“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!)5+G
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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》。 :z-?L0C=0
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以下是用不同语言写成的Hello World程序的几个例子: .4J7 ^l
Ada 9fy[%M
with Ada.Text_Io; use Ada.Text_Io; b5)1\ANq
procedure Hello is &q>C
begin 3!op'X!
Put_Line ("Hello, world!"); K BlJJH`z{
end Hello; /$d#9Uv
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GY rUB59
汇编语言 ly`\TnC
R$x(3eyx
x86 CPU,DOS,TASM KFBBqP
MODEL SMALL *X!+wK-+
IDEAL Gvl,M\c9-
STACK 100H 4axuE]
t>vr3)W
DATASEG mtf><YU
HW DB 'Hello, world!$' 1RauI0d*
BsR3$
CODESEG _"t"orD6
MOV AX, @data |RH^|2:x9Q
MOV DS, AX j9/hZqo
MOV DX, OFFSET HW siOyp]
MOV AH, 09H XnKf<|j6k
INT 21H W[LQ$uj
MOV AX, 4C00H m~tv{#Y
INT 21H 79uAsI2-Y
END ~zoZ{YqP
S;"$02]
J;k8 a2$_
x86 CPU,GNU/Linux,NASM E J&w6),d
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). h
^Wm03w
;Enter this into "hello.asm" then type: )_kU,RvZ
;"nasm -f elf hello.asm" m'KEN<)s
;"ld hello.o -o hello" ll
^I;o0
;"./hello" a|ZJzuqo
v2ab84
C*
section .data ;data section declaration ,Vy_%f
msg db 'Hello World!',0AH $\aJ.N6rb
len equ $-msg ;string length 4|hfzCjMI
7g4IAsoD
section .text ;code section declaration ?NxaJ^
global _start ;entry point (start of execution) Xc9NM1bp=
_start: mov edx,len ;string length {>d\
mov ecx,msg ;string start >CYz6G j
mov ebx,1 ;file handle: stdout Hv*+HUc(:
mov eax,4 ;sys_write _4LDzVjNRe
int 80h ;kernel system call v<ati c
nFjaV`6`@
mov ebx,0 ;return value ,_bG'Hmt
mov eax,1 ;sys_exit >&JS-jFg
int 80h ;kernel system call ^V"08
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r@CbhD
x86 CPU,Windows,MASM32 'Uo|@tK
.386 #TIlM]5%
.model flat,stdcall s,j=Kym%
option casemap:none dW%;Z
;Include 文件定义 E8.1jCL>{"
include windows.inc o;v_vCLO
include user32.inc ~Efi|A/
includelib user32.lib C}71SlN'M
include kernel32.inc EdCcnl?R6
includelib kernel32.lib SpMHq_MLM
;数据段 36d6KS 7
.data #Wt1Ph_;
szCaption db 'A MessageBox!',0 ~"cqFdnO
szText db 'Hello,world!',0 $*7AG
;代码段 ~,{nBp9*
.code qdZo
cTf'
start: #&Zj6en}M]
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Gdr7d
invoke ExitProcess,NULL !Xzy:
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> `L"l{^cH
end start {qFAX<{D
[?n}?0
Vah.tOU
AWK Zzv,p
BEGIN { print "Hello, world!" } (kJ"M4*<F'
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BASIC ?V})2wwP
传统版BASIC(例如GWBASIC): m$bNQ7
%`j2?rn
10 PRINT "Hello, world!" WE&"W$0
20 END m</nOf+C
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或在提示符输入: 9U!#Y%*T
G}`Hu_ [\)
?"Hello, world!":END Ekz)Nh)vGR
~GjM:*
现代版BASIC(例如Quick BASIC): gP=@u.
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Print "Hello, world!" $u{ 8wF/)
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以下的语句在Quick BASIC中同样有效: SA.,Q~_T7
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? "Hello,world!" HNV"'p;
Cc` )P>L
Q46sPMH+_
BCPL Q".AmHn
GET "LIBHDR"
MU~nvs;:
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LET START () BE I@YX-@&7
$( PxgLt2dXa
WRITES ("Hello, world!*N") 0^3@>>^
$) ~'/_q4
5OX5\#Ux
_"sFLe{
Befunge k&3'[&$I*,
"!dlrow olleH">v ' q{|p+
, \"mLLnK?
^_@ oW8 hC
9h'klaE(
fu7J{-<<R
Brainfuck 0V?:5r<
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< qjd8Q
+++++++++++++++.>.+++.------.--------.>+.>. t5
#'Lt_Yf!
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C 44_CT?t<
#include <stdio.h> .p(~/MnO
ceGo:Aa<)
int main(void) JS!
{ I)F3sS45}
printf("Hello, world!\n"); [&p^h
return 0; %-~T;_.
} ){XG%nC
$,B@yiie
UZqk2D
C++ V7i1BR8G
#include <iostream> .+hM1OF`x
""^.fh
int main() D3-H!TFpDb
{ 4)~GHb
std::cout << "Hello, world!" << std::endl; i:,37INMt
return 0; "6fTZ<
} `)s>},8W!
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C++/CLI 3QzHQU
int main() oyY0!w,Y
{ ~85Pgb<
System::Console::WriteLine("Hello, world!"); Yet!qmZ
} \!,@p e_
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p;m2RHYF
C# (C Sharp) }w8:`g'T0/
class HelloWorldApp l/w<R
{ kKRZ79"7s
public static void Main() _<1uO=km6
{ D$
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System.Console.WriteLine("Hello, world!"); Xm}~u?$3
} CJu3h&Rp
} o`]u&
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4`#3p@-
COBOL BKQI|i
IDENTIFICATION DIVISION. -wjvD8fL
PROGRAM-ID. HELLO-WORLD. UP}5E h
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ENVIRONMENT DIVISION. l4s_9
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DATA DIVISION. K@zzseQ}=
pC'GKk 8
PROCEDURE DIVISION. QcDWVM'v
DISPLAY "Hello, world!". T5+iX`#M
STOP RUN. l ,T*b
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0cm+:
Common Lisp \#; -C<[b
(format t "Hello world!~%") (S["
ak
r*!sA5
T7{Z0-
DOS批处理 .<C}/Cl
@echo off *n=NBkq%/!
echo "Hello, world!" xW;-=Q
j7)Xm,wI8
2So7fZa^wg
Eiffel U ExK|t
class HELLO_WORLD yEe4{j$
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creation /Ma"a
^
make ;h"?h*}m!\
feature duKR;5:
make is YkKq}DXj
local <([1(SY2e
io:BASIC_IO .iB?:
do 'e4 ;,m
!!io RqIic\aD
io.put_string("%N Hello, world!") /f7Fv*z/
end -- make .Qp 5wCkM
end -- class HELLO_WORLD %:eepG|
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e'c~;Z\A
Erlang FN&.PdRT
-module(hello). U>z8gdzu
-export([hello_world/0]). pA*cF!tq7
/f9jLY+
hello_world() -> io:fwrite("Hello, World!\n"). .`OdnLGy
xrK%3nA4s"
tndtwM*B'
Forth 5CxD ys&<
." Hello, world!" CR =yfLqU
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i`^`^Ka
Fortran 9 T4x1{mO
WRITE(*,10) wyk4v}
10 FORMAT('Hello, World!') se9X
STOP J@y1L]:
END .ya^8gM
hN6j5.x%
9'I
I!
HTML Uu9\;f
<HTML> @L8('8~d
<HEAD> n:GK0wu.s
<TITLE> Hello World! </TITLE> I-NzGx2u
</HEAD> PX3rHKK{
<BODY> K
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<p>Hello World!</p> {ZH9W
</BODY> %p}_4+[;
</HTML> pC2r{-
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0)V<)"i
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H 5A:mu+Iz6H
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W
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INTERCAL {|%N
PLEASE DO ,1 <- #13 %v\0Dm+A
DO ,1 SUB #1 <- #238 ;%Jw9G\h
DO ,1 SUB #2 <- #112 U3 e3
DO ,1 SUB #3 <- #112 +k'5W1e
DO ,1 SUB #4 <- #0 bmotR8d
DO ,1 SUB #5 <- #64 &UUIiQm~
DO ,1 SUB #6 <- #238 CUT D]:\
DO ,1 SUB #7 <- #26 F7`3,SzHp
DO ,1 SUB #8 <- #248 #;Y JR9VN
DO ,1 SUB #9 <- #168 <JKRdIx&1
DO ,1 SUB #10 <- #24 adh=Kp e!w
DO ,1 SUB #11 <- #16 /a\6&Eb
DO ,1 SUB #12 <- #158 E0^~i:Mk
DO ,1 SUB #13 <- #52 *r)/.rK_
PLEASE READ OUT ,1 _](vt,|L
PLEASE GIVE UP D L_{q6ZK
M SU|T
Vh:%e24Z
Java \cdNyVY
public class Hello I_J;/!l=
{ 0hXI1@8]`
public static void main(String[] args) 8/f,B:by
{ ^o]ZDc
System.out.println("Hello, world!"); KvC`6
} A('=P}I^
} FW:x XK
wAxXK94#3
D;It0"
JSP &AmTXW
<%
"w0>
out.print("Hello, world!"); vBUx)l
%> RF
4u\ \
(bi}?V*
S*6P=O*
MIXAL 1Tf"<Dp
TERM EQU 19 the MIX console device number pGz-5afL
ORIG 1000 start address sB
]~=vUP
START OUT MSG(TERM) output data at address MSG kC"<4U
HLT halt execution Uu{I4ls6B
MSG ALF "MIXAL" zCT Wi
ALF " HELL" imAsE;:
ALF "O WOR" ]lzt"[
ALF "LD " [K;J#0V+&L
END START end of the program !CROc}
7=t4;8|j;
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Nuva DPJ#Y -0
<..直接输出..> M"2Tuwz
Hello, world! V2cLwQ'0
n'{cU(
<..或者..> 5bX
SN$7|
(Bd8@}\u_
<. NH$a :>
// 不带换行 SsfnBCVR
? "Hello, world!" y~An'+yBa
v'7,(.E
// 或者 k'X
v*U
[k.|iCD
// 带换行 S,Boutd
?? 'Hello, world!' \5 IB/*
.> Yjv}@i"
{wRs V=*
2e zQX2q
OCaml CN@bJo2
let main () = <\GP\G
print_endline "Hello world!";;
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=K\ L
LFob1HH*8
Z:W6@j-~
Pascal *{8Kb>D
program Hello; Eym<DPu$n
begin L8N`<a5T
writeln('Hello, world!'); 6+(g4MW
end. ,qV8(`y_
+M! f}=H
pi:%Bd&F
Perl r k;k:<c
#!/usr/local/bin/perl ^AK<]r<?L?
print "Hello, world!\n"; WY#A9i5Ge
.t''(0_kC
`;4P?!WG
PHP Ro$'|}(+A
<?php K O "U5v
print("Hello, world!"); =4uL1[0'
?> Mib(J+Il
%mPIr4$Pg
e5_a.c
Pike U7O~ch[,
#!/usr/local/bin/pike Bs(\e^}
int main() $5ZBNGr
{ 6U6,Wu
write("Hello, world!\n"); YU.aZdA&V3
return 0; "l
vPge
} ciVN-;vi
^%V'l-}/
Y&KI/]ly,L
PL/I \ni?_F(Y
Test: procedure options(main); UVlD]oXKh
declare My_String char(20) varying initialize('Hello, world!'); xGTVC=q
put skip list(My_String); wgxr8;8`q
end Test; "2q}G16K
;<d("Yz:@Z
DZ -5A
Prolog 4Tgy2[D?q
goal wl H6
write("hello,world!"). yEyx.Mh.Af
1@sy:{
d`
rk:^^r>5Qi
Python %!I7tR#;
#!/usr/local/bin/python &^Q-:Kxs8
print "Hello, world!" ^JZ ]?iny
@ofivCc<%
.6aC2A]es
REXX &?flH;
say "Hello, world!" 3ha^NjE
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