“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。 k!z.6di
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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》。 TXd6o=
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以下是用不同语言写成的Hello World程序的几个例子: [T'[7Z
Ada c#?~1@=
with Ada.Text_Io; use Ada.Text_Io; 1H%p|'FKA
procedure Hello is %H_-`A`
begin qfAnMBM1@
Put_Line ("Hello, world!"); O,+9r_Gh
end Hello; }"RVUYU
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汇编语言 st.{AEv@
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x86 CPU,DOS,TASM L>Ze*dt
MODEL SMALL 2!9W:I7
IDEAL qxyY2&
STACK 100H >X[:(m'
ut]&3f''
DATASEG iBWEZw)
HW DB 'Hello, world!$' ME)='~E
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CODESEG Bn.R,B0PL
MOV AX, @data E@Ewx;P5
MOV DS, AX g@t..xJ,
MOV DX, OFFSET HW B4zuWCE@
MOV AH, 09H 5KTFf6Uq
INT 21H #5^OO ou|
MOV AX, 4C00H PxWH)4
INT 21H &eO.h%@
END &_@M
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x86 CPU,GNU/Linux,NASM } nIYNeP?D
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). !Dc;R+Ir0!
;Enter this into "hello.asm" then type: I"8Z'<|/\q
;"nasm -f elf hello.asm" ~rq:I<5
;"ld hello.o -o hello" Xmb##:
;"./hello" e<8KZ
W?N+7_%'
section .data ;data section declaration _TJkYz$
msg db 'Hello World!',0AH +?Q HSIQo
len equ $-msg ;string length VgY6M_V
q)@;8Z=_c
section .text ;code section declaration <Vh5`-J
global _start ;entry point (start of execution) <Nloh+n=
_start: mov edx,len ;string length vy7?]}MvV
mov ecx,msg ;string start wsR\qq
mov ebx,1 ;file handle: stdout {65YTt%
mov eax,4 ;sys_write G7GKO
int 80h ;kernel system call ZOppec1D
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mov ebx,0 ;return value 3qV~C{S
mov eax,1 ;sys_exit "WPWMQ+
int 80h ;kernel system call YOfYa
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b;vVlIG
x86 CPU,Windows,MASM32 Dl\0xcE
.386 -EU=R_yg
.model flat,stdcall q{[y4c1bG{
option casemap:none gtY7N>e
;Include 文件定义 4Pf"R~&[
include windows.inc \|4F?Y
include user32.inc p2O [r
includelib user32.lib 1b7?6CqV
include kernel32.inc P= E10
includelib kernel32.lib RN&8dsreZp
;数据段 z>=;Xe8P8n
.data sUkn.g!
szCaption db 'A MessageBox!',0 .G<Or`K^i
szText db 'Hello,world!',0 l;h -`( 11
;代码段 \f]w'qiW5
.code nkN2Bqt$
start: Xp6Z<Z&N
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK wk=s3^
invoke ExitProcess,NULL `sv]/8RN
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ;s4e8![o3
end start b+dmJ]c
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AWK hA`9[58/
BEGIN { print "Hello, world!" } gxVJH'[V5
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BASIC _jVJkg)]
传统版BASIC(例如GWBASIC): ;ae6h
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10 PRINT "Hello, world!" O
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20 END -O@/S9]S)
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或在提示符输入: Idj Z2)$
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?"Hello, world!":END f8f|'v|
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现代版BASIC(例如Quick BASIC): JmBMc}54
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Print "Hello, world!"
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以下的语句在Quick BASIC中同样有效:
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? "Hello,world!" E*v+@rv
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BCPL u b@'(*
GET "LIBHDR" 0zjGL7
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LET START () BE k6;pi=sYNW
$( $7Tj<;TV
WRITES ("Hello, world!*N")
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$) 4LJOT_
3 "|A5>Vo
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Befunge S!
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"!dlrow olleH">v L_=3`xE
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< You~
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+++++++++++++++.>.+++.------.--------.>+.>. hg `N`O
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#include <stdio.h> hSk
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int main(void) z+?48}
{ Ap}`Q(.
printf("Hello, world!\n"); _`9WNJiL
return 0; uVw|jj
} S.owVMQ
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C++ t\ 9Y)d
#include <iostream> }sfvzw_
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int main() XfwH1n/o#
{ (8GA;:G7G
std::cout << "Hello, world!" << std::endl; &([Gc+"5E.
return 0; wY7+E/
} 3cFvS[JG
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C++/CLI Nw3IDy~T
int main() i32S(3se
{ rT{2
System::Console::WriteLine("Hello, world!"); CyJZip
} :-b-)*TC;
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C# (C Sharp) @])}+4D(S
class HelloWorldApp 35SL*zS@-
{ 'G3|PA7v
public static void Main() CDFkH
{ p?+;[!:
System.Console.WriteLine("Hello, world!"); }An;)!>(nF
} 0h"uJco,
} .1""U
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COBOL Lor__
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IDENTIFICATION DIVISION. /.m}y$@GV
PROGRAM-ID. HELLO-WORLD. `Jl_'P}
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ENVIRONMENT DIVISION. )B Xl|V,
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DATA DIVISION. Q".p5(<
lp]q%P
PROCEDURE DIVISION. dcN4N5r
DISPLAY "Hello, world!". S)A;!}RK6
STOP RUN. Ns[.guWu-
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Common Lisp ; 5!8LmZ0#
(format t "Hello world!~%") FVoKNaK-
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NJ!}(=1|K
DOS批处理 hhr>nuA
@echo off nZkMyRk
echo "Hello, world!" EaN^<
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Eiffel /C[XC7^4'
class HELLO_WORLD ZF;s`K)
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creation N_y#Y{c{(
make X#u< 3<P
feature 2H`;?#Uq:
make is vb k4
local :j%
B(@b
io:BASIC_IO kX'a*AG
do KU;m.{
!!io unkA%x{W;
io.put_string("%N Hello, world!") X0%BE!
end -- make qnU$Pd
end -- class HELLO_WORLD vXcgl
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Erlang )yv~wi
-module(hello). A,GJ6qp3
-export([hello_world/0]). z_9qT"vF
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hello_world() -> io:fwrite("Hello, World!\n"). {:BY
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~DK=&hCd!
0,[-4m
Forth 8HH\wu$$e
." Hello, world!" CR _jrkR
n1 "
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Fortran R2nDK7j
WRITE(*,10) uWerC?da
10 FORMAT('Hello, World!') ;JR_z'<
STOP bn"z&g
END ~1.~4~um
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HTML $*dY f
<HTML> gd\b]L?>O
<HEAD> m_>~e}2'A
<TITLE> Hello World! </TITLE> B7BikxUa
</HEAD> Ty"=3AvRLV
<BODY> k.w}}78N2N
<p>Hello World!</p> &pLCN[a
</BODY> ]7_O#MY1
</HTML> 97SG;,6
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INTERCAL ?VT
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PLEASE DO ,1 <- #13 Jl^THoEL
DO ,1 SUB #1 <- #238 d`4@aoM
DO ,1 SUB #2 <- #112 jj"?#`cW
DO ,1 SUB #3 <- #112 E 5bo60z
DO ,1 SUB #4 <- #0 Z~Z+Yt;,9a
DO ,1 SUB #5 <- #64
`_H^k!^
DO ,1 SUB #6 <- #238 >dqeGM7Np>
DO ,1 SUB #7 <- #26 I45\xP4i
DO ,1 SUB #8 <- #248 Ry iS
DO ,1 SUB #9 <- #168 4\EvJg@Z.
DO ,1 SUB #10 <- #24 1'g{tP"d
DO ,1 SUB #11 <- #16 mnWbV\ VY
DO ,1 SUB #12 <- #158 W/|C
DO ,1 SUB #13 <- #52 h\$juIQa
PLEASE READ OUT ,1 9]TvLh3
PLEASE GIVE UP "t)|N
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Java Oe%jV,S |V
public class Hello
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{ r<L>~S>yb
public static void main(String[] args) ='|HUxFi
{ HxH=~B1"P
System.out.println("Hello, world!"); s_ N]$3'[E
} T~'9p`IW
} vdN0YCXG
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hFWK^]~ a
JSP Lg4I6 G
<% BHBMMjY5
out.print("Hello, world!"); *]_GFixi
%> 9ApGn!`
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/!Kl
MIXAL yD9<-B<)
TERM EQU 19 the MIX console device number P&@[ j0
ORIG 1000 start address ewcgg
START OUT MSG(TERM) output data at address MSG PNMf5'@m
HLT halt execution x2gP, p-
MSG ALF "MIXAL" a0ze7F<(
ALF " HELL" ~_Mz05J-\_
ALF "O WOR" :-kXZe
ALF "LD " IW'2+EGc
END START end of the program f@a@R$y
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Nuva r'ydjy
<..直接输出..> 5=.EngG
Hello, world! q#~]Hp=W5
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<..或者..> 'qg q8
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<. /RmHG
H!
// 不带换行 C=/nZGG
? "Hello, world!" [oQ&}3\XJ
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// 或者 grhwPnKl
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// 带换行 sR. ecs+
?? 'Hello, world!' /U%Xs}A)
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sm>Hkci%
k(;c<Z{?1
OCaml ^f,('0p->
let main () = XHlx89v7
print_endline "Hello world!";; vK\;CSk
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K>`7f]?H*e
Pascal )ccdfSe
program Hello; 4%I(Z'*Cx
begin E0 Vl}b
writeln('Hello, world!'); 7^J-5lY3S
end. ^Q?I8,4}
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Perl ?_F,HhQ
#!/usr/local/bin/perl 0F<O \
print "Hello, world!\n"; w^&TG3m1~
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PHP $[Fh|%\
<?php ntSPHK|'
print("Hello, world!"); sS $- PX
C
?> { [4Y(l1
o"x&F
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i}LWcD
Pike G'z&U?Ng
#!/usr/local/bin/pike 8P 3EQY-
int main() %Iv0<oU
{ URW'*\Xjb
write("Hello, world!\n"); .Wq`qF(;
return 0; oWpy^=D_
} S`"M;%T
U jC$Mi`O
yoj5XBM
PL/I r^?%N3
Test: procedure options(main); >Tld:
declare My_String char(20) varying initialize('Hello, world!'); 0=8.8LnN(
put skip list(My_String); V\kf6E
end Test; qb
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v5t`?+e
5|-(Ic
Prolog G2k r~FG
goal 4\?I4|{pC
write("hello,world!"). *Df|D/,WE
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i!
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Python d&