“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。 >/}v8k 1v
StaX~J6=
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》。 n16,u$|
zj"J~s;?
以下是用不同语言写成的Hello World程序的几个例子: [C/h{WPC-
Ada !</5 )B`5:
with Ada.Text_Io; use Ada.Text_Io; |.)dOk,o
procedure Hello is f;
>DM
begin 7S 1
Y)
Put_Line ("Hello, world!"); rEs,o3h?po
end Hello; uiM*!ge
uu]<R@!J
}-YD_Pm
K-
汇编语言 5\RKT)%X
pA4oy
x86 CPU,DOS,TASM ;lnh;0B
MODEL SMALL pH'#v]"
IDEAL bU(t5
[
STACK 100H W1Ur~x`
Kh'/Ne?
DATASEG fqFE GyeNr
HW DB 'Hello, world!$' )m
\}ITf
ES}@mO
CODESEG J{\S+O2,*
MOV AX, @data DRj\i6-v
MOV DS, AX (/tbe@<
MOV DX, OFFSET HW ~z%K9YcyU
MOV AH, 09H IWsB$T
INT 21H Cddw\|'3
MOV AX, 4C00H >mi%L3Pk
INT 21H wp$CJ09f*
END nlw(U3@7
#&5m=q$EI
d,6 Z
x86 CPU,GNU/Linux,NASM vw>O;u.]B
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 4Z1-RS
;Enter this into "hello.asm" then type: j+w*Absh
;"nasm -f elf hello.asm" uXNJ{]o
;"ld hello.o -o hello" 0;} 9XZ
;"./hello" aKkQXq*
nW!rM($q
section .data ;data section declaration fA2H8"r
msg db 'Hello World!',0AH wT3QSJ
len equ $-msg ;string length T/dchWG
f[!N]*
section .text ;code section declaration
&tkkn2t
global _start ;entry point (start of execution) Z"]
ben
_start: mov edx,len ;string length WDWb7
mov ecx,msg ;string start ?&pjP,a
mov ebx,1 ;file handle: stdout _{TGO
jZr
mov eax,4 ;sys_write G6]M~:<i
int 80h ;kernel system call N9Y,%lQ|B8
a
UAPh
mov ebx,0 ;return value sq*d?<:3
mov eax,1 ;sys_exit bJmVq%>;
int 80h ;kernel system call 9{^:+r
M
g1E1kXe
ePP-&V"`"
x86 CPU,Windows,MASM32 Xu3o,k
.386 E<>n0",
.model flat,stdcall (Lo<3a-]
option casemap:none Jou~>0,/j
;Include 文件定义 m .le' &
include windows.inc 6Z\[{S];
include user32.inc $._p !, <
includelib user32.lib ;.'2ZNt2
include kernel32.inc $ThkK3
includelib kernel32.lib LK)0g 4{
;数据段 /E@LnKe
.data #3f\,4K5
szCaption db 'A MessageBox!',0 \\Fl,'
szText db 'Hello,world!',0 r8pTtf#Q
;代码段 ?9i
7w1`
.code sX^m1v~N|
start: M%/ML=eLi
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK /<\>j+SC
invoke ExitProcess,NULL w*e O9k
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 66,?f<b
end start s>9w+|6Ji
#(?EL@5
8Tyf#`'I
AWK K!lGo3n]
BEGIN { print "Hello, world!" } A=Q"IdK
/ 9/=]
h?p&9[e`
BASIC @D[jUC$E
传统版BASIC(例如GWBASIC): t.v@\[{-
S6*3."Sk
10 PRINT "Hello, world!" W1w)SS
20 END oQBfDD0
f5IO<(:E^
或在提示符输入: 5#!pwjt~7
!E'jd72O
?"Hello, world!":END _1VtVfiZ{
fpwge/w
现代版BASIC(例如Quick BASIC): rgWGe6;!
!ANv XPp
Print "Hello, world!" Ia*eb%HG
6!
\a8q'z
以下的语句在Quick BASIC中同样有效: _S7GkpoK
JM0'V0z
? "Hello,world!" WJ9Jj69
ff**) Xdh
7[[XNJP
BCPL EX7gTf#
GET "LIBHDR" H5j~<@STC
\SkCsE#H
LET START () BE m,K0BL
$( BI?M/pIm
WRITES ("Hello, world!*N") ]d&6 ?7 !>
$) X<9jBj/t
{n2mh%I
!G.)%+Z
Befunge ~Y<x-)R
"!dlrow olleH">v {e/Qs|a
R
, '-p<E"#4Z
^_@ Z)Nl\e& M
~9#\+[ d_
X!2/cgU7
Brainfuck CaX&T2(
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< =P\H}?PF
+++++++++++++++.>.+++.------.--------.>+.>. ;,}tXz
$&M"Ji
n a])bBn
C d nWh}!
#include <stdio.h> \/*r45!
q%i2'yE
int main(void) N9 3
ZI|T
{ 44B)=p7
printf("Hello, world!\n"); ~v$gk
return 0; m/r4f279
} 8
C @iD%
^|5bK_Z&
s
de|t
C++ O:"gJ4D
#include <iostream> ymT&[+V
&ok2Xw
int main() LGGC=;{}
{ `{s:lf
std::cout << "Hello, world!" << std::endl; 3N|,c]|
return 0; V)V\M6
} c~[L;_
r5tC
sc\4.Ux%Q
C++/CLI b/5
int main() QXqBb$AXi,
{ \74+ cN
System::Console::WriteLine("Hello, world!"); zpx
} PXz,[<ET?#
hJ 4]GA'
6":=p:PT.
C# (C Sharp) Z.Z+cFi
class HelloWorldApp TXD\i Dq
{ V4ml& D
public static void Main() 6;i]v|M-
{ T},Nqt<
System.Console.WriteLine("Hello, world!"); OV8Y)%t"
} q$7WZ+Y\
} [vV]lWOp'
fmILkXKz
WDNuR#J?
COBOL =t\HtAXn[
IDENTIFICATION DIVISION. $q);xs
PROGRAM-ID. HELLO-WORLD. +K,]#$k
P#]%C
ENVIRONMENT DIVISION. %b<cJ]F
?NoG.
DATA DIVISION. V\r!H>
WQv%57+
PROCEDURE DIVISION. eSHyA+F
DISPLAY "Hello, world!". 9ar+P h@*
STOP RUN. TC;2K,.#k
,rx?Ig}kz
9#L0Q%,*
Common Lisp JJ[.K*dO
(format t "Hello world!~%") Hz&a~
eD5.*O
{0
d/;
DOS批处理 &[ejxK"
@echo off 2'UWPZgE
echo "Hello, world!" Sa7bl~p\
g0NtM%
o5)lTVQ~~
Eiffel sr1 `/
class HELLO_WORLD B%QvFxZz
:^]rjy/|+
creation D&KRJQ/
make 1Ys6CJ#
feature Ucr$5^ME
make is |Y?1rLC
local HfEU[p7)
io:BASIC_IO feSd%
do KvW{M
!!io X<{kf-GP
io.put_string("%N Hello, world!") -,+zA.{+W
end -- make |tF:]jnIt
end -- class HELLO_WORLD BU],,t\
T9N][5 \
yXyL,R
Erlang 6V)P4ao
-module(hello). J3`a}LyDf
-export([hello_world/0]). }wZ9#Ll
,xmmS\
hello_world() -> io:fwrite("Hello, World!\n"). 5nC#<EE
VJquB8?H
%"kF i
Forth r/o1a't;
." Hello, world!" CR uL| Wuq
"@uKe8r|y
&-M>@BMy
Fortran 3VNYDY`>
WRITE(*,10) G+&ug`0]5
10 FORMAT('Hello, World!') r$<-2lW
STOP Q{FK_Mv<
END :98<dQIG
W
!TnS/O_1
,`kag~bZ
HTML =Ts2a"n
<HTML> J?9K|4
)
<HEAD> mAO$gHQ
<TITLE> Hello World! </TITLE> g{0a]'ph
</HEAD> ,=!_7'm
<BODY> >G`Uc&=
<p>Hello World!</p> }t5-%&gBY0
</BODY> ?}p~8{ '
</HTML> %@Mv-A6)
v;_m1UpuW
(S MnYh4
HQ9+ zM:&`6;e
H ]34fG3D|
<!@*2/Q]J]
I_ O8 9Sgn
INTERCAL 39Nz>Nu:
PLEASE DO ,1 <- #13 U~h
f,Oxi
DO ,1 SUB #1 <- #238 ppL*#/jYt
DO ,1 SUB #2 <- #112 ktE~)G
DO ,1 SUB #3 <- #112 %a\!|/;6
DO ,1 SUB #4 <- #0 j~DTvWg<Jl
DO ,1 SUB #5 <- #64 ]k0Pe;<
DO ,1 SUB #6 <- #238 YO&=fd*
DO ,1 SUB #7 <- #26 Bgw=((p
DO ,1 SUB #8 <- #248 _"nzo4e0
DO ,1 SUB #9 <- #168 V\Q=EsHj
DO ,1 SUB #10 <- #24 CYkU-
DO ,1 SUB #11 <- #16 F_C7S
DO ,1 SUB #12 <- #158 P D,s,A
DO ,1 SUB #13 <- #52 \_GG6
PLEASE READ OUT ,1 Vz4/u|gt
PLEASE GIVE UP 7I\qEr57
{nQ?+o3
2H\}N^;f
Java 8kn> ?
public class Hello X8m@xFW}
{ K9z 1'k QH
public static void main(String[] args) ~bC-0^/
8|
{ LsW7JIQd
System.out.println("Hello, world!"); K;uO<{a)r
} ]Q8[,HTG
} (}!xO?NA(
\B\G=Y
Ui:WbH<b{
JSP r>o#h+'AV
<% }o9fpo|
out.print("Hello, world!"); 7\;4 d4u
%> #Jx6DQGa
5f#N$mh
2lb HUK
MIXAL z8VcV*6
TERM EQU 19 the MIX console device number 8rV"? m`S
ORIG 1000 start address zeqwmV=
START OUT MSG(TERM) output data at address MSG v,}Mn7:
HLT halt execution $%:=;1Jl
MSG ALF "MIXAL" \t=ls
ALF " HELL" HGiO}|q:
ALF "O WOR"
,>C`|
ALF "LD "
:r+BL@9
END START end of the program o54/r#~fi
K$1(HbL
5u5-:#sLy
Nuva =\ek;d0Tqb
<..直接输出..> $l
W
7me
Hello, world! EOj.Jrs~
v.Vdjs
<..或者..> .
.5s2
dQ.:xu}~
<. (=\))t8J
// 不带换行 %tK^&rw%
? "Hello, world!" `T#Jiq E
7M.TLV!f]
// 或者 t>KvR!+`g
)(/Bw&$
// 带换行 .`ZuUr
?? 'Hello, world!' @A.7`*i_
.> uUIjntSF(
1#w'<}h#U
7=wPd4
OCaml ,%^qzoZnT
let main () = YqQAogyh
print_endline "Hello world!";; D!g\-y
7;8DKY q
F!RzF7h1
Pascal hJc^NU5
program Hello; (ah^</
begin bxc!x>)
writeln('Hello, world!'); SuJa?VU1w
end. xo
GX&^=
7*MjQzg-P
O$*\JL
Perl A[hvT\X
#!/usr/local/bin/perl eWk
W,a
print "Hello, world!\n"; L> \/%x>Wx
kJ_XG;8
[G<SAWFg7
PHP FgnS+c3W(
<?php F2^qf
print("Hello, world!"); AMSn^75
?> ~a ]R7X7
1nZ7xCDK98
4qKMnYR
Pike Ly~s84k_po
#!/usr/local/bin/pike cT.8&EEW
int main() IxU#x*
{ L?&Trq7i
write("Hello, world!\n"); Z,QSbw@,7
return 0; %;ZDw@_<
} gyT3[*eh
lHc|:vG?
X-']D_f|,
PL/I 4yDWVd;
Test: procedure options(main); y**>l{!!
declare My_String char(20) varying initialize('Hello, world!'); +eVm+4WK
put skip list(My_String); ":vF[6K6
end Test; 3bK=Q3N
EJm*L6>@R&
%7SGQE#W_~
Prolog s $?u'}G3
goal )J(@e4;Rv
write("hello,world!"). =vD}O@tN
$.Qu55=z<
~E3"s
Python A4IPd
#!/usr/local/bin/python @~j--L
print "Hello, world!" OlcWptM$
(U_dPf
=|O><O|
REXX "tUc
say "Hello, world!" "o>` Y
7: .bqRu
eCy]ugsi%
Ruby Bc1MKE5
#!/usr/bin/ruby KKGwMJku}
print "Hello, world!\n" JrJTIUf_
mKZ^FgG
"SFs\] Z
Scheme <,+6:NmT
(display "Hello, world!") m'"Ra-
(newline) FZ@8&T
|W;EPQ+<
LT:*K!>NOL
sed (需要至少一行输入) x67,3CLy?
sed -ne '1s/.*/Hello, world!/p' )A*Sl2ew
?t"bF :!
n1@ Or=5
Smalltalk oh%/\Xu
Transcript show: 'Hello, world!' wg{Y6XyH
Mb\[` 4z
e*/ya 8p?
SNOBOL =G-u "QJ6
OUTPUT = "Hello, world!" A,f%0
eQR
END 0qk.NPMB0
9
?(P?H
Sp~gY]:
SQL 2\L}Ka|v
create table MESSAGE (TEXT char(15)); zE_t(B(Q
insert into MESSAGE (TEXT) values ('Hello, world!'); gLQbA$gB
select TEXT from MESSAGE; =:pN82.G
drop table MESSAGE; .,( ,<
J>S`}p
s[tFaB 1
Tcl 1`@rAA>h'
#!/usr/local/bin/tcl v}^
f8nVR
puts "Hello, world!" r/BiR0$E
>a5avSn
K0\Wty0
TScript o](nK5?
? "Hello, world!" i \u"+:j
^`Qh*:T$
%{K6
Turing !e(ZEV g
put "Hello, world!" #Cz6c%yK
t.tdY
hXM2B2[
UNIX-style shell MESPfS+
程序中的/bin/sh可改为您使用的shell aShZdeC*f
i4*!t.eI
#!/bin/sh o]@g%_3X
echo 'Hello, world!' m8ydX6~max
lITZ|u
?$\y0lHw/7
GUI (!&g (l;
26\*x
Delphi +6v;(] y
program HelloWorld; #$(wfb9
uses z0m[25FQG
Dialogs; !kg)8 4C[
begin vy+9Q5@W
ShowMessage('Hello, World!'); j])nkm7_
end. iWNTI
)QiHe}
C},$(2>0+
Nuva `L<)9*
<. gZ1|b
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) 7f`x-iH!]7
.> )gAFz+
w_
po47S4
m%?b"kxL[
Visual Basic |Zo_x}0
MsgBox "Hello, world!" R(sa.Q\D4
'或者 r
,,A%
Print "Hello, world!" 8!AMRE
p3r1lUw
P!)k 4n
Visual FoxPro hrr ;=q$
? "Hello, world!" E~|`Q6&Y
@5# RGM)5^
=7Y gES
X11 4$+9k;m'
用一个程序 A*:(%!
|fk,&5s
xmessage 'Hello, world!' @9rmm)TZ
NX*9nwp^
用C++和gtkmm 2 8@a|~\3-
ljrA^P,>P
#include <iostream> ?ixzlDto\
#include <gtkmm/main.h> -=]LQHuQ
#include <gtkmm/button.h> {l7@<xZ??M
#include <gtkmm/window.h> I({ 7a i
using namespace std; \..(!>,%F
3*gWcPGe
class HelloWorld : public Gtk::Window ^Y:Q%?uB/
{ zA/W+j$:
public: pPG@_9qf
HelloWorld(); m&Mvb[
virtual ~HelloWorld(); =c8U:\0
protected: r_Rjjo
Gtk::Button m_button; uGQCW\!"4
virtual void on_button_clicked();
ka&-tGg
}; uXNf)?MpA
VM3H&$d(h
HelloWorld::HelloWorld() : m_button("Hello, world!") NOa.K)^k
{ NB&u^8b
set_border_width(10); | We @p
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); 'ga1SbA]
add(m_button); IfZaK([
m_button.show(); GZc%*
} NwG&uc+Q
o+O\VNW
HelloWorld::~HelloWorld() {} 8[FC
*3<m<<>U
void HelloWorld::on_button_clicked() ++13m*fA
{ ':!;6v|L
cout << "Hello, world!" << endl; gHlahg
} NG_O I*|~
<