“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。 VrL>0d&d
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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》。 zi 14]FWo
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以下是用不同语言写成的Hello World程序的几个例子: 83(P_Y:
Ada t`3T_t Y
with Ada.Text_Io; use Ada.Text_Io; qO'5*d;!d
procedure Hello is ~$obcW1
begin -Af`AX
Put_Line ("Hello, world!"); ] ]-0RJ=S?
end Hello; '(:J|DN
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MX_a]$\:n
汇编语言 l;FgX+)
R20GjWy=
x86 CPU,DOS,TASM ~
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MODEL SMALL bg. KkJMrR
IDEAL {v'Fg
STACK 100H /[T8/7;_l
TBp5xz`
DATASEG #gT^hl5/
HW DB 'Hello, world!$' %),O9*[9
pjn%CR`;
CODESEG Mo=-P2)>lt
MOV AX, @data srA~gzF
MOV DS, AX !{0!G
MOV DX, OFFSET HW z,P7b]KVe
MOV AH, 09H 4hz,F/ I
INT 21H ?m^7O_1
MOV AX, 4C00H p=T\3_q
INT 21H c$z_Zi!g#
END @_nhA/rlc
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x86 CPU,GNU/Linux,NASM ![n`n(oN
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). FaM~ 56Pa
;Enter this into "hello.asm" then type: iB_j*mX]
;"nasm -f elf hello.asm" ]bSt[
;"ld hello.o -o hello" e5]0<s$
;"./hello" 7FFYSv,[:
}7v2GfEkM
section .data ;data section declaration Q{-r4n|b
msg db 'Hello World!',0AH jX,~iZ_B
len equ $-msg ;string length fs12<~+z
=h!m/f^x
section .text ;code section declaration oOz6Er[KO
global _start ;entry point (start of execution) =Z$6+^L
_start: mov edx,len ;string length >D aS*r
mov ecx,msg ;string start 2p ,6=8^v
mov ebx,1 ;file handle: stdout [: j_Y3-9
mov eax,4 ;sys_write \2b9A'd>
int 80h ;kernel system call %>z}P&Yz
gf>5xf{M
mov ebx,0 ;return value ;zG|llX
mov eax,1 ;sys_exit R6Lr]H
int 80h ;kernel system call > `M\xt
\H(,'w7H
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x86 CPU,Windows,MASM32 gk`.8o
.386 s1q d/
.model flat,stdcall S22 ;g
option casemap:none uI wyan-
;Include 文件定义 lEs/_f3;A
include windows.inc 3!x)LUWfWY
include user32.inc )9->]U@
includelib user32.lib de=T7,G#
include kernel32.inc LlqhZetS
includelib kernel32.lib .&dcJh*O+
;数据段 fok#D>q
.data K-5)Y+| >
szCaption db 'A MessageBox!',0 &x #5-O'
szText db 'Hello,world!',0 >?KyPp
;代码段 KS_d5NvYl
.code 8uiQm;W
start: PGGJpD?
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK JTJ4a8DE
invoke ExitProcess,NULL mt'#j"mU
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kA0^~
end start Lf9h;z>#
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AWK yvvR%]!.
BEGIN { print "Hello, world!" } ER+[gT1CQ
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v\C+G[MV7
BASIC E{J;-+t
传统版BASIC(例如GWBASIC): F\;1:y~1
tWuQKN`_
10 PRINT "Hello, world!" qE[}Cf]X
20 END $Izk]o;X~
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或在提示符输入: hZy*E [i
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?"Hello, world!":END [<t*&Kr+o
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现代版BASIC(例如Quick BASIC): N1rrKyL!$
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Print "Hello, world!" V
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以下的语句在Quick BASIC中同样有效: ^M"g5+q
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? "Hello,world!" cW\ 7yZh
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J2rH<Fd[up
BCPL c9@*
GET "LIBHDR" kQ+5pFo3
HZNX1aQ|Q#
LET START () BE
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$( 2+HiaYDZ
WRITES ("Hello, world!*N") #]2u!ama
$) X+iULr.^`~
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y5I7pbe
Befunge "2-TtQV!
"!dlrow olleH">v p-Ju&4fS
, 2bmppDk
^_@ _4+1c5Q!
~n?U{
RmH
5:wf"3%%
Brainfuck 5VfP@{
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< :([,vO:
+++++++++++++++.>.+++.------.--------.>+.>. _19k@a
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C %?seX+ne
#include <stdio.h> N~Gh>{N
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int main(void) jp|wc,]!
{ ^H'#*b0u
printf("Hello, world!\n"); K^+B"
return 0; Q5ux**(Wr
} _B2t|uQ
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%zGPF
C++ Rp#SqRy`
#include <iostream> =g ]C9'I3
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int main() |zf||ju
{ Z6I!4K
std::cout << "Hello, world!" << std::endl; H={,zZ11{
return 0; r?$\`,;
} lWR
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IKt9=Tx
C++/CLI D~<GVp5T
int main() fN9hBC@
{ 2-]m#}zbP
System::Console::WriteLine("Hello, world!"); {)+/w"^.
} >z2{D7
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c{-
C# (C Sharp) qQb8K+ t
class HelloWorldApp ,F1$Of/'@\
{ W $y?~2
public static void Main() "H({kmR
{ x-"7{@lz
System.Console.WriteLine("Hello, world!"); N4Ym[l
} eWFlJ;=
} Rj8l]m6U9
\%K6T)9
9X-DR
COBOL eK`tFs,u
IDENTIFICATION DIVISION. g$+3IVq&
PROGRAM-ID. HELLO-WORLD. Q{%ow:;s*
lm+wjhkN
ENVIRONMENT DIVISION. .p&M@h
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DATA DIVISION. yfU1;MI
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PROCEDURE DIVISION. E^rN)
DISPLAY "Hello, world!". W uQdz&s>
STOP RUN. BjShK+Y
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+ 7Z%N9
Common Lisp NIgt"o[I
(format t "Hello world!~%") giPyo"SD
V; ChrmE
:%0Z
DOS批处理 U_:/>8})d
@echo off R\XJ
echo "Hello, world!" %c&h:7);
@?t) UE
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Eiffel g3y44GCV
class HELLO_WORLD KMZ% 1=a
S_)va#b#
creation Dx8^V%b
make y(%6?a @
feature )t|M)z J
make is ].$N@tC
local MQI6e".
io:BASIC_IO //`X+[bMG
do ~ >6(@~6
!!io !#'*@a
io.put_string("%N Hello, world!") 6(eyUgnb
end -- make )!0>2,R1
end -- class HELLO_WORLD U+\\#5$
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Erlang Ts.61Rx
-module(hello). oRCj]9I$
-export([hello_world/0]). XX+4X*(o
^mH^cP?/
hello_world() -> io:fwrite("Hello, World!\n"). \=w|Zeu{l
^JH 4:
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Forth +] FdgmK:
." Hello, world!" CR M]oaWQu
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&n['#7 <(!
Fortran WXJ%bH
WRITE(*,10) se_1wCYz
10 FORMAT('Hello, World!') 1"i/*}M
STOP Zb@PwH4
END Mq-;sPsFP
-c Mqq$
Obbjl@]
HTML %/4ChKf!VR
<HTML> 0PZpE
"$X
<HEAD> At"@`1n_u'
<TITLE> Hello World! </TITLE> b8Y-!]F
</HEAD> l@':mX3xd
<BODY> 59GS:
<p>Hello World!</p> Z[ys>\_To
</BODY> =ove#3
</HTML> &)1+WrU
KZ&{Ya
SDZ/rC!C
HQ9+ j2V^1
H WxFVbtw
HG{OkDx]fl
2|m461
INTERCAL xse8fGs
PLEASE DO ,1 <- #13 :Oxrw5`=
DO ,1 SUB #1 <- #238 h(ZZ7(ue
DO ,1 SUB #2 <- #112 "1Vuf<?C
DO ,1 SUB #3 <- #112 g%Eb{~v
DO ,1 SUB #4 <- #0 0ZTT^2R
DO ,1 SUB #5 <- #64 y%f'7YZ4
DO ,1 SUB #6 <- #238 T$!.
:v
DO ,1 SUB #7 <- #26 d7A vx
DO ,1 SUB #8 <- #248 (V#5Cs,o:
DO ,1 SUB #9 <- #168
ym^
DO ,1 SUB #10 <- #24 4/cUd=>Z
DO ,1 SUB #11 <- #16 6,| !zaeS
DO ,1 SUB #12 <- #158 |%Pd*yZA
DO ,1 SUB #13 <- #52 CnN PziB
PLEASE READ OUT ,1
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PLEASE GIVE UP `C$.
!2=<MO
z`XX[9$qm
Java F8KSB"!NR
public class Hello `-IX"rf
{ lx(kbSxF
public static void main(String[] args) :hC+r=!I
{ 4+Wti!s
System.out.println("Hello, world!"); -uX): h!
} }Dp/K4
} |<gYzbq
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*6<<6f`(
JSP ,Tjc\;~%
<% _ ZMoPEW
out.print("Hello, world!"); Q3T@=z2j%
%> g{RVxGE7
VB o=*gn,$
C8ek{o)%W
MIXAL DgW*Br8<
TERM EQU 19 the MIX console device number Y'H|Tk^`
ORIG 1000 start address r1ao=N
START OUT MSG(TERM) output data at address MSG 2M@,g8O+B=
HLT halt execution ~qT5F)$B-
MSG ALF "MIXAL" b"iPuN!p
ALF " HELL" ;<hLy(@
ALF "O WOR" <*oTVl4fS
ALF "LD " lk;4l Z
END START end of the program m7!Mstu
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Yv>kToa\^
Nuva OO#_0qK
<..直接输出..> y\k#83aU|
Hello, world! opqY@>Vh&
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<..或者..> 8#L
V
oR
vY)5<z&
<. *3
8
u ~n
// 不带换行 n<3qr}ZG^
? "Hello, world!" qjDt6B^RO
wNl{,aH@
// 或者 -c4g;;%
mBN+c9n/
// 带换行 =S#9\W&