#!/usr/bin/ruby a fa\6]m
print "Hello, world!\n" =FzmifTc
!igPyhi,hl
@&m [w'tn
Scheme NPH(v`
(display "Hello, world!") v@{y}
(newline) rN&fFI
^aB;Oo
[)I^v3]U
sed (需要至少一行输入) S%\5"uGa
sed -ne '1s/.*/Hello, world!/p' +ywz@0nx
HIc;Lc8$
Z;uKnJh
Smalltalk 7KlL%\
Transcript show: 'Hello, world!' 8'Q+%{?1t
XZOBK^,5^B
=78y*`L
SNOBOL .4a|^ vT
OUTPUT = "Hello, world!" QT%`=b
END (d&" @
4BMu0["6|s
wo&IVy@s$
SQL "o--MBq4
create table MESSAGE (TEXT char(15)); (f&V 7n
insert into MESSAGE (TEXT) values ('Hello, world!'); +PYV-@q
select TEXT from MESSAGE; :rr<#F
drop table MESSAGE; zu}uW,XH-
Vx!ZF+
I%4eX0QY=z
Tcl dcrvEc_/
#!/usr/local/bin/tcl =#2%[kG q
puts "Hello, world!" NN7KwVg
&- p(3$jn7
~~{lIO)&