“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。 Yw?%>L
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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》。 +~w '?vNc
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以下是用不同语言写成的Hello World程序的几个例子: ={#r/x
Ada ApU5,R0
with Ada.Text_Io; use Ada.Text_Io; owmA]f
procedure Hello is l~ F,i n.
begin 0fi+tc30
Put_Line ("Hello, world!"); !. q*bY
end Hello; s7a\L=#p(
DX4
95<6*
=1`
汇编语言 k9yA#
O?8G
x86 CPU,DOS,TASM xV<NeU
MODEL SMALL MttVgNV
IDEAL <aL$d7
STACK 100H X@|
ro^Y$;G
DATASEG bG2!5m4L
HW DB 'Hello, world!$' ?=Ma7 y
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CODESEG R:^GNra;
MOV AX, @data l}:9)nXA{
MOV DS, AX ~[ve?51
MOV DX, OFFSET HW cJi5\<b
MOV AH, 09H //V?rs
INT 21H
(nvSB}?
MOV AX, 4C00H G^)|c<'M
INT 21H /+02BP
END |`:Uww+3
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mQo]k
x86 CPU,GNU/Linux,NASM H^'*F->BA
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). z@T;N'EM
;Enter this into "hello.asm" then type: ")x9A&p
;"nasm -f elf hello.asm" )9L1WOGi
;"ld hello.o -o hello" E*rDwTd
;"./hello" T'fE4}rY
P9X/yZ42
section .data ;data section declaration ^[^uDE
<
msg db 'Hello World!',0AH =0x[Sa$&,
len equ $-msg ;string length )0qXZgs
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%1
section .text ;code section declaration xJc'tT6@
global _start ;entry point (start of execution) rpDH>Hzq
_start: mov edx,len ;string length D&Ngg)_Mq
mov ecx,msg ;string start (W*yF2r
mov ebx,1 ;file handle: stdout o7]h;Zg5r
mov eax,4 ;sys_write w;>]L.n
int 80h ;kernel system call Dve5Ml-
y5+-_x,
mov ebx,0 ;return value 9I^_n+E
mov eax,1 ;sys_exit QJGRi
int 80h ;kernel system call _y5b>+
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{_ewc/~
x86 CPU,Windows,MASM32 Q$Vxm+
.386 3#0nus|=S
.model flat,stdcall PJh\U1Z
option casemap:none s)xfTr_$
;Include 文件定义 j0:F E
include windows.inc ~mmI]
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include user32.inc 0+cRUH9Ew
includelib user32.lib 4.CLTy3W
include kernel32.inc GD~3RnGQ{
includelib kernel32.lib hMi!H.EX.
;数据段 "+Xwc+v^
.data ad
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szCaption db 'A MessageBox!',0 s~M!yuH
szText db 'Hello,world!',0 :jB(!XH
;代码段 s+Ln>c'|o
.code w;r -TLf
start: ?ew^%1!W.
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK f,`FbT
invoke ExitProcess,NULL 3cQTl5,
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CaZEU(i
end start Tje =vI
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1sn!!
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BEGIN { print "Hello, world!" } ^>[DG]g
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BASIC 2ORWdR.b
传统版BASIC(例如GWBASIC): oBKZ$&_h
>nvreis
10 PRINT "Hello, world!" $0iz;!w
20 END !4I?59
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或在提示符输入: |K/#2y~
N-K.#5
?"Hello, world!":END -[Zau$;J<
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现代版BASIC(例如Quick BASIC): 83;1L:}`
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Print "Hello, world!" nV"[WngN
5
BcuLRId:
以下的语句在Quick BASIC中同样有效: ,7/un8:%c
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? "Hello,world!" gh i!4
B:+}^=
>JCSOI
BCPL OdwSNG
GET "LIBHDR" @RbAC*Y]g
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LET START () BE kD MS7y<s
$( ( 9dV%#G\
WRITES ("Hello, world!*N") v`x~O+
$) ^/Gjk
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Yg2z=&p-{"
Befunge $@8\9Y
{
"!dlrow olleH">v l]3g6c
, :M|bw{P*
^_@ ^b>E_u
,FS iE\
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Brainfuck A(;J
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< bs%]xf
~D;
+++++++++++++++.>.+++.------.--------.>+.>. 69yTGUG3
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C %z8@;
#include <stdio.h> bp$8hUNYz-
alHwN^GhP
int main(void) },[S 9I`p
{ uvD6uIW<
printf("Hello, world!\n"); %,~; w0
return 0; G.B^C)guu
} $.V(_
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C++ ;M4N=G Wd4
#include <iostream> y^M'&@F
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int main() y~ ^>my7G
{ V~e1CZ(2X
std::cout << "Hello, world!" << std::endl; s/Q}fW$ex
return 0; -uO< ]
} Vy-S9=
/:awPYGH<1
#c/v2
C++/CLI \4zvknk<
int main() nwcT8b87J
{ 0b*a2_|8k
System::Console::WriteLine("Hello, world!"); Z][?'^`^!
} du'$JtZo
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9Cf^Q3)5o
C# (C Sharp) kQVl8KS
class HelloWorldApp 1{";u"q
{ <!DOCvd
public static void Main() 8'g/WZY~~
{ Z.<1,EKi=
System.Console.WriteLine("Hello, world!"); z^B!-FcIz>
} +H="5uO<
} )](8{}wo
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66Hu<3X P
COBOL >|z=-hqPK
IDENTIFICATION DIVISION. %$sWNn
PROGRAM-ID. HELLO-WORLD. pR\etXeL d
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ENVIRONMENT DIVISION. _Q.3X[88C
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DATA DIVISION. 8
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PROCEDURE DIVISION. L/<Up
DISPLAY "Hello, world!". m^]/
/j
STOP RUN. {-17;M$
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hb?
|fi
Common Lisp _MMz x2}
(format t "Hello world!~%") YT&_{nL#\
Iun!rv
ap;UxWqx
DOS批处理 mT-5Ok&TUe
@echo off 8^< -;
echo "Hello, world!" u c7Y8iO
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B8a!"AQ~5
Eiffel 2M1yw "
class HELLO_WORLD R
8Iac[N
Y|B/(
creation ,LzS"lmmo
make |h6@hB\
feature Zjo9c{\
make is L{gFk{@W
local >u4uV8S
io:BASIC_IO ,&)XhO?
do =
b)q.2'#
!!io Ud{-H_m+
io.put_string("%N Hello, world!") luC',QJB
end -- make 8,kbGlSD
end -- class HELLO_WORLD #+_OyZ*
rv(N0p/
-C(Yl=
Erlang &y1iLk h ^
-module(hello). Li|~%E1
-export([hello_world/0]). L~)8Q(f
0Fon`3(^\
hello_world() -> io:fwrite("Hello, World!\n"). P (7Q8i'
zj]
g^c;
(B$>o.(JA
Forth !ry+{v+A
." Hello, world!" CR `pCy:J?d>l
- E GZ
IAGY-+8e
Fortran mF~]P8
WRITE(*,10) ]NBx5m+y@i
10 FORMAT('Hello, World!') B0gD4MX/
STOP @iV-pJ-
END E9I08AODS
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HTML r,.j^a
<HTML> EATVce]T
<HEAD> #oa>Z.?_V
<TITLE> Hello World! </TITLE>
D8u`6/^
</HEAD> T:'JA
<BODY> =v::N\&
<p>Hello World!</p> k ZF<~U
</BODY> 4t
}wMOR
</HTML> ^78N25RU(
1aIGC9xQ`
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HQ9+ ,D }Ka?
H Cj4Y, N
sT!?nn3O`
i~v[3e9y7
INTERCAL s#aj5_G
PLEASE DO ,1 <- #13 b/m.VL
DO ,1 SUB #1 <- #238 _+aR|AEC
DO ,1 SUB #2 <- #112 '{.4~:
DO ,1 SUB #3 <- #112 @ewi96
DO ,1 SUB #4 <- #0 %5zIh[!1$
DO ,1 SUB #5 <- #64 #"!ga)a%L
DO ,1 SUB #6 <- #238 Q<D_QJ
DO ,1 SUB #7 <- #26 wGT>Xh!
DO ,1 SUB #8 <- #248 gt.F[q3
DO ,1 SUB #9 <- #168 ;>6~}lMgJ
DO ,1 SUB #10 <- #24 O.QR1
DO ,1 SUB #11 <- #16 `W@jo~y<
DO ,1 SUB #12 <- #158 L-}Uj^yF
DO ,1 SUB #13 <- #52 pGR3
PLEASE READ OUT ,1 3b0|7@_E
PLEASE GIVE UP ohx$;j
|4pl}:g/Z
?qSwV.l]d
Java fUY05OMZ
public class Hello /%,aX[
{ s:xJ }Ll
public static void main(String[] args) 6Sn&;ap
{ Z:AB(c
System.out.println("Hello, world!"); f'5
6IT
} nt()UC`5
} =8`KGeP$
#prYZcHv:_
.5s58Hcg,
JSP D]"W|.6@
<% Da8gOZ
out.print("Hello, world!"); Xp06sl7 M
%> ic!% } S?
4[kyzz x
N;-%:nC
MIXAL BxV>s+o&]
TERM EQU 19 the MIX console device number u
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ORIG 1000 start address zY*~2|q,s
START OUT MSG(TERM) output data at address MSG Cc{{9Ud
HLT halt execution HbB8A#u
MSG ALF "MIXAL" ]u-bJ
ALF " HELL" AD`5:G
ALF "O WOR" MS#*3Md&y
ALF "LD " nu1XT 1q1
END START end of the program Xr8fmJtg'
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S},Cz
Nuva hG#2}K_
<..直接输出..> &{<hY|%
Hello, world! W*_c*
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<..或者..> j[\:#/J
D bi ^%
<. 7R79[:uwJ
// 不带换行 (gVN<Es
? "Hello, world!" O"o|8
l}M/
tl~ZuS/
// 或者 Vi^vG`L9
-u"|{5? '
// 带换行 i4k [#x
?? 'Hello, world!' Btzes.
.> 8pr toCB
^;s/4
C%E~9_w
OCaml J|
wk})?
let main () = FF^h(Ea
print_endline "Hello world!";; 1Vz^?t:
"PN4{"`V
*!
:j$n;
Pascal sk8DW
program Hello; C:^
:^y
begin t$t'{*t(
T
writeln('Hello, world!'); ND.(N'/O
end. I9xu3izAmR
(b[=~Nh'
owA8hGF
Perl C<9GdN
#!/usr/local/bin/perl J> ,w},`
print "Hello, world!\n"; *3={s"a.(
v_U/0
0
&XI9%h9|
PHP -^`s#0( y^
<?php X|!@%wuGC
print("Hello, world!"); > vXJ9\
?> [) >Yp-n
C}3a^j
l4taD!WD/
Pike jP}Ry=V/
#!/usr/local/bin/pike :a2[d1
int main()
=a=:+q g
{ qj:[NPwaM
write("Hello, world!\n"); keD?#yY
return 0; ju;OQC~[L]
} iumwhb
?-3G5yy
rB]2qk`/'
PL/I ~rjK*_3/
Test: procedure options(main); Yuf+d-%
declare My_String char(20) varying initialize('Hello, world!'); E'mT%@MOM
put skip list(My_String); }Ptv[{q]GE
end Test; tzgaHN
%rlqq*
SQU@JKi;g
Prolog jz;{,F
goal ,+h<qBsV@
write("hello,world!"). >jTiYJI_M
CXz9bhn<4
FcZ)^RQ4G
Python reYIF*
#!/usr/local/bin/python hMS:t(N{
print "Hello, world!" <liprUFsn
A@d 2Ukv
Wql=PqF
REXX VFnxj52<
say "Hello, world!" 9+<A7PM1T
ABp8PD
jG& 8`*|*
Ruby |cuKC \
#!/usr/bin/ruby 0d:t=LKw)
print "Hello, world!\n" :wRfk*Ly
!U2<\!_
e~># M$
Scheme T\4>4eX-
(display "Hello, world!") Vx5fQ mx
(newline) O#J7GbrHO
%$)Sz[=
LB$0'dZU
sed (需要至少一行输入) yD!GgnW
sed -ne '1s/.*/Hello, world!/p' /?Y4C)G
w&es N$2
k[<i+C";
Smalltalk s{X+0_@Q
Transcript show: 'Hello, world!' 4T$jY}U
Dh#5-Kf%
4y5Q5)j
SNOBOL S_??G:i
OUTPUT = "Hello, world!" b 5K"lPr
END &ns??:\+T
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L9,GUtK{
SQL ?/@XJcm+
create table MESSAGE (TEXT char(15)); 7rGp^
insert into MESSAGE (TEXT) values ('Hello, world!'); tOk=m'aUK
select TEXT from MESSAGE; Abmi=]\bx
drop table MESSAGE; )`W|J%w+
0/z$W.!
:]8A;`G}
Tcl xa?auv!
#!/usr/local/bin/tcl 9MQwc
puts "Hello, world!" |KPNl\%ID
/=#~8
&FZ~n?;hQ
TScript ) R5[aO
? "Hello, world!" &K=)YpT
]*)l_mut7
i"DyXIrk2
Turing td$RDtW[3
put "Hello, world!" #!yX2lR
[(8s\>T
wA,-!m
UNIX-style shell +zo\#8*0MF
程序中的/bin/sh可改为您使用的shell mL;oR4{
1guiuR4
#!/bin/sh A~0yMww:$
echo 'Hello, world!' rT4q x2 u
Y~#.otBL&
fp 3`O9+em
GUI ose)\rM'
/6 x[C
Delphi 7}&vEc@w&
program HelloWorld; Ck/w:i@>?
uses K}whqe]j
Dialogs; )7E7K%:b,
begin (CYQ>)a
ShowMessage('Hello, World!'); gKWUHlQY
end. =|^R<#%/
LiGECqWBa'
_4k zlD
Nuva Yfz`or\@=
<. ^8?px&B y:
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) RO'b)J:j9
.> d:z7
U
6s!=de
k$7Kz"
Visual Basic l?^}n(_.
MsgBox "Hello, world!" >4=7t&h
'或者 {HVsRpNEf
Print "Hello, world!" sbhUW>%.
C,<FV+r=^
mGw*6kOIS
Visual FoxPro cj#.Oaeq*
? "Hello, world!" w,!N{hv(
_.W;hf`
h}oV)z6
X11 %;GRR (K
用一个程序 [zCKJR
A- #c1KU!
xmessage 'Hello, world!' ^'b\OUty-
g- INhzMu
用C++和gtkmm 2 PL3oV<\4s>
1n>AN.nI
#include <iostream> Q$yQ^ mG
#include <gtkmm/main.h> p%\&M bA
#include <gtkmm/button.h> eFQz G+/
#include <gtkmm/window.h> dA(+02U/.
using namespace std; ,LU|WXRB
a3 t||@v!
class HelloWorld : public Gtk::Window Jb7^'P
{ y]ya.YG
public: *44E'Dxv
HelloWorld(); uUv^]B 8GM
virtual ~HelloWorld(); +\cG{n*
protected: t6%zfm
Gtk::Button m_button; R:44Gv7
virtual void on_button_clicked(); &?9~e>.OS
}; *E/CNMn=E
EPEn"{;U
HelloWorld::HelloWorld() : m_button("Hello, world!") I$fm"N
{ =u5( zaBe
set_border_width(10); 5J6~]J
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); O<?.iF%
add(m_button); 7VfPS5se
m_button.show(); U\"FYTC
} v dU)
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HelloWorld::~HelloWorld() {} pE G!j ~
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void HelloWorld::on_button_clicked() ,@8*c0Y~<!
{ aq^OzKP?
cout << "Hello, world!" << endl; u&o<>d;)
} bI)%g
lygv#s-T
int main (int argc, char *argv[]) 94[8~_{fG
{ OI^qX;#Kd
Gtk::Main kit(argc, argv); u$(XZ;Jg
HelloWorld helloworld; j3'SM#X
Gtk::Main::run(helloworld); CEI.*Iywu
} W3B:)<