“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。 wti
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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?zaut
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以下是用不同语言写成的Hello World程序的几个例子: %36@1l-N
Ada #q xo1uV(c
with Ada.Text_Io; use Ada.Text_Io; /!`xqG#
procedure Hello is uf"(b"N0
begin S6fbwZZMG
Put_Line ("Hello, world!"); H5o=nWQ6e
end Hello;
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汇编语言 Yb1Q6[!
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x86 CPU,DOS,TASM sk
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MODEL SMALL 62K#rRS
IDEAL bfy=
STACK 100H qVjMflVoay
h
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DATASEG Y%>u.HzL
HW DB 'Hello, world!$' IaU%L6Q]
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CODESEG #7/39zTK
MOV AX, @data cH+ ~|3
MOV DS, AX ,J:Ro N_:
MOV DX, OFFSET HW q>5j (,6F
MOV AH, 09H cS
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INT 21H aK7}}
MOV AX, 4C00H !%.=35NS@E
INT 21H +d(|Jid
END iq,rS"
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x86 CPU,GNU/Linux,NASM 'S:$4j
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). v *`M3jb
;Enter this into "hello.asm" then type: yqB!0)
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;"nasm -f elf hello.asm" H8 xhE~'t
;"ld hello.o -o hello" 0sTR`Xk
;"./hello" E]=>@EX
J ;4aghzY
section .data ;data section declaration jx2{kK
msg db 'Hello World!',0AH NFR>[L V
len equ $-msg ;string length \N$)Q.M
+[_3h9BK
section .text ;code section declaration !SIk9~rJ
global _start ;entry point (start of execution) sV\K[4HG
_start: mov edx,len ;string length LWhPd\
mov ecx,msg ;string start 0?dr(
mov ebx,1 ;file handle: stdout ia_lP
mov eax,4 ;sys_write "M3;>"`G
int 80h ;kernel system call W+5. lf=2>
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mov ebx,0 ;return value 0N$FIw2
mov eax,1 ;sys_exit UM<s#t`\3
int 80h ;kernel system call ^)(tO$S
? Dn}
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x86 CPU,Windows,MASM32 TwI'XMO;A
.386
qI${7
.model flat,stdcall g4952u
option casemap:none =itQ@``r
;Include 文件定义 / :6|)AW.{
include windows.inc %%zlqd"0
include user32.inc e[0"x.gu
includelib user32.lib n9n)eI)R
include kernel32.inc p@[ fZj
includelib kernel32.lib ZY@ntV?
;数据段 P(/eVD#v
.data sx}S,aIU
szCaption db 'A MessageBox!',0 !&NrbiuN
szText db 'Hello,world!',0 `uH7~ r^
;代码段 O;|Cu7WU
.code kX8NRPW
start: &b7_%,Bx4
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK |(.%`BTD
invoke ExitProcess,NULL 9%1J..c
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> P,9Pn)M|
end start j4+Px%sW
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AWK K[LuvS
BEGIN { print "Hello, world!" } )nFyHAy-
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BASIC ]5Dh<QY&.
传统版BASIC(例如GWBASIC): -V;BkE76
Hmt2~>FI[
10 PRINT "Hello, world!" MU(I#Prpe
20 END Ip:54
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或在提示符输入: c?u*,d) G
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?"Hello, world!":END )*S:C
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现代版BASIC(例如Quick BASIC): ^$sqU
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Print "Hello, world!" 32j}ep.*
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以下的语句在Quick BASIC中同样有效: C4P<GtR9
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? "Hello,world!" qb/}&J7+
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BCPL &i.sSqSI5
GET "LIBHDR" 7GWOJ^)
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LET START () BE Qh(X7B
$( I.GoY[u_%
WRITES ("Hello, world!*N") x5mg<y2`Ng
$) nw0#gDI|
/ of K7/
(xRcG+3];
Befunge : -d_
"!dlrow olleH">v @NqwJ.%g
, H;l_;c`
^_@ -Ou.C7ol
2vX $:4
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Brainfuck >m..
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< oPM*VTMA
+++++++++++++++.>.+++.------.--------.>+.>. #j=yQrJ
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^B%=P
C l-l7jq]R
#include <stdio.h> X<P
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int main(void) \ "$$c
{ OTdijQLY
printf("Hello, world!\n"); AyOibnoZ2E
return 0; s&(;
} y,3ZdY"
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C++ fyA-*)oHv
#include <iostream> oSC'b%
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int main() =@?[.`
{ %&|
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std::cout << "Hello, world!" << std::endl; R]iV;j|
return 0; !W9:)5^X
} `+"(GaZ
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=/:
C++/CLI (Y@T5-!D
int main() $?G@ijk,
{ ElV!C}g
System::Console::WriteLine("Hello, world!"); E<[
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} }|Mwv
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C# (C Sharp) Z,A $h>Z
class HelloWorldApp dQ.#8o=
{ \`2'W1O
public static void Main() t'l4$}(
{ MmR6V#@:
System.Console.WriteLine("Hello, world!"); r(46jV.sD:
} L2ydyXIsd
} K+F"V W*?
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COBOL yXJ25Axb
IDENTIFICATION DIVISION. DfD
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PROGRAM-ID. HELLO-WORLD. .4)oZ
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ENVIRONMENT DIVISION. R[a-"
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DATA DIVISION. 1x:W 3.
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PROCEDURE DIVISION. ,=P&{38\q
DISPLAY "Hello, world!". 5M0Q'"`F:
STOP RUN. L(VFzPkY%
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Common Lisp gwRB6m$
(format t "Hello world!~%") <46&R[17M
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i}sAF/
DOS批处理 fY[Fwjj3
@echo off 1^![8>u"
echo "Hello, world!" ^w60AqR8
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Eiffel 1
:p'
class HELLO_WORLD ew~Z/ A
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creation c\{N:S>
make Sfz1p
feature +[!S[KE
make is )8@-
local j Q5 F}
io:BASIC_IO zjQ746<&)i
do \yr9j$
!!io L0fe
io.put_string("%N Hello, world!") p"ZvA^d\
end -- make nF <K84
end -- class HELLO_WORLD uL`#@nI
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Erlang ]#)(D-i
-module(hello). |Vx[
-export([hello_world/0]). +'<PW+U$
g"m'
C6;
hello_world() -> io:fwrite("Hello, World!\n"). Zv;nY7B
fp' '+R[
s6,~JF^
Forth WigtTAh4
." Hello, world!" CR @7twe;07r
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k$3pmy*
Fortran Z7a@$n3h
WRITE(*,10) >^s2$@J?p
10 FORMAT('Hello, World!') WHdM P
STOP !9;m~T7.
END # )y`Zz{h
&Hb%Q! ^Kb
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HTML lYG`)#T
<HTML> NN*L3yx
<HEAD> o$*(N
<TITLE> Hello World! </TITLE> <fvu)
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</HEAD> Nw*<e ]uD
<BODY> P0l
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<p>Hello World!</p> 5n3yc7NPP
</BODY> \f9WpAY
</HTML> dy&G~F28
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/mkT7,]
INTERCAL a{kJ`fK
PLEASE DO ,1 <- #13 )p\`H;7*V4
DO ,1 SUB #1 <- #238 {A0jkU
DO ,1 SUB #2 <- #112 YEu+kBlcQ
DO ,1 SUB #3 <- #112 os/h~,=
DO ,1 SUB #4 <- #0 U@OdQAX
DO ,1 SUB #5 <- #64 QLY;@-jF$
DO ,1 SUB #6 <- #238 CvU$Fsb
DO ,1 SUB #7 <- #26 ?Y4 +3`\x
DO ,1 SUB #8 <- #248 tbS hSbj
DO ,1 SUB #9 <- #168 Cn~VJ,l
g
DO ,1 SUB #10 <- #24 LYDiqOrx
DO ,1 SUB #11 <- #16 4 Ej->T.
DO ,1 SUB #12 <- #158 {`!6w>w0
DO ,1 SUB #13 <- #52 \3JCFor/
PLEASE READ OUT ,1 ;'S,JGpvT
PLEASE GIVE UP 3FiK/8mu
/vSGmW-*
d$$5&a
Java q} e#L6cM
public class Hello {=GmXd%D
{ !Cr3>tA
public static void main(String[] args) D6bYg `
{ ^~~Rto)Y
System.out.println("Hello, world!"); sX1DbEjj[o
} 1-y8Hy_a2
} 6>]_H(z7
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JSP ]Y[N=G
<% :nIMZRJ_!E
out.print("Hello, world!"); ,Cr%2Wg-
%> $s7U
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t%qep|
MIXAL _.s,gX
TERM EQU 19 the MIX console device number Qt.*Z;Gs
ORIG 1000 start address b/S:&%E
START OUT MSG(TERM) output data at address MSG '[$KG
HLT halt execution ,JwX*L<:
MSG ALF "MIXAL" Z<X=00,wg
ALF " HELL" eK7A8\;e
ALF "O WOR" #*iUZo
ALF "LD " \IL)~5d
END START end of the program |4@cX<d.
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Nuva A%D'Z85
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<..直接输出..> m9[ 7"I
Hello, world! nah?V"
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<..或者..> 'yiv.<4
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// 不带换行 &wQ;J)13
? "Hello, world!" .YF1H<gwa
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// 或者 Jqxd92 bI
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// 带换行 q1rj!7
?? 'Hello, world!' 7i" b\{5
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OCaml }d.X2?
let main () = g
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print_endline "Hello world!";; #L.,aTA<
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Pascal ](JrEg$K
program Hello; 6_`Bo%
begin y(|#!m?@
writeln('Hello, world!'); 3q%z
end. zmhc\M?z
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Perl Htgo=7!?\3
#!/usr/local/bin/perl YrL(4 Nt8
print "Hello, world!\n"; Z1fY' f
_$UJ'W})/
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PHP O:0{vu9AQ
<?php ~xqiasE#K
print("Hello, world!"); &PJ;B)b
?> !.UE} ^TV
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B?BOAH
Pike UNDl&C2vz
#!/usr/local/bin/pike qm_l#
u6
int main() rO#w(]
{ {F<0e^*
write("Hello, world!\n"); 2Hd\>{*
return 0; 3k'Bje?9~
} sywuS
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PL/I +2iD9X{$MX
Test: procedure options(main); =][
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declare My_String char(20) varying initialize('Hello, world!'); RI*n]HNgy+
put skip list(My_String); 5 tKgm /
end Test; i8?oe%9l
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ChK-L6
Prolog D?dBm
goal !H\;X`W|~D
write("hello,world!"). 1 iox0
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M-t9M~
Python H4ie$/[$8
#!/usr/local/bin/python $IQPB_:
print "Hello, world!" eKOEOm+
BWxfY^,'&6
O7 ;=g!j
REXX ]$ d ;P
say "Hello, world!" ~HIj+kN
e :HORc~U
i+14!LlI
Ruby \a+Q5g
#!/usr/bin/ruby 8-@@QZ\N
print "Hello, world!\n" *+rfRH]a
A O5&Y.A#
#TNjQNg@O
Scheme P;.roD9
(display "Hello, world!") dU9;sx
(newline) _&]7
yP7b))AW9
kn}^oRT
sed (需要至少一行输入) f"Iui
sed -ne '1s/.*/Hello, world!/p' 2|j=^
1 3]e< '
deAV:c
Smalltalk |?V7E\S
Transcript show: 'Hello, world!' W(]A^C=/
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SNOBOL AZ(zM.y!#_
OUTPUT = "Hello, world!" S`vt\g$ dN
END poAJl;T
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XMS:F]HN
SQL jOT/|k
create table MESSAGE (TEXT char(15)); Stwg[K0<
insert into MESSAGE (TEXT) values ('Hello, world!'); R[zN?
select TEXT from MESSAGE; MH#Tp#RG
drop table MESSAGE; Y/J~M$9P,
/wEl\Kx
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Tcl >/74u/&
#!/usr/local/bin/tcl rA
={;`
puts "Hello, world!" se.HA
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J&j5@
TScript by+xK~>
? "Hello, world!" LilK6K
B:X%k/{
hV~M!vFxA
Turing sg=G<50i
put "Hello, world!" xxs
+=.2
%l8!p'a
Pd+*syOM
UNIX-style shell ^oav-R&
程序中的/bin/sh可改为您使用的shell R]yce2w" z
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#!/bin/sh S!PG7hK2
echo 'Hello, world!' v@]SddP,?
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!D F~]&
GUI 6fw7\u
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Delphi =COQv= GT
program HelloWorld; qv(3qY
uses d-b<_k{p
Dialogs; :@)R@. -
begin ,Z
@I"&H
ShowMessage('Hello, World!'); eyh}O
end. 0rL.~2)V
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Nuva 7 q!==P=
<. $(gL#"T
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) 7zx
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