“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。 \asn^V@"zz
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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》。 $mK;{9Z
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以下是用不同语言写成的Hello World程序的几个例子: ~g{1lcqQP
Ada 8$c) ]Bv
with Ada.Text_Io; use Ada.Text_Io; hXFT(J=
procedure Hello is xjBY6Ylz
begin 1E$\&*(
Put_Line ("Hello, world!"); vcW(?4e
end Hello; In4VS:dD
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pcv\|)&}
汇编语言 io\t>_
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x86 CPU,DOS,TASM :Xy51p`.;]
MODEL SMALL NcbW"Qv3
IDEAL Lp%J:ogV`
STACK 100H (6/aHSXI
V9/2y9u
DATASEG ,#N}Ni:
HW DB 'Hello, world!$' B _ J2Bf
e
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CODESEG #Ey_.4S
MOV AX, @data ,fiV xn Q
MOV DS, AX qJ5b;=
MOV DX, OFFSET HW F&`%L#s|
MOV AH, 09H LV ]10v6
INT 21H &W3srJo
MOV AX, 4C00H t[;-gi,,
INT 21H 5OPvy,e6
END zvGncjMkC
#e =E
7
2i&-`&4
x86 CPU,GNU/Linux,NASM 1
jLQij
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). L_T+KaQCH
;Enter this into "hello.asm" then type: |;:Kn*0/]
;"nasm -f elf hello.asm" s5v}S'uO{
;"ld hello.o -o hello" "%Ief4
;"./hello"
n?c[ E+i;
#"oLz"{
section .data ;data section declaration pFs/ipZX^*
msg db 'Hello World!',0AH ,2 xD>+=
len equ $-msg ;string length t"9r`0>
mph9/ %]S
section .text ;code section declaration s/t,6-~EH
global _start ;entry point (start of execution) zk1]?
_start: mov edx,len ;string length R`o
Xkj
mov ecx,msg ;string start kbvF
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mov ebx,1 ;file handle: stdout [g`4$_9S
mov eax,4 ;sys_write %<+Ku11
int 80h ;kernel system call oR%cG"y
HoX={^aG%
mov ebx,0 ;return value $ r-rIW5\
mov eax,1 ;sys_exit djoP`r
int 80h ;kernel system call 4h?@D_{k
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[T9]q8"
x86 CPU,Windows,MASM32 uzb|yV'B
.386 %<8?$-[
.model flat,stdcall mYfHBW:
option casemap:none +BM[@?"hrh
;Include 文件定义 b7+(g[O
include windows.inc Y_C6*T%
include user32.inc ^N^s|c'
includelib user32.lib )l(DtU!E
include kernel32.inc -|u
yJh
includelib kernel32.lib nm_taER
;数据段 g`Q!5WK*
.data 89KFZ[.}]
szCaption db 'A MessageBox!',0 $mf O:%
szText db 'Hello,world!',0 g0QYBrp
;代码段 CX2qtI8N?
.code FQ0 ;%Z
start: d~6UJ=]@8
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ;FuST
invoke ExitProcess,NULL (QojIdHt
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 9Y:.v@:}0
end start Ll%}nti
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0,&] 2YJ
BEGIN { print "Hello, world!" } Jq"3xj
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BASIC BbCW3!(
传统版BASIC(例如GWBASIC): jrS$!cEo
:}q)]W
10 PRINT "Hello, world!" M<=e~';H
20 END (]?M=?0\
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或在提示符输入: LEN=pqGJ.
/V2yLHm
?"Hello, world!":END Ps(oxj7
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现代版BASIC(例如Quick BASIC): y"8,j m
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Print "Hello, world!" _V8;dv8
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以下的语句在Quick BASIC中同样有效: BhjDyB
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? "Hello,world!" =j20A6gND
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BCPL WAtv4
GET "LIBHDR" p<mBC2!%
{wk#n.c
LET START () BE e\-,e+
$( AuM}L&`i^
WRITES ("Hello, world!*N") B>S>t5$
$) CQmozh-
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Nw"?~"bo
Befunge ;;C2t&(
"!dlrow olleH">v )lz)h*%#
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m;1/+qs0
9s7TLT k
Brainfuck 6Z=Qs=q
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< e_l|32#/
+++++++++++++++.>.+++.------.--------.>+.>. (!efaj
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#include <stdio.h> e7-IqQA{3C
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int main(void) u"wWekB
{ t.\Pn4
printf("Hello, world!\n"); (F3R!n
return 0; CGb4C(%-7
} c/j+aj0.v
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C++ KLuOg$i
#include <iostream> z6,E}Y
e^x%d[sU
int main() '.gi@Sr5
{ $-jj%kS
std::cout << "Hello, world!" << std::endl; DvLwX1(l
return 0; qu'D"0
} bI(8Um6m
XWNo)#_3
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C++/CLI k!bJ&} Q(b
int main() 35x]'
{
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System::Console::WriteLine("Hello, world!"); 1_;{1O+B
} 8X278^
#
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=[Z3]#h
C# (C Sharp) 4b,+;
class HelloWorldApp BG.sHI{
{ Z.x]6
public static void Main() 3Of!Ykf=
{ 3zc;_U2
System.Console.WriteLine("Hello, world!"); Jt<J#M<}7
} \~Ml<3Zd:
} XIdC1%pr;
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COBOL O(e!Vx{t!
IDENTIFICATION DIVISION. to1r
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PROGRAM-ID. HELLO-WORLD. >#gDk K
1{a4zGE?[
ENVIRONMENT DIVISION. qzO5p=}
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DATA DIVISION. WIAukM8~
3J/l>1[
PROCEDURE DIVISION. )iK:BL*Nw
DISPLAY "Hello, world!". cW"DDm
g
STOP RUN. jP2#w{xq
bC) <K/Q9
rce._w }
Common Lisp a"t~K
(format t "Hello world!~%") CBpwtI>p
59"tHb6 E
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DOS批处理 &RI;!qn6(
@echo off R9"}-A
echo "Hello, world!" ]$sb<o
.a
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J6>tGKa+e
Eiffel _% \%
class HELLO_WORLD 6-g>(g
A;&YPHB
creation /EegP@[
make _Y}cK|3
feature 7&%HE\
make is #N~1Ye
local fgC@(dvfk
io:BASIC_IO D/;[x{;E
do YTTij|(
!!io &@BAVc z
io.put_string("%N Hello, world!") dD~H ft
end -- make f5{|_]q]
end -- class HELLO_WORLD c5 AaUza
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Erlang -AolW+Y
-module(hello). y9LO;{(
-export([hello_world/0]). {{>,c}O /
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hello_world() -> io:fwrite("Hello, World!\n"). n6M #Xc'JA
s_+.xIZ
3c(mZ
Forth Br42Qo2"T>
." Hello, world!" CR Hi/[
V\e1NS
0S'@(p[A
Fortran ~Cg7
WRITE(*,10) L$+_
10 FORMAT('Hello, World!') ;O{bF8U
STOP ~ISY( &
END :xbj&
l
T\=#y
ct
OCj$$u
HTML ""|;5kJS4
<HTML> njO~^Hl7
<HEAD> G!G:YVWXP
<TITLE> Hello World! </TITLE> o~L(;A]yN
</HEAD> 9k6/D.Dz
<BODY> uqa
pj("
<p>Hello World!</p> Y|J=72!]
</BODY> YK$[)x\S
</HTML> iVf7;M8O
~{-Ka>A
3;wiwN'
HQ9+ N`3^:EJL8
H mO(Y>|mm
;(;~yB|NZ5
TA:uB[Ji
INTERCAL +{m+aHk
PLEASE DO ,1 <- #13 A=Hv}lv
DO ,1 SUB #1 <- #238 nt-_)4Fm
DO ,1 SUB #2 <- #112 r:E4Wi{\
DO ,1 SUB #3 <- #112 }[drR(]`dO
DO ,1 SUB #4 <- #0 ocMTTVo
DO ,1 SUB #5 <- #64 v0=v1G*rvJ
DO ,1 SUB #6 <- #238 c#1kg@q@
DO ,1 SUB #7 <- #26 ~RwoktO
DO ,1 SUB #8 <- #248 suW|hh1/Ya
DO ,1 SUB #9 <- #168 :F#^Q%-IS
DO ,1 SUB #10 <- #24 7#oq|5
DO ,1 SUB #11 <- #16 V[]Pya|s+
DO ,1 SUB #12 <- #158 8O60pB;4
DO ,1 SUB #13 <- #52 8bs' Ek{'o
PLEASE READ OUT ,1 kumo%TXB&
PLEASE GIVE UP RP[`\
Ex|Z@~T12
1^V.L+0s]
Java Bg zq
public class Hello kdx06'4o
{ DHuvHK0#
public static void main(String[] args) 5} ur,0{
{ <sM_zoprc
System.out.println("Hello, world!"); U>bIQk"4
} 'irwecd8
} `
"-P g5
4GeN<9~YS
r$'.$k\
JSP ]@Z
nP,8
<% &(l.jgqg&
out.print("Hello, world!"); in,0(I&I
%> )'e1@CR
wq!9wk9
$sg- P|Wo
MIXAL YWD gRb
TERM EQU 19 the MIX console device number j8bA"r1
ORIG 1000 start address S~ S>62
START OUT MSG(TERM) output data at address MSG
"^ BA5
HLT halt execution ggkz
fg &
MSG ALF "MIXAL" u^c/1H:6
ALF " HELL" XeY[;}9
ALF "O WOR" {D|ST2:E
ALF "LD " ;lrO?sm
END START end of the program CR2.kuM0~
G %\/[
B
&DHIYj1 i
Nuva P2iuB|B@
<..直接输出..> P$N5j~*
Hello, world! /-m)
c;-NRvVb
<..或者..> *B{]
"lC>_A
<. "Ms{c=XPK
// 不带换行 ? u".*!%
? "Hello, world!" f8qDmk5s
D+! S\~u
// 或者 |8[!`T*s
) R5j?6}xF
// 带换行 .0gfP4{1{
?? 'Hello, world!' *=v%($~PK6
.> u2$.EM/iae
4}cxSl]jf!
E4Ez)IaKyi
OCaml |;t{L^
let main () = PNo:vRtsq
print_endline "Hello world!";; Y}s6__
,L~aa?Nb-
8y_(Iu|:
Pascal r|\{!;7
program Hello; -e_TJA
begin =5fY3%^b{
writeln('Hello, world!'); YO?o$Hv16
end. ht>/7.p]
x>BFK@#
)b=vBs`%
Perl s6(md<r
#!/usr/local/bin/perl _/cX!/"
print "Hello, world!\n"; O'#;Ge/,
j%Z5[{!/,X
C2=PGq
PHP iQG]v[$
<?php GBR$k P
print("Hello, world!"); 4x4[
?> h)j#?\KYm9
f?eq-/U R
w2/3[VZ}l
Pike )K$xu (/K
#!/usr/local/bin/pike ]GCw3r(!
int main() 1|ddG010
{ ot!m=s
write("Hello, world!\n"); &(Hw:W9
return 0; /-^J0f+l3
} s"w^E\>6
{}iS5[H]
u8|CeA
PL/I ZF#n(Y?
Test: procedure options(main); 'Z9UqEGV
declare My_String char(20) varying initialize('Hello, world!'); a MFUj+^
put skip list(My_String); tQUKw@@Q
end Test; upZc~k!1\
*&_cp]3-WF
5=p<"*zJ
Prolog *3@8,~_tp
goal O\Z!7UQ$
write("hello,world!"). gM]E8%;{
B^zg#x#8
Lyn{Uag
Python ;~[}B v
#!/usr/local/bin/python 1tiOf~)
print "Hello, world!" xw_$1
S
SK@ p0:
}2m>S6""A
REXX TqV^\C?
say "Hello, world!" $dK430_B
0]MD?6-
p W5D!z
Ruby j;D$qd'J
#!/usr/bin/ruby D0kz;X
print "Hello, world!\n" uW/>c$*)
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