“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。 =
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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》。 = FQH
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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[z6 c)
Ada 8K qv)FjB
with Ada.Text_Io; use Ada.Text_Io; !O\r[c
procedure Hello is '*pq@|q;t
begin {`: !=
Put_Line ("Hello, world!"); R]dB Uu
end Hello; I4$a#;
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汇编语言 4 ClW*l
C1_NGOvT
x86 CPU,DOS,TASM QwiC2}/
MODEL SMALL hOV+}P6
IDEAL #Jn_"cCRLx
STACK 100H Sb<=ROCg@
,^3D"Tky
DATASEG 6^p6v
HW DB 'Hello, world!$' +um;
eL7
82$^pg>
CODESEG *{ .u\BL5
MOV AX, @data hZy"@y3Yq
MOV DS, AX l4; LV7Ji
MOV DX, OFFSET HW %n(
s;/_
MOV AH, 09H jE{z4en
INT 21H _L"rygit
MOV AX, 4C00H ve$P=ZuM
INT 21H OS3J,f}<=
END OIN]u{S
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g\ke,r6
x86 CPU,GNU/Linux,NASM ]fR
3f
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). V!oyC$eV
;Enter this into "hello.asm" then type: `jJb) z3D
;"nasm -f elf hello.asm" :Qf^@TS}O
;"ld hello.o -o hello" 6D$xG"c
;"./hello" P~~RK&+i
cu
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section .data ;data section declaration "k+QDQ3=
msg db 'Hello World!',0AH P)T:6K
len equ $-msg ;string length Dv$xP)./
.EI/0"^
section .text ;code section declaration J%nJO3,
global _start ;entry point (start of execution) X/@Gx 4
_start: mov edx,len ;string length pgI@[zp7
mov ecx,msg ;string start sg3%n0Ms.W
mov ebx,1 ;file handle: stdout 7JujU.&{6
mov eax,4 ;sys_write C?zC|0
int 80h ;kernel system call (bXCc
i22R3&C
mov ebx,0 ;return value Q
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mov eax,1 ;sys_exit Na#2sb[)
int 80h ;kernel system call HGPbx$!
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a+MC[aFr
x86 CPU,Windows,MASM32 TiH(HW|:
.386 $u>^A<TBN
.model flat,stdcall r!(~Y
A
option casemap:none RVD=CX
;Include 文件定义 ~!UxmYgO
include windows.inc \A':}<Rj
include user32.inc Y*4\K%e(
includelib user32.lib ~ejHA~QC
include kernel32.inc Bs^W0K$uBO
includelib kernel32.lib nHA2p`T
;数据段 Z";o{@p
.data Wc(?ezn
szCaption db 'A MessageBox!',0 A M# '(k(
szText db 'Hello,world!',0 ZM<1;!i
;代码段 ?Hq`*I?b9
.code 3B>!9:w~f
start: 6MZfoR
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK vq x;FAqZ
invoke ExitProcess,NULL 'I;pS)sb
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> b+hZ<U/
end start ]Dx5t&
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_c`Gxt%
AWK P4s:wuJ^
BEGIN { print "Hello, world!" } 64[j:t=N
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lO<Ujb#"R
BASIC D`Fl*Wc4H
传统版BASIC(例如GWBASIC): w)hJ0k
j'~xe3j
10 PRINT "Hello, world!" #*?a"
20 END a}MOhM6T
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或在提示符输入: R\6#J0&Y-
.0Cpqn,[
?"Hello, world!":END <TDgv%eg0
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现代版BASIC(例如Quick BASIC): Pf]L`haGN
6=FF*"-6E
Print "Hello, world!" aY6]NpT
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以下的语句在Quick BASIC中同样有效: he
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{DAwkJvb]
? "Hello,world!" Rg+V;C
C~
xqLLoSte
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BCPL %$S.4#G2
GET "LIBHDR" i |cSO2O+
XYf;72*
LET START () BE ?f:FmgQk
$( I 8e{%PK
WRITES ("Hello, world!*N") 3xbA]u;gp
$) )4 "G1R`3
D{\hPv
ASPfzW2
Befunge pZF`+642
"!dlrow olleH">v P3);R>j
, km.xy_v
^_@ v"\Q/5p
o)srE5
DL<r2h
Brainfuck 4,UvTw*2z
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< !=Cd1
$<
+++++++++++++++.>.+++.------.--------.>+.>. WY #pzBA
iwrS>Sm
L/#^&*'B
C Q;Xb-\\
#include <stdio.h> q=Q5s?sQc
N(6|TE2
int main(void) H"].G^V\6
{ kznmA`#jn
printf("Hello, world!\n"); Tj@s \@hv
return 0; B!yAam#^
} NkA|T1w7
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C++ ' !ZFK}
#include <iostream> P]1`=-
px".pYr0
int main() S"V|BU
{ JM@MNS_||(
std::cout << "Hello, world!" << std::endl; mQ:lj$Gf
return 0; j8_WEjG
} U2\zl
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e%u1O-*
C++/CLI WR%x4\,d#
int main() 0Evq</
{ mO(m%3
System::Console::WriteLine("Hello, world!"); ="JLUq*]s
} K9:I8E<
hZU@35~BN
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C# (C Sharp) Tz:mj
class HelloWorldApp rq:R6e
{ /2tgxm$}
public static void Main() ;gP@d`s
{ cEhwv0f!qS
System.Console.WriteLine("Hello, world!"); 2a3i]e5Kt
} s:~3|D][
} #0zMPh /U}
ej4xW~_
3T+#d-\
COBOL $i7iv
IDENTIFICATION DIVISION. gk1I1)p
PROGRAM-ID. HELLO-WORLD. YP5V~-O/
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b%
ENVIRONMENT DIVISION. 8fY1~\G:\
049E#[<Q"
DATA DIVISION. \,+act"v
Dh*Uv,
PROCEDURE DIVISION. tl !o;`W
DISPLAY "Hello, world!". y_;LTCj?
STOP RUN. _
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4en[!*
]hJ#%1
Common Lisp z
GhJ
(format t "Hello world!~%") nB[Aw7^|A
0hp*(, L
j|N;&s`
DOS批处理 tg_v\n
@echo off R/VrBiw
echo "Hello, world!" TyI"fP
}`FC'!(
w)2X0ev"
Eiffel Yg3Vj=
class HELLO_WORLD 7j8nDX<
}\!&3^I
creation $<xa "aN!
make vc0'x4
feature -]C3_ve
make is -|"W|K?nq
local HN9!~G
io:BASIC_IO fRS)YE@a:
do Q&
j: ai*
!!io f|P%
io.put_string("%N Hello, world!") :OT~xU==H
end -- make 7A@]t_83Y
end -- class HELLO_WORLD qq9fZZb
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=87.6Ai
Erlang -rb]<FrL^
-module(hello). BG\g`NK}Z
-export([hello_world/0]). y9kydu# q
?nZQTO7
hello_world() -> io:fwrite("Hello, World!\n"). (qG |.a
PQ9.aJdw@-
p~1!O]qLt
Forth +KGZk?%
." Hello, world!" CR #+I)<a7\
]k
&Y )
"ph&hd}S
Fortran 5v<X-8"
WRITE(*,10) +n_`*@SE
10 FORMAT('Hello, World!') {ULy B$\-
STOP "^_9t'0
END lv\C(^mGq
nK=-SQ
f_y+B]?'M
HTML k`[ L
<HTML> u2%/</]h
<HEAD> MY1s
<TITLE> Hello World! </TITLE> XaOq &7
</HEAD> [}-CXB
<BODY> oNH&VHjU
<p>Hello World!</p> !#s1'x{o
</BODY> iU]py
</HTML> s
wgn( -
K89 AZxH
i]oSVXx4WC
HQ9+ QbA+\
H $n>|9(K8
?|Y/&/;%I
o0t/
INTERCAL C QO gR GW
PLEASE DO ,1 <- #13 unn2MP'
DO ,1 SUB #1 <- #238 \@6PA
DO ,1 SUB #2 <- #112 _o'_ z ]
DO ,1 SUB #3 <- #112 QhV!%}7
DO ,1 SUB #4 <- #0 zfAHE{c
DO ,1 SUB #5 <- #64 =I.
b2e1z
DO ,1 SUB #6 <- #238 OY$P8y3MY
DO ,1 SUB #7 <- #26 ?fF{M%i-%
DO ,1 SUB #8 <- #248 0tV" X
DO ,1 SUB #9 <- #168 doM}vh)6
DO ,1 SUB #10 <- #24 `uK_}Vy_
DO ,1 SUB #11 <- #16 X$z@ *3=
DO ,1 SUB #12 <- #158 Byq4PX%B
DO ,1 SUB #13 <- #52 Pt<lHfd
PLEASE READ OUT ,1 5R6@A?vr
PLEASE GIVE UP
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Java Gc6`]7 s
public class Hello tS!|#h-J
{ e+J|se4L5
public static void main(String[] args) >:7W.QLRU
{ _h;#\ )%~
System.out.println("Hello, world!"); jn[%@zD }
} O{WJi;l
} tu(k"'aJ
4'L%Wz[6
J`F][ A
JSP :i'jQ<|wZN
<% ~]t/|xep
out.print("Hello, world!"); ODE9@]a
%> eLC}h %
w
s(9@
Zr!he$8(2
MIXAL (W.euQy
TERM EQU 19 the MIX console device number erG@8CG
ORIG 1000 start address dno=C
START OUT MSG(TERM) output data at address MSG CH
h]v.V
HLT halt execution )./pS~
MSG ALF "MIXAL"
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ALF " HELL" P\#z[TuHKC
ALF "O WOR" ) {=2td$=$
ALF "LD " Q)pm3Wi
END START end of the program Gp6|0:2,L~
NUB 3L
yj]\%3o<Z7
Nuva c o}o$}
<..直接输出..> 4.@gV/U(|
Hello, world! I^'U_"vB
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<..或者..> [ Tv!Pc
6wV{}K^0
<. 3)SO-Bz\
// 不带换行 JStT"*4j
? "Hello, world!" E2f9J{Ki=
?<@yo&)
// 或者 bY6y)l
5~WMb6/
// 带换行 Q{9#Am^6w
?? 'Hello, world!' S].=gR0:
.> H}KJd5A7
!wl3}]q
(bP\_F5D
OCaml e%#8]$
let main () = Q<]~>cd^
print_endline "Hello world!";; DkO>?n:-C
<&&xt
?I.
nr/^HjMV
Pascal m*VM1k V
program Hello; 1EW-%GQO
begin S&BJR!FQ
writeln('Hello, world!'); ]@@3]
end. 7.O1
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qG S]2KY
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Perl (^h47kY
#!/usr/local/bin/perl B@wQ[
print "Hello, world!\n"; ;D5B$ @W>
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r{m"E^K,
PHP 8e_ITqV%
<?php =A,32&;@N
print("Hello, world!"); V0p@wG3
?> A]nDI:pO|
,O=@I
mUi|vq)`=D
Pike sePOW#|
#!/usr/local/bin/pike 9gMNS6D'b
int main() 5p&&EA/
{
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write("Hello, world!\n"); maANxSzi
return 0; !"E&Tk}
} g+ `Ie'o<
l\8l.xP
ldJeja~Xl
PL/I r1cB<-bJ#'
Test: procedure options(main); 1KxtHLLU
declare My_String char(20) varying initialize('Hello, world!'); B8'(3&)My
put skip list(My_String); MI[=,0`D
end Test; %v++AcE
xBGSj[1`i
e W*nRha
Prolog >mI-h
goal B1@c`BJ;9T
write("hello,world!"). [ @>8Qhw
!:3NPjhf1Y
*(&,&$1K
Python S\<]|tM:x
#!/usr/local/bin/python ilv6A9/
print "Hello, world!" |N[SCk>Kj
DBi3 j
v~73
REXX 5Am*1S^
say "Hello, world!" h+$1+Es
g5TXs^g
RB'12^[
Ruby 2S^xqvh
#!/usr/bin/ruby fU~>A-P
print "Hello, world!\n" {pU Ou8`Z
c4CBpi?}
,*.C''
Scheme -W>zON|l
(display "Hello, world!") lkp!S3,
(newline) IsO'aFK)ln
AX8;x1t^.
_-g:T
sed (需要至少一行输入) Ai iOs?
sed -ne '1s/.*/Hello, world!/p' v
F L{j
DC`6g#*<
hD\C[C,
Smalltalk }/G~"&N[
Transcript show: 'Hello, world!' 5}e-~-
lqPRUkin
9&}qie,
SNOBOL 2q# t/oN3T
OUTPUT = "Hello, world!" Q>}I@eyJ
END Dbyy H_
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'dj}- Rs
SQL T$%u=$E%F
create table MESSAGE (TEXT char(15)); `A80""y:M
insert into MESSAGE (TEXT) values ('Hello, world!'); ?AY596
select TEXT from MESSAGE; 4BuS?
#_
drop table MESSAGE; _*Vq1D ]C
-GP+e`d
vzaxi;S<
Tcl fE)+9!
#!/usr/local/bin/tcl s4SR6hBO
puts "Hello, world!" ]8YHA}P
#.}Su+XF
l)VMF44
TScript ]@ETQ8QN
? "Hello, world!"
~PuPY:"
4E3HYZ
A'|W0|R9
Turing :KX/GN!n
put "Hello, world!" I?-9%4 8iM
Ltcr]T(Ic
V0JoUyZ
UNIX-style shell Cgw# c%
程序中的/bin/sh可改为您使用的shell l%B1JGu*F
%8
cFzyE*
#!/bin/sh _a*Wk
echo 'Hello, world!' hUGIy(
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KUH&_yCRB
GUI +cy(}Vp
wSV[nK
Delphi _* 4
<
program HelloWorld; )#3,y6
uses TdD-#|5
Dialogs; !0Xes0gK0
begin N!RyncJ
ShowMessage('Hello, World!'); wrsETB
c
end. \"Sqr(~_
5
+(YcV("
v-G(bw3
Nuva X+iA"B
<. f$V']dOj1q
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) {br4B7b
.> =]W{u`
5bmtUIj
)IZ$R*Y{
Visual Basic drtQEc>qT
MsgBox "Hello, world!" H3OH
'或者 Kt}dTpVFr
Print "Hello, world!" pJ_Z[}d)c
4B]8Mp~\aL
#C%<g:F8
Visual FoxPro o/)\Q>IY
? "Hello, world!" (a7IxW
w #(XiH*
'{( n1es
X11 m
U7Ad"
用一个程序 "c\T
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xmessage 'Hello, world!' nk-6W4
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用C++和gtkmm 2 E? F @
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#include <iostream> wm2Q(l*HH
#include <gtkmm/main.h> (nda!^f_s
#include <gtkmm/button.h> jIdhmd* $z
#include <gtkmm/window.h> ,PN>,hFL
using namespace std; ={maCYlE.
=Z-.4\ 3
class HelloWorld : public Gtk::Window i-E&Y*\^9H
{ )J#@L*
public: 62vz 'b
HelloWorld(); JI\u -+BE
virtual ~HelloWorld(); T/S-}|fhQ
protected: ,u]kZ ]
Gtk::Button m_button; J_P2% b=C
virtual void on_button_clicked(); 4TR:bQZs
}; 6dq U4
)sNtwSl^
HelloWorld::HelloWorld() : m_button("Hello, world!") 3wR5:O$H
{ hDp'=}85@
set_border_width(10); ;oR-\;]/.
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); 5&