“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。 v=?2S
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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》。 $}o
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以下是用不同语言写成的Hello World程序的几个例子: 'LS z f/w
Ada bt/ =Kq#
with Ada.Text_Io; use Ada.Text_Io; y2|R.EU\m<
procedure Hello is p $`92Be/
begin *>[3I}mM
Put_Line ("Hello, world!"); (u1m]WYL
end Hello; ~nY]o"8D
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bPbb\|u0d
汇编语言 '{b1!nC;
DN] v_u+}
x86 CPU,DOS,TASM )>a B
MODEL SMALL 5&!c7$K0
IDEAL ,,4
GNbBC
STACK 100H |`/TBQz:r
.qv'6G
DATASEG +&=?BC}L9^
HW DB 'Hello, world!$'
jN*:QI
}6u2*(TmD
CODESEG 8|^CK|m6*
MOV AX, @data (eWPis[
MOV DS, AX 23]Y<->Eu<
MOV DX, OFFSET HW OFU/gaO~
MOV AH, 09H {KL5GowH
INT 21H {y)s.b~JB
MOV AX, 4C00H EcL-V>U#M
INT 21H T^.Cc--c
END aM3gRp51cj
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x86 CPU,GNU/Linux,NASM zZ-\a[F
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). r(A.<`\
;Enter this into "hello.asm" then type: \}0-^(9zd
;"nasm -f elf hello.asm" d^E [|w;
;"ld hello.o -o hello" 4,p;Km&
;"./hello" uBrMk
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section .data ;data section declaration ;q>9W,jy
msg db 'Hello World!',0AH V^s0fWa
len equ $-msg ;string length gb|Q%LS9R
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section .text ;code section declaration WYcA8X/
global _start ;entry point (start of execution) <If35Z)~
_start: mov edx,len ;string length nw:-J1kWR
mov ecx,msg ;string start #'baPqdO
mov ebx,1 ;file handle: stdout 9LJZ-/Wq
mov eax,4 ;sys_write YX*x&5]lq
int 80h ;kernel system call -V.d?A4"
!D^c3d
mov ebx,0 ;return value f9$xk|2g
mov eax,1 ;sys_exit +j14Q$
int 80h ;kernel system call l! bv^
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(5L-G{4
x86 CPU,Windows,MASM32 +kK
.386 s@4nWe
.model flat,stdcall B=f,QU
option casemap:none zmuMWT;
;Include 文件定义 x Gk6n4Gg
include windows.inc FDzqL;I
include user32.inc O*6n$dUj3
includelib user32.lib \c,pEXG
include kernel32.inc DL^o_61
includelib kernel32.lib "UFs~S|e
;数据段 0pb'\lA
.data OPJ: XbG
szCaption db 'A MessageBox!',0 Y$K!7Kq
szText db 'Hello,world!',0 -_OS%ARa
;代码段 &
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.code 8)*2@-Rp
start: )j l8!O7
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK *A 'FC|\
invoke ExitProcess,NULL DE$q+j0P
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> g^Yl TB
end start >r@.F%
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B;6]NCxD
AWK 9LnN$e
BEGIN { print "Hello, world!" } ;h=*!7:
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BASIC y;cUl, :v
传统版BASIC(例如GWBASIC): F'}'(t+oAm
7R.Q
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10 PRINT "Hello, world!" .R*!aK
20 END "^j>tii
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或在提示符输入: Xr63?N
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?"Hello, world!":END k,F"-K+M
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现代版BASIC(例如Quick BASIC): Xl7aGlH
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Print "Hello, world!" RrZM&lXY
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以下的语句在Quick BASIC中同样有效: ZIR0PQh\
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? "Hello,world!" gU^$Sx7'
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BCPL _ZB\L^j)
GET "LIBHDR" Gl %3XdU
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LET START () BE 9h90huyKF
$( -ezY= 0Q&
WRITES ("Hello, world!*N") B5V_e!*5F*
$) J&/lx${
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thi1kJ`L
Befunge 8(g:HR*;
"!dlrow olleH">v b+-f.!j
, [H\:pP8t
^_@ 54;J8XT7
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Brainfuck >KLtY|o)
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Snly UP~P
+++++++++++++++.>.+++.------.--------.>+.>. =\#%j|9N9
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C XfE?C:v
#include <stdio.h> 1be %G [*
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int main(void) Ab%;Z5$fr
{ EFuvp8^y
printf("Hello, world!\n"); W!blAkM%i
return 0; mME4 l
} n~V4nj&_T
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C++ s5.AW8X=?*
#include <iostream> 5ercD
!MDNE*_
int main() (BxJryXm
{ +MbIB&fRCB
std::cout << "Hello, world!" << std::endl; 'bGX-C
return 0; > oA?6x
} &Cim!I
"\Egs)\
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C++/CLI 4nH*Ui!T
int main() `-`qdda
{ !UOCJj.cA
System::Console::WriteLine("Hello, world!"); [%50/_h
} kg][qn|>J]
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C# (C Sharp) `nKH"TaX
class HelloWorldApp &R|/t:DN
{ fP
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public static void Main() (>6*#9#p
{ +x9cT G
System.Console.WriteLine("Hello, world!"); #j#_cImE
} .6O"|
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} uPYmHA}_/
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q#Zs\PD
COBOL ZvYLL{>}w
IDENTIFICATION DIVISION. j*e6vX
PROGRAM-ID. HELLO-WORLD. mNf8kwr
pME{jD
ENVIRONMENT DIVISION. ZKQ hbNT
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DATA DIVISION. *19ax&|*S
{7cX#1
PROCEDURE DIVISION. EM7+VO(
DISPLAY "Hello, world!". 2 oa#0`{
STOP RUN. %8*64T")
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>@WX>0`ht
Common Lisp X1IeSMAe
(format t "Hello world!~%") Eh-n
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<9=9b_z
DOS批处理 {QBB^px
@echo off /&u<TJ4
echo "Hello, world!" N=:5eAza
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Eiffel %}86D[PF
class HELLO_WORLD M
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]
2DH;
creation ZYf2XI(_"
make U.AjYez
feature -",=G\XZ
make is y%sroI('y
local ^qCkt1C-M
io:BASIC_IO UA[,2MBp
do Cv$
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!!io 9Rm/V5
io.put_string("%N Hello, world!") f<+4rHT
end -- make bX.ja;;
end -- class HELLO_WORLD @i^~0A#q*
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Erlang v7%X@j]ji
-module(hello). t9&cE:n
-export([hello_world/0]). `cx]e
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hello_world() -> io:fwrite("Hello, World!\n"). Z5c~^jL$-
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Forth >7!6nF3x,
." Hello, world!" CR tb:L\A^:
%Pksv}
^QuiH'
Fortran ?ER-25S
WRITE(*,10) {]z4k[;.h
10 FORMAT('Hello, World!') ,!V]jP)
STOP @&D?e:|!U
END
;> m"x
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s>0Nr
HTML GDYFU*0
<HTML> 9%*wb`&
<HEAD> >3awn*N
<TITLE> Hello World! </TITLE> Kj=b[e%
</HEAD> y9#$O(G
<BODY> SXao|{?O
<p>Hello World!</p> qO`)F8
</BODY> tpy>OT$
</HTML> 6#j$GH *
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HQ9+ B?$ "\;&
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nhG
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INTERCAL "O8gJ0e
PLEASE DO ,1 <- #13 IVlf=k
DO ,1 SUB #1 <- #238
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DO ,1 SUB #2 <- #112 +UJuB
DO ,1 SUB #3 <- #112 _C\[DR0n
DO ,1 SUB #4 <- #0 =)O,`.M.Y
DO ,1 SUB #5 <- #64 ogFKUD*h&>
DO ,1 SUB #6 <- #238 x{NX8lN
DO ,1 SUB #7 <- #26 z} '! eCl
DO ,1 SUB #8 <- #248 " P)*FT
DO ,1 SUB #9 <- #168 2oJb)CB
DO ,1 SUB #10 <- #24 h7s;m
DO ,1 SUB #11 <- #16 [ofqGwpDG
DO ,1 SUB #12 <- #158 nW"q
DO ,1 SUB #13 <- #52 y*{Zbz#{
PLEASE READ OUT ,1 Rl|4S[
PLEASE GIVE UP [i0Hm)Bd3
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Java 3]-_q"Co4f
public class Hello `nUO l
{ l"n{.aL
public static void main(String[] args) >;z<j$;F<
{ iCP/P%
System.out.println("Hello, world!"); CE15pNss
} +i\&6HGK;-
} Sx
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JSP RtG}h[k/X
<% ^IKO2Ft
out.print("Hello, world!"); `IYuz:
%> p0.|<
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K/ &?VIi`z
MIXAL ND<!4!R^
TERM EQU 19 the MIX console device number 8@NH%zWBp
ORIG 1000 start address :Q+5,v-c
START OUT MSG(TERM) output data at address MSG I ];M7
HLT halt execution ylKmj]A
MSG ALF "MIXAL" 9+,R`v
ALF " HELL" 1Y_w5dU
ALF "O WOR" "^I
mb,
ALF "LD " Nr2 C@FU:0
END START end of the program RFh"&0[
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/yLZ/<WN
Nuva 6 \B0^
<..直接输出..> @DW[Z`X
Hello, world! OL7_'2_z.
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<..或者..> ,:+dg(\r
Ld^GV
<. R{,ooxH\J
// 不带换行 tweY'x.{
? "Hello, world!" .kTG[)F0b
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// 或者 b]E|*
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// 带换行 1B*WfP~
?? 'Hello, world!' Qr#1 u
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.^)UO
2!N8rHRt
OCaml J==SZ v
let main () = ,mPnQ?
print_endline "Hello world!";; *M7E#bQ5B
1GEK:g2B
"QoQ4r<|
Pascal jQU"Ved
program Hello; K!D
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begin yV)m"j
writeln('Hello, world!'); K; FW
end. <lr*ZSNY
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{-
Perl k\Q,h75
#!/usr/local/bin/perl d@mo!zu
print "Hello, world!\n"; 2A4FaBq"
2?@j~I=s2h
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PHP -Xz?s
<?php OT
%nr zP
print("Hello, world!"); 1Xy]D
?> _DRrznaw
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>#+IaKL7
Pike Y}6n]n;uR
#!/usr/local/bin/pike }awzO#
int main() ?_\$
{ (3\Xy
write("Hello, world!\n"); r!}al5~&
return 0; Dc~,D1xWj
} 66snC{gU
\EoX8b}$b0
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PL/I 3#wcKv%>&_
Test: procedure options(main); 5CAR{|a
declare My_String char(20) varying initialize('Hello, world!'); gPS&^EdxA
put skip list(My_String); M8w5Ob
end Test; }4co)B"
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HEK-L)S.
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Prolog l? #xAZx&_
goal a)*6gf<