“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。 !%^^ \,
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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》。
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以下是用不同语言写成的Hello World程序的几个例子: h U`wVy
Ada Gn|F`F
with Ada.Text_Io; use Ada.Text_Io; M m[4yP%
procedure Hello is 8oUpQcim
begin .y_/U wu
Put_Line ("Hello, world!"); +Z7th7W/,
end Hello; pk?w\A}
q qpgy7
PD&\LbuG
汇编语言 u<3HQ.:;
OMWbZ>jB
x86 CPU,DOS,TASM U1DXeh~V
MODEL SMALL rai3<_W<
IDEAL 6+.uU[x@
STACK 100H A )^`?m3
GN ]cDik
DATASEG ]ndvt[4L
HW DB 'Hello, world!$' 9xO#tu]
y4t7`-,~
CODESEG ,TXTS*V?
MOV AX, @data eqP&8^HP
MOV DS, AX "^w]_^GD$d
MOV DX, OFFSET HW
0Sle
MOV AH, 09H Bg&i63XL$$
INT 21H /2UH=Q!x4E
MOV AX, 4C00H ;A|-n1e>Hc
INT 21H |B'9\OkP[=
END qUjmB sB
bSfpbo4(
6|aKL[%6
x86 CPU,GNU/Linux,NASM jGXO\:sO
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ofPHmh`
;Enter this into "hello.asm" then type: UUzYbuS>&l
;"nasm -f elf hello.asm" =NnNN'}
;"ld hello.o -o hello" m@"QDMHk.
;"./hello" #JgH}|&a$
"}q@Y=
section .data ;data section declaration OK{quM5
msg db 'Hello World!',0AH tSVc|j
len equ $-msg ;string length qQA}Z*(m
q*F{/N**
section .text ;code section declaration dRj| g
global _start ;entry point (start of execution) )Y2{_ bx4"
_start: mov edx,len ;string length Gnfd;.
(.
mov ecx,msg ;string start 4US"hexE<
mov ebx,1 ;file handle: stdout #0ETY\}ZD
mov eax,4 ;sys_write S{;sUGcu
int 80h ;kernel system call Pl=ZRKn
R%Q@
mov ebx,0 ;return value b~'"^ Bts*
mov eax,1 ;sys_exit V,q](bg
int 80h ;kernel system call Pa{%\dsv
BFL`!^
uT}' Y)m
x86 CPU,Windows,MASM32 5]n[]FW
.386 V}dJ.I /#
.model flat,stdcall -j73Wz
option casemap:none G]+&!4
;Include 文件定义 k`0>36
include windows.inc A%`[mc]4#
include user32.inc
k\WR ]
includelib user32.lib 1#.>a$>
include kernel32.inc Z @^9PQG$
includelib kernel32.lib J3n-`k8
;数据段 ]}U*_rM:
.data H*[M\gN$
szCaption db 'A MessageBox!',0 X:6c}p%,!
szText db 'Hello,world!',0 &?q/1vLa
;代码段 VY~yg*
.code +6';1Nb@
start: &K.?p2$X
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK (vb
SM}P
invoke ExitProcess,NULL }oL'8-y
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ~ ip,Nl
end start S-k8jm
# a<Gxj
VH+%a<v"
AWK bsB*533
BEGIN { print "Hello, world!" } :/Q
\~fONBY
{5F-5YL+>
BASIC ^
q<v{_
传统版BASIC(例如GWBASIC): :a$\/E =
m|{3),#V
10 PRINT "Hello, world!" ~C>?W[Y
20 END TNGU6j}oq
BsEF'h'Owh
或在提示符输入: hS)'a^FV
huJ&]"C
?"Hello, world!":END *QLI3B9V
b*`lk2oMa/
现代版BASIC(例如Quick BASIC): ZaL.!g
7cTV?nc
Print "Hello, world!" "J4WzA%i
Ed_N[I
以下的语句在Quick BASIC中同样有效: hnDBFQ{
[/Rf\T(,jn
? "Hello,world!" cUA7#1\T=
89o/F+ _b
NdzSz]q}
BCPL YhDtUt}?
GET "LIBHDR"
8DegN,?
!"\80LP
LET START () BE %`r?c<P}
$( UPG9)aF
WRITES ("Hello, world!*N") bI:zp!-.
$) hJZV}a|
y *fDwd~
f}x.jxY?
Befunge H^s<{E0<
"!dlrow olleH">v qYlhlHD
, T~Gvp0r}h
^_@ U-R6xxPZ
#MRMNL@
)pq;*~IBI
Brainfuck l]8D7(g
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< #6+@M
+++++++++++++++.>.+++.------.--------.>+.>. b/C`Jp
><gG8MH0'
pKit~A,Q
C bT^I"
#include <stdio.h> %?p1d!
~v6OsH%vx
int main(void) =Ur}~w&H8
{ HbXPok
printf("Hello, world!\n"); |Z=^`J
return 0; qI~xlW
} Tl2C^j
@wE5S6! B\
*a #rM"6P
C++ 4cl\^yD
#include <iostream> 0@H|n^Md#
&NH$nY.r
int main() m]5Cq6
{ ]%?YZn<{
std::cout << "Hello, world!" << std::endl; G>1eFBh }
return 0; FW/W%^
} STxKE %l
9J9)AV
fjs
[f'L
C++/CLI f"qga/
int main() 6WU(%
{ SVO 3821
System::Console::WriteLine("Hello, world!"); :=wTvz
} }j*KcB_
N6 (
(^u1~1E 5
C# (C Sharp) (`sH3&Kl
class HelloWorldApp "CUty"R8
{ }^/9G17
public static void Main() =
c>Qx"Sw
{ *:L?#Bw
System.Console.WriteLine("Hello, world!"); Z; A`oKd
} <;#~l*
} &!/}Qp
^(|vsFzn
`"&da#N]
COBOL h $L/<3oP6
IDENTIFICATION DIVISION. ;uwRyd
PROGRAM-ID. HELLO-WORLD. ]cGA~d
A7%:05
ENVIRONMENT DIVISION. t4-pM1]1_
f"u%J/e &
DATA DIVISION. k;w- E
.)<(Oj|4
PROCEDURE DIVISION. rz@=pR :
DISPLAY "Hello, world!". -lhLA`6_R
STOP RUN. nIU 6h
1rkE yh??
B:!W$<
Common Lisp Z(Bp 0a
(format t "Hello world!~%") ~[\_N\rm
jC7&s$>Q"g
Kd=%tNp
DOS批处理 Y@b.sMg{
@echo off l)!n/x_ !
echo "Hello, world!" 8erSt!oM
!!`!|w
't6V:X
Eiffel /)4I|"}R0I
class HELLO_WORLD _g~qu
[1
yp66{o
creation {3.r6ZwCn
make ,B0_MDA +
feature gMaN)ESqd4
make is ho0@ l
local ^d~1E Er
io:BASIC_IO Pri`K/
do 4Rvf
!!io #@"<:!?z
io.put_string("%N Hello, world!") AKRTBjG"
end -- make e(I=^#u6
end -- class HELLO_WORLD hrhb!0
Xt#4/>dlR
qt;y2gf=
Erlang Hrz f'a|^
-module(hello). #_(jS+lP?k
-export([hello_world/0]). 5JLu2P
#:^YI
c
hello_world() -> io:fwrite("Hello, World!\n"). -$WYj"
L30$%G|
e}.^Tiwd]
Forth k31I ysh
." Hello, world!" CR 5<ux6,E1{
j'BMAn ?
##EYH1P]
Fortran hYM@?/(q
WRITE(*,10) Xa[?^P
10 FORMAT('Hello, World!') ;\\@q"n%<
STOP Vgyew9>E
END 6p?JAT5
\@1=stK:F
k:#P|z$UD
HTML e`v`XSA[p
<HTML> @$2))g`
<HEAD> %o:2^5\W
<TITLE> Hello World! </TITLE> I<8sI%,s
</HEAD> |7}CQU
<BODY> a'jR#MQl?
<p>Hello World!</p> ?zsB6B?;
</BODY> 9 `w)
</HTML> HH@qz2 w
^>N]H>0'S
'qF#<1&
HQ9+ `A,g] 1C:
H NbGV1q']
|R#"Th6mH!
n Ml%'[u
INTERCAL mK [0L
PLEASE DO ,1 <- #13 -atGlu2
DO ,1 SUB #1 <- #238 _Jt 2YZdA
DO ,1 SUB #2 <- #112 hwIMn33
DO ,1 SUB #3 <- #112 j~e;DO
DO ,1 SUB #4 <- #0 ]/B$br'O{?
DO ,1 SUB #5 <- #64 ~DsECnD
DO ,1 SUB #6 <- #238 f}@jFhr'<
DO ,1 SUB #7 <- #26 (<Th=Fns?
DO ,1 SUB #8 <- #248 =pk)3<GwF
DO ,1 SUB #9 <- #168 <@Fy5k-%.
DO ,1 SUB #10 <- #24 N]<!j$pOz
DO ,1 SUB #11 <- #16 L
DO ,1 SUB #12 <- #158 ~2zMkVH
DO ,1 SUB #13 <- #52 0sh/|`\
PLEASE READ OUT ,1 zWb4([P;
PLEASE GIVE UP NSFs\a@1
~~6^Sh60g
yGsz2T;w
Java B-T/V-c7
public class Hello "n=vN<8(o
{ V2<?ol
public static void main(String[] args) \#>T~.Y7K
{ /g$G_}
System.out.println("Hello, world!"); -#Z
bR
} WzI8_uM
} fS"Hr 0
W5' 3$,X9
.]9c /
JSP T1r3=Y4
<% WMBm6?54
out.print("Hello, world!"); `r_m+]
%> k~|-gfFP
D Kw*~0
j$7Xs"
MIXAL h#hxOVl%x
TERM EQU 19 the MIX console device number 5 XA=G
ORIG 1000 start address I6s3+x;O
START OUT MSG(TERM) output data at address MSG |/|
HLT halt execution vc]cNz:mQ
MSG ALF "MIXAL" Cua%1]"4w
ALF " HELL" e[Jem5C
ALF "O WOR" G5,~Z&}YS
ALF "LD " 4
8{vE3JY
END START end of the program i9D0]3/>
k,uK6$Z
<uc1D/~^:
Nuva 2EK%N'H
<..直接输出..> $
A9%UhV
Hello, world! f(eQ+0D
nWvuaQ0}
<..或者..> {h KjD"?
?9X&tK)E-
<. P@]8pIB0d^
// 不带换行 wCHR7X0*b
? "Hello, world!" 033T>qY
N<L`c/
// 或者 2PR^:h2
;=< ^0hxer
// 带换行 0ilCS[`b
?? 'Hello, world!' fof2
xcH!
.> Ol')7d&
o1/lZm{\~n
uyF|O/FC
OCaml n6(.{M;
let main () = ^o !O)D-q
print_endline "Hello world!";; QQpP#F|w
HSIvWhg?p
]O:N-Y
Pascal $) 5Bf3P0
program Hello; c=6Q%S
begin RuG-{NF{F
writeln('Hello, world!'); +]@Az.E
end. lI/0:|l
S',9g4(5
K"V:<a
Perl aRc '
#!/usr/local/bin/perl \Yoa:|%*y
print "Hello, world!\n"; sIl33kmv
|Cdvfk
Kwhdu<6
PHP XIWm>IQ[)
<?php o."rxd
print("Hello, world!"); Sc]P<F7N]
?> 2Nj9U#A
[Lp,Hqi5
e2C<PGUUB
Pike Ft@Wyo`^
#!/usr/local/bin/pike !%Y~~'5 h
int main() dxj*Q "K
{ ==cd>03()
write("Hello, world!\n"); %o}(sShS
return 0; {NCF6Mk
} s(_+!d6
8)VgS&B~
c[ht`!P
PL/I 3g~^LZ66
Test: procedure options(main); .]|Zf!>}s
declare My_String char(20) varying initialize('Hello, world!'); QI_59f>
put skip list(My_String); ]/T-t1D
end Test; XW L^
SLhEc
!Do,>gO
Prolog B/"2.,
goal MbXq`%
write("hello,world!"). lr2rQo>
c
{I"R8
+3,|"g::
Python #~Q8M*~@
#!/usr/local/bin/python WjMS5^ _
print "Hello, world!" &&L"&Rc
,eQ[Fi!!
c0 WFlj9b
REXX @gSkROCdC)
say "Hello, world!" {[(pWd%J
X;!D};;M
X-B8MoG|
Ruby nB5Am^bP
#!/usr/bin/ruby H0*5_OJ!i
print "Hello, world!\n" x"(9II*
T ^JuZG
FXo2Y]K3`L
Scheme +dkS/b
(display "Hello, world!") ?G?gy2
(newline) !6w{(Rc(C
Gowp
<9 F
a-n4:QT
sed (需要至少一行输入) iS@\ =CK
sed -ne '1s/.*/Hello, world!/p' |)W!jC&k
;5<-)
s%;<O:x8o
Smalltalk v&3O&y/1v
Transcript show: 'Hello, world!' }iIbcA
`eRLc}aP2
g$j6n{Yl
SNOBOL qvt-
OUTPUT = "Hello, world!" Wn!G.(Jq
END sa1mC
AV @\ +0
bO49GEUT _
SQL 0zqj0
create table MESSAGE (TEXT char(15)); &WZP2Q|
insert into MESSAGE (TEXT) values ('Hello, world!'); MY-.t-3
select TEXT from MESSAGE; a%hGZCI
drop table MESSAGE; >Csbjf6
vW' 5` %
xKp0r1}
Tcl MB:n~>ga
#!/usr/local/bin/tcl um8AdiK
puts "Hello, world!" =8{*@>CX
g=A$<