“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。 'F%h]4|1
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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》。 *kt|CXxAS8
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以下是用不同语言写成的Hello World程序的几个例子: $ba*=/{[q
Ada b:PzqMh{G
with Ada.Text_Io; use Ada.Text_Io; jL{k!V`s
procedure Hello is ok1w4#%,
begin ,`ba?O?*G
Put_Line ("Hello, world!"); 3>v-,S+
end Hello; }vb.>hy
2U`!0~pod
mhMTn*9
汇编语言 GP(nb,
58t_j54
x86 CPU,DOS,TASM g;7W%v5wqk
MODEL SMALL *EPJeblAV
IDEAL -C2[ZP-
STACK 100H *qJHoP;
8{
+KNqz
DATASEG %KPQ|^WE
HW DB 'Hello, world!$' 3F8KF`*
<Zo{D |hW
CODESEG !ir%Pz^)
MOV AX, @data ?jU 3%"
MOV DS, AX QuBA'4ht
MOV DX, OFFSET HW #bS}?fj
MOV AH, 09H _Qq lOc9
INT 21H SAU` u]E
MOV AX, 4C00H dn&484
INT 21H q>6RO2,
END Ekn3ODz,
sD9OV6^{?K
WQ9VcCY
x86 CPU,GNU/Linux,NASM On(.(7sNc
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Q yhu=_&
;Enter this into "hello.asm" then type: F9>"1
;"nasm -f elf hello.asm" xS; tmc
;"ld hello.o -o hello" y~z&8XrH
;"./hello" O[$XgPM
ltv~Kh
section .data ;data section declaration )=!|^M
msg db 'Hello World!',0AH {*"\68e
len equ $-msg ;string length YlXqj\a
\' &,9lP
section .text ;code section declaration %Q=rm!Syv
global _start ;entry point (start of execution) dpT?*qLM
_start: mov edx,len ;string length "g/UpnH
mov ecx,msg ;string start " eS-i@
mov ebx,1 ;file handle: stdout !/]z-z2>
mov eax,4 ;sys_write wauM|/KG
int 80h ;kernel system call zj$Ve
4m%Yck{R
mov ebx,0 ;return value {rzQ[_)EC
mov eax,1 ;sys_exit @o&UF-=MW(
int 80h ;kernel system call KvjH\;78
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R8Dn
GR
x86 CPU,Windows,MASM32 !{ !(yP_
.386 _`Dz%(c
.model flat,stdcall yQq|!'MK k
option casemap:none CQA^"Ll
;Include 文件定义 \Hu?K\SWs
include windows.inc D7Ds*X`!l
include user32.inc !>fi3#Fi
includelib user32.lib 16"L;r
include kernel32.inc [4-u{Tu
includelib kernel32.lib } :T}N]
;数据段 t'DIKug&
.data Mn*5oH
szCaption db 'A MessageBox!',0 ]{AHKyA{:
szText db 'Hello,world!',0
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;代码段 -3SRGr
.code i x_a
start: ;(s.G-9S
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK k~]\kv=
invoke ExitProcess,NULL nIl<2H]F`
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kZQ$Iv+^(
end start rUmnv%qTS
,%KMi-w]q,
R7Ns5s3X
AWK 9abn6S(XpJ
BEGIN { print "Hello, world!" } _<jccQ
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BASIC >+S* Wtm5
传统版BASIC(例如GWBASIC): ;zo?o t/
2vW@d[<J
10 PRINT "Hello, world!" X'5+)dj
20 END ?Q6ZZQ~
[jF\"#A
或在提示符输入: EU()Nnm2
tmC9p6%
?"Hello, world!":END Ot3+<{
e(k$k>?
现代版BASIC(例如Quick BASIC): 7P DD
gC/-7/}
Print "Hello, world!" Ec['k&*7,
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以下的语句在Quick BASIC中同样有效: _1?Fyu&<5
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? "Hello,world!" !B&1{
7@i2Mz/eV
_ 3>|1RB
BCPL y{\(|j
GET "LIBHDR" 0'Qo eFKG
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LET START () BE d?(eL(W
$( LWP&Si*j
WRITES ("Hello, world!*N") b"z9Dp v
$) XcQ'(
2n5{H fpY
E%>){Y)
Befunge FZtILlw
"!dlrow olleH">v |y7#D9m
, ;AgXl%Q
^_@ L QP4#7
o8S)8_3
~TALpd
Brainfuck 5P
< F
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ,h$j%->U
+++++++++++++++.>.+++.------.--------.>+.>. L}%4YB
ppM^&6x^
AT,?dxP J
C
+0O^!o
#include <stdio.h> #oD*H:%*
S#,
E)h/
int main(void) Mkadl<
{ `F1 ( v
printf("Hello, world!\n"); T1r^.;I:
return 0; CI6qDh6
} j!<RY>u
%j?<v@y
1~P ^g`
C++ GPnSdGLC
#include <iostream> (s.S
n(E
,b8q$R~\
int main() D>Ph))QI
{ ~2*8pb 4
std::cout << "Hello, world!" << std::endl; L`{EXn[
return 0; c/E6}OWA
} - '5OX/Szq
SpUcrK;1
675x/0}GO
C++/CLI bbU{ />yW
int main() L3-tD67oa
{ $?u ^hMU=
System::Console::WriteLine("Hello, world!"); W:16qbK
} jVpk) ;vC
e
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W=EvEx^?%
C# (C Sharp) ul$YV9[\
class HelloWorldApp Q!VPk~~(
{ DOm5 azO!>
public static void Main() V OViOD
{ ~IKPi==@,
System.Console.WriteLine("Hello, world!"); hOSkxdi*^
} K}U}h>N
} nUvxO `2
*:}NS8hP
lS(?x|dO
COBOL }9xEA[@;
IDENTIFICATION DIVISION. DN@T4!
PROGRAM-ID. HELLO-WORLD. 6Hn3
/IC7q?avQN
ENVIRONMENT DIVISION. &V&0kp@+
#`mo5
DATA DIVISION. V4OhdcW{
dSb|hA}@
PROCEDURE DIVISION.
WoiK _Ud
DISPLAY "Hello, world!". _azg
0.)
STOP RUN. 1v4(
cFoDR
PQRh5km
Common Lisp 8vM}moper
(format t "Hello world!~%") +M6qbIO
t "J"G@1)
$Rsf`*0-
DOS批处理 +]Y&las
@echo off \dbjh{
echo "Hello, world!" 5xi f0h-`
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h>
0*"auGuX
Eiffel |.Bb Pfe8f
class HELLO_WORLD }06
M ,8r{[2
creation RvYH(!pQ
make Poacd;*
feature B8_w3;x
make is z$E+xZ
local .Mw'P\GtM
io:BASIC_IO ho_;;y
do 9LGJ -gL
!!io OZ1+` 4 v
io.put_string("%N Hello, world!") F
t%f"Z
end -- make H>[1DH#b
end -- class HELLO_WORLD dvk?A$
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*lg1iP{]
Erlang 2i4FIS|z0
-module(hello). %,GY&hTw
-export([hello_world/0]). &2{h]V6
nv(Pwb3B
hello_world() -> io:fwrite("Hello, World!\n"). k=O2s'F`
mk1;22o{TX
&eT)c<yhyK
Forth "';'*x
." Hello, world!" CR _`L,}=um'
uYS?# g
r:y*l4
Fortran EW1L!3K
WRITE(*,10) ~!'%m(g
10 FORMAT('Hello, World!') abUn{X+f~
STOP 7Rj!vj/
END 2s;/*<WM
BUv;BzyV
<oPo?r|oM|
HTML O: sjf?z
<HTML> *"0Yr`)S
<HEAD> `pN"T?Pk
<TITLE> Hello World! </TITLE> 6z"fBF
</HEAD> BG"~yyKA
<BODY> AL}c-#GG
<p>Hello World!</p> &TSt/b/+W
</BODY> J}TS-j0
</HTML> Fm{Ri=X<:
^DVr>u
qI<6% ^i
HQ9+ ,Z#t-?
H Vy{=Y(cpF2
LDW":k|
X_|8CD-@6
INTERCAL AShJtxxa
PLEASE DO ,1 <- #13 '+Dn~8Y+9
DO ,1 SUB #1 <- #238 xzy7I6X
DO ,1 SUB #2 <- #112 ];^A8?
DO ,1 SUB #3 <- #112 0kpRvdEr-
DO ,1 SUB #4 <- #0 `Qv7aY
DO ,1 SUB #5 <- #64 abWmPi
DO ,1 SUB #6 <- #238 on(F8%]zE
DO ,1 SUB #7 <- #26 9C$b^wHd
DO ,1 SUB #8 <- #248 (}"r 5
DO ,1 SUB #9 <- #168 WO)rJr!C
DO ,1 SUB #10 <- #24 T^aEx.`O}`
DO ,1 SUB #11 <- #16 "4H&wHhT!
DO ,1 SUB #12 <- #158 ,$mnD@)
DO ,1 SUB #13 <- #52 2<yi8O\
PLEASE READ OUT ,1 "}Ch2K
PLEASE GIVE UP 5P
-IZ8~$
]o_Z3xXUa
R(=Lhz6R4
Java v@LK3S/!3
public class Hello EkEM|<GNd
{ q+3Z3v
public static void main(String[] args) 7NMQUN7k'
{ 1s=M3m&H
System.out.println("Hello, world!"); RhnSQe
} ^P~%^?(
} y;yXOE_
&'N{v@Oi)
PNd]Xmv)
JSP *pk*ijdB
<% v6HBO#F'V{
out.print("Hello, world!"); m-dne/%_
%> 234OJ?
(i1FMd}G
x$J1%K*
MIXAL c\-5vw||b
TERM EQU 19 the MIX console device number ,<zGvksk
ORIG 1000 start address :qc@S&v@]
START OUT MSG(TERM) output data at address MSG *O#%hTYq
HLT halt execution h$DFp
MSG ALF "MIXAL" EJ.oq*W!*J
ALF " HELL" 7qA0bUee5
ALF "O WOR" ^L+*}4Dr
ALF "LD " wRgmw
4
END START end of the program \$/)o1SG
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Q$Ga.fI
Nuva 8t!(!<iF0
<..直接输出..> 6,G1:BV{K
Hello, world! n&D<l '4
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<..或者..> e Pq(:ih
P\tP0+at
<. cZk?o
// 不带换行 /WRS6n
? "Hello, world!" Yewn
-/ ;y*mP
// 或者 C$vKRg\o
& 1p\.Y
// 带换行 9AD`,]b
?? 'Hello, world!' 6b~Zv$5^Y-
.> NEa:
y{,HpPp#o
7"2L|fG
OCaml x9Y1v1!5Pu
let main () = ,aeQXI#@
print_endline "Hello world!";; 01g=Cg
dFS>uIT7X
5B#q/d1/a
Pascal cTCo~Pk4
program Hello; k<Z^93 S
begin [4"1TyW
writeln('Hello, world!'); gS _)(
end. f_}/JF
0;2i"mzS\
u =z$**M^
Perl SUINV_>7
#!/usr/local/bin/perl '$YB
-
print "Hello, world!\n"; <`i"5`J
=dx!R ,Bw
'A;G[(SYy
PHP "~(qp_AI
<?php btHN
print("Hello, world!"); 7Ab&C&3
?> DZ92;m
C8rD54A'M
GR@!mf
Pike rZ2X$FO@
#!/usr/local/bin/pike &lbxmUeU
int main() !O6e,l
{ 26PUO$&b.
write("Hello, world!\n"); 'bJ!~ML&
return 0; g6{.C7m
} [bk2RaX:i
bO 2>ced
1j0OV9 -|
PL/I S-}MS"
Test: procedure options(main); Z"#eN(v.N
declare My_String char(20) varying initialize('Hello, world!'); g}"`@H(9r3
put skip list(My_String); %KHO}gad1
end Test; +PgUbr[p
0D/u`-
"X0"=1R~
Prolog 4YDK`:4I~
goal PtCO';9[
write("hello,world!"). g\S@@0T{0
KY34Sc
sd9$4k"
Python !Ob
#!/usr/local/bin/python =M'M/vKD
print "Hello, world!" ]Q,;5>#W
PPk\W7G
:f%FM&b
REXX (XA=d
4
say "Hello, world!" <k?ofE1o
Lh3>xZy"-z
s3qWTdM
Ruby Mx{VN
P
#!/usr/bin/ruby ^ CVhV
print "Hello, world!\n" kR$>G2$!
D,q=?~
mkgGX|k;
Scheme Mx<z34(T
(display "Hello, world!") ie|I*;#
(newline) arJ4^ d
)*#Pp )Q
h07Z.q ;
sed (需要至少一行输入) e9e%8hL
sed -ne '1s/.*/Hello, world!/p'
bj23S&
\$:KfN>WY
KilgeN:
Smalltalk [M>Md-pj
Transcript show: 'Hello, world!' 7jvy]5y8&~
N<lejZ}!q
uo0g51%9
SNOBOL [
[]'U'
OUTPUT = "Hello, world!" Ft%HWGE
END M
S
3?#b
4w,=6|#
0\v98g<[+
SQL piYv}4;:(
create table MESSAGE (TEXT char(15)); Vp8t8X1`
insert into MESSAGE (TEXT) values ('Hello, world!'); qu]ch&"?U
select TEXT from MESSAGE; RtVy^~=G
drop table MESSAGE; ~3byAL
O@JgVdgf
,XT#V\qne
Tcl )E;+C2G
#!/usr/local/bin/tcl ~RcI+jR)
puts "Hello, world!" 1d/-SxhZ
i`[5%6\"&
C!Cg.^;
TScript jVP70c
? "Hello, world!" s ^NO(
hsV+?#I
we'<Y
Turing dw
%aoe
put "Hello, world!" iVq4&X_x
C${{&$&