“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。 ]'0}fuV
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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》。 1CS\1[E
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以下是用不同语言写成的Hello World程序的几个例子: <qBM+m$|)
Ada xqv&^,ic
with Ada.Text_Io; use Ada.Text_Io; #eKH'fE
procedure Hello is "?'9\<>
begin c']m5q39'
Put_Line ("Hello, world!"); :{aiw?1
end Hello; +O7GgySx
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rC
g!`^!Q/($
汇编语言 sLc,Dx"+
N <M6~
x86 CPU,DOS,TASM bDq<]h_7
MODEL SMALL xr31<4B
IDEAL WFvVu3
STACK 100H ".kH5(:
W A#y&
DATASEG zuJ@@\75
HW DB 'Hello, world!$' m=60a@o]
g2YE^EKU~
CODESEG z#6(PZC}
MOV AX, @data z7&m,:M
MOV DS, AX =RHIB1
MOV DX, OFFSET HW l(8@?t^;
MOV AH, 09H #d$lN}8
INT 21H r>6FJ:Tx
MOV AX, 4C00H ]#W9l\
INT 21H 6U1_Wk?
END 2F/oWt|w?
NH+N+4dEO
##s:Ww
x86 CPU,GNU/Linux,NASM *1*i5c
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). m1RjD$fM
;Enter this into "hello.asm" then type: =Nr?F'<
;"nasm -f elf hello.asm" (XV+aQ \A
;"ld hello.o -o hello" qU ,{jD$
;"./hello" p & i+i
!^Q4ZL,-
section .data ;data section declaration ;Ao`yC2(v
msg db 'Hello World!',0AH sRC?l_n;
len equ $-msg ;string length S) `@)sr
qCm8R@
section .text ;code section declaration VwT&A9&{8
global _start ;entry point (start of execution) .RWq!Z=)3
_start: mov edx,len ;string length _D8:p>=
mov ecx,msg ;string start O]t)`+%q
mov ebx,1 ;file handle: stdout <=%G%V_s
mov eax,4 ;sys_write S>d7q
int 80h ;kernel system call )gk
tI!
gj4ONmY
mov ebx,0 ;return value *56q4\1
mov eax,1 ;sys_exit "J2v8c
int 80h ;kernel system call &
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dA0o{[o=
fjm3X$tR
x86 CPU,Windows,MASM32 Y0ACJ?|
.386 l7(p~+o?h>
.model flat,stdcall QiNLE'19^
option casemap:none 27Vx<W
;Include 文件定义 CW,|l0i
include windows.inc e_3B\59k
include user32.inc "j=E8Dd}
includelib user32.lib e]V7
7oc
include kernel32.inc YOUX
includelib kernel32.lib ~oRT@E
;数据段 H5be 5
.data C-/+n5J
szCaption db 'A MessageBox!',0 Sre:l'.
szText db 'Hello,world!',0 )O>M~
;代码段 Q!h+1fb
.code y)3OQ24
start: xo{z4W
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK +;
=XiB5R
invoke ExitProcess,NULL /$j,p E=
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> yjM!M|
end start }*7Gq
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Gg%pU+'T
AWK od*#)
BEGIN { print "Hello, world!" } >P-'C^:V=
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uC2qP)m,^
BASIC '~xiD?:
传统版BASIC(例如GWBASIC): Sy^@v%P'A
WmE4TL^8?
10 PRINT "Hello, world!" |oR#j
`
20 END vhN6_XD
<SRo2rjRa
或在提示符输入: @`aPr26>?
|pE
~
?"Hello, world!":END X rut[)H
. Fm| $x
现代版BASIC(例如Quick BASIC): q0@b d2}
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Print "Hello, world!" \# 1p
e?;
以下的语句在Quick BASIC中同样有效: :d@RN+U
y4Nam87;/?
? "Hello,world!" VA%4ssy
|lh&l<=(f
9<5ii
BCPL h#uk-7
GET "LIBHDR" Cm-dos
h2
>a_0"
LET START () BE 1JZhcfG
$( @ZtvpL}e
WRITES ("Hello, world!*N")
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$) 3H%bbFy
S~GS:E#
?Xqkf>
Befunge 'N/u<`)
"!dlrow olleH">v cgR8+o
, t]xR`Rr;X
^_@ UhSaqq
5w</Ga
9dp1NjOtAc
Brainfuck la`f@~Bbr1
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< vh^?M#\
+++++++++++++++.>.+++.------.--------.>+.>. ,+FiP{`
+aOX{1w
3*oZol/
C Tlk!6A:
#include <stdio.h> "4.A@XsY
AdRK )L
int main(void) ephvvj~zW4
{ KnUVR!H|
printf("Hello, world!\n"); !ZayN
return 0; "f-HOd\=
} M?I^`6IOc8
{ApjOIxk
qrcir-+
C++ yRt7&,}zL
#include <iostream> MkM`)g 5
?F|F~A8dr
int main() C%"aj^u
{ ;;Jx1Q
std::cout << "Hello, world!" << std::endl; =@MJEo` D
return 0; iT</
} RIFTF
R
LPkl16yZ
|^gnT`+
C++/CLI MK <\:g
int main() P5v;o9B&
{ LVJn2t^
System::Console::WriteLine("Hello, world!"); VhU,("&pm
} c+:^0&l
LmP pt3[
^(7Qz&q
C# (C Sharp) p-,Bq!aG$
class HelloWorldApp *Z3b6X'e
{ /$|-!e<5b\
public static void Main() U=[isi+7
{ xn1,
o
MY=
System.Console.WriteLine("Hello, world!"); {X-a6OQj
} i ~rb-~o
} rg I Z
|]b,% ?,U
2Vxx
COBOL c;88Wb<|W
IDENTIFICATION DIVISION. )<.y{_QUN
PROGRAM-ID. HELLO-WORLD. 8*&YQId~
,Eo\(j2F.
ENVIRONMENT DIVISION. h/*@ML+bB8
2g;Id.i>
DATA DIVISION. {N@Pk[!
G}@a]EGm
PROCEDURE DIVISION. Xi!e=5&Pa
DISPLAY "Hello, world!". ~Sx\>wBlc
STOP RUN. }+K=>.
vZXdc+2l
@6H 7
Common Lisp UtHloq(r
(format t "Hello world!~%") J@qLBe(v
n_*.i1\'w
~gg&G~ET
DOS批处理 gq~"Z[T
@echo off v(P <_}G
echo "Hello, world!" ^[Y/ +Q.J
T5wVJgN>
*O7PH1G
Eiffel y8dOx=c
class HELLO_WORLD wqgKs=y
o 9d|XY_
creation ~iq=J5IN#
make X#o;`QM
feature _.SpU`>/f
make is o+Q2lO5
local aTs9lr:
io:BASIC_IO SUD~@]N1
do :)%cL8Nz]$
!!io Yh{5O3(;
io.put_string("%N Hello, world!") x\YVB',h
end -- make So4#n7
end -- class HELLO_WORLD $dug"[
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w4l]rH
Erlang 4|DN^F~iut
-module(hello). @?&
i
-export([hello_world/0]). (t,mtdD#1
:0Fc E,1
hello_world() -> io:fwrite("Hello, World!\n"). ;Pvnhy
1D%E})B6
8tzL.P^
Forth W3n[qVZIC
." Hello, world!" CR <]*Jhnx/
\8USFN~(Y
Is9.A_0h
Fortran Y\F4
WRITE(*,10) CiTWjE?|7
10 FORMAT('Hello, World!') 9fsc>9
STOP )M@^Z(W/a
END F1p|^hYDW
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n%!50E6*:
HTML %1)J Rc
<HTML> T#HF!GH]
<HEAD> .`oKd@I*"
<TITLE> Hello World! </TITLE> W!1
B~NH#
</HEAD> Ii>#9>!F
<BODY> }d@;]cps
<p>Hello World!</p> ::@JL
</BODY> J!}R>mR
</HTML> kH=qJ3Z
/9| 2uw`
]-l4
HQ9+ *=77|Dba
H |C>\ku*
-o57"r^x
`!ZkWF6
INTERCAL ^UyN)eX
PLEASE DO ,1 <- #13 {'#7b# DB>
DO ,1 SUB #1 <- #238 jJ?G7Q5l
DO ,1 SUB #2 <- #112 }MtORqK
DO ,1 SUB #3 <- #112 M`xI N~
DO ,1 SUB #4 <- #0 K]&GSro
DO ,1 SUB #5 <- #64 `R*!GHro
DO ,1 SUB #6 <- #238 jEK{47i v
DO ,1 SUB #7 <- #26 &09G9G snQ
DO ,1 SUB #8 <- #248 5xa!L@)`wF
DO ,1 SUB #9 <- #168 X"%eRW&qu/
DO ,1 SUB #10 <- #24 A[f`xE
DO ,1 SUB #11 <- #16 E cd~H+
DO ,1 SUB #12 <- #158 rK4
pYo
DO ,1 SUB #13 <- #52 ?S.LGc
PLEASE READ OUT ,1 B9'2$s+Z;
PLEASE GIVE UP S}K-\[i?
>uE<-klv
eYPIZ{S7h
Java Gz7,g
Y
public class Hello &+/$~@OK
{ {<i(aq?
public static void main(String[] args) ""jl
{ RI BB*
System.out.println("Hello, world!"); !X=93%
} t`1~5#?Du(
} " pL5j
u3HaWf3
Apkb!"}>
JSP 0- u,AD
<% CC]q\%y-_
out.print("Hello, world!"); !@>:k3DC&
%> ,Uy~O(Ft
Po.izE!C
P+,YWp
MIXAL g5
y*-t
TERM EQU 19 the MIX console device number ^;@!\Rc
ORIG 1000 start address vQ[ TcV
START OUT MSG(TERM) output data at address MSG e(9K.3@{
HLT halt execution e{.P2rnh
MSG ALF "MIXAL" xP 3>8Y
ALF " HELL" SnoEi~Da
ALF "O WOR" -U@ycx|r
ALF "LD " ]K<7A!+@@p
END START end of the program ZOL#Q+U
zZS,<Z
d)0 hAdh
Nuva epP_~TU
<..直接输出..> _ sBFs.o
Hello, world! D~,iI7ac
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<..或者..> W;8}`k
s_6Iz^]I
<. z{qn|#}
// 不带换行 Bc}e ??F
? "Hello, world!" M2nZ,I=l
'A/f>W
// 或者 x^
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M\kct7Y
// 带换行 mm N$\2
?? 'Hello, world!' 5(y Q-/6C+
.> ?#L5V'ZZ*
4*Z>-<W=
Zy6>i2f4f
OCaml >P2QL>P
let main () = &tw{d DD6
print_endline "Hello world!";; dVBr-+
/-g%IeF
;AT~?o`n
Pascal ts=+k/Z
program Hello; K?V'
?s
begin M'$?Jp#]}
writeln('Hello, world!'); wVUm!Y
end. XMpE|M!c
QB7^8O!<
h'A
#Yp0,
Perl 9tB:1n}
#!/usr/local/bin/perl /fxv^C82yv
print "Hello, world!\n"; -yY]0
?gS~9jgcd
Y IVN;:B.
PHP CePI{`&,
<?php Mey=%Fv
print("Hello, world!"); }do=lm?/
?> UujKgL4
qox@_
|exjrsmM*
Pike bd`}2vr
#!/usr/local/bin/pike 5Veybchy "
int main() ]ov"&,J
{ AHTQF#U^
write("Hello, world!\n"); 200Fd8Ju
return 0; PJ'@! jx
} '>UQsAvm
PL7_j
(M,*R
v
PL/I y!kM#DC^
Test: procedure options(main); |z.Ov&d4)(
declare My_String char(20) varying initialize('Hello, world!'); zA&]#mc
put skip list(My_String); m H&WoL<K
end Test; h?&S*)1
[\)irCDv
gOn^}%4.I
Prolog }I#,o!)Vd
goal
Tv~Ys#
write("hello,world!"). XNB4KjT
Su[f"2oR
zY\MzhkX,
Python M!]g36h[
#!/usr/local/bin/python U("m}^
print "Hello, world!" |?<r
|dk9/xdX
= k>ygD_
REXX i>AKXJ+
say "Hello, world!" \oAxmvt
=/qj vY
r`d.Wy Zj
Ruby OeY+Yt0
#!/usr/bin/ruby Z~ {[YsG
print "Hello, world!\n" R>`TV(W`9
r!O4]j_3
OEj%cB!
Scheme 7a'@NgiGg
(display "Hello, world!") 4(}V$#^+
(newline) (khMjFOg
{#uf#J|
kI#yW!
sed (需要至少一行输入) y
;T=u(}
sed -ne '1s/.*/Hello, world!/p' di#:KW
2W=am_\0e.
atjrn:X
Smalltalk gX*i"Y#
Transcript show: 'Hello, world!' YDo,9
#wZBWTj.
J l9w/T
SNOBOL Ke,$3Yx
OUTPUT = "Hello, world!" ='GY:. N
END ~0XV[$`L
j?9fb
9/R<,
SQL }TAHVcX*p
create table MESSAGE (TEXT char(15)); naWW i]9
insert into MESSAGE (TEXT) values ('Hello, world!'); >-<