“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。 9G(.=aOj,
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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》。 dRg1I=|{_
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以下是用不同语言写成的Hello World程序的几个例子: Bvx%|:R
Ada e-<fkU9^W
with Ada.Text_Io; use Ada.Text_Io; ju8mO&
procedure Hello is =IBdnEz:M
begin yC.ve;lG
Put_Line ("Hello, world!"); 6hKavzSi
end Hello; Ko% &~C_
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汇编语言 IQ$l!)
9ls<Y
x86 CPU,DOS,TASM [sG=(~BU
MODEL SMALL )mO|1IDTN
IDEAL *LJN2;
STACK 100H ,2u-<8
-05zcIVo
DATASEG W2h^ShG
HW DB 'Hello, world!$' 1fRYXqx
#p~tkQ:'1
CODESEG Qz&I~7aoyV
MOV AX, @data D6Ov]E:fa
MOV DS, AX Q1V 4bmM
MOV DX, OFFSET HW =g'7 xA
MOV AH, 09H \2i4]V
INT 21H G`E%uyjG$j
MOV AX, 4C00H .(Q3M0.D
INT 21H o?uTL>Zin
END cT^,[3i:c
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EOhUr=5~
x86 CPU,GNU/Linux,NASM j<!rc>)2+L
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). m<005_Z0Q
;Enter this into "hello.asm" then type: 4A0R07"
;"nasm -f elf hello.asm" sAS\-c'6
;"ld hello.o -o hello" k{Yj!C>
#
;"./hello" M5 ep\^
hf P}+on%
section .data ;data section declaration VkFTIyt
msg db 'Hello World!',0AH q.i@Lvu#
len equ $-msg ;string length "
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section .text ;code section declaration pgT{#[=>
global _start ;entry point (start of execution) t`03$&Cx7
_start: mov edx,len ;string length [~?LOH
mov ecx,msg ;string start a^i`DrX
mov ebx,1 ;file handle: stdout 6N\~0d>5m
mov eax,4 ;sys_write =UA-&x@
int 80h ;kernel system call
OM{-^
GEfX,9LF &
mov ebx,0 ;return value sl-LX)*N#
mov eax,1 ;sys_exit g"]%5Ow1
int 80h ;kernel system call MzYTEe&-L
cqr!*
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x86 CPU,Windows,MASM32 s0v?*GRX
.386 ULMG"."IH
.model flat,stdcall z~+_sTu
option casemap:none hf0G-r_ow
;Include 文件定义 BIDmZU9tL
include windows.inc VkhZt7]K}B
include user32.inc "cRc~4%K
includelib user32.lib ,XCC#F(d1
include kernel32.inc +[`N|x<
includelib kernel32.lib LslQZ]3MY
;数据段 V=k!&xN~
.data 6G7B&"&
szCaption db 'A MessageBox!',0 _ZIaEJjH/
szText db 'Hello,world!',0 1F-o3\
;代码段 b|n%l5
1
.code A2qus$
start: |uV1S^!A
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK rAIX(2@cR_
invoke ExitProcess,NULL TbU\qcm]]
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> wKe^5|Rr
end start <|k!wfHL
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AWK fo&q/;l\
BEGIN { print "Hello, world!" } ,W5pe#n
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BASIC Q#urx^aw
传统版BASIC(例如GWBASIC): !Qjpj KRy
.}kUD]pW
10 PRINT "Hello, world!" HI#}M|4n
20 END yfiRMN"2
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或在提示符输入: tz
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?"Hello, world!":END o DPs xw
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现代版BASIC(例如Quick BASIC): b:\I*WJ
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Print "Hello, world!" LTS3[=AB
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以下的语句在Quick BASIC中同样有效: m/=,O_
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? "Hello,world!" -
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dwv xV$Nt
ml.l( 6A
BCPL U|g4t=@ZR
GET "LIBHDR" k )Z?
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LET START () BE )M#~/~^f+
$( VhT4c+Zs
WRITES ("Hello, world!*N") ymY,*Rb
$) =bded(3Z
0?BT*
W:4]-i?2
Befunge ]?#f=/
"!dlrow olleH">v ]n${j/x
, 3T# zxu
^_@ bd_U%0)pi1
FfI$3:9
"@Ra>qb
Brainfuck j,/OzVm9
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< !\JG]2 \
+++++++++++++++.>.+++.------.--------.>+.>. 1& YcCN\k
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C ']u w,b
#include <stdio.h> v#IW;Rj8
Os*,@N3t
int main(void) zc'!a"
{ 4FQU$f
printf("Hello, world!\n"); NAZxM9
return 0; +NxEx/{
} 2fO ~%!.G
0
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C++ JiDX|Q<c
#include <iostream> 6f?5/hq
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int main() 702&E(rx,
{ UB|Nx(V s
std::cout << "Hello, world!" << std::endl; k^ B'W{
return 0; H_ .@{8I
} U.crRrN
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C++/CLI K~+y<z E
int main() pHsp]a
{ _Jj|g9b
System::Console::WriteLine("Hello, world!"); jsf=S{^2
} M86v
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b?CmKiM%
C# (C Sharp) /]>&OSV
class HelloWorldApp \kzxt/Ow
{ ?T$i
public static void Main() ti`z:8n7
{ BpDf4)|
System.Console.WriteLine("Hello, world!"); 67 }y/C]<
} ?)",}XL6
} jzI\Q{[m'
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COBOL >J 3N,f
IDENTIFICATION DIVISION. Mn7 y@/1
PROGRAM-ID. HELLO-WORLD. y`mE sj
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ENVIRONMENT DIVISION. 2(5wFc
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DATA DIVISION. ;g^QHr
)}~k7bb}Y
PROCEDURE DIVISION. |I^\|5
DISPLAY "Hello, world!". J^
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STOP RUN. ,
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9H1R0iWW
5EFow-AH
Common Lisp wx}\0(]Gl
(format t "Hello world!~%") C(}9
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V F6OC4 K
DOS批处理 | (v/>t
@echo off ,BW^j.7
echo "Hello, world!" ]B3 0d
8BE OE<
KP_=#KD
Eiffel gSZNsiH
class HELLO_WORLD -gIuL
6xk"bIp
creation >]T(}S~
make
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feature '3[Ecy#
make is 9s73mu`Twg
local $w[@L7'(
io:BASIC_IO q&jZmr
do : 60PO
!!io ujmW {()
io.put_string("%N Hello, world!") X2dTV}~i
end -- make iBN,YPo~
end -- class HELLO_WORLD b1nw,(hLY
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Erlang /y@$|DI1
-module(hello). ^w8H=UkP!+
-export([hello_world/0]). XLqS{r~?
XXuU@G6Z7$
hello_world() -> io:fwrite("Hello, World!\n"). 1_7x'5GdA
>9+@oGe(E
FLEf(
Forth &oTSff>p}
." Hello, world!" CR .g(yTA
F=iz\O!6
HY5g>wv@
Fortran n@T4z.*~lA
WRITE(*,10) "h$A. S
10 FORMAT('Hello, World!') C~'}RM
STOP K+ ufcct
END iP|h] ;a+@
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W>wE8? _,
HTML !uO|1b
<HTML> S$BwOx3QF
<HEAD> 0RtqqNFD
<TITLE> Hello World! </TITLE> G
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</HEAD> ^q
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<BODY> KDRIy@[e
<p>Hello World!</p> COJqVC(#
</BODY> IH}?CZ@{?
</HTML> qZKU=HM
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HQ/PHUg2
HQ9+ ZzzQXfA#
H l:j9lBS
7S2Bm]fP
f
IQ$a>
INTERCAL [FF%HRce,.
PLEASE DO ,1 <- #13 Z%(aBz7Et
DO ,1 SUB #1 <- #238 :ozHuHJ#
DO ,1 SUB #2 <- #112 N+HN~'8r
DO ,1 SUB #3 <- #112 Ug3PZ7lK
DO ,1 SUB #4 <- #0 [rqq*_eB
DO ,1 SUB #5 <- #64 *|_u~v:)|5
DO ,1 SUB #6 <- #238 >,uof ?
DO ,1 SUB #7 <- #26 1ww|km
DO ,1 SUB #8 <- #248 3_^w/-7`B
DO ,1 SUB #9 <- #168 /A|ofAr)
DO ,1 SUB #10 <- #24 V)!Oss;i
DO ,1 SUB #11 <- #16 CM9+h;Zm
DO ,1 SUB #12 <- #158 N<"_5
DO ,1 SUB #13 <- #52 Qi6vP&
PLEASE READ OUT ,1 P1Re7/
PLEASE GIVE UP X*$ 7g;
zr8 4%_^
7 &GhJ^Ku
Java dL6sb;7R
public class Hello cCyg&% zsT
{ g@B9i=
public static void main(String[] args) () b0Sh=
{ (5_o H
System.out.println("Hello, world!"); hLx*$Z>
} Zu&trxnNf[
} x9-K}s]%
0 I;>du
(Clf]\_II
JSP zrnc~I+
<% +-qD!(&-6
out.print("Hello, world!"); cpu+"/\
%> "pMXTRb
`1M_rG1/+
<pK;D
MIXAL (873:"(
TERM EQU 19 the MIX console device number t
m5>J)C
ORIG 1000 start address n$#^gzU4
START OUT MSG(TERM) output data at address MSG <XCH{Te1
HLT halt execution Y<a/(`
MSG ALF "MIXAL" Z# 7HuAF{]
ALF " HELL" z)QyQ
ALF "O WOR" ` Bkba:
ALF "LD " `n5RDz/f0
END START end of the program "=4=Q\0PT
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t M A
Nuva *zz/U
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<..直接输出..> P5] cEZ n
Hello, world! `z+:Z>>
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<..或者..> 2eyvY|:Q>
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<. pjjs'A*y
// 不带换行 Kq-y1h]7H
? "Hello, world!" YdC:P#
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// 或者 W=F?+KgL
#i)h0ML/e
// 带换行 l9P~,Ec4''
?? 'Hello, world!' ]Ms~;MXlx5
.> $t}L|"=8X
*dUnP{6 g
|6_<4lmTxF
OCaml QI`Z[caF
let main () = (qohb0
print_endline "Hello world!";; mRQ F5W6
u7a4taM$d
nwO;>Qr
Pascal zZ;tSKL
program Hello; !u4oo-
begin <
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writeln('Hello, world!'); iW)FjDTP
end. Kj-:'jzW
S1`+r0Fk~n
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Perl ]IyC
#!/usr/local/bin/perl ';b/D
print "Hello, world!\n"; vQBfT% &Q-
m[Zz(tL
`$MO.K{
PHP [lyB@) 6.
<?php yKfRwO[j
print("Hello, world!"); PX]A1Kt?
?> of{wZU\J+9
m$[\(Z(/
/i^b;?/1
Pike #C!8a
#!/usr/local/bin/pike =>ph\
int main() dVCBpCxI
{ E;-R<X5n
write("Hello, world!\n"); T(3"bS.,
return 0; 2v%~KV
} %) q5hB
LvW9kL+WiQ
`n5|4yaG~
PL/I ,)oUdwR k
Test: procedure options(main); 8 kd
declare My_String char(20) varying initialize('Hello, world!'); 9>%f99n
put skip list(My_String); w_\niqm<y
end Test; oN)K2&M0
P8;|>OLZ)
wl5!f|
Prolog 4b6$Mj
goal WERK JA
write("hello,world!"). y4M<L. RO
Fwho.R-.
Hyq|%\A
Python :K2N7?shA
#!/usr/local/bin/python r7w&p.?
print "Hello, world!" hQl3F6-ud
=_Qt&B)
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REXX =%$ _)=}J
say "Hello, world!" j:]/AReOL
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e2/&X;2
Ruby {-<h5_h@
#!/usr/bin/ruby `iQyKZS/+
print "Hello, world!\n" t{84ioJ"$
#2x\d
/ ^!(rHf
Scheme Kw925@W
(display "Hello, world!") "L{;=-e
(newline) S>cT(q_&
p?8>9
^HC!
my
sed (需要至少一行输入) i3#]_ p{
sed -ne '1s/.*/Hello, world!/p' (Rs<'1+>
V-J\!CHX
}t"!I\C
Smalltalk WY<ip<
Transcript show: 'Hello, world!' zPhNV8k-
3H4p$\;C
-41L^Di\
SNOBOL 51&wH
OUTPUT = "Hello, world!" MO/l(wO
END SM0=
bumS>:
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SQL e2/[`k=7-
create table MESSAGE (TEXT char(15)); S}fIZ1
insert into MESSAGE (TEXT) values ('Hello, world!'); C7)].vUN
select TEXT from MESSAGE; E%/E%9-7\
drop table MESSAGE; .@ 1\26<
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Tcl &