“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。 FYR%>Em
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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》。 a{^[<
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以下是用不同语言写成的Hello World程序的几个例子: 9"1 0:\U
Ada _$PZID
with Ada.Text_Io; use Ada.Text_Io; ,n TC7V
procedure Hello is 3&_O\nD
begin db`xlvrCY
Put_Line ("Hello, world!"); Mz#
&"WjF
end Hello; 5_ -YF~
5 :6^533]
H`CDfTy
汇编语言 Fx2
KRxk
CdlE"Ye
x86 CPU,DOS,TASM =HmV0
MODEL SMALL gN$.2+:
IDEAL >Jt,TMMlt
STACK 100H cOcF VPQ
p;`jmF
DATASEG z8{ kwz
HW DB 'Hello, world!$' 2MQgTFM9
z]^&^VFu
CODESEG )a.Y$![
MOV AX, @data K#H}=Y A
MOV DS, AX :&}(?=<R}L
MOV DX, OFFSET HW 7SLJLn3d
MOV AH, 09H Ac'[(
INT 21H f305 yo
MOV AX, 4C00H &1YqPk
INT 21H PN[
`p1F
END
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x86 CPU,GNU/Linux,NASM
w V-1B\m
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ;E>5<[aa
;Enter this into "hello.asm" then type: wx nD3
;"nasm -f elf hello.asm" Iq0_X7:{QI
;"ld hello.o -o hello" W!8g.r4u+,
;"./hello" $D
+6=m[
`G&W%CHB
section .data ;data section declaration iM+K&\{_h
msg db 'Hello World!',0AH 0'*whhH
len equ $-msg ;string length ,S
E5W2a]
G[n^SEY!
section .text ;code section declaration 3US}('
global _start ;entry point (start of execution) >;kCcfS3ct
_start: mov edx,len ;string length YMOy6C
mov ecx,msg ;string start |ybW
mov ebx,1 ;file handle: stdout (iM"ug2
mov eax,4 ;sys_write [~9rp]<
int 80h ;kernel system call '#gd19#
Og[NRd+
mov ebx,0 ;return value jOj`S%7
mov eax,1 ;sys_exit 7yo/sb9h
int 80h ;kernel system call l?v`kAMR
&cztUM(
,}2yxo;i
x86 CPU,Windows,MASM32 H$TYp
.386 OY7\*wc:
.model flat,stdcall q+f]E&':
option casemap:none lMz5))Rr
;Include 文件定义 La9v97H:
include windows.inc sc'QNhrW
include user32.inc *t J+!1
includelib user32.lib Wc [@,
include kernel32.inc a)=WDRk
includelib kernel32.lib T`KH7y|bv
;数据段 qOYCQ
.data rStfluPL
szCaption db 'A MessageBox!',0 vKN"o* q
szText db 'Hello,world!',0 3-#|6khqt
;代码段 O9*cV3}H
.code gXN#<g,:^
start: ]Aap4+s
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK E;$)Oz
invoke ExitProcess,NULL wU,{5 w
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> g\;AU2?p7
end start .WM 0x{t/
w^MU$ubx
}MAQhXI^O|
AWK ufAp7m@ud
BEGIN { print "Hello, world!" } B5h-JON]-
^(y=DJ7
ks|[`FH
BASIC BqC, -gC
传统版BASIC(例如GWBASIC): S6CM/
RB<LZHZI
10 PRINT "Hello, world!" `l,=iy$
20 END @Aa$k:_
!]1X0wo\
或在提示符输入: UH/) 4Wg
#R$d6N[H
?"Hello, world!":END |d^r"wbs3
TJFxo?
gC"
现代版BASIC(例如Quick BASIC): _h>S7-X
le*mr0a
Print "Hello, world!" uU(G &:@
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以下的语句在Quick BASIC中同样有效: 6Ug(J$Ouh
7uG@hL36
? "Hello,world!" lxoc.KDtR
hNBv|&D#
4GWt.+{J$
BCPL jqxeON
GET "LIBHDR" nM:e<`r
p'UY Ht
LET START () BE ]:`q/iS&
$( :q=u+h_
WRITES ("Hello, world!*N") 02E-|p;
$) "&?F6Pi
`$oGgz6ZT
'7G'R
Befunge <,p|3p3
"!dlrow olleH">v *O-1zIlp
, bOjvrg;Sz\
^_@ *KNj5>6=
o`S|
UwOZBF<
Brainfuck .,zrr&Po
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< T|^rFaA
+++++++++++++++.>.+++.------.--------.>+.>. jqq96hP,
:e> y=
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C W^; wr#
#include <stdio.h> PD$XLZ
lx*"Pj9hho
int main(void) 5=%:CN!/@p
{ MMg"G6?
printf("Hello, world!\n"); y<mmv~=
return 0; ?"f\"N
} *izPLM}+
kKr|PFz
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xeNY\
C++ 5&a4c"fU
#include <iostream> g a|RW0
MmH[ 7R
int main() 7U68|\fI!
{ ~EJVlji
std::cout << "Hello, world!" << std::endl; gi!{y
return 0; S <~"\<ED
} DM"nxTVre
S*;8z}5<\
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C++/CLI gN#&Ag<?
int main() Zwj\Hz.
{ E>|[@Z
System::Console::WriteLine("Hello, world!"); ]q@/:I9]
} 4AdZN5
~lO^C
y<r7_ysi
C# (C Sharp) iaXpe]w$n
class HelloWorldApp u,AZMjlF
{ oE:9}]N_
public static void Main() [ ySO
{ N&g9z{m7
System.Console.WriteLine("Hello, world!"); VZ"W_U,
} !14aw9Q
} nXH U|5.I
Lc,`
H9'Y` -r
COBOL qOaI4JP@
IDENTIFICATION DIVISION. Zz!0|-\
PROGRAM-ID. HELLO-WORLD. o.Ld.I)
7"}<J7"})
ENVIRONMENT DIVISION. r #H(kJu,
V,t&jgG*
DATA DIVISION. j8/rd
|"V]$s$ c
PROCEDURE DIVISION. s5{N+O)~S
DISPLAY "Hello, world!". .)Xyzd
STOP RUN. g/H:`J
I|jGu9G
g+>$_s
Common Lisp b0W~*s [4
(format t "Hello world!~%") )Los\6PRn
S[!sJ-rG
AQX~do\A
DOS批处理 AITV+=sN
@echo off #$q~ZKB
echo "Hello, world!" 1=LI))nV
TAfLC)
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Eiffel 3I0=^>A
class HELLO_WORLD ,G2]3
3Z
4wp5ghe
creation vLQ!kB^\W
make bvyX(^I[q
feature b[+G+V
make is ^7Sk`V
local [I/f(GK
io:BASIC_IO 4`Com~`6"
do >KF1]/y<
!!io *n9t~t6GHg
io.put_string("%N Hello, world!") !uaV6K
end -- make 6ww4ZH?j
end -- class HELLO_WORLD aLr\Uq,83
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1J$sIY,Ou
Erlang yEYlQ= [#
-module(hello). OVr,
{[r
-export([hello_world/0]). TR2X' `:O
CX](^yU_
hello_world() -> io:fwrite("Hello, World!\n"). CKJ9YKu{W
L,!3
Jpi\n-
d!
Forth s)_Xj`Q#
." Hello, world!" CR V}?d
,.m`{
{Rc!S? 8
Y@)iPK@z
Fortran 6Y!hz7D
WRITE(*,10) 1J8okBhZ
10 FORMAT('Hello, World!') 8?ig/HSt2
STOP MUo}Qi0K
END Z";~]]$!Y
"Mt4~vy
w!$|IC
HTML K$>C*?R
<HTML> 7;cb^fi/
<HEAD> 3yNILj
<TITLE> Hello World! </TITLE> l2>ka~
</HEAD> _Wcr'*7
<BODY> "`pI!nj
<p>Hello World!</p> 4-P'e%S
</BODY> Mm7l!
</HTML> rn1^6qy)
sW/^82(dM
~G0\57;h
HQ9+ HsA4NRF'7
H +T}:GBwD7
;CbQ}k
j$Ttoo
INTERCAL Jw%0t'0Zi
PLEASE DO ,1 <- #13 #BA=?7
DO ,1 SUB #1 <- #238 bMT1(edm
DO ,1 SUB #2 <- #112 ]{->/.oB
DO ,1 SUB #3 <- #112 EdQ:8h
DO ,1 SUB #4 <- #0 ;6o p|O
DO ,1 SUB #5 <- #64 7^Y "K
DO ,1 SUB #6 <- #238 3+6s}u)
DO ,1 SUB #7 <- #26 ,TrrqCw>
DO ,1 SUB #8 <- #248 dP8b\H
DO ,1 SUB #9 <- #168 weMC9T)B
DO ,1 SUB #10 <- #24 ~*-(_<FH
DO ,1 SUB #11 <- #16 c^^[~YWj
DO ,1 SUB #12 <- #158 :W'Yt9v)
DO ,1 SUB #13 <- #52 J23Tst#s
PLEASE READ OUT ,1 >;@ _TAF
PLEASE GIVE UP sGx"ja+
xyGk\= S
6nxX~k
Java <DG=qP6O
public class Hello bLMN9wGOgK
{ :1Jg;G
public static void main(String[] args) #{973~uj
{ Xg>nb1e
System.out.println("Hello, world!"); FBit/0
} p|mt2oDjw
} <0my,hAK
I!IWmU6FN
3QL I|VpO
JSP 9NCo0!Fb
<% Q+e|;Mj
out.print("Hello, world!"); plL##?<D<
%> RS&l68[6
J!?hajw7N
|Sg
FHuA
MIXAL xE/r:D#
TERM EQU 19 the MIX console device number *b+ef
ORIG 1000 start address 1+;Z0$edxz
START OUT MSG(TERM) output data at address MSG %T:~N<8)
HLT halt execution _c*0Rr
MSG ALF "MIXAL" $~M#msK9
ALF " HELL" /15e-(Zz/
ALF "O WOR" g_z%L?N
ALF "LD " n W2[x;
END START end of the program u<`CkYT
?C#=Q6
Q v/}WnBk
Nuva 8 VMe#41
<..直接输出..> d!0p^!3
Hello, world! Xy{\>}i]N
><odBM-
<..或者..> #R&Dgt
Hm=!;xAFX
<. VEAf,{)Q
// 不带换行 eNN)2-96
? "Hello, world!" ?+S jt
Gv,_;?7lD
// 或者 8=;'kEU
L\L/+yNv:G
// 带换行 T;(k
?? 'Hello, world!' UR')) 1n
.> S]^`Qy)
H f}->
h
WvQh
OCaml `usX(snY
let main () = R
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print_endline "Hello world!";; <uXZ*E
c]]OV7;)>
=n_r\z
Pascal #Z8=z*4
program Hello; wfH#E2+pk
begin
6C6<,c
writeln('Hello, world!'); d`>'<
end. 69)- )en
8c-r;DE
<Wgp$qt;
Perl PPiN`GM
#!/usr/local/bin/perl }EB/1 8
print "Hello, world!\n"; BD6oN]
uveby:dh
U_ j\UQC
PHP /]~Oa#SQ:
<?php 0zD[mt
print("Hello, world!"); RY=B>398:
?> XW]'by
$RxS<_tj
&6-udZB-
Pike ?Rlo<f:Mf
#!/usr/local/bin/pike +{
Q]$b
int main() @.Pd3CB0
{ KiN8N=z
write("Hello, world!\n"); ^8p=g-U\
return 0; 2l5>>yY
} =<ngtN
x9UF
906b=
PL/I sem:"
Test: procedure options(main); y; LL^:rq
declare My_String char(20) varying initialize('Hello, world!'); 8PQKB*<dB"
put skip list(My_String); APydZ
end Test; +C4UM9
.(T*mk*>
#l kv&.)x
Prolog IbFS8 *a\
goal b}DxD1*nsI
write("hello,world!"). SGi(Zkc
@J"Gn-f~
L4bx [
Python
"<f"r#
#!/usr/local/bin/python '1|FqQ\.
print "Hello, world!" +AGI)uQQ
|G^w2"D_Z
Ae,P&(
REXX k/MrNiC
say "Hello, world!" =+{SZh@
X6lkz*M.
J&mZsa)4
Ruby [
+w=
#!/usr/bin/ruby u >R2:i
print "Hello, world!\n"
Gw4~
C"`,?K(U
9?8Yf(MC%u
Scheme )$[.XKoT
(display "Hello, world!") *&7F(
(newline) H_H3Gp
X=Qa TV
aj>6q=R
sed (需要至少一行输入) <Lz/J-w
sed -ne '1s/.*/Hello, world!/p' ~?l>QP|o
8|FHr,
\]bAXa{ p
Smalltalk K"lZwU\:On
Transcript show: 'Hello, world!' b#XY.+ *0
3[*E>:)qh
ces|HPBa&6
SNOBOL CKoRq|QG_
OUTPUT = "Hello, world!" -?T:> *]p
END 9 b?Nlk8d
rUJIf;Zwo
yHrYSEM
SQL z=YHRS
create table MESSAGE (TEXT char(15)); B.O &