“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。 TN0KS]^A3
C#U(POA
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》。 ]j3> =Jb;
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以下是用不同语言写成的Hello World程序的几个例子: w~*@TG
Ada 0)WAQt\/
with Ada.Text_Io; use Ada.Text_Io; _= v4Iz0
procedure Hello is R])Eg&
begin AT"gRCU$4
Put_Line ("Hello, world!"); mw
28E\U
end Hello; I`0-q?l
cj[b ^Wv:
0VNLhM(LM
汇编语言 >s^$-
[7@g*!+d
x86 CPU,DOS,TASM >_?i)%+)
MODEL SMALL TwkT|Piw
S
IDEAL &!8 WRJ
STACK 100H Rml'{S
(A~7>\r +
DATASEG 0#]fEi
HW DB 'Hello, world!$' ;MS.ag#
ZQfxlzj+X
CODESEG IIR+qJ__|
MOV AX, @data [e+Y7M7
MOV DS, AX KYpS4&Xh
MOV DX, OFFSET HW gI^&z
MOV AH, 09H )s
$]+HQs
INT 21H x4^nT=?6_
MOV AX, 4C00H D;Qx9^.
INT 21H { ptdOrN
END 1b9S";ct0
{zb'Z Yz
cZh0\DyU
x86 CPU,GNU/Linux,NASM .C^P6S2oJ
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ;@ePu
;Enter this into "hello.asm" then type: -8n1y[
;"nasm -f elf hello.asm"
aN0[6+KP;
;"ld hello.o -o hello" uos8Mav{E
;"./hello" ]@$^Ju,
rt+4-WuK>
section .data ;data section declaration ~~/,2^
msg db 'Hello World!',0AH Z Ts*Y,
len equ $-msg ;string length y74Q(
bB_LL
section .text ;code section declaration J p=qPG|
global _start ;entry point (start of execution) ?J:w,,4m
_start: mov edx,len ;string length RCR= W6
mov ecx,msg ;string start "h+Z[h6T
mov ebx,1 ;file handle: stdout &O'W+4FAc
mov eax,4 ;sys_write B(W~]i
int 80h ;kernel system call Uc
tlE>X`
+dCDk* /m
mov ebx,0 ;return value jR/Gd01)
mov eax,1 ;sys_exit w5m/[Z
int 80h ;kernel system call f]NLR>$L}
8oX1 F(R
xk,Uf,,>
x86 CPU,Windows,MASM32 x4q}xwH
.386 # ?2*I2_
.model flat,stdcall ]Fy'M
option casemap:none (e7!p=D
;Include 文件定义 d {!P
c<
include windows.inc , /.@([C
include user32.inc T~]~'+<Pi
includelib user32.lib *wTX
include kernel32.inc W3.[d->X
includelib kernel32.lib !K-1tp$
;数据段 0nwi5
.data qf0pi&q
szCaption db 'A MessageBox!',0 Nh!`"B2B
szText db 'Hello,world!',0 X?_rD'3
;代码段 WzzA:X
.code ew1L+
start: e/D{^*~S
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK <,~OcJG(
invoke ExitProcess,NULL E22o-nI?1
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> `PUqz&
end start i-CJ{l
UPfE\KN+p#
`LkrG9KV{
AWK 07.p
{X R
BEGIN { print "Hello, world!" } [edF'7La
puOtF YZ\
rp@:i _]
BASIC gNZwD6GMe?
传统版BASIC(例如GWBASIC): 3WwS+6R
>j?5?J"
10 PRINT "Hello, world!" )U\i7[k>
20 END ]ae(t`\l^
e1Db
+ QBV
或在提示符输入: s$#64"F
@D9O<x
?"Hello, world!":END zB%~=@Q^6
? $B4'wc5
现代版BASIC(例如Quick BASIC): 6{+yAsI
Gld~GyB\k
Print "Hello, world!" @)b'3~D
ko}& X=
以下的语句在Quick BASIC中同样有效: (>}1t!1
\:m~
+o$<-
? "Hello,world!" p\[!=ZXFr\
5HbHJ.|r
?\\wLZ
BCPL 8-G )lyfj
GET "LIBHDR" Q6(~VvC-
^2'Y=g>
LET START () BE Y][12{I{
$( .BPd06y
WRITES ("Hello, world!*N") &kb~N-
$) gvc@q`_]
$oW=N
*B&P[n
Befunge :%gc Sm
"!dlrow olleH">v EE'2<"M
, kQ=bd{a6
^_@ 6/;YS[jX
<Y)14w%
oywPPVxj
Brainfuck od!44p]
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ranem0KQ)]
+++++++++++++++.>.+++.------.--------.>+.>. sPK ]:iC
1sXCu|\q
"==c
C Xq1#rK(
#include <stdio.h> 5]i#l3")
!>Nlp,r&~
int main(void) 'fn}I0Vc
{ t]&.'n,
printf("Hello, world!\n"); EeYL~ORdi
return 0; CAc]SxLh
} URVW5c
>)K3
8$-MUF,
C++ 6Jgl"Jw8
#include <iostream> rRevyTs
8J,^O04<
int main() ^$oa`B^2JM
{ Apu-9|oP
std::cout << "Hello, world!" << std::endl; ]:f.="
return 0; gxhp7c182
} 'N{1b_v?
<);j5)/
~;(\a@ _
C++/CLI cEHpa%_5
int main() z
4}"oQk:r
{ *$7^.eHfdd
System::Console::WriteLine("Hello, world!"); }6l:'nW
} Xf;!w:u
Z&^vEQ
\B')2phE
C# (C Sharp) 3JD62wtx
class HelloWorldApp p7+{xXf
{ 1
k!gR
public static void Main() W<<G
'Km
{ 6`9QGi,)
System.Console.WriteLine("Hello, world!"); pRfKlTU\
}
k[mp(
} b$2=w^*
3~`\FuHHe
3+>R%TX6i<
COBOL rE*yT(:w
IDENTIFICATION DIVISION. `_yksh3zL4
PROGRAM-ID. HELLO-WORLD. og$dv
23
Q8HNST($?
ENVIRONMENT DIVISION. 0^{Tq0Ri[
!o|
ex+z;
DATA DIVISION. f.ua,,P.
-~.+3rcZ]
PROCEDURE DIVISION. 9@t&jznt<
DISPLAY "Hello, world!". 8+!G/p
STOP RUN. bHTf{=
]>)}xfL &,
u9;3Xn8
Common Lisp 0uKm)t/
(format t "Hello world!~%") a/E(GQ,,
a3A-N] ;f
C^C'!
DOS批处理 uEPm[oyX
@echo off Le~D"d8
echo "Hello, world!" o< b
Il/`#b@h
fCa
lR7!
Eiffel ft8
class HELLO_WORLD ++2a xRl
[GknE#p
creation UHY)+6qt]
make 2;:]Q.g
feature (QFZM"G
make is i_L u
local GF9iK|i/
io:BASIC_IO V13^SVM
do ~i-n_7 +
!!io 0Wd5s{S
io.put_string("%N Hello, world!") P,S!Z&!
end -- make "QfF]/:
end -- class HELLO_WORLD 2v?#r"d
gd3MP^O1
/pe.?Zd
Erlang `iuQ.I
-module(hello). 3 }
$9./+
-export([hello_world/0]). 2P57C;N8|
BI2'NN\
hello_world() -> io:fwrite("Hello, World!\n"). Q-_;.xy#4
a&)$s;
!G;BYr>X
Forth -b%' K}.C
." Hello, world!" CR 6#d+BBKIc
e,vgD kI;
<O9WCl
Fortran :@~3wD[y
WRITE(*,10) _uh@fRyh
10 FORMAT('Hello, World!') 'e))i#/VF
STOP w#(E+s~}
END 9MRe?
oz'jt} ?
$v{sb,
HTML wj$3L3
<HTML> yaj1nq!*"
<HEAD> w2"]%WS %
<TITLE> Hello World! </TITLE> A}!D&s&UH
</HEAD> i/N6 8
<BODY> GB>h8yXH
<p>Hello World!</p> +],2smd@N
</BODY> ~}YgZ/U7T
</HTML> bB.nevb9p
=Oh/4TbW[
o,1Fzdh6(
HQ9+ uN9.U _
H r-BqIoVT
P`hg*"<V
$I@. <J*
INTERCAL x@@k_'~t%
PLEASE DO ,1 <- #13 wW/wvC-
DO ,1 SUB #1 <- #238 D>#Jh>4
DO ,1 SUB #2 <- #112 9LEUj
DO ,1 SUB #3 <- #112 $<wU>X
DO ,1 SUB #4 <- #0 K0^+2lx
DO ,1 SUB #5 <- #64 >*w(YB]/$V
DO ,1 SUB #6 <- #238 d cht8nX7~
DO ,1 SUB #7 <- #26 5PHAd4=bJ
DO ,1 SUB #8 <- #248 <CP't[
DO ,1 SUB #9 <- #168 >>7m'-k%D
DO ,1 SUB #10 <- #24 $_Lcw"xO
DO ,1 SUB #11 <- #16 \4q1<j
DO ,1 SUB #12 <- #158 e3&.RrA
DO ,1 SUB #13 <- #52 ZONe}tv:
PLEASE READ OUT ,1 VN4H+9E
PLEASE GIVE UP &
V/t0
8-vNXvl
M\9p-%"L
Java .=b)Ae c
public class Hello EJrQ9"x&n
{ Q5v_^O<!
public static void main(String[] args) bO{wQ1)Z_
{ o@\q 6xl.
System.out.println("Hello, world!"); mK7egAo
} !Ys.KDL
} x: Tm4V{
u-Ip *1/wp
Qgv-QcI{
JSP 8J7<7Sx
<% m>?{flO
out.print("Hello, world!"); b~;+E#[*
%> a
U*cwR
ab5z&7Re6
{wfe!f
MIXAL T*C]:=)
TERM EQU 19 the MIX console device number W[W}:@KZ
ORIG 1000 start address t5za$kW'&
START OUT MSG(TERM) output data at address MSG 4THGHS^
HLT halt execution ;lo!o9`<
MSG ALF "MIXAL" [318Q%W&
ALF " HELL" ,}#l0BY
ALF "O WOR" PT`gAUCw
ALF "LD " l7JY`x
END START end of the program gTP0:
aq,?
of:xj$dQ_
Nuva E^jb#9\R
<..直接输出..> [<{+tAdn)
Hello, world! *XlnEHv
cz9T,
<..或者..> 1~q|%"J
q>ps99[=
<. tm}0kWx
// 不带换行 |q\:3R_0
? "Hello, world!" a2un[$Jq`
]q@6&]9
// 或者 Q<pL5[00fD
gg%OOvaj5
// 带换行 O}#h^AU-BS
?? 'Hello, world!' ] Vbv64M3
.> O9W|&LAL
m;nT ?kv
`H6kC$^Ofx
OCaml F&lvofy23
let main () = t1YVE%`w
print_endline "Hello world!";; /g!', r,
qMe$Qr8
9rmOf Jo:
Pascal It@.U|
program Hello; $/Q*@4t
begin 7.l[tKh
writeln('Hello, world!'); g k[8'
end. "V;M,/Q|
TM|ycS'
u>.qhtm[
Perl w+~s}ta2^
#!/usr/local/bin/perl %A dE5HI-
print "Hello, world!\n"; R"=pAO.4l
^i^/d#
0Y9\,y_
PHP Iw$7f kq
<?php V1j5jjck
print("Hello, world!"); bgjo_!J+Pp
?> /r Hd9^Y
Hb;#aXHSd
Q0_UBm^f
Pike jdGoPa\
#!/usr/local/bin/pike ZLJfSnB
int main() 4`
gAluJ#
{ m. G}#/
write("Hello, world!\n"); 1/YWDxo,
return 0; =:zmF]j9
} vo[Zuv?<h
^MGgFS]G
{(#>%f+|C
PL/I gI
qYIt
Test: procedure options(main); <o";?^0Q
declare My_String char(20) varying initialize('Hello, world!'); ^{GnEqml&
put skip list(My_String); c?{&=,u2
end Test; {`vF4@
7N/v
Nj_h+=UE!
Prolog T^ ^o
goal ~g+?]Lk}
write("hello,world!"). %klC&
_g~_
mh"&KX86W
LuB-9[^<
Python ;k<g#She
#!/usr/local/bin/python "3A.x1uQ
print "Hello, world!" %W=S*"e-
<8>gb!D G
MkG3TODfHB
REXX ?1Lzbou
say "Hello, world!" 1O0o18'
3EN?{T<yf
^|?/
y=
Ruby Q&;dXE h
#!/usr/bin/ruby A7|!&fi
print "Hello, world!\n" wvum7K{tI
c@%:aiEl
F{a- -
Scheme y8uB>z+#+;
(display "Hello, world!") t/\J
(newline) iXt >!f*
gf^"sfNk
@54D<Lj
sed (需要至少一行输入) lz?F ,].
sed -ne '1s/.*/Hello, world!/p' 4
e1=b,
^ 9
gFW $]
8o-*s+EY"&
Smalltalk {1.t ZCMT
Transcript show: 'Hello, world!' iw <2|]>l
:[oFe/1K!4
s88lN=;
SNOBOL C d)j%
OUTPUT = "Hello, world!" 7yLO<o?9w
END K)c`G_%G
|T~C($9
sXdNlR&
SQL 't:|>;Wx
create table MESSAGE (TEXT char(15)); ][1*.7-
insert into MESSAGE (TEXT) values ('Hello, world!'); SyFOf
select TEXT from MESSAGE; g<VJ4TE6R
drop table MESSAGE; 4hep1Kz%
E`3yf9"
UGK4uK+I`
Tcl <taN3
#!/usr/local/bin/tcl j'#M'W3@
puts "Hello, world!" FOxMt;|M
sHx>UvN6
pJ7M.C!
TScript ."<mL}Fi(
? "Hello, world!" vkWh2z
s)ymm7?
u/3 4E=
Turing 3>Ts7
wM
put "Hello, world!" 2?hc94
mrR~[533j
M[N$N`9
UNIX-style shell B:om61Dn
程序中的/bin/sh可改为您使用的shell `x2Q:&.H`
Q%61_l
#!/bin/sh <\<[J0
echo 'Hello, world!' C~IsYdln
u6{=Z :
PMzPe"3M
GUI ;q&6WO
E Z95)pk
Delphi j_\nsM7
program HelloWorld; v`ckvl)(C
uses b13XHR)0
Dialogs; &L[7jA'[J
begin ?YzOA${
ShowMessage('Hello, World!'); og<mFbqkq7
end. C
7)w8y
X#KC<BXw,
7/nnl0u8
Nuva dYdZt<6W<(
<. &L[oQni];2
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) ],l
w
.> n4Od4&r
E^z\b *
EY=`/~|c
Visual Basic @giJ&3S,
MsgBox "Hello, world!" .:?X<=!S&t
'或者 V3j1M?>
Print "Hello, world!" ns|)VX
)&R^J;W$M1
;Z%PBMa
Visual FoxPro \~|+*^e)
? "Hello, world!" qP6Yn JWl
q 65mR!)
|F_Z
X11 \ 8v{9Yb
用一个程序 &VG|*&M
0Q^ -d+!
xmessage 'Hello, world!' dLb9p"EE#
}}Gz3>?24=
用C++和gtkmm 2 GORu*[U8
5g9lO]WDI
#include <iostream> 4FK|y&p4r
#include <gtkmm/main.h> $89hkUuTu^
#include <gtkmm/button.h> Ig9yd S-.
#include <gtkmm/window.h> ]B'Ac%Rx
using namespace std; 88\0opL-
jb~2f2vUa
class HelloWorld : public Gtk::Window TX7B (JZD
{ 5ve4 u
public: \*{tAF
HelloWorld(); IR; DdF
virtual ~HelloWorld(); ^fVLM>p <;
protected: N|cWTbi
Gtk::Button m_button; >_3+s~
virtual void on_button_clicked(); K:Mm?28s
}; P|mV((/m4
2
MFGKz O
HelloWorld::HelloWorld() : m_button("Hello, world!") "vVL52HwB
{ :2#8\7IU^'
set_border_width(10); MRzrZZ%LQ
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); .I%p0ds1r
add(m_button); sU>!sxW
m_button.show(); HZ$q`e
} gG;d+s1
`uRf*-
HelloWorld::~HelloWorld() {} '_)NI
L`E^BuP/
void HelloWorld::on_button_clicked() d5?"GFy
{ ]^9B%t
s9
cout << "Hello, world!" << endl; fNz*E|]8&
} &^WJ:BvA|^
)U4h?J
int main (int argc, char *argv[]) Q}#5mf&cD
{ .{6?%lt
Gtk::Main kit(argc, argv); n^OWz4
HelloWorld helloworld; *Jd,8B/hC
Gtk::Main::run(helloworld); <