“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。 [1pWg^
FW](GWp`:
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》。 r_8[}|7;
.UxbwTup
以下是用不同语言写成的Hello World程序的几个例子: `zD]*i(
Ada 6Vr:?TI7
with Ada.Text_Io; use Ada.Text_Io; N3J T[7
procedure Hello is iUNlNl ?
begin oD0WHp
Put_Line ("Hello, world!"); 0K+a/G@
n\
end Hello; 0)@7$Xhf
1y\-Iz^
H0!W:cIS;l
汇编语言 ;ps0wswX
:Q~Rb<']{x
x86 CPU,DOS,TASM dvPK5+0W?
MODEL SMALL $~$NQe!/
IDEAL {#-I;I:
STACK 100H oqLM-=0<}
<4l;I*:2&
DATASEG 9j[lr${A
HW DB 'Hello, world!$' hFLD2<
=f
FTi1]/h
CODESEG A6ar@$MZ
MOV AX, @data l1<]pdLTR
MOV DS, AX >bgx o<
MOV DX, OFFSET HW +(a}S$C
MOV AH, 09H bSK> p3
INT 21H ^p@R!228
MOV AX, 4C00H =g]Ln)jc
INT 21H 6[\b]I\Q
END rMV<}C ^
%jS#DVxBR
etcpto=Mo
x86 CPU,GNU/Linux,NASM WF'Di4
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). fga{b7
;Enter this into "hello.asm" then type: Cf~H9
;"nasm -f elf hello.asm" }&E'ox<S
;"ld hello.o -o hello" ZvQ~K(3
;"./hello" -XbO[_Wf
g8+Ke'=_
section .data ;data section declaration am+'j5`Ys
msg db 'Hello World!',0AH p3e_:5k
len equ $-msg ;string length TbK;_pg
)MV`(/BC*
section .text ;code section declaration r~<I5MZY
global _start ;entry point (start of execution) m VSaC
_start: mov edx,len ;string length F9N/_H*+
mov ecx,msg ;string start 4`KQ@m
mov ebx,1 ;file handle: stdout {c#{dT
mov eax,4 ;sys_write -Hx._I$l
int 80h ;kernel system call |i/Iv
RV%aFI )
mov ebx,0 ;return value "s?!1v(v
mov eax,1 ;sys_exit dn? #}^,"
int 80h ;kernel system call (toN??r
(Lp$EC&%6
h2Kx
x86 CPU,Windows,MASM32 P7X':
.386 %-A #7\
.model flat,stdcall 4ONou&T
option casemap:none N9|v%-_?)
;Include 文件定义 ! u4'1jd[d
include windows.inc W5&;PkhQ6
include user32.inc RD$"ft]Vc
includelib user32.lib );m7;}gE
include kernel32.inc 4mqA*c%6S
includelib kernel32.lib +!'rwD
;数据段 qi ;X_\v
.data e>FK5rz
szCaption db 'A MessageBox!',0 ME9jN{ le
szText db 'Hello,world!',0 SLj2/B0
;代码段 z }t{bm
.code O<H5W|cM
start: 8M"0o}wx
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK s}O9[_v
invoke ExitProcess,NULL DbL=2
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> oD@~wcMIT0
end start BB>R=kt
cyQ&w>'
:X66[V&eH
AWK L{2KK]IF
BEGIN { print "Hello, world!" } (,i&pgVZ
O6P{+xj$
03{pxI
BASIC Kgb3>r
传统版BASIC(例如GWBASIC): U|NVDuo{{x
Bq20U:f
10 PRINT "Hello, world!" IPIas$
20 END (B0tgg^jj,
)-RI
或在提示符输入: U6B-{l:W
=/|2f; Q
?"Hello, world!":END =Eh~ wm
{p70(
]v
现代版BASIC(例如Quick BASIC): t3w:!'Ato
l1EI4Y9KG
Print "Hello, world!" N
N1(f
j3J\%7^i
以下的语句在Quick BASIC中同样有效: 1U/ dc.x5
Lwzk<+>w^
? "Hello,world!" +@j@# ~=K
(PM!{u=
$N[R99*x8
BCPL L
PDx3MS
GET "LIBHDR" '0\v[f{K3G
y\M K d[G7
LET START () BE j\uh]8N3<
$( cGE,3dsF[
WRITES ("Hello, world!*N") uE}A-\G
$) %:DH_0
3T|xUY)G4
mHY R?
Befunge !97k
"!dlrow olleH">v !=Hu?F p
, /3!c
;(
^_@ XuY#EJbZ
k|SywATr
W{1"
Brainfuck 0?{Y6:d+
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< T"tR*2HwSd
+++++++++++++++.>.+++.------.--------.>+.>. ^_Ap?zn
3om_Z/k
(9phRo)>
C ],3#[n[ m
#include <stdio.h> ]8c%)%Vi
`>
:^c
int main(void) A.%MrgOOX
{ @uJ^k
>B
printf("Hello, world!\n"); }=fVO<Rv
return 0; gI/#7Cr
} jmH=W)
*wd@YMOP
W|yFjE&dr
C++ *>#mI/#}
#include <iostream> 9bxBm
EW:tb-%`
int main() tS@J)p+_(
{ b;K];o-/f
std::cout << "Hello, world!" << std::endl; 6zf3A:]&{
return 0; jMP!/t
:w
} @7fx0I'n
K*]^0
|_A DG
C++/CLI ] C&AU[U*
int main() 0Gr ^#`
{ xyvG+K&
System::Console::WriteLine("Hello, world!"); (=/%_jj
} ^G*zFqa+`
3SMb#ce*o
' thEZ
C# (C Sharp) DJGq=*
class HelloWorldApp Ug1[pONk
{ 8e:\T.)M
public static void Main() WbP
wO
{ #zL0P>P'a
System.Console.WriteLine("Hello, world!"); 9cO
m$
} 1;Q>B>6
} 1/l;4~p7'
[Dv6z t>
KVC$o+<'`%
COBOL $zR[2{bg
IDENTIFICATION DIVISION. D{J+}*y
PROGRAM-ID. HELLO-WORLD. MUeS8:q-N
1I1Z),
ENVIRONMENT DIVISION. |K jy4.2
,O;+fhUJ(
DATA DIVISION. [|NgrU_.
)}KQtkU8:
PROCEDURE DIVISION. ~nSGN%
DISPLAY "Hello, world!". rP=!!fC1;
STOP RUN. 82q_"y>6
Mb2rHUr
R[/]iK+!&
Common Lisp k\~A\UIYo
(format t "Hello world!~%") ] SErM#$*
R\+O.vX
5ZPe=SQ{
DOS批处理 2Q/#.lNL
@echo off hny):59f
echo "Hello, world!" cHG>iW 9C
>~% _U+6
qZ8V/
Eiffel @rh1W$
class HELLO_WORLD YnCWmlC
\qU .?V[2
creation ic+tn9f\
make luEP5l2&
feature 3}}#'5D
make is QCI-YJ&o
local #CM^f^*
io:BASIC_IO 'aWzam>
do -i}@o1o\
!!io xP1`FSO8=
io.put_string("%N Hello, world!") l*l(QvN_
end -- make f17pwJ~=
end -- class HELLO_WORLD n,Z B-"dW
cX64 X
/y\KLa
Erlang u/D=&"tL
-module(hello). (aO+7ykRuJ
-export([hello_world/0]). )I`6XG
igV4nL
hello_world() -> io:fwrite("Hello, World!\n"). y?|JBf
$X %w9le
XOM@Pi#z
Forth L;},1
\
." Hello, world!" CR tcg sXB/t
iCouGd}
(>
v1)*r
Fortran ijYSYX@
WRITE(*,10) y`~[R7E
10 FORMAT('Hello, World!') =9oN#4mWK
STOP !5~{?sr>
END kpkN GQ2
r9/PmZo4x
nKFua l3
HTML OG_2k3v
<HTML> f1'NWec
<HEAD> i%+p\eeq*
<TITLE> Hello World! </TITLE> eeuTf
</HEAD>
\|Qx`-
<BODY> HNA/LJl[VU
<p>Hello World!</p> g`jO
</BODY> (8<U+)[tPy
</HTML> +_8*;k@F'
Tsez&R$k
@l0#C5(:
HQ9+ 7P`|wNq
H |wKC9 O@%
F z_SID
RZ!-,|"cwL
INTERCAL i/nA(%_
PLEASE DO ,1 <- #13 9=D\xBd|w
DO ,1 SUB #1 <- #238 4VjP:>*p
DO ,1 SUB #2 <- #112 blcd]7nK
DO ,1 SUB #3 <- #112 a _YE[6
DO ,1 SUB #4 <- #0 'IweN
DO ,1 SUB #5 <- #64 ]q0mo1-EZ!
DO ,1 SUB #6 <- #238 n>tYeN)F<
DO ,1 SUB #7 <- #26 "-Lbz)k
DO ,1 SUB #8 <- #248 ^+zF;Q'
DO ,1 SUB #9 <- #168 -X ~VXeg
DO ,1 SUB #10 <- #24 1&~u:RUXe
DO ,1 SUB #11 <- #16 [q/=%8qLUA
DO ,1 SUB #12 <- #158 LYPjdp2>"o
DO ,1 SUB #13 <- #52 #Al.Itj
PLEASE READ OUT ,1 /s3AZ j9
PLEASE GIVE UP [kx_Izi/T
|->{NUZ{
7z'l}*FRD
Java T|NNd1>
public class Hello f%0^89)
{ ?b0 VB
public static void main(String[] args) d/G`w{H}y
{ kAbRXID
System.out.println("Hello, world!"); .'C$w1[w
} &k+G^ !=s#
} |?n=~21"1O
.%7#o
N\ ?%944R
JSP |;o#-YosP
<% M7&u_Cn?
out.print("Hello, world!"); V3fd]rIP
%> _D:#M
<JE-#i
[H5TtsQ[
MIXAL $:kG>R@\t
TERM EQU 19 the MIX console device number +2!J 3{[J
ORIG 1000 start address mw9;LNi\D
START OUT MSG(TERM) output data at address MSG 4:-h\%
HLT halt execution 6/@"K
HHVe
MSG ALF "MIXAL" >;}np
F>
ALF " HELL" ru,]!YPJE2
ALF "O WOR" AK\X{>$a!
ALF "LD " W!pLk/|ls
END START end of the program pIdJ+gu(s
@EH:4~
4Y5Q>2D}
Nuva +v:t
<..直接输出..> (#FWA<o
Hello, world! #W,BUN}
%;kr%%t%
<..或者..> !={Z]J
y#8|
@?
<. %1fH-:c=C0
// 不带换行 Dk4Jg++
? "Hello, world!" ;u!qu$O
\D(6t!Ox
// 或者 ''S*B|:
?1JVzZ4H
// 带换行 U^SJWYi<Y
?? 'Hello, world!' k L2(M6m
.> Reca5r1O
J<Di2b+
iLw O4i
OCaml <U`lh
let main () = ~;O|$xL
print_endline "Hello world!";; hXdc5 ?i?
UR6.zE4=_
k"F5'Od
Pascal l<qK'
P4
program Hello; -o*IJQ_
begin $A\fm`
writeln('Hello, world!'); }yZ9pTB.?E
end. &1Dq3%$c
/n;-f%dL
S05+G}[$
Perl +@[T0cXp
#!/usr/local/bin/perl 1 zIFQ@
print "Hello, world!\n"; ;n_ |t/=
d;O16xcM/
hI*gw3V
PHP (&R/ns~
<?php f<WP<!N%
print("Hello, world!"); (@*[^@ipV
?> : xI SS
89T xd9X
4E]w4BG)
Pike x!GHUz*:uz
#!/usr/local/bin/pike lPyGL-Q
int main() Rhh5r0 \5
{ ?t++IEoP
write("Hello, world!\n"); p`:hY`P
return 0; gV@FT|j!i
} `>&V_^y+
0zfh:O
cM%I5F+n
PL/I N"SFVc_2
Test: procedure options(main); 9}^nozR,I
declare My_String char(20) varying initialize('Hello, world!'); FrBoE#
put skip list(My_String); xtWQ.
end Test; U@21N3_@_
FJo?~
d_s=5+Yj
Prolog [. Vy
goal #DK@&Gv
write("hello,world!"). `|?K4<5|
vYQ0e:P
tY~gn|M
Python R6l`IlG`
#!/usr/local/bin/python \d$fi*{
print "Hello, world!"
h[~JCYA
D^qto{!
)H@"S]?7i"
REXX ..BIoSrj
say "Hello, world!" MH@=Qqx#=t
Er/h:=
lz2B,#
Ruby 6.%M:j00E
#!/usr/bin/ruby (;DnL|"'8
print "Hello, world!\n" M )4-eo
~D# -i >Z
j}9][Fm1*
Scheme >g7}JI&
(display "Hello, world!") >np!f8+d"q
(newline) 9e|-sn
Y'-@O"pK
;
kPx@C
sed (需要至少一行输入) yOR]r+8
sed -ne '1s/.*/Hello, world!/p' Jw13
Wb-
)F_vWbg
ToMvP B);
Smalltalk %siBCjvo=
Transcript show: 'Hello, world!' ='r86vq
qe. Qjq
'-9B`O,&
SNOBOL f</'=k
OUTPUT = "Hello, world!" aumWU{j=
END \S#Mc
E"i<fr
T
r~f*aD
SQL ^a+W!
create table MESSAGE (TEXT char(15)); o[=h=&@5p
insert into MESSAGE (TEXT) values ('Hello, world!'); O7<- -
select TEXT from MESSAGE; 3=YK" 5J
drop table MESSAGE; %[3?vX
i'XW)n
5e)2Jt:
Tcl WFHS8SI
#!/usr/local/bin/tcl VtM:~|v
puts "Hello, world!" ad
<z+a
0
0JH*I
.T!R]n
TScript ".0~@W0
? "Hello, world!" =;tDYuFc!
`Uz2(zqS
H]]UsY`
Turing =yT3#A~<G
put "Hello, world!" R0yPmh,{
Z"ce1cB
;Gf,I1d}{
UNIX-style shell |A .U~P):
程序中的/bin/sh可改为您使用的shell He&7(mQ0^
yT3q~#:
#!/bin/sh [u?*'
c{
echo 'Hello, world!' b\{34z,
7]8nW!h;
&s{" Vc9]
GUI yIq.
m=
%"jp':
Delphi [X&VxTxr
program HelloWorld; Lu][0+-
uses prdc}~J8{
Dialogs; RV_(T+
begin %U
uVD
ShowMessage('Hello, World!'); _\ &