“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。 5:6]ZFW
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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》。 %J?"ZSh
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以下是用不同语言写成的Hello World程序的几个例子: Ua](o H
Ada 6d%'>^`(o-
with Ada.Text_Io; use Ada.Text_Io; A"W}l)+X
procedure Hello is :f|X$>
b
begin S-D=-{@
Put_Line ("Hello, world!"); HaiaDY)
end Hello; " +n\0j;
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汇编语言 gyx4= 'Q
FaVeP%v
x86 CPU,DOS,TASM yDn8{uI
MODEL SMALL 6~b]RZe7
IDEAL 4Bc<
STACK 100H 6*Y>Y&sea
++ZtL\h{7
DATASEG F>!gwmn~
HW DB 'Hello, world!$' '<v_YxEn
`*to(
)
CODESEG 7x ?2((
MOV AX, @data JRT,%;*,
MOV DS, AX QTKN6P
MOV DX, OFFSET HW pS
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MOV AH, 09H ^>H+#@R
INT 21H ))z1T 8
MOV AX, 4C00H {6uh Ub
INT 21H sH}q &=
END KE
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x86 CPU,GNU/Linux,NASM MlBw=Nr
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). us,1:@a)a
;Enter this into "hello.asm" then type: <GthJr>1D
;"nasm -f elf hello.asm" 5/{";k)L+
;"ld hello.o -o hello" $F,&7{^
;"./hello" Edi`x5"l
*wOuw@09
section .data ;data section declaration 1G6MO
msg db 'Hello World!',0AH b5v6Y:f&fK
len equ $-msg ;string length [Q+qu>&HB7
y?1<7>L5~
section .text ;code section declaration 6QC=:_M;
global _start ;entry point (start of execution) 5_}e?T&s
_start: mov edx,len ;string length 8iDg2_l`G
mov ecx,msg ;string start v1E=P7}\{s
mov ebx,1 ;file handle: stdout AvNU\$B4aG
mov eax,4 ;sys_write H^e0fm
int 80h ;kernel system call ggR--`D[
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mov ebx,0 ;return value nfV32D|3
mov eax,1 ;sys_exit 7 ?O~3
int 80h ;kernel system call ;N FTdP
er[%Nt+99
5r$X
x86 CPU,Windows,MASM32 ps*dO
.386 ERE1XOe=D
.model flat,stdcall ?<#2raH-
option casemap:none C;3>q*Am4
;Include 文件定义 xq2
,S
include windows.inc 5}/TB_W7j
include user32.inc <R?_Yjsw
includelib user32.lib Po:)b
include kernel32.inc kZ0|wML8
includelib kernel32.lib Du3nK"-g
;数据段 j+_pF<$f:
.data b(Ev :
szCaption db 'A MessageBox!',0 u*<G20~A
szText db 'Hello,world!',0 bS9<LQ*
;代码段 y@L-qO+{&
.code nv9kl Q@
start: =eXJZPR
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ~alC5|wCUQ
invoke ExitProcess,NULL Z!qH L$
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> u{o!j7
end start &$vW
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AWK Uv-xP(X
BEGIN { print "Hello, world!" } vIoV(rc+
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r="wd
BASIC E,#J\)'z
传统版BASIC(例如GWBASIC): |Ki\Q3O1
`W8A*
10 PRINT "Hello, world!" l1RpG"
20 END =/k*w#j
%mhnd):
或在提示符输入: ?T\m
V}
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?"Hello, world!":END WrR97]7t
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现代版BASIC(例如Quick BASIC): O^D$ ~
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Print "Hello, world!" QPi]5z?
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以下的语句在Quick BASIC中同样有效: w/KCuW<
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? "Hello,world!" p2|BbC\N
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r$~w3yN)v
BCPL uLw$`ihw
GET "LIBHDR" MSmvQ
p7"o:YSQ
LET START () BE QY,.|
$( C^@~
WRITES ("Hello, world!*N") 3
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$) C(:tFuacpw
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!O=J8;oLk
Befunge 8F(_V qu
"!dlrow olleH">v eD0Rv0BV^
, Y&O<A8=8
^_@ :@TfhQV_=Q
V`KXfY
4#?OxvH
Brainfuck mAk@Q|u
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< %Dg]n4f
+++++++++++++++.>.+++.------.--------.>+.>. &Bbs\
;
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C eKlh }v
#include <stdio.h> l>RW&C&T
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int main(void) L;=<d
{ <_@ S@t)
printf("Hello, world!\n"); .(tga&]
return 0; bz[+g,e2oA
} !2WRxM
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L$7
NT}L
C++ DfFsCTu
#include <iostream> }d2]QD#O
w!7f*
int main() >dol
{ Nhv~f0
std::cout << "Hello, world!" << std::endl; %|[+\py$Q
return 0; ~S)o('
} 1}mIzrY
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C++/CLI ~Rx[~a
int main() (eI'%1kS<
{ v;X'4/M
System::Console::WriteLine("Hello, world!"); &[}T41
} k#TonT
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C# (C Sharp) _NAKVzo-
class HelloWorldApp \+mc
{ Vd[[<
public static void Main() ba^cw}5
{ "gXz{$q
System.Console.WriteLine("Hello, world!"); k/W$)b:Of`
}
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} dV<|ztv
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COBOL PZ~uHX_d>
IDENTIFICATION DIVISION. 0n+Wv@/
PROGRAM-ID. HELLO-WORLD. yzW9A=0A)
pS
vDH-
ENVIRONMENT DIVISION. Y9ueE+6
KFBo1^9N
DATA DIVISION. $Ml/=\EHOg
E_]L8UC;m
PROCEDURE DIVISION. ~M%r.WFpA
DISPLAY "Hello, world!". NvWwj%6]
STOP RUN. ymSGB`CP
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Ub%+8M
Common Lisp uBw1Xud[YI
(format t "Hello world!~%") #q40 >)]
MCU{@\?Xf
ipnvw4+
DOS批处理 A@#9X'C$^
@echo off "0Uh(9Fv
echo "Hello, world!" rIp84}
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Eiffel g
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class HELLO_WORLD ,T?8??bZ
a(s}Ec${Z
creation ;|e {J$
make }Og zSnR
feature &}31q`
make is f
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local oHdss;q
io:BASIC_IO mw";l$Aq}
do !1K<iz_8
!!io tpj({
io.put_string("%N Hello, world!") IwhZzw
w
end -- make gP1~N^hke]
end -- class HELLO_WORLD Y15KaoK?
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Dp!3uR']p
Erlang ww82)m8
-module(hello). {C Qo}@.7
-export([hello_world/0]). |5S/h{gq
1BUdl=o>S
hello_world() -> io:fwrite("Hello, World!\n"). iX qB-4"
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1C(6.7l
Forth ~>zml1aJ6
." Hello, world!" CR #=UEx
w~@.&
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Fortran ]8KAat~J
WRITE(*,10) N r5
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10 FORMAT('Hello, World!') rMAH YH9
STOP betN-n-
END S]iMZ \I/
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HTML 1xg^;3m2
<HTML> }q9;..oL
<HEAD> {ve86 POY
<TITLE> Hello World! </TITLE> n-[J+DdB
</HEAD> 7q?u`3l
<BODY> vAiNOpz#
<p>Hello World!</p> "f\2/4EIl
</BODY> c'?4*O
</HTML> AEaT
Z)Y--`*
G4->7n N
HQ9+ A,D67G<v`
H {bnNY
r(NfVQF
N+)4]ir>
INTERCAL D7cOEL<
PLEASE DO ,1 <- #13 9{@ #tx
DO ,1 SUB #1 <- #238 c\~H_ ~F
DO ,1 SUB #2 <- #112 T677d.zaT
DO ,1 SUB #3 <- #112 }ny,Nl
DO ,1 SUB #4 <- #0 6dQa|ACX_
DO ,1 SUB #5 <- #64 qR0V\OtgY~
DO ,1 SUB #6 <- #238 rhY>aj
DO ,1 SUB #7 <- #26 GgkljF@{}
DO ,1 SUB #8 <- #248 3`_jNPV1
DO ,1 SUB #9 <- #168 9frP`4<)
DO ,1 SUB #10 <- #24 "8|y
DO ,1 SUB #11 <- #16 V3baEy>=z
DO ,1 SUB #12 <- #158 H6?ZE
DO ,1 SUB #13 <- #52 J7X-=E D
PLEASE READ OUT ,1 JPL8fX-w
PLEASE GIVE UP p%e!&:!
2f\;#-
'8`{u[:
Java fU^B
3S6X
public class Hello W Da;wt
{ 5 (bG
public static void main(String[] args) ,?i^i#Wqzg
{ 'Ht$LqG
System.out.println("Hello, world!"); r4caIV
} l=*^FK]L`
} M>J8J*
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B[7|]"L@
JSP Lu\]]m
<% +:1ay^YI
out.print("Hello, world!"); c.jq?Q k
%> \V`O-wcJ]S
YfUdpa0
cAC2Xq
MIXAL Rt~Aud[
TERM EQU 19 the MIX console device number -H~g+i*J
ORIG 1000 start address , M$*c
START OUT MSG(TERM) output data at address MSG ]YkF^Pf!v
HLT halt execution ] ,Wh]q
MSG ALF "MIXAL" '"QC^Joz
ALF " HELL" 8,2l >S
ALF "O WOR" AWCzu5ve
ALF "LD " Mh'QD)28c
END START end of the program t+Mr1e
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<..直接输出..> (FZL>
Hello, world! k6rX/ocu
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<..或者..> I^/Ugu
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<. ba|x?kz
// 不带换行 <