“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。 \(jSkrrD
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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》。 N5[QQtQ
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以下是用不同语言写成的Hello World程序的几个例子: dkJ+*L5
Ada )El#Ks5u
with Ada.Text_Io; use Ada.Text_Io; #sy)-xM
procedure Hello is E>xdJ
begin @rkNx@[~
Put_Line ("Hello, world!"); LJYFz=p"
end Hello; K~AQ) ]pJI
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汇编语言 ZeF PwW
#Zk6
x86 CPU,DOS,TASM %0@Jm)K^
MODEL SMALL Lm"a3Nb
IDEAL PMjqcdBzm
STACK 100H fZH:&EP
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DATASEG ~oz8B^7i;
HW DB 'Hello, world!$' fb4/LVg'J
e?3 S0}
CODESEG GM8Q#vc
MOV AX, @data ?YMBZ
MOV DS, AX oI!"F=?&6
MOV DX, OFFSET HW @ x .`z
MOV AH, 09H \FUMfo^
INT 21H `KtP;nG
MOV AX, 4C00H i\_LLXc
INT 21H tz8fZ*n
END $/lM %yXe
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x86 CPU,GNU/Linux,NASM ? )h8uf4
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 0%Le*C'yk
;Enter this into "hello.asm" then type: (5@H<c^6
;"nasm -f elf hello.asm" z{|0W!nHJ
;"ld hello.o -o hello" HE35QH@/`
;"./hello" >|c?ZqW
0zA;%oP
section .data ;data section declaration ImG8v[Q
E
msg db 'Hello World!',0AH ;<q2
len equ $-msg ;string length \i/HHP[%
~&<t++ g
section .text ;code section declaration =
global _start ;entry point (start of execution) IA<>+NS
_start: mov edx,len ;string length vQ*RrHG?c
mov ecx,msg ;string start `kJ)E;v;3
mov ebx,1 ;file handle: stdout Pjk2tf0j`
mov eax,4 ;sys_write ]E-3/r$_cO
int 80h ;kernel system call 1I`F?MT
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mov ebx,0 ;return value Arg/ge.y
mov eax,1 ;sys_exit 5q*s_acQ
int 80h ;kernel system call Ea&NJ]& g
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x86 CPU,Windows,MASM32 aPzn4}~/_
.386 YHO}z}f[!
.model flat,stdcall Zj!,3{jX^
option casemap:none p@kRo#~l
;Include 文件定义 $cIaLq
include windows.inc {?`7D:]`^
include user32.inc =y-yHRC7
includelib user32.lib .SjJG67OyA
include kernel32.inc F \ls]luN
includelib kernel32.lib ]:#=[CH
;数据段 r:$tvT*
.data \?]U*)B.r
szCaption db 'A MessageBox!',0 )2RRa^=&
szText db 'Hello,world!',0 cz,QP'g
;代码段 C 2nmSXV
.code {j9TzR
start: sWo}Xq#
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK <#ON
invoke ExitProcess,NULL ;YR/7
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Gn=b_!
end start 4P[MkMoC
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AWK {daX?N|V
BEGIN { print "Hello, world!" } #%Bt!#
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BASIC m_*wqNFA6
传统版BASIC(例如GWBASIC): z`IW[N7Z
:Bmn<2[Y;
10 PRINT "Hello, world!" /M%>M]
20 END ,IyQmN y
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或在提示符输入: g%l ,a3"
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?"Hello, world!":END 7H)$NG<U$
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现代版BASIC(例如Quick BASIC): pe
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Print "Hello, world!" u0Wt"d-=
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以下的语句在Quick BASIC中同样有效: @Suz-j(H
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? "Hello,world!" ?VNtT/
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V. &F%(L
BCPL /Ne#{*z)hO
GET "LIBHDR" GZ~Tl0U
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LET START () BE f-enF)z
$( 84QOW|1
WRITES ("Hello, world!*N") a$|U4Eqo
$) p/-du^:2
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Befunge [(@K;6o
"!dlrow olleH">v -y-}g[`
, 3A!a7]fW
^_@ > O?WRCB
sNDo@u7
5P\>$N1p
Brainfuck w\acgQ^%e
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 7.<jdp
+++++++++++++++.>.+++.------.--------.>+.>. a2B71 RT~
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C &N^~=y^`C'
#include <stdio.h> _ l|%~
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int main(void) &^"Ru?MK
{ @v%Kw e1Q
printf("Hello, world!\n"); YbU8 xq
return 0; 9!jPZn
} OF7hp5
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C++ AB'+6QU9k
#include <iostream> 4CF;>b
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int main() #@B"E2F
{ =\< 7+nv
std::cout << "Hello, world!" << std::endl; _li3cXE
return 0; 'hjEd.
} H ni^S
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C++/CLI H7X-\K 1w
int main() pq{`WgA^
{ @!P2f
System::Console::WriteLine("Hello, world!"); <2U@O`
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} { KWVPeh
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C# (C Sharp) 23):OB>S`
class HelloWorldApp !G3AD3
{ gsyOf*Q$
public static void Main() s$Y>nH~T
{ gTho:;q7a
System.Console.WriteLine("Hello, world!"); P+j=]Yg
} }*6BaB
} =IC.FT}
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COBOL o^@"eG$,
IDENTIFICATION DIVISION.
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PROGRAM-ID. HELLO-WORLD. j9NF|
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ENVIRONMENT DIVISION. 5*$yY-A
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DATA DIVISION. k4ti#3W5eG
Bz ;r<Kn
PROCEDURE DIVISION. n4kq=Z%
DISPLAY "Hello, world!". ^!1!l-
STOP RUN. ">bhxXeiN
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Common Lisp XZIapT
(format t "Hello world!~%") '|IcL1c=I
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;:IL\*1I
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DOS批处理 -$Z1X_~;)<
@echo off !rUP&DA
echo "Hello, world!" 6YM X7G]
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Eiffel 4`,(*igEv
class HELLO_WORLD Rml'{S
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creation kG>jb!e@(
make ;MS.ag#
feature Pzso^^g
make is ^j\LB23
local }emUpju<C
io:BASIC_IO 7_\sx7h{3
do z)3TB&;
!!io 1q7&WG
io.put_string("%N Hello, world!") <VxA&bb7c
end -- make P-\f-FS
end -- class HELLO_WORLD -+WAaJ(b
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i|^Q{3?o#
Erlang !UT'4Fs
-module(hello). ;@ePu
-export([hello_world/0]). b&rBWp0#
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hello_world() -> io:fwrite("Hello, World!\n"). /whaY4__O\
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Forth 8Rj5~+5
." Hello, world!" CR ^@^8iZ
;\RVC7
c[Fc3
Fortran i6if\B
WRITE(*,10) G)7U&B
10 FORMAT('Hello, World!') 60+ zoL'
STOP 6^b)Q(Edut
END 64/ZfXD
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HTML O)dnr8*
<HTML> 6 eSo.@*l
<HEAD> CQWXLQED>
<TITLE> Hello World! </TITLE> DsHF9Mn
</HEAD> D]@(LbMG4
<BODY> J8:s=#5
<p>Hello World!</p> C7%R2>}?f
</BODY> tRoSq;VrS
</HTML> At.&$ t
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f-F=!^.
INTERCAL +fVv H
PLEASE DO ,1 <- #13 1bV
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DO ,1 SUB #1 <- #238 D:@W*,
DO ,1 SUB #2 <- #112 #`SAc`:n
DO ,1 SUB #3 <- #112 +M=h+3hw](
DO ,1 SUB #4 <- #0 {>ba7-Cy+y
DO ,1 SUB #5 <- #64 {"wF;*U.V
DO ,1 SUB #6 <- #238 R{@saa5I(>
DO ,1 SUB #7 <- #26 UdO8KD#r3
DO ,1 SUB #8 <- #248 SP%X@~d
DO ,1 SUB #9 <- #168 :xsZz$
DO ,1 SUB #10 <- #24 [PIMG2"G
DO ,1 SUB #11 <- #16 i<ES/U\
DO ,1 SUB #12 <- #158 UPfE\KN+p#
DO ,1 SUB #13 <- #52 `LkrG9KV{
PLEASE READ OUT ,1 Dmh$@Uu#F
PLEASE GIVE UP [edF'7La
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Java {I{ 0rV
public class Hello 6Ryc&z5
{ |ty&}'6C
public static void main(String[] args) )U\i7[k>
{ ]ae(t`\l^
System.out.println("Hello, world!"); !`{?qQ[=
} s$#64"F
} &[d'g0pF
p cLKE
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JSP \lK?f] qJq
<% L~&S<5?
out.print("Hello, world!"); ,Q"'q0hM=
%> k[x-O?$O@
K&[0`sH!
`:C1Wo^<
MIXAL RE t&QP
TERM EQU 19 the MIX console device number x]7:MG$
ORIG 1000 start address Vl^x_gs#_]
START OUT MSG(TERM) output data at address MSG &;$uU
HLT halt execution 2U./
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MSG ALF "MIXAL" =zn'0g,J4
ALF " HELL" dy6zrgxygP
ALF "O WOR" ?nc:bC
ALF "LD " =CQfs6np:N
END START end of the program VD.TosVeWo
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Nuva ?xaUWD
<..直接输出..> ;2kQ)Bq"
Hello, world! 2VV>?s
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<..或者..> iF`_-t/k
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<. nFni1cCD
// 不带换行 &eV5#Ph
? "Hello, world!" ["nWIs[h
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// 或者 U.TZd"
_f!ko<52
// 带换行 I[%IW4jJ
?? 'Hello, world!' xC<