“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。 k>F!S`a&m
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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》。 { TI,|'>5[
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以下是用不同语言写成的Hello World程序的几个例子: L){V(*K '
Ada c]Gs{V]\
with Ada.Text_Io; use Ada.Text_Io; 2z*}fkJ
procedure Hello is Z'`\N@c#
begin gm
pY[
Put_Line ("Hello, world!"); `*[\b9>
end Hello; jI'?7@32`
z6 }p4
x]yIe&*('
汇编语言 * #E_KW1RV
>?OUs>}3y2
x86 CPU,DOS,TASM T u%XhXl:j
MODEL SMALL l?$X.CwX
IDEAL >]anTF`d
STACK 100H n Bd]rak'
$W=)-X\>
DATASEG -<k)|]8
HW DB 'Hello, world!$' qLN\>Z,3;
h^_^)P+;
CODESEG hSxK*.W*3
MOV AX, @data Go1xyd:k
MOV DS, AX R<_VWPlj
MOV DX, OFFSET HW 2q]ZI
MOV AH, 09H c7{s'ifG
INT 21H ovOV&Zt
MOV AX, 4C00H J~xm[^0
INT 21H `q\F C[W
END mi$C%~]5m
A4|7^Ay
4[#)p}V
x86 CPU,GNU/Linux,NASM @67GVPcxl
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 0LXu!iix
;Enter this into "hello.asm" then type: 9mp`LT
;"nasm -f elf hello.asm" ~CHcbEWk)W
;"ld hello.o -o hello"
E.;Hm;
;"./hello" A W6B[
-W.-m2:1
section .data ;data section declaration 3 ^x&G?)
msg db 'Hello World!',0AH ern\QAhX X
len equ $-msg ;string length jl}!UG
Xs|d#WbX
section .text ;code section declaration *;Mc X
global _start ;entry point (start of execution) 9{U@s
_start: mov edx,len ;string length 0[fBP\H"Wr
mov ecx,msg ;string start @`+\vmfD
mov ebx,1 ;file handle: stdout 'v^shGI%Ht
mov eax,4 ;sys_write wLiPkW
int 80h ;kernel system call _.R]K$U
M:(.aEe
mov ebx,0 ;return value Nt_sV7zzb
mov eax,1 ;sys_exit !<=(/4o&P
int 80h ;kernel system call !( +M
]mi\Y"RO
cAGM|%
x86 CPU,Windows,MASM32 bf=\ED ^
.386 -xLK/QAL
.model flat,stdcall ;nL7Hizo,
option casemap:none a#+$.e5
;Include 文件定义 |A,.mOT
include windows.inc y{<js!au
include user32.inc 8@+<W%+th
includelib user32.lib N-b'O`C
include kernel32.inc -hfkF+=U'
includelib kernel32.lib R\X;`ptT
;数据段 o<p4r}*AVJ
.data %-fS:~$
szCaption db 'A MessageBox!',0 p
%.Adxx
szText db 'Hello,world!',0 p<h(
;代码段 bC"h7$3
.code Ac{Tq iIv
start: 2Mq@5n
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK _t;^\"\
invoke ExitProcess,NULL z>0$SBQ-
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> cZ
!$XXA`
end start _1O .{O
qhG2j;
ReD]M@;
AWK 4;)t\9cy_
BEGIN { print "Hello, world!" } ^\ln8!;
^8bc<c:P
YahW%mv`d
BASIC 3!cenyE
传统版BASIC(例如GWBASIC): "x.iD,>k
jTNt!2 :B
10 PRINT "Hello, world!" 6 <`e]PT
20 END %Jd!x{a`>A
E_$nsM8?
或在提示符输入: ~ArRD-_t
p ^TCr<=
?"Hello, world!":END ^~TE$i<
ar
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现代版BASIC(例如Quick BASIC): kREFh4QO,
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Print "Hello, world!" v9,cL.0&
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以下的语句在Quick BASIC中同样有效: IO7gq+
hT_Q_1,
? "Hello,world!" )mI>2<Z!
Wi5Dl=
N}[!QE
BCPL hyJ&~i0P{J
GET "LIBHDR" ToKG;Ff 4b
w'_|X&@H
LET START () BE z19%!k
$( KRn[(yr`%
WRITES ("Hello, world!*N") yKK9b
$) @].!}tz
xzfugW
XV4aR3n{Q
Befunge }X=c|]6i^
"!dlrow olleH">v Uc,..
, U|.r -$|5P
^_@ ps8tr:T^=
'r_Fi5[q
7@e}rh?N-|
Brainfuck ^.g-}r8,
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ~,)D
n
+++++++++++++++.>.+++.------.--------.>+.>. 9mn~57`y
x./"SQ=R+
l O*
C %[~g84@
#include <stdio.h> -vc$I=b;
&Qj1uf92.
int main(void) Ma(Q~G
.
{ 91yYR*
printf("Hello, world!\n"); `HYj:4v'
return 0; sredL#]BA
} |/ 8!PKm
MT)q?NcG
I1s= =
C++ Qi=0[
#include <iostream> <tsexsw
i|,}y`C#
int main() H"Hl~ ~U
{ Tj!\SbnA[
std::cout << "Hello, world!" << std::endl; 3fX_XH1Q
return 0; /[/{m ]
} <"3${'$k`
lx2%=5+i;
BG.8 q4[
C++/CLI \Nf[8n#{
int main() r58<A'#
{ 3 m-g-
System::Console::WriteLine("Hello, world!"); kz("LI]
} pXBh^
agruS'c g
+R;LHRS%
C# (C Sharp) *:un+k
class HelloWorldApp (~5]1S}F
{ /F|VYl^_
public static void Main() Slv:CM
M
{ pStbj`Eq
System.Console.WriteLine("Hello, world!"); ?|}qT05
} d( ru5*p
} m]Qs
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%BMlcm7Ec
:f_oN3F p
COBOL 0yMHU[):~
IDENTIFICATION DIVISION. %z-s o?gF
PROGRAM-ID. HELLO-WORLD. 7Lj:m.0O^
n;vZY
ENVIRONMENT DIVISION. Bf+~&I#E
6CGk*s
DATA DIVISION. ![vy{U.:`
g3Hi5[-H
PROCEDURE DIVISION. W >}T$a}\
DISPLAY "Hello, world!". 8WpNlB+:{
STOP RUN. {x..>
4
q&NXF(
OUO'w6m!
Common Lisp +!nf?5;
(format t "Hello world!~%") fk1d iB
rf'A+q
Vu4LC&q
DOS批处理 \`2EfYJ{
@echo off U#PgkP[4
echo "Hello, world!"
Fe$o*r,
]-a/)8
G-]<+-Q$4
Eiffel u}_x
class HELLO_WORLD C8)s6
ni )G
creation tux`-F
make -{z[.v.p
feature ]]}iSw'
make is $$Ibr]$5
local yzL9Ic
io:BASIC_IO R*k;4*1u
do a0B%x!y^
!!io RX^8`}N
io.put_string("%N Hello, world!") CO@ kLI
end -- make #(a ;w
end -- class HELLO_WORLD (6[/7e)
l>BM}hS
OS>%pgv
Erlang #hu`X6s"
-module(hello). **AkpV)
-export([hello_world/0]). yOXEP
V,[[#a)y
hello_world() -> io:fwrite("Hello, World!\n"). ma QxU(
e8xNZG;
Pd
`~#!
Forth xH,e$t#@@~
." Hello, world!" CR 0lOan
|m*l/@1
>lek@euqw
Fortran $DnJ/hg;qD
WRITE(*,10) !B9Yw/Ba
10 FORMAT('Hello, World!') _PwPLSg
STOP @ IDY7x27
END :iQJ9Hdz
<1x u&Z7
:8N
by$#V
HTML vtK.7AF
<HTML> V;)+v#4{
<HEAD> V}Q`dEk2r
<TITLE> Hello World! </TITLE> k{|>!(Ax
</HEAD> K9nW"0>
<BODY> !Zc#E,
<p>Hello World!</p> B7[#z{8'#
</BODY> <RH%FhT
</HTML> ka(3ONbG
={6vShG)m
qkC{IBN92
HQ9+ QMX
H Zk|PQfi+
eE\T,u5:
g@?R"
INTERCAL ]S@DVXH
PLEASE DO ,1 <- #13 t)O]0)
s
DO ,1 SUB #1 <- #238 fmLDufx
DO ,1 SUB #2 <- #112 3{ea~G)[9
DO ,1 SUB #3 <- #112 Y$|KY/)H)
DO ,1 SUB #4 <- #0
j~9Y0jz_
DO ,1 SUB #5 <- #64 5dX0C
DO ,1 SUB #6 <- #238 c0X1})q$
DO ,1 SUB #7 <- #26 q"f7$
DO ,1 SUB #8 <- #248 GQjU="+
DO ,1 SUB #9 <- #168 m>!o
Yy_
DO ,1 SUB #10 <- #24 :r:x|[3.
DO ,1 SUB #11 <- #16 C&EA@U5X^
DO ,1 SUB #12 <- #158 AnZy
oa
DO ,1 SUB #13 <- #52 `J7@G]X;2
PLEASE READ OUT ,1 KO[Ty'
PLEASE GIVE UP R.GDCGAL
N];K
p"*xyex
Java cb. -AlqQ
public class Hello 1n.F`%YG
{ &,,:pL[
public static void main(String[] args) n-dC!t
{ Z`%^?My
System.out.println("Hello, world!"); _tQM<~Y]u\
} l Yj$3
} AmCymT3P*e
2@N-#x'
Dj0D.}`~
JSP oXVx9dZ
<% i"4;{C{s
out.print("Hello, world!"); ]\ZmK0q<:
%> ,,S 2>X*L
D_`~$QB`,
7o7FW=^
MIXAL dn_l#$ U
TERM EQU 19 the MIX console device number q+?q[:nR-
ORIG 1000 start address Y%zWaH
START OUT MSG(TERM) output data at address MSG ;1r|Bx <5
HLT halt execution }%y5<n*v\
MSG ALF "MIXAL" {t]8#[lo
ALF " HELL" l @E
{K|
ALF "O WOR" fP\*5|7%R
ALF "LD " VY=YI}E
END START end of the program 8@FgvWC
A9GSeW<
:j32 :/u
Nuva f]Rh<N$
<..直接输出..> >LVGNicQ
Hello, world! X&M04
LMp^]*)t
<..或者..> n6c+Okj
$KoGh_h
<. }+)q/]%
// 不带换行 e%=SgXl2t
? "Hello, world!" |`AJP
=&: |a$C
// 或者 g6?5
\@{TF((Y
// 带换行 WZviC_
?? 'Hello, world!' v++&%
.> {~'Iu8TvZ
,OMdLXr
?MSV3uODb
OCaml Q>G% *?
let main () = wS|hc+1
print_endline "Hello world!";; hij
9r z
>``
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Pascal J)H*tzg
program Hello; TCkMJs?
begin p$Floubh]
writeln('Hello, world!'); +'[/eW
end. p@d_Ru
>YcaFnY
^--8
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n
Perl VLbbn
#!/usr/local/bin/perl eyn-bw
print "Hello, world!\n"; Fgi;%
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B @8lD\
PHP -^< t%{d
<?php DX/oHkLD'
print("Hello, world!"); srS)"Jt
?> Y/L*0M.<
wxF\enDY
c?Mbyay
Pike +u`4@~D#
#!/usr/local/bin/pike o"p['m*g
int main() nIfp0U*
{ e0]%ko"
write("Hello, world!\n"); j=u)
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return 0; xg'xuz$U
} 79+i4(H
l4&
l)4Rx
.OlPVMFt
PL/I R I:kp.V
Test: procedure options(main); }LoMS<O-[
declare My_String char(20) varying initialize('Hello, world!'); 34J*<B[Njo
put skip list(My_String); 0~Xt_rN](
end Test; 5>VX]nE3!
Z4sS;k]}
G#1W":|`
Prolog "EZpTy}Ee
goal BxaGBK<k
write("hello,world!"). p&
Kfy~
|z0% q2(
cG1iO:
Python ^W~8)Rbf
#!/usr/local/bin/python VU+=b+B~m
print "Hello, world!" &_\;p-1:
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