“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。 704_ehrlE
s<+;5, Q|
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》。 @# =yC.s
NTo[di\_
以下是用不同语言写成的Hello World程序的几个例子: <A(Bq'eQM
Ada x1h&`QUP
with Ada.Text_Io; use Ada.Text_Io; R`J.vMT
procedure Hello is IISdC(5
begin I!#WXK
Put_Line ("Hello, world!"); p9 G{Q
end Hello; Jot7
L%,TB
O"X:3srJ`
V.%LA.8
汇编语言 fK _uuw4
'#C5m#v
x86 CPU,DOS,TASM ce[
Maw
MODEL SMALL |xF!3GGms
IDEAL Gs\D`|3=
STACK 100H ~.>8ww
9k~%HN-[
DATASEG "ql$Rz8
HW DB 'Hello, world!$' vb|
d
Z~w2m6;s
CODESEG O!t=,F1j
MOV AX, @data S5kD|kJ
MOV DS, AX lMl'+ yy
MOV DX, OFFSET HW zGdYk-H3TH
MOV AH, 09H /'/i?9:
INT 21H 4jc?9(y%
MOV AX, 4C00H vjzG
H*
INT 21H D |=L)\
END UhJ{MUH`
SOZs!9oi
)PkW,214#
x86 CPU,GNU/Linux,NASM AB{zkEuK
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ~0h@p4
;Enter this into "hello.asm" then type: .C.b5x!
;"nasm -f elf hello.asm" _K&Hiz/'
;"ld hello.o -o hello" XG!6[o;
;"./hello" ]j!pK4
mMvAA;
section .data ;data section declaration bU[_YuJbM
msg db 'Hello World!',0AH d}%-vm} 0
len equ $-msg ;string length ftKL#9,s(
sjOv!|]A
section .text ;code section declaration !"o\H(siT
global _start ;entry point (start of execution) XS
#u/!
_start: mov edx,len ;string length 'N^*,
mov ecx,msg ;string start 7n?yf_je
mov ebx,1 ;file handle: stdout Z- t&AH
mov eax,4 ;sys_write t3!OqM
int 80h ;kernel system call ]Ok'C"V(j
(S4HU_,88
mov ebx,0 ;return value L[Ot$
mov eax,1 ;sys_exit 6Xz d>5x
int 80h ;kernel system call 8#\|Y~P
6i%6u=um3
,
@!X!L
x86 CPU,Windows,MASM32 VR .t
.386 D.-G!0!
.model flat,stdcall >28l9U
option casemap:none "h #/b}/
;Include 文件定义 ?"^{:~\N
include windows.inc lSBR(a<\y
include user32.inc p_
f<@WE
includelib user32.lib ' <xE0<
include kernel32.inc ?68~ g<d,
includelib kernel32.lib 0b/@QgJ
;数据段 {bADMj1
.data _n/73Oh
szCaption db 'A MessageBox!',0 C\ joDAD
szText db 'Hello,world!',0 g?xD*3<
;代码段 OrYN-A4{
.code //;(KmU9
start: Hq+QsplG
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK d3|/&gDBK
invoke ExitProcess,NULL (w{T[~6
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Mk0x#-F
end start '6})L
7{(UiQbf
KK5;6b
AWK fm@Pa} ,
BEGIN { print "Hello, world!" } _5H~1G%q
(~%NRH<\
[u$|/
BASIC i39ZBs@
传统版BASIC(例如GWBASIC): <i4]qO(0u
/t<
&
10 PRINT "Hello, world!" o[}Dj6e\t
20 END \|9B:y'y
sQj]#/yK:
或在提示符输入: y/ Bo4fM
<ch}]-_
?"Hello, world!":END N$=9R
39hep8+
现代版BASIC(例如Quick BASIC): ^N[ Cip}8
LT
Pr8^
Print "Hello, world!" 1
z~|SmP1
7K
"1^
以下的语句在Quick BASIC中同样有效: [k>{q+MWK
oe.Jm#?2.
? "Hello,world!" ZG2EOy
{@iLfBh5
>Oj$Dn=
BCPL ;l~a|KW0
GET "LIBHDR" {hJCn*m_
K!Fem6R
LET START () BE }<X* :%#b
$( ?P-O4
WRITES ("Hello, world!*N") e"wzb< b
$) ;y. ;U#O
\Cu=Le^
k(pJVez
Befunge 1;1;-4k7I
"!dlrow olleH">v A$N%deb
, l"A/6r!Dp
^_@ &Z[+V)6,,
#h^nvRmON
0 K#|11r
Brainfuck C3Q #[
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ?gUraSFU
+++++++++++++++.>.+++.------.--------.>+.>. 87[ ,.W
G![d_F"e
4K'U}W
C g_IcF><F
#include <stdio.h> .:f ao'
?8{Os;!je
int main(void) x'|9A?ez@Z
{ Jk-WD"J6
printf("Hello, world!\n"); 0RtZTCGO
return 0; )I3E
} >;1w-n
g*My1+J!
o-Dfud@
C++ <uv`)Q 9
#include <iostream> XVt;hO
LwRzzgt
int main() x}pH'S7
{ G#e]J;
std::cout << "Hello, world!" << std::endl; \fEG5/s}T
return 0; D{Nd2G
} n]Yz<#
}a[]I%bu2
XWAIW=.
C++/CLI Ewp2 1
int main() B G\)B
{ )K@D4sl
System::Console::WriteLine("Hello, world!"); e-P{)L<s5
} H[p~1%Lq
Ar~/KRK
-rI7ihr*
C# (C Sharp) M&V4|D
class HelloWorldApp M j[+h|e
{ ;Us6:}s
public static void Main() SQ> Yf\
{ :t!J
9
System.Console.WriteLine("Hello, world!"); PvV\b<Pe+
} rgCC3TX
} /klo),|&
zO\_^A|8H
Bj2iYk_cLa
COBOL !{CIP`P1
IDENTIFICATION DIVISION. 0@b<?Ms9
PROGRAM-ID. HELLO-WORLD. 9&=%shOc+x
NR(rr.
ENVIRONMENT DIVISION. \mGb|aF8
Bf00&PE;
DATA DIVISION. ufR>*)_+
85io%>&0
PROCEDURE DIVISION. )E=B;.FH
DISPLAY "Hello, world!". UdkNb}L
STOP RUN. [= E=H*j
U= n
[7DU0Xg7
Common Lisp V4"o.G3\o
(format t "Hello world!~%") KS~Q[-F1P
b}7g>
._x"b5C
DOS批处理 Bq~S=bAB>R
@echo off 5?>Q[a.Ne
echo "Hello, world!" ZUB]qzmK
w\d1
jK6dI
7h
Eiffel 6@^
?dQ
class HELLO_WORLD u];\v%b
r\b$/:y<e
creation X
J]+F
make
2i6P<&@
feature ^v;8 (eF
make is Gv)*[7
local f~=e
io:BASIC_IO j
yp.2c
do O[1Q#
!!io O>X!78]#K
io.put_string("%N Hello, world!") js)E:+{A,
end -- make '2|mg<Ft
end -- class HELLO_WORLD uh)f/)6
96F+I!qC
^JIs:\g<<
Erlang GF<SQHL,
-module(hello). w"Zws[pm]
-export([hello_world/0]). z9AX8k(B6
E0r#xmk
hello_world() -> io:fwrite("Hello, World!\n"). :]\-GJV5
Gqar5
Pa\yp?({q
Forth /6N!$*8
." Hello, world!" CR %kBrxf
"wV7PSbM
uZ1G,9
Fortran "[L+LPET
WRITE(*,10) \@6w;tyi
10 FORMAT('Hello, World!') x?R1/iHv
STOP 1RQM-0W,
END 'OYnLz`"6
z*^vdi0
1G, '
HTML |oOA;JC)(
<HTML> n)]u|qq
<HEAD> Y#-pK)EeU
<TITLE> Hello World! </TITLE> Xdf;'|HO
</HEAD> [py/\zkn
<BODY> $kQQdF
<p>Hello World!</p> bb`DyUy ^+
</BODY> MIAC'_<-e
</HTML> )!`>Q|]}Zd
Q@l.p-:^U
t+WUz#i"
HQ9+ cC`PmDGq
H c$%I^f}'
( v=Z$#l
$xj>j
INTERCAL Q
S.w#"X[
PLEASE DO ,1 <- #13 FVHR
DO ,1 SUB #1 <- #238 W(*?rA- PP
DO ,1 SUB #2 <- #112 n<7R6)j6
DO ,1 SUB #3 <- #112 f+dj6!g5/
DO ,1 SUB #4 <- #0 pB]+c%\
DO ,1 SUB #5 <- #64 '%A*Z,f
DO ,1 SUB #6 <- #238 `>}e 5
DO ,1 SUB #7 <- #26 z 4`H<Pn
DO ,1 SUB #8 <- #248 G`R2=bb8
DO ,1 SUB #9 <- #168 Q(YQ$i"S
DO ,1 SUB #10 <- #24 W\yaovAt
DO ,1 SUB #11 <- #16 8 =<&9TmE
DO ,1 SUB #12 <- #158 PEAo'63$
DO ,1 SUB #13 <- #52 'St\$X
PLEASE READ OUT ,1 z2A1h!Me
PLEASE GIVE UP Jyu*{
{d,~=s0T
!"x&tF
Java
PP)-g0^@
public class Hello P"mD73a
{ {B
lM<
public static void main(String[] args) zz+[]G+"2m
{ "*aL(R
System.out.println("Hello, world!"); ZiOL7#QWX
} p8MPn>h<
} 8L*P!j9`EY
w[wrZ:[
U:
Q&sq8U
JSP ep2#a#&'
<% ]p2M!N,?
out.print("Hello, world!"); T"$yh2tSY
%> }EZd=_kAq~
kMLWF
/?j
vv&
MIXAL 1tQl^>r16
TERM EQU 19 the MIX console device number iv/!c Mb
ORIG 1000 start address ]2P*Z6Az
START OUT MSG(TERM) output data at address MSG "R/Xv+;
HLT halt execution xui.63/
MSG ALF "MIXAL" qEoa%O
ALF " HELL" <X_I`
ALF "O WOR" do1aH$Iw
ALF "LD " 4>&%N\$*
END START end of the program hs"=>(P)
@dzO{)
yJ&`@gB
Nuva C"P40VQoo
<..直接输出..> q^_PR|
Hello, world! Sp=6%3fZ]m
j[fVF3v
<..或者..> 1 f;k)x
+JMB98+l
<. !V6O~#
// 不带换行 ul$^]ZWkI
? "Hello, world!" l25E!E-'b
F`$V H^%V
// 或者 c.u$NnDU6
9o]h}Xc
// 带换行 <4{,u1!t
?? 'Hello, world!' m\88Etl@
.> _^<HlfOK
_BV'J92.
`H5n_km
OCaml h$Z_r($b
let main () = 8()L }@y
print_endline "Hello world!";; s\6kXR
~L G).
?X1vU0c
Pascal ~@x@uY$5
program Hello; t UJ m}+=>
begin ]}_@!F)
writeln('Hello, world!'); .~+I"V{yF
end. 8$:4~:]/
n1n1}
0jsU^m<g
Perl xHv<pza:
#!/usr/local/bin/perl sD,[,6(
print "Hello, world!\n"; 2} ,|RQETy
4}FuoQL
M+X>!Os
PHP l I&%^>
<?php K<O1PrC
print("Hello, world!"); :xitV]1.
?> 6% @@~"
;?>xuC$
@'.(62v
Pike N5$L),?\y
#!/usr/local/bin/pike iV!o)WvG,F
int main() X6jW mo8]
{ ^zv0hGk 2
write("Hello, world!\n"); )GDP?Nc<Ik
return 0; :yN;_bC!b%
} >t|u 8/P
6b9 oSY-8
SomA`y+ERn
PL/I b
!FX]d1~k
Test: procedure options(main); *ip2|2G$
declare My_String char(20) varying initialize('Hello, world!'); C%LRb{|d
put skip list(My_String); @!0@f'}e
end Test; YGP.LR7
Az29?|e
NIcPjo
Prolog @^8tk3$Y
goal V @A+d[
write("hello,world!"). `9a %vN
gPO,Z
`y5?lS*
Python C~PrIM?
#!/usr/local/bin/python vT)(#0>z
print "Hello, world!" PtySPDClj
1|)l6#hOL
LAG*H
REXX bD_|n!3
say "Hello, world!" ',L>UIXw
kwRXNE(k]_
]J;pUH+u
Ruby uK6`3lCD
#!/usr/bin/ruby vzl+0"
print "Hello, world!\n" ZS0=xS5q)
CL{R.OA
XXsN)2
Scheme 5$o]D
(display "Hello, world!") H)&6I33`
(newline) '=?IVm#C
mJT<
qkB)CY7
sed (需要至少一行输入) bF:]MB^VK
sed -ne '1s/.*/Hello, world!/p' <rd7<@>5D
_"
0VM>
1vlRzkd
Smalltalk __HPwOCG7
Transcript show: 'Hello, world!' p!^.;c
23XSQHVx
+JoE[;
SNOBOL jj^{^,z\
OUTPUT = "Hello, world!" bl. y4
END ~e,k71
CAg\-*P|
P?%kV
SQL !yAg!V
KY
create table MESSAGE (TEXT char(15)); Sc
Uh
-y_
insert into MESSAGE (TEXT) values ('Hello, world!'); pE{ZWW[@+
select TEXT from MESSAGE; A<ca9g3
drop table MESSAGE; TCAtb('D
U
X)k;h
n(^{s5 Rr
Tcl D 3m4:z
#!/usr/local/bin/tcl &oJ=
puts "Hello, world!" M&P?/Zi=L
m89-rR:Kc
Y<%)Im6v/
TScript (S/f!Dk&3
? "Hello, world!" j'Ry.8}
BS<5b*wG
hES_JbX}]
Turing {fXD@lhi
put "Hello, world!" l}-JtZ?[?
le%&r