“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。 )+xHv
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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》。 CH3bpZv
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以下是用不同语言写成的Hello World程序的几个例子: _/
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Ada [j^c&}0
with Ada.Text_Io; use Ada.Text_Io; _
BUD~'Q5
procedure Hello is qD/X% `>Q
begin .B|a.-oA4
Put_Line ("Hello, world!"); M<"H1>q@
end Hello; e[AwR?=
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汇编语言 ?3)
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7o5~J)qIC
x86 CPU,DOS,TASM JK@"
&
MODEL SMALL
;'g.%
IDEAL (D5.NB%@
STACK 100H _pS!sY~d
E A8>{}Z*
DATASEG L-v-KO6
HW DB 'Hello, world!$' c (Gl3^
Q N$Ac.F
CODESEG o#ajBOJ
MOV AX, @data `tb@x ^
MOV DS, AX T nG=X:+=
MOV DX, OFFSET HW KeiPo KhZi
MOV AH, 09H :VEy\ R>W
INT 21H xp<p(y8e1d
MOV AX, 4C00H DeTD.)pS
INT 21H &z"sT*3
END |w7D&p$
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:P1/kYg
x86 CPU,GNU/Linux,NASM ^w*$qzESy
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Zc Y* TGx
;Enter this into "hello.asm" then type: 21\t2<"
;"nasm -f elf hello.asm" !O-9W=NJ
;"ld hello.o -o hello" Skn2-8;10
;"./hello" -6./bB g
5o dtYI%L
section .data ;data section declaration n:P5m9T
msg db 'Hello World!',0AH jLLZZPBK
len equ $-msg ;string length Mm'q4DV^
{F~:86z(g
section .text ;code section declaration f<T"# G$5
global _start ;entry point (start of execution) gvx
{;e
_start: mov edx,len ;string length GE0,d
mov ecx,msg ;string start etHkyF
mov ebx,1 ;file handle: stdout A_vf3 *q
mov eax,4 ;sys_write x\m?* 5p
int 80h ;kernel system call r-+S^mOE]
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mov ebx,0 ;return value wK[Xm'QTPJ
mov eax,1 ;sys_exit xf?6_=
int 80h ;kernel system call Q:4euhz*
qr~=S
MJ+]\(
x86 CPU,Windows,MASM32 ,9:0T LLR
.386 `p.O
.model flat,stdcall PN&;3z Z
option casemap:none jdF~0#vH
;Include 文件定义 ~>(
N<:N
include windows.inc R#QcQx
include user32.inc WO=,NQOw
includelib user32.lib i[wEH1jR
include kernel32.inc Vg+jF!\7
includelib kernel32.lib iKu~o.yy
;数据段 @aC2]
.data [x.DwU%S
szCaption db 'A MessageBox!',0 &oyj8
szText db 'Hello,world!',0 Ef2#}%>
;代码段 o/U"'FP
.code ~YX!49XfHh
start: ^8#;>+7R
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK D\H)uV`
invoke ExitProcess,NULL D`G ;kp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> XtV=Gr8"
end start c!{]Z_d\
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AWK jcT
BEGIN { print "Hello, world!" } CAPPOh
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N){/#3
BASIC R3dCw:\O+Z
传统版BASIC(例如GWBASIC): FojsI<
#
[0>wEq
10 PRINT "Hello, world!" FLI0C
20 END q ["T6
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或在提示符输入: 0y"Ra%Y
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?"Hello, world!":END y,`SLgBID
re `B fN
现代版BASIC(例如Quick BASIC): !PFc)J
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Print "Hello, world!" {J}Zv5
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以下的语句在Quick BASIC中同样有效: UUF;Q0X
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? "Hello,world!" ;6?VkF
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}
BCPL 4l6+8/Y
GET "LIBHDR" Z3)l5JG)
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LET START () BE QF7iU@%-
$( F^v <z)x
WRITES ("Hello, world!*N") Zu$30&U
$) LJ+fZ
N
@\=%M^bx
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Befunge B tZycI
"!dlrow olleH">v uH 6QK\
, 0PK*ULwSN
^_@ UqP %S$9
#hOAG_a,
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Brainfuck {M5[gr%
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< W+'|zhn
+++++++++++++++.>.+++.------.--------.>+.>. #Zm%U_$<
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.!\NM&E
C %Tn0r|K
#include <stdio.h> nI-^
Ier0F7]I
int main(void) DKjkO5R\
{ ZS-O,[
printf("Hello, world!\n"); 5F8sigr/h
return 0; bOi`JJ^
} ~t $zypw
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C++ N*C"+2
#include <iostream> kc3dWWPe
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int main() Z.Sq5\d
{ kO]],Vy`
std::cout << "Hello, world!" << std::endl; H'L~8>
return 0; )<D(Mb2p|
} r&G=}ZMO
+=5Dt7/|
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C++/CLI K#B)@W?9
int main() M-Az2x;6
{ A&$oiLc
System::Console::WriteLine("Hello, world!"); `g;`yJX<
} H)s$0Xd
Tn~b#-0
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C# (C Sharp) Hd1e9Q,:|
class HelloWorldApp ;t.LLd
{ _$+lyea
public static void Main() l%aiG+z%6}
{ )$* T>.JA
System.Console.WriteLine("Hello, world!"); 50:$km\
} -! dL
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} a!1\,.
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5z8!Nmb/
COBOL Z;^UY\&X
IDENTIFICATION DIVISION. A
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PROGRAM-ID. HELLO-WORLD. "]%.%$
9tW=9<E
ENVIRONMENT DIVISION. 6$}hb|j
y%X{[F
DATA DIVISION. ?(cbZ#( o
3w=OvafT:
PROCEDURE DIVISION. k+au42:r
DISPLAY "Hello, world!". tFvc~zz9
STOP RUN. Zhl}X!:c?\
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cG|ihG5)
Common Lisp MY zyg
(format t "Hello world!~%") .[v4'ww^
,8KD-" l^g
'V reO52
DOS批处理 H!y%Fa Ti
@echo off ZiBTe,;
echo "Hello, world!" DK/xHIv8-
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Nw`}iR0i
Eiffel : QK )Ym
class HELLO_WORLD qwlIz/j
}c>[m,lz
creation D\~*| J
make /( /)nYAjk
feature -q9`Btz
make is c=U1/=R5
local /dU-$}>ZI
io:BASIC_IO D8otUDB{
do T@PtO"r
!!io WXqrx*?*+
io.put_string("%N Hello, world!") uTNmt]
end -- make -5Qsc/s&
end -- class HELLO_WORLD (UDR=7w)
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Erlang CU3[{a
-module(hello). 5*=a*nD11
-export([hello_world/0]). H7 acT
:I(-@2?{
hello_world() -> io:fwrite("Hello, World!\n"). i"}%ib*X
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.".xNHR#
Forth M@e&uz!Rx
." Hello, world!" CR LQ5 WS
^<0u~u)%T
%,u_`P
Fortran zG_e=
WRITE(*,10) |fXwH> 'sw
10 FORMAT('Hello, World!') '&/"_
STOP (>THN*i
END
WH F>J
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Jsee8^_~
HTML |Uz?i7z
<HTML> \Uun2.K
<HEAD> \`N%77A
<TITLE> Hello World! </TITLE> Gld|w=qr
</HEAD> 7xAzd#
c?=
<BODY> zi~_[l-
<p>Hello World!</p> )NeI]p
</BODY> VmLV:"P}^
</HTML> Hcw@24ic
|A_yr/f
wv>uT{g#
HQ9+ Z~}=q
H M{S7tMX
30 VvZb
5b9v`6Kq
INTERCAL -(FVTWi0
PLEASE DO ,1 <- #13 \BC|`)0h
DO ,1 SUB #1 <- #238 bd[zdL#4K
DO ,1 SUB #2 <- #112 k,>sBk8
DO ,1 SUB #3 <- #112 o<f[K}t9
DO ,1 SUB #4 <- #0 _@3?yv~ D
DO ,1 SUB #5 <- #64 C'C'@?]
DO ,1 SUB #6 <- #238 @`<v d@
DO ,1 SUB #7 <- #26 Ea@N:t?(8=
DO ,1 SUB #8 <- #248 KDP7u
DO ,1 SUB #9 <- #168 WDr'w'
DO ,1 SUB #10 <- #24 ^Z7])arA
DO ,1 SUB #11 <- #16 {6YLiQ*_
DO ,1 SUB #12 <- #158 Yr@)W~
DO ,1 SUB #13 <- #52 ?pdvFM
PLEASE READ OUT ,1 l^x5m]Kt
PLEASE GIVE UP DXj_\ R(}
/[YH
W]
M9{?gM9
Java ,?;q$Xoi
public class Hello riqv v1Nce
{ O/M\Q
public static void main(String[] args) wrq0fHwM
{ D T^3K5
System.out.println("Hello, world!"); Ilvz@=
} oXG,8NOdC
} N%{&%C 6{
;+XiDEX0}
JF]HkH_u
JSP L*tn>AO
<% YC\~PVG
out.print("Hello, world!"); X$w ,zb\
%> <7TE[M'
5KJN](x+
Rt{qbM|b&
MIXAL yu~~"Rq)
TERM EQU 19 the MIX console device number W!g'*L/#L
ORIG 1000 start address BgLK}p^
START OUT MSG(TERM) output data at address MSG mT\!LpX
HLT halt execution
V2kNJwwk
MSG ALF "MIXAL" k WYjqv
ALF " HELL" %RgCU$s[>
ALF "O WOR" c;l
d
ALF "LD " ?#^(QR|/
END START end of the program :`6E{yfM
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Nuva Jq) !)={
<..直接输出..> s
bV6}
Hello, world! v/6QE;BY&Q
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<..或者..> \3w=')({
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<. rkW*C'2fz
// 不带换行 :|xV}
? "Hello, world!" lqe;lWC0Z
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