“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。 n3-GnVC][
n#/U@qVgc
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》。 !8H!Fj`|j
1t}
(+NNjH
以下是用不同语言写成的Hello World程序的几个例子: )eIz{Mdp=
Ada 8,Q.t7v
with Ada.Text_Io; use Ada.Text_Io; 3}.mp}K5
procedure Hello is ][T9IAn
begin WHdqO8
Put_Line ("Hello, world!"); LrmtPnL
end Hello; R(n0!h4
FcJ.)U
,Jw\3T1V
汇编语言 0e7O#-
.j+2x[`l
x86 CPU,DOS,TASM Ynk><0g6
MODEL SMALL ?[*@T2Ck
IDEAL V@5 4k*V
STACK 100H * 7zN
uj+.L6S
DATASEG 9phD5b~j
HW DB 'Hello, world!$' *;ZW=%M
Y`[HjS,
CODESEG ^|a&%wxA
MOV AX, @data _Oaso >
MOV DS, AX R+@sHsZ@
MOV DX, OFFSET HW 4IGQ,RTB
MOV AH, 09H i &SBW0)
INT 21H D{Jc+Q$
MOV AX, 4C00H %3@RZe
INT 21H eW }jS/g`
END
@zq\z$
I_Mqh4];
TnZc.
x86 CPU,GNU/Linux,NASM w$<fSe7
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). `)gkkZ$)j
;Enter this into "hello.asm" then type: .-1{,o/&Q
;"nasm -f elf hello.asm" !A ydhe
;"ld hello.o -o hello" >>
8KL`l
;"./hello" S|u1QGB
q}7Df!<|
section .data ;data section declaration %(wsGNd
msg db 'Hello World!',0AH jW+VUF-t
len equ $-msg ;string length 7=M'n;!Mh
3vvFF]D5k
section .text ;code section declaration L}sm R,
global _start ;entry point (start of execution) $BO}D
_start: mov edx,len ;string length (w7cdqe
mov ecx,msg ;string start ss M9t
mov ebx,1 ;file handle: stdout *7D$;?"
mov eax,4 ;sys_write :O@,Z_"
int 80h ;kernel system call {u[K
^G
5IF~]5s
mov ebx,0 ;return value uhN(`E@
mov eax,1 ;sys_exit S r#fyr
int 80h ;kernel system call u3?Pp[tM<
YaE['a
"lnk
x86 CPU,Windows,MASM32 7_d#XKz@
.386 gQzJ2LU(
.model flat,stdcall #}]il0d
option casemap:none '/"M02a
;Include 文件定义 9QM"JEu@
include windows.inc MH~qfH>K
include user32.inc . L6@Rs
includelib user32.lib u C8T!z
include kernel32.inc !v;_@iW3e
includelib kernel32.lib 0dX=
;数据段 7J_f/st
.data 8J(zWV7 r
szCaption db 'A MessageBox!',0 LkbvA
szText db 'Hello,world!',0 2n+XML
;代码段 lL+^n~g
.code hy`)]>9z~
start: EQ`t:jc{
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK V$F.`O!hfi
invoke ExitProcess,NULL /WgW e
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> MldL"*HW:
end start HkB<RsS$p_
Y,Zv0-"
u4^"E+y^S
AWK f?I *`~k
BEGIN { print "Hello, world!" } D\&y(=fzf
~ai'
M#
Y/I6.K3
BASIC rxk{Li<9
传统版BASIC(例如GWBASIC): KIl.?_61O
[k{iN1n
10 PRINT "Hello, world!" .E8p-R5)V>
20 END "@?kxRn!
w=>mG-
或在提示符输入: A|OC?NZY
g-gBg\y{v
?"Hello, world!":END #]/T9:
O,Gn2Do
现代版BASIC(例如Quick BASIC): O!+5As
7Cp_41._
Print "Hello, world!" =9@yJ9c-
y,
_3Ks
以下的语句在Quick BASIC中同样有效: JJ3JULL2
myX0<j3G5
? "Hello,world!" Hu2g (!
kU>|E<c*
0\^2HjsJ
BCPL ryLNMh
GET "LIBHDR" 5kNs@FP
BtApl)q#
LET START () BE |CqJ2
$(
C2i..iD
WRITES ("Hello, world!*N") l<%~w
U
$) ~o5iCt;w
3m7V6##+
m6<0 hP
Befunge f+~!s 2uw
"!dlrow olleH">v VjMuU"++@
, DCUq.q)
^_@ oF^hq-xcP
?tQv|x
^C|9K>M
Brainfuck >iJuR.:OO
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< J :(\o=5 5
+++++++++++++++.>.+++.------.--------.>+.>. }"k(kH
RyD$4jk+T"
4 Z)]Cq*3
C H;&t"Ql.
#include <stdio.h> kn|l 3+
:!hH`l}p
int main(void) ibw;BU
{ ji=po;g=E
printf("Hello, world!\n"); ]~ UkD*Ct
return 0; ob
#XKL
} qNL~m'
$c47cJO)W
:h~!#;w_
C++ *X=-^\G
#include <iostream> 3zHiu*2/!
*?&O8SSBH
int main() [G/X
{ >FNt*tX<0
std::cout << "Hello, world!" << std::endl; zt0 zKXw
return 0; itvdzPO
} fh<G&E8
p
.#|pje^
=1capix 1r
C++/CLI `<d>C}9
int main() ~!kbB4`WK
{ D IN
PAyY
System::Console::WriteLine("Hello, world!"); zY-m]7Yf
} 4[q *7m
_jz=BRO$
{{,%p#/b
C# (C Sharp) bP@_4Dy
class HelloWorldApp cpV i9]
{ jU$PO\UTk
public static void Main() }1dh/Cc`
{ p3' +"sFU
System.Console.WriteLine("Hello, world!"); DBRJtU!5x
}
.@Cshj
} D6WsEd>
T\>=o]
W]OT=6u8o
COBOL (Q+3aEUE
IDENTIFICATION DIVISION. (tv h9o
PROGRAM-ID. HELLO-WORLD. %ZK}y{u\
!w Bmf&=
ENVIRONMENT DIVISION. Apn#o2
i}19$x.D`
DATA DIVISION. -,&Xp>u\
f]}F_]
PROCEDURE DIVISION. w6_}]
&F
DISPLAY "Hello, world!". NL 37Y{b
STOP RUN. TfPx
51vK>
6X7_QBC)
Common Lisp )-@EUN0E>5
(format t "Hello world!~%") ]!N5jbA@
+,lD_{}_
jYkx]J%S
DOS批处理 @j6D#./7j
@echo off $c-3Q|C
echo "Hello, world!" y^Lw7
Tx5L
FyEl@ }W
Eiffel Z=|@76
class HELLO_WORLD 4]bT O
PewLg<?,G4
creation ( nh!tC
make =EKJ!{
feature G\Me%{b#
make is m"*:XfOL
local .<.qRq-
io:BASIC_IO g:Dg?_o
do vXF\PMf
!!io CbZ1<r" /
io.put_string("%N Hello, world!") OH~t\fQ1Zf
end -- make NQAnvX;
end -- class HELLO_WORLD ZZTV
>:
+K?h]v]%
? _W*7<
Erlang ld
$`5!Z
-module(hello). >HFJm&lQ
-export([hello_world/0]). O v-I2
g_=Q=y@,
hello_world() -> io:fwrite("Hello, World!\n"). n'ro5D
$?\],T
z,9qAts?mh
Forth =9c24j
." Hello, world!" CR ^{s)`j'I*
\;3r
Cn,jLy
Fortran HiC\U%We
WRITE(*,10) 6"DvdJ0MB
10 FORMAT('Hello, World!') r#XDgZtI
STOP p})&Zl)V
END )"1D-Bc\Q
mK4a5H
$OT:J
HTML 8{ep`$(K@
<HTML> ' 9,}N:p
<HEAD> K)qmJ-Gub
<TITLE> Hello World! </TITLE> z+4R[+[
</HEAD> ,y0kzwPR1
<BODY> Qu\E/T`
<p>Hello World!</p> ESs)|t h
</BODY> /90@ 85%r
</HTML> (~P&$$qfD
@ +7'0[y?
#zXDh3%]a
HQ9+ &EQov9P7
H 65AOFH
a%AU9?/q#
L]p:gI{m
INTERCAL PH]q#/'
PLEASE DO ,1 <- #13 A$5T3j'
DO ,1 SUB #1 <- #238 :>,d$f^tqE
DO ,1 SUB #2 <- #112 6wF?FtT
DO ,1 SUB #3 <- #112 os2yiF",
DO ,1 SUB #4 <- #0 ^WeT3b q
DO ,1 SUB #5 <- #64 lu >>~vy6
DO ,1 SUB #6 <- #238 RH`m=?~J,
DO ,1 SUB #7 <- #26 #&@&BlIe
DO ,1 SUB #8 <- #248 83S],L
DO ,1 SUB #9 <- #168 !PO(Bfd
DO ,1 SUB #10 <- #24 sOHh&e
DO ,1 SUB #11 <- #16 #
mzJ^V-
DO ,1 SUB #12 <- #158 rOcfPLJi0
DO ,1 SUB #13 <- #52 eSvu:euv
PLEASE READ OUT ,1 We" "/X
PLEASE GIVE UP "aP/214Ul
PKwx)!
Rz
r2Q"NVw
Java F`-? 3]\3
public class Hello o?b"B+#
{ uU<Yf5
public static void main(String[] args) @50Js3R1q
{ Jus)cO#I
System.out.println("Hello, world!"); <cl$?].RE!
} sx/g5?zh
} LIR2B"3F
e\P+R>i0
[*1c.&%(
JSP ~:JKXa?
<% 2bCa|HTv
out.print("Hello, world!"); >8RIMW2
%> 7$^V_{ej
h IGa);g
r"0nUf*og:
MIXAL Jcy`:C\Ay
TERM EQU 19 the MIX console device number @]OI(B
ORIG 1000 start address #Q;#A |EZ
START OUT MSG(TERM) output data at address MSG :}E*u^v K
HLT halt execution Sm-nb*ZyC
MSG ALF "MIXAL" KYlWV<sR
ALF " HELL" 0|HhA,u
ALF "O WOR" cW MZw|t
ALF "LD " <,LeFy\zW
END START end of the program ^tpy8TQ
bjR&bIA:
3 \kT#nr
Nuva 1pcSfN :"1
<..直接输出..> eNXpRvY
Hello, world! )hn,rmn
(P
EK#w: "
<..或者..> &*0!${B
,PY<AI^59
<. hR. EZ|.
// 不带换行 L:'Y#VI{
? "Hello, world!" "+|>nA=7
d/7c#er
// 或者 *A_
oE5+
// 带换行 d*H-l3N
?? 'Hello, world!' h; {?z
.> +[z(N
GifD>c |z
gg6&Fzp
OCaml mTcLocx
let main () = b5yb~;0
print_endline "Hello world!";; ph69u #Og
|4dNi1{Zd
uV;Z
Pascal Z3[,Xw
program Hello; :Z&ipd!yY
begin !3Pl]S~6!
writeln('Hello, world!'); +K+
== mO&
end. 4u:{PN
)m6=_q5@o
^B5Hjf9
Perl ZtIK"o-|!
#!/usr/local/bin/perl uE/qraA
print "Hello, world!\n"; Q}I. UG_
NbgP,-
/x`H6'3?
PHP yQ&;#`!'
<?php S$V'_
print("Hello, world!"); i++ F&r[
?> k ^+h>B-;
CVu'uyy
|Z!C`G[
Pike D b(a;o
#!/usr/local/bin/pike q!NwfXJM
int main() a)}?rzT]
{ RCoz;|c`P
write("Hello, world!\n"); A(<-
U|
return 0; rJZ-/]Xf!6
} k9Yr&8B
|n]^gTJt
%f?#) 01>
PL/I Qza[~6
Test: procedure options(main); ZP?](RV>xg
declare My_String char(20) varying initialize('Hello, world!'); I8?egDkk
put skip list(My_String); KA.@q AEB
end Test; r?H {Y3,
g2F~0%HY
DfqXw^BKD
Prolog mAXTO7
goal +)ro
EJ_
write("hello,world!"). {*tewF)|
-@AGQ+e
mVk:[
}l6
Python ~l.]3wyk
#!/usr/local/bin/python P`RM"'Om
print "Hello, world!" {jr>Z"/q
l$PO!JRD
n j1 cqh
REXX :qw:)i
say "Hello, world!" ISOPKZ#F
VSM%<-iQ
ijC;"j/(
Ruby [gD02a:u
#!/usr/bin/ruby R?^FO:nM%!
print "Hello, world!\n" e@@kTny(
sE]eIN
Bg;bBA!L
Scheme qAkx52v6
(display "Hello, world!") |A &Nv~.)
(newline) $eI[3{}X
.LV=Z0ja
2<YHo{0BLS
sed (需要至少一行输入) FL0[V,
sed -ne '1s/.*/Hello, world!/p' m_U__CZ}Tt
7;c{lQOj}
)HR'FlxOd
Smalltalk %p^C,B{7w
Transcript show: 'Hello, world!' l{Xsh;%=
(r:WG!I,
o"TEmZUP
SNOBOL k&@JF@_TI
OUTPUT = "Hello, world!" w QwY_ _
END YIt:_][*
r=8]Ub[
R3%T}^;f
SQL Q8T4_p[-o
create table MESSAGE (TEXT char(15)); 5+giT5K*h
insert into MESSAGE (TEXT) values ('Hello, world!'); d.2
select TEXT from MESSAGE; C6Dq7~{B
drop table MESSAGE; Z
A7u66
1rTA0+h
?RrJYj1
Tcl N f1) 5
#!/usr/local/bin/tcl =ww8,z4X
puts "Hello, world!" o%Pi;8
.r[J} O"
]Cbht\Ag"
TScript ()3+!};
? "Hello, world!" ?Q:se
}MuXN<DDb
>PL/>
Turing _/P"ulNb
put "Hello, world!" ZVgR7+`]#
V ;"?='vVe
~"+[VE5
UNIX-style shell (|h<{ -L
程序中的/bin/sh可改为您使用的shell j3sUZg|d
ojtc Kw
#!/bin/sh ,Lox?}t
echo 'Hello, world!' $aG]V-M>
W $H8[G
K,+`td#
GUI ;,@3bu>r
N~Ax78TX
Delphi Qh?q0VKU^
program HelloWorld; w.^k':,"
uses R*VZ=i
Dialogs; wp.'M?6`L
begin \1ys2BX
ShowMessage('Hello, World!'); -D38>#Y
end. rQN+x|dKMb
@b-?KH
I{B8'n{cN
Nuva :t^=~xO9
<. an0@EkZ
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) qd!$ nr
.> QBai;p{
d=N5cCqq
2*%0m^#^6
Visual Basic =xai 7iM
MsgBox "Hello, world!" BYNOgB1
'或者 >d#B149
Print "Hello, world!" pr@8PD2%
pd>EUdbrp&
)<-kS
Visual FoxPro :%!=Ej.J
? "Hello, world!" :m@(S6T m
SYa!IL-B
Kgk9p`C(
X11 /`:5#O
用一个程序 2$\Du9+
cg$7`/U
xmessage 'Hello, world!' PM o>J|^
RrKs!2sCT
用C++和gtkmm 2 9.SPxd~
N@;6/[8
#include <iostream> e,:@c3I
#include <gtkmm/main.h> > YN<~z-
#include <gtkmm/button.h> 8%vk"h:u:
#include <gtkmm/window.h> ?Za1
b
using namespace std; V..m2nQj
G)'cd D1
class HelloWorld : public Gtk::Window Z78&Ib