“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。 =>dGL|
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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》。 e,5C8Q`Z
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以下是用不同语言写成的Hello World程序的几个例子: O<e{
Ada e*n@j
with Ada.Text_Io; use Ada.Text_Io; W,-g=6,
procedure Hello is xp9pl[l
begin yH}s<@y;7
Put_Line ("Hello, world!"); t. '!`5G
end Hello; ))i }7chc
N"y)Oca{
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汇编语言
JSg$wi8
Y)a^(!<H<
x86 CPU,DOS,TASM evJ.<{M
MODEL SMALL 8h4'(yGQQW
IDEAL Yir
[!{
STACK 100H gl_^V&c
TNr :pE<
DATASEG BV+ Bk+
HW DB 'Hello, world!$' eNu7~3k}
Jdp3nzM^^@
CODESEG ++#5
MOV AX, @data {GcO3G#FZ
MOV DS, AX ?KI,cl
MOV DX, OFFSET HW aoa)BNs
MOV AH, 09H F.v{-8GV
INT 21H 1&o|TT/
MOV AX, 4C00H a+PzI x2
INT 21H @oad,=R&
END 7fX<511(
63~
E#Dt4
9?3&?i2-
x86 CPU,GNU/Linux,NASM {$Gd2gO
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). c:u5\&~{
;Enter this into "hello.asm" then type: c\V7i#u[d;
;"nasm -f elf hello.asm" )@'}\_a3[]
;"ld hello.o -o hello" C=4Qlt[`
;"./hello" P}G+4Sk
D{~fDRR
section .data ;data section declaration 8Dm%@*B^b
msg db 'Hello World!',0AH K:Q<CQ2
len equ $-msg ;string length iRi-cQVy
[R7Y}k:9U
section .text ;code section declaration s&!a
global _start ;entry point (start of execution) '-/xyAzS
_start: mov edx,len ;string length k,F6Tx
mov ecx,msg ;string start xpx\=iAe
mov ebx,1 ;file handle: stdout \K<QmK
mov eax,4 ;sys_write a+T.^koY
int 80h ;kernel system call K>l~SDcZ3
`%Al>u5
mov ebx,0 ;return value 0tB0@Wj
mov eax,1 ;sys_exit y
{<9]'
int 80h ;kernel system call h.s+)fl\
S+ ^E.
(41|'eB\\
x86 CPU,Windows,MASM32 ^4Ah_U
.386 9Ly]DZ;L
.model flat,stdcall f &wb
option casemap:none "{Eta
;Include 文件定义 \<6CZ
include windows.inc usL*
x9i
include user32.inc ,tJ"
5O3-
includelib user32.lib 'D"C4;X
include kernel32.inc 'W,jMju
includelib kernel32.lib 1&(V
;数据段 ;x1PS
.data ~B(4qK1G
szCaption db 'A MessageBox!',0 f_Av3
szText db 'Hello,world!',0 X=8{$:
;代码段 bl(RyAgA
.code j;iAD:nf
start: GU8sO@S5#
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !V g`
invoke ExitProcess,NULL }HePZ{PLM
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> +|89>}w4
end start P &e\)Z|
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a1y-3z
AWK } c}_<#I
BEGIN { print "Hello, world!" } w+E,INdi
pKrN:ExB"\
Yv!a88+A8M
BASIC E6gI,f/p0X
传统版BASIC(例如GWBASIC): -FQ 'agf@&
)Z ?Ym.0/
10 PRINT "Hello, world!" /U)D5ot<
20 END *m,k(/>
Nf"r4%M<6
或在提示符输入: -rli(RR)|
SHo$9+
?"Hello, world!":END /&+tf*
I\JGs@I
现代版BASIC(例如Quick BASIC): s '\Uap
Jrpx}2'9:a
Print "Hello, world!" 25[I=ZdS
s;vHPUB\n
以下的语句在Quick BASIC中同样有效: vf%&4\ib
I4q9|'-yx
? "Hello,world!" ,lA s
0h\smqm
-Z
Ugx$
BCPL ndz]cx
GET "LIBHDR" vucxt }Ti
Om@C
X<(9C
LET START () BE 2!J&+r
$( K;z7/[%
WRITES ("Hello, world!*N") t*T2Z-!P
$) }m;,Q9:+m^
i,4>0o?
lun\`f 5Q
Befunge '>0fWBs
"!dlrow olleH">v <drODjB
, {|:;]T"y
^_@ jesGV<`?l
Rt!FPoN,y
usCt#eZK
Brainfuck aV|hCN~
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< LS*y
+++++++++++++++.>.+++.------.--------.>+.>. YLv'43PL
es&vMY
Y+*0~xm4
C O-I[igNl
#include <stdio.h> q):5JXql~
9-DZU,`P
int main(void) &Ao+X=qw
{ ?ztkE62t
printf("Hello, world!\n"); /qGf 1MHD
return 0; \2"I;
} 5r8<7g:>C
q~ZNd3O
78# v
C++ i?g5_HI
#include <iostream> K&70{r
LNpup`>`
int main() giIWGa.a+
{ -w_QJ_z_
std::cout << "Hello, world!" << std::endl; Xudg2t)+K
return 0; _p&]|~a
} [@b&? b~K
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pDIVZC
C++/CLI u TK,&
int main() k+C zj
{ 2fR02={-
System::Console::WriteLine("Hello, world!"); 2Mmz %S'd
} khrb-IY@
s,=i_gyPQ
orfO^;qTY
C# (C Sharp)
!0@Yplj
class HelloWorldApp U4-g^S[
{ Z99>5\k
public static void Main() D.Q=]jOs
{ ()+<)hg}2
System.Console.WriteLine("Hello, world!"); ^,8)iV0j_
} J)~L
} L=8<B=QT$
U`d5vEhT
TDNQu_E
COBOL n3Z5t
IDENTIFICATION DIVISION. fb8g7H|
PROGRAM-ID. HELLO-WORLD. s4SG[w!d
9qz6]-K
ENVIRONMENT DIVISION. 7~aM=8r
I@%t.%O Jp
DATA DIVISION. >JCM.I0_|
&<J[Q%2
PROCEDURE DIVISION. WIf0z#JMJm
DISPLAY "Hello, world!". %_L\z*+
STOP RUN. 5>j)kx=J9
i9A+gtd
TAF
PawH
Common Lisp h`k"A7M
(format t "Hello world!~%") "a1n_>#Fb
6&l+0dq
&LVn6zAba
DOS批处理 j eX^}]x|%
@echo off 3]UUG
echo "Hello, world!" RUT,Y4 b
FPI;Jx6W'
7C ,UDp|
Eiffel .wu
xoq
class HELLO_WORLD M:3h e
}36QsH8
creation :1^R9yWA4
make A"D,Kg
S
feature ?)X,0P'
make is )'%$V%9
local [4C:r!
io:BASIC_IO [uls8
"^/j
do ;b(p=\i
!!io ,%Up0Rr,
io.put_string("%N Hello, world!") &PK\|\\2
end -- make "7V2lu
end -- class HELLO_WORLD :8+Ni d)
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rT5Ycm@
Erlang <-S%kA8
-module(hello). a@* S+3
-export([hello_world/0]). ";Rtiiu
$8[r9L!
hello_world() -> io:fwrite("Hello, World!\n"). !PJ 6%"
UE ,t8j
x{c/$+Z[
Forth 4NG?_D5&
." Hello, world!" CR WRDjh7~Efn
wG<(F}VX
:!b'Vk
Fortran 5<j%EQN|D
WRITE(*,10) LLXVNO@e+
10 FORMAT('Hello, World!') P2'DD 3
STOP ,gOOiB
}
END sWblFvHqrU
SD$h@p=!=
bk^TFE1l
HTML J6G(_(d
<HTML> +d!v}aJ
<HEAD> %\r!7@Q
<TITLE> Hello World! </TITLE> ez!C?
</HEAD> 8o0%@5M
<BODY> 'n$%Ls}S
<p>Hello World!</p> ql?=(b;D
</BODY> hk;7:G
</HTML> %v7[[U{T
Zg`Mz
_?
'@CR\5 @
HQ9+ OP|8S k6
r
H X>.
NFB
*@)O7vB
R@#G>4
INTERCAL z,bQQ;z9
PLEASE DO ,1 <- #13 70mpSD3
DO ,1 SUB #1 <- #238 B0!"A
DO ,1 SUB #2 <- #112 jDN ]3Y`
DO ,1 SUB #3 <- #112 `o?Ph&p}
DO ,1 SUB #4 <- #0 1=a>f"cyf
DO ,1 SUB #5 <- #64 VZ](uF BY
DO ,1 SUB #6 <- #238 1`9xIm*9w
DO ,1 SUB #7 <- #26 !i%"7tQ3$
DO ,1 SUB #8 <- #248 zyg
}F
DO ,1 SUB #9 <- #168 e^Ky<*Y
DO ,1 SUB #10 <- #24 M7+h(\H]2
DO ,1 SUB #11 <- #16 &o97u4xi
DO ,1 SUB #12 <- #158 3lq Mucr
DO ,1 SUB #13 <- #52 TkO[rAC
PLEASE READ OUT ,1 4bJZmUb
PLEASE GIVE UP Mz;[ +p
xOHgp=#D
]$\|ktY!
Java j$Je6zq0x
public class Hello 4[-*~C|W5
{ ee#):
-p
public static void main(String[] args) JiU9CeD3
{ ?8mlZ
X9C
System.out.println("Hello, world!"); U}l14
} Iu*^xn
} C2w2252T
m&iH2|
Tl|:9_:t
JSP "y<?Q}1
<% $Qy7G{XJ[^
out.print("Hello, world!"); d@G}~&.|
%> -tI'3oT1
-}6xoF?
d/e|'MPX
MIXAL LJTQaItdqJ
TERM EQU 19 the MIX console device number d{de6 `
ORIG 1000 start address 3#45m+D
START OUT MSG(TERM) output data at address MSG e=QK}gzX
HLT halt execution uH;-z_Wpn!
MSG ALF "MIXAL" :BGA.
ALF " HELL" D\YE^8/
ALF "O WOR" @M8|(N%
ALF "LD " 2JS`Wqy
END START end of the program Z0>DNmH*
@hImk`&[N
#vqo -y7@
Nuva KyO8A2'U
<..直接输出..> $VQtwuYt
Hello, world! =FT98H2*|
z]bwnJfd
<..或者..> {gaai
?[MsQQd~
<. |fY/i]
Ax
// 不带换行 KB!|B.ChN(
? "Hello, world!" zPKr/
?`Y\)'}
// 或者 <x),,a=X
:g\rQazxO
// 带换行 LR,7,DH$9'
?? 'Hello, world!' gxGrspqg
.> kzS=g|_
^v@4|E$
N9rBW
OCaml O!Z|r?
let main () = @v*/R%rv t
print_endline "Hello world!";; 5Fm=/o1
`j9$T:`
m3g2b _;
Pascal yRYWch
program Hello; R,
8s_jN
begin x)_@9ldYv
writeln('Hello, world!'); m%8qZzqk
end. ;!T{%-tP
?n\*,{9
@E53JKYhY
Perl P~FUS%39"o
#!/usr/local/bin/perl 1Fi86
print "Hello, world!\n"; qJ_1*!!91
=)OC|?9C\
.6pOvGKb
PHP JkA|Qdj~Mr
<?php g+C!kaC)
print("Hello, world!"); S?0)1O
?> NS,5/t
Z2bcCIq4
sF+=KH
Pike b( ^^m:(w
#!/usr/local/bin/pike swc@34ei\
int main() 9(!]NNf!
{ cDXsi#Raj
write("Hello, world!\n"); B )JM%r
return 0; O;]?gj 1@
} Sb:T*N0gS
cxYfZ4++m
]> Y/r-!
PL/I @)8]e
S7
Test: procedure options(main); 7CB#YP?E
declare My_String char(20) varying initialize('Hello, world!'); u.|~$yP.!
put skip list(My_String); w h$jr{
end Test; i(6J>^I
dy>|cj
n!He&
Prolog RX2{g^V7
goal pD@zmCU
write("hello,world!"). fH8!YQG8$
&VWlt2-R0h
Cv=GZGn-
Python ~L+]n0*
#!/usr/local/bin/python ^Dx#7bsDZR
print "Hello, world!" 4rU!4l
G7* h{nE
em]xtya
REXX &4$oudn
say "Hello, world!" v&MU=Tcqi
r5/R5Ga^
c~dM`2J,
Ruby tO.$+4a
#!/usr/bin/ruby emA!Ew(g
print "Hello, world!\n" (5uJZ!m
:a<hQ|p
u:`y]
Scheme g3?U#7i
(display "Hello, world!") e"+dTq8W
(newline) hQgN9S5P
I&1!v8
C/v}^#cLD
sed (需要至少一行输入) H*W):j}8
sed -ne '1s/.*/Hello, world!/p' %>XN%t'6aT
| D.C!/69
hWcTI{v
Smalltalk i.rU&yT%
Transcript show: 'Hello, world!' 77:'I
wh~sZ
uf@U:V
SNOBOL O=jN&<rb
OUTPUT = "Hello, world!" DPJh5d
END xKJ>gr"w#
@5}gsC
S@:B6](D$
SQL U 0ZB^`
create table MESSAGE (TEXT char(15)); (clU$m+oXX
insert into MESSAGE (TEXT) values ('Hello, world!'); Ls:=A6AGM
select TEXT from MESSAGE; ->yeJTsE9
drop table MESSAGE; <4D%v"zRP
BGjb`U#%3
X_70]^XL
Tcl mPmB6q%)]
#!/usr/local/bin/tcl \].J-^=
puts "Hello, world!" WSI
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(Imp
$
IG / $!*E
TScript M<