“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。 ,6a'x~y<r
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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》。 [Y'Xop6G
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以下是用不同语言写成的Hello World程序的几个例子: WNd(X}
Ada RMLs(?e
with Ada.Text_Io; use Ada.Text_Io; DJrA@hm/Y
procedure Hello is s'} oVx]
begin gtCd#t'(V
Put_Line ("Hello, world!"); q7m-} mBN~
end Hello; !y4o^Su[
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汇编语言 lg1?g)lv
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x86 CPU,DOS,TASM n6L}#aZG
MODEL SMALL lv$tp,+
IDEAL G+\2Aj
STACK 100H :j?Lil%R
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DATASEG c1MALgK~}\
HW DB 'Hello, world!$' RE*UIh*O
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CODESEG pmQ9iA@=
MOV AX, @data (zgXhx_!D
MOV DS, AX 9.1%T06$
MOV DX, OFFSET HW fS!%qr
MOV AH, 09H q1NAKcA<U
INT 21H BS+N
MOV AX, 4C00H tM{t'WU
INT 21H eCk}B$ 2
END NsWyxcty
iSIj ?.
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x86 CPU,GNU/Linux,NASM ";s?#c
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax).
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;Enter this into "hello.asm" then type: @uT\.W:Q2
;"nasm -f elf hello.asm" 4HkOg)a
;"ld hello.o -o hello" f&{2G2O%
;"./hello" sl/# 1B
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section .data ;data section declaration U.?,vw'aai
msg db 'Hello World!',0AH /Pi{Mv eZM
len equ $-msg ;string length =AZ>2P
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section .text ;code section declaration ;'R{b$B;|
global _start ;entry point (start of execution) u]"oGJj1
_start: mov edx,len ;string length JsVW:8QO~
mov ecx,msg ;string start PN0:,.4
mov ebx,1 ;file handle: stdout ic?6p
mov eax,4 ;sys_write qBKIl=
ne
int 80h ;kernel system call ETjlq]@j
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mov ebx,0 ;return value 9<\wa/#
mov eax,1 ;sys_exit i(L;1 `
int 80h ;kernel system call obaJT"1
ha3 Qx
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x86 CPU,Windows,MASM32 X`^9a5<"
.386 6^UeEmjc
.model flat,stdcall ).-B@&Eu%
option casemap:none 0'z$"(6D
;Include 文件定义 !*+~R2&b
include windows.inc Yz.[CmdX
include user32.inc SvDVxK
includelib user32.lib GG%j+Ed
include kernel32.inc *4]I#N
includelib kernel32.lib EV2whs2g
;数据段 F/&Z1G.
.data ",`fGu )
szCaption db 'A MessageBox!',0 y=5s~7]
szText db 'Hello,world!',0 x1Z?x,-D"
;代码段 BE}lzn=sF
.code uK}k]x\z
start: N<Ti[Q]G
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !t~S.`vF
invoke ExitProcess,NULL tY%c-m
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> zOWbdd_zl
end start qK;n>BTe
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AWK rv:,Os_
BEGIN { print "Hello, world!" } c?>Q!sC
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BASIC sT'wps 2
传统版BASIC(例如GWBASIC): 1&Nk
\7*9l%
10 PRINT "Hello, world!" f>-OwL($P
20 END rc9 \
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或在提示符输入: /Q})%j1S0
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?"Hello, world!":END J3y5R1?EP
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现代版BASIC(例如Quick BASIC): yxLGseD
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Print "Hello, world!" '1^\^)&q
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以下的语句在Quick BASIC中同样有效: C4TJS,!1rH
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? "Hello,world!" :}e*3={4
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u{tjB/K&
BCPL .2[>SI
GET "LIBHDR" ) dwPD
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LET START () BE y%`^*E&
$( 6hAeLlU1
WRITES ("Hello, world!*N") r3_@ L>;
$) lNls8@
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Befunge Pm7,Nq)<>n
"!dlrow olleH">v mNWmp_c,1
, @H1pPr
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Brainfuck Y-gjX$qGo
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< kO~xE-(=
+++++++++++++++.>.+++.------.--------.>+.>. n M,m#"AI
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C kIP~XV~
#include <stdio.h> 6wIv7@Y
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int main(void) dkLc"$(O
{ *N[.']#n
printf("Hello, world!\n"); \,ir]e,1
return 0; Y>wpla[kUq
} o5i?|HJ
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C++ ZRsDn
#include <iostream> $9M>B<]
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int main() LN" bGe
{ Bx j6/a7Xd
std::cout << "Hello, world!" << std::endl; 573wK~9oMh
return 0; aq0J }4U
} )}]<o
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C++/CLI +\\*Iy'xK
int main() e7>)Z
{ ()}O|JL:K
System::Console::WriteLine("Hello, world!"); xJJlV P
} y? )v-YGu
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C# (C Sharp) TB*g$*
class HelloWorldApp )PB&w%J
{ {KdC51"Nv
public static void Main() QE=Cum
{ *{)[:;
System.Console.WriteLine("Hello, world!"); E)NH6~
} /n/U)!tp
} W6E9
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COBOL v>~ottQ|
IDENTIFICATION DIVISION. lk1c2
PROGRAM-ID. HELLO-WORLD. 05=O5<l
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ENVIRONMENT DIVISION. 0$":W
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DATA DIVISION. ;7K5Bo
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PROCEDURE DIVISION. 9'Pyo`hJ#U
DISPLAY "Hello, world!". n<"?+bz"<
STOP RUN. J=Ak+J
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Common Lisp de[c3!#1d
(format t "Hello world!~%") Q`,D#V${D
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DOS批处理 E`=y9r*Z
@echo off gt';_
echo "Hello, world!" 9c=Y+=<
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os/~6
Eiffel vD[@cm
class HELLO_WORLD *jTr
#CW]70H`
creation jE&kN$.7j
make |Rhx&/
feature Ty*ec%U9F
make is E@JxY
local 0u'4kF!P!
io:BASIC_IO G|4 vnIS
do "of (,p
!!io O->i>d
io.put_string("%N Hello, world!") QKwWX_3%Z]
end -- make uQ vW@Tt
end -- class HELLO_WORLD Gyjx:EM
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Erlang Z,lUO.
-module(hello). ":Kn@S'{(
-export([hello_world/0]). }2:bYpYQ
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hello_world() -> io:fwrite("Hello, World!\n"). GH7{_@pv8
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Forth PJAE~|a
." Hello, world!" CR j<szQ%tJlI
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Fortran 5caYA&R
WRITE(*,10) p87s99
10 FORMAT('Hello, World!') T
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STOP eG"iJ%I
END q&<#)#+
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HTML R`76Ae`R8
<HTML> H'q&1^w)
<HEAD> Dr6Br<yi
<TITLE> Hello World! </TITLE> c~5#)AXMT
</HEAD> ?uU0NKZA
<BODY> \S=!la_T@m
<p>Hello World!</p> Pl}}!<!<z
</BODY> mIFS/C
</HTML> 7v?tSob:b
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INTERCAL @tEVgyN
PLEASE DO ,1 <- #13 E;VB oN [
DO ,1 SUB #1 <- #238 vEtogkFA"
DO ,1 SUB #2 <- #112 qt^%jIv
DO ,1 SUB #3 <- #112 |GdA0y\v*}
DO ,1 SUB #4 <- #0 +A~lPXAXW
DO ,1 SUB #5 <- #64 @
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DO ,1 SUB #6 <- #238 Pu/0<