“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。 U0+Hk+
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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》。 &.Jp,Xt)
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以下是用不同语言写成的Hello World程序的几个例子: x_JCH7-
Ada <[H1S@{W
with Ada.Text_Io; use Ada.Text_Io; f3+@u2Pv
procedure Hello is f@R j;R~Jp
begin C#<:x!
Put_Line ("Hello, world!"); XZv(B^
end Hello; ~7W?W<
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T>&d/$;]
汇编语言 wnL\.%Y^
0wLu*K5$4E
x86 CPU,DOS,TASM 24)3^1P\V
MODEL SMALL D! 1oYr
IDEAL E0<9NFQr7
STACK 100H aMSX"N"ot
-|MeC
DATASEG `o6Hm
HW DB 'Hello, world!$' pr8eRV!x
zUM;Qwl
CODESEG 2z7+@!w/
MOV AX, @data 99@uU[&IJ
MOV DS, AX n#
%mL<
MOV DX, OFFSET HW u6AReL'f
MOV AH, 09H IRemF@
INT 21H <|NP!eMsw8
MOV AX, 4C00H 4eym$UWw
INT 21H ?q(7avS9
END BpL,<r,
t%e}'?#^
2<Tbd"x?
x86 CPU,GNU/Linux,NASM coHzbD~#H
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). )v-sde\
;Enter this into "hello.asm" then type: +-=w`
;"nasm -f elf hello.asm" +zQ
a"Ep*
;"ld hello.o -o hello" X ?/C9
;"./hello" h&+dIk\[3
Ji_3*(
section .data ;data section declaration 3[E3]]OVa
msg db 'Hello World!',0AH u=h:d+rq@
len equ $-msg ;string length $ ZD1_sJ.
nk,X6o9%
section .text ;code section declaration 6.},y<E
global _start ;entry point (start of execution) }&)X4=
_start: mov edx,len ;string length TC80nP
mov ecx,msg ;string start /vi>@a
mov ebx,1 ;file handle: stdout m]8rljo
mov eax,4 ;sys_write 4tR:O#($V
int 80h ;kernel system call $9DV}
sv0)sL
mov ebx,0 ;return value wR\Y+Z
mov eax,1 ;sys_exit Kv'2^B
int 80h ;kernel system call \0iF <0oy
VLuhURI)
>(s)S[\
x86 CPU,Windows,MASM32 vT V'D&x2
.386 |*5K fxq
.model flat,stdcall cF9bSY_Eh
option casemap:none Xm./XC
;Include 文件定义 PG<tic<?
include windows.inc @UCGsw
include user32.inc Vu '3%~
includelib user32.lib -y70-K3
include kernel32.inc Z,%^BAJ
includelib kernel32.lib 6]yYiz2Xn
;数据段 l2"{uCcA
.data +jePp_3$O
szCaption db 'A MessageBox!',0 v1Tla]d
szText db 'Hello,world!',0 )$XW~oA'
;代码段 ^s/HbCA
.code !%{/eQFT4
start: B#Cb`b"
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK o(GXv3L
invoke ExitProcess,NULL p]/HZS.-b
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> m?DI]sIv#
end start f 4CS
1'or[Os3=
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AWK #~l(t_m{
BEGIN { print "Hello, world!" } ~Ts^z(v~D2
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n $RhD93
BASIC 'thWo wE
传统版BASIC(例如GWBASIC):
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'\8gY((7
10 PRINT "Hello, world!" k%|7H,7
20 END *Y"Kbn6
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或在提示符输入: ]n9o=^q/
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?"Hello, world!":END o!W
71
ol QT r
现代版BASIC(例如Quick BASIC): 6%bZZTP`
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Print "Hello, world!" F?#^wm5TZ
e 4-
以下的语句在Quick BASIC中同样有效: #9-qF9M
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? "Hello,world!" npC:SrI%
"mlVs/nsyG
E9e|+$
BCPL '4-J0S<<_
GET "LIBHDR" `|maf=SnY5
{;uOc{~+
LET START () BE a *?bnw?
$( nBw4YDR!
WRITES ("Hello, world!*N") {~J'J $hn8
$) to-DXT.
lrqu%:q
hKVj\88
Befunge O@*^2, 6
"!dlrow olleH">v oasp/Y.p
, |>_e&}Y%L
^_@ \*x'7c/qg
rCt8Q&mzf
i\~@2
Brainfuck NWnUXR
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ^3re*u4b=
+++++++++++++++.>.+++.------.--------.>+.>. M)sM G
C
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C 8t)5b.PS
#include <stdio.h> .V~z6
jSi\/(E
int main(void) =.T50~+M
{ Nfv.v1Tt+
printf("Hello, world!\n"); @ sLb=vb
return 0; UAleGR`,
} &CP]+ at
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+H"[WZ5
C++ #aHPB#
#include <iostream> :g&9v_}&K{
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int main() R( 2,1f=d
{ vwF#;jj\
std::cout << "Hello, world!" << std::endl; O_vCZW
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return 0; KHnq%#
} tqok.h
f/"?(7F
}Pi}?
41!
C++/CLI M N-j$-y}
int main() Sq<ds}o'8l
{ ;og[q
System::Console::WriteLine("Hello, world!"); olA 1,8
} m2sf]-?Y
^@91BY
Hs9; &C
C# (C Sharp) oU|yBs1
class HelloWorldApp b*5Yy/U
{ Gl am(V1
public static void Main() MBp,!_Q6
{ dZ6\2ok+
System.Console.WriteLine("Hello, world!"); +K2p2Dw(k
} }N^3P0XjYq
} 76IjM4&a
C!,|Wi2&
)By#({O
COBOL M\m6|P
IDENTIFICATION DIVISION. $3yzB9\a"
PROGRAM-ID. HELLO-WORLD. %imI.6
F7!q18ew
ENVIRONMENT DIVISION. fx74h{3u
D MzDV _
DATA DIVISION. xZ=6
0,{tBo
PROCEDURE DIVISION. "pA24Ze
DISPLAY "Hello, world!". yb/v?q?Fk
STOP RUN. RyuI2jEy
NzBX2
0&21'K)pW
Common Lisp z5tOsU
(format t "Hello world!~%") (Ts#^qC
zn+5pn&?
rl__3q
DOS批处理 ;o#wK>pk%M
@echo off .&Ik(792Z&
echo "Hello, world!" .\rJ|HpZ1J
1yK=Yf%B
!C6[m1F
Eiffel ^X\{MW'>4
class HELLO_WORLD 1b``y
'uBagd>*
creation W{!Slf
make gH
u!~l
feature Au"7w=G`f
make is C@F3iwTtp
local GZx?vSoHh
io:BASIC_IO h\<;N*Xi
do IKs2.sj"o
!!io -dO9y=?t
io.put_string("%N Hello, world!") .9uw@Eq
end -- make x2M{=MExE.
end -- class HELLO_WORLD o0&pSCK
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SbYsa
Erlang zNh$d;(O$^
-module(hello). .dw;b~p
-export([hello_world/0]). :k&5Z`>)
_GtG8ebr
hello_world() -> io:fwrite("Hello, World!\n"). lm[LDtc
8|2I/#F}]
}uo.N
Forth 4xsnN@b
." Hello, world!" CR r1]DkX <6
j0(+Kq:J
X"fSM
#
Fortran K/A1g.$
WRITE(*,10) kf-/rC)>
10 FORMAT('Hello, World!') j"Y5j
B`
STOP d{FD.eI0
END >XU93 )CX
@\)a&p]a
}'c@E0"
HTML z@tIC^s
<HTML> g@s'-8}X^
<HEAD> ,/1[(^e
<TITLE> Hello World! </TITLE> iosL&*'8
</HEAD> :G/.h[\R|
<BODY> Op
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<p>Hello World!</p> HLYo+;j3|
</BODY> Hphfqdh0`
</HTML> Ks/Uyu. X
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wf&1,t3Bgn
HQ9+ A1kqWhg\
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2nv-/%]
#Py\'
INTERCAL Ynx.$$`$=
PLEASE DO ,1 <- #13 \?K>~{)
DO ,1 SUB #1 <- #238 5Vu@gRk_
DO ,1 SUB #2 <- #112 a"pejW`m
DO ,1 SUB #3 <- #112 15U[F0b
DO ,1 SUB #4 <- #0 >&DNxw
DO ,1 SUB #5 <- #64 k_A
9gj1
DO ,1 SUB #6 <- #238 0o*
DO ,1 SUB #7 <- #26 ;Y"*Z2U
DO ,1 SUB #8 <- #248 eGW~4zU
DO ,1 SUB #9 <- #168 +jrMvk"
DO ,1 SUB #10 <- #24 m
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DO ,1 SUB #11 <- #16 :978D0}{p
DO ,1 SUB #12 <- #158 ANWUo}j
DO ,1 SUB #13 <- #52 "PtOe[Xk
PLEASE READ OUT ,1 9xZ?}S:d
PLEASE GIVE UP (U@uJ
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bR&<vrMmrA
Java FK!UUy;
public class Hello )WR*8659e
{ {WYmO1
public static void main(String[] args) c:f++||
{ =F>nqklc
System.out.println("Hello, world!"); GTBT0$9g.
} _>)=c<HL
} z ;KUIWg
v:w $l{7
=^D{ZZw{
JSP oEuo@\U05v
<% B'`
jdyaE9
out.print("Hello, world!"); iT}L9\
%> ;x~[om21;
U<Z\jT[
HZ.Jc"+M
MIXAL |&xjuBC
TERM EQU 19 the MIX console device number H,5##@X
ORIG 1000 start address
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START OUT MSG(TERM) output data at address MSG Pln*?o
HLT halt execution jy2@t *
MSG ALF "MIXAL" B$kp\yL
ALF " HELL" f8X/kz
ALF "O WOR" YkqauyV^
ALF "LD " @Tl!A1y?
END START end of the program D |BP]j}6
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z,#3YC{'
Nuva Me|+)}'p5h
<..直接输出..> twA2U7F
Hello, world! xgQ]#{tG
| Sf` Cs
<..或者..> ^FZ7)T
t1h2ibO
<. TPeBb8v8D
// 不带换行 {cF>,T
? "Hello, world!" `9yR,Xk=l
\mt>R[
// 或者 X/!37
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// 带换行 fpK`
?? 'Hello, world!' =P"Sm
r
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68v59)0U
S3( 2.c~
OCaml >|e>=
let main () = 9v2(cpZ
print_endline "Hello world!";; [Y^1}E*
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=
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Pascal !Ho=(6V
program Hello; D;l)&"|r?
begin LN?b6s75U
writeln('Hello, world!'); ^MZdht
end. 9+sOSz~
P
k-M-=VvA
LpJ_HU7@lk
Perl $*u{i4b
#!/usr/local/bin/perl <Gr775"
print "Hello, world!\n"; }M I9?\"q
6$JRV
`xO&!DN
PHP ]&D;'),
<?php Q hHexr6
print("Hello, world!"); yfD)|lK
?> G2x5% `
6c/Tm0[
A-dL_3
Pike H#joc0?P
#!/usr/local/bin/pike FSvtiNW<
int main() I@f">&^
{ Cl+TjmOV\`
write("Hello, world!\n"); #VwA?$4g`
return 0; q;kN+NK64
} e!5nz_J1}
FrNW@
4IIXzMOa
PL/I sO!YM5v8
Test: procedure options(main); Bi+a)_K
declare My_String char(20) varying initialize('Hello, world!'); Va1 eG]jQ
put skip list(My_String); |Gw[vY
end Test; -pRyN]YD
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?q%)8 E
Prolog +c699j;[
goal s)e;
c<(/
write("hello,world!"). 9%?'[jJ
h69: Tj!
\c! LC4pE
Python F H'jP`
#!/usr/local/bin/python N>fC"
print "Hello, world!" xwH+Q7O&l
SRN:!-
!S/hH% C
REXX BHwQB2t gc
say "Hello, world!" cs ?@Ri=g
!8|] R
S"iQQV{)Z
Ruby vYD>m~Qc^
#!/usr/bin/ruby {9<2{$Og
print "Hello, world!\n" l.i"Z pik
)y7SkH|
AUnRr +o
Scheme [G/q*a:K
(display "Hello, world!") sq_N!
(newline) eXa a'bTx
GRC=G&G
\kiCczW_
sed (需要至少一行输入) N.q4Ar[x#p
sed -ne '1s/.*/Hello, world!/p' c?0uv2*Yh
c
25wm\\
X,/@#pSOz
Smalltalk xw5E!]~D
Transcript show: 'Hello, world!' F6T@YSP
?wps_XU
lHpo/R:
SNOBOL [)`9euR%
OUTPUT = "Hello, world!" :\*hAV1i
END Y"mD)\Bw?
;<#fZ0(l;
hGH{Xp[mW
SQL <?P UF,
create table MESSAGE (TEXT char(15)); ^yKP 99(
insert into MESSAGE (TEXT) values ('Hello, world!'); j=)%~@
select TEXT from MESSAGE; PZ-|W
drop table MESSAGE; %HuQc^
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u pf7:gk +
Tcl {MKq
Yl{
#!/usr/local/bin/tcl *g5df[
puts "Hello, world!"
^sq3@*hCw
Kbc-$oneR
YE5v~2
TScript sHe:h XG'
? "Hello, world!" BNg\;2r
-9{}rE
y^zVb\"4
Turing Vzz0)`*hQ
put "Hello, world!" Yuze9b\[
bK%go
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g?
UNIX-style shell 4j)Y>
程序中的/bin/sh可改为您使用的shell =L<OTfVE
Y,?
#!/bin/sh O#7fkL
echo 'Hello, world!' C["^%0lj
##,i<
V0L^pDLOV
GUI doXd6q4H
E8>npDFv.
Delphi 3l>P>[<o
program HelloWorld; IqEY.2KN
uses L]#J?lE&
Dialogs; Ydmz!CEu
begin oC U8;z
ShowMessage('Hello, World!'); gsc*![N
end. ls,gQ]B:P
")HTUlcAe}
sEdWBT 8
Nuva l~&efAJ-$
<. `R8~H7{I6
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) ~MO'%'@
.> J mFzSR?}
-MHu BgYJ-
Z|d_G}
Visual Basic }tx~y-QQ
MsgBox "Hello, world!" >S{1=N@Ev=
'或者 kOR%<#:J
Print "Hello, world!" 8pDJz_F!{
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[O [N _z
Visual FoxPro I_#)>%H
? "Hello, world!" #>~$`Sg
h&yaug,.
Y*f7& '[
X11 >K-O2dry*
用一个程序 [ne4lWaE<y
-.g5|B
xmessage 'Hello, world!' d2.eDEOsC
f]5bAs
用C++和gtkmm 2 u
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ClVMZ
#include <iostream> 43:~kCF[s
#include <gtkmm/main.h> sj. eJX"z
#include <gtkmm/button.h> Um15@p;
#include <gtkmm/window.h> vn0XXuquzC
using namespace std; f|6%71
?ArQ{9c
class HelloWorld : public Gtk::Window |=38t8Ge&
{ I U4[}x
public: ?b8NEVjw
HelloWorld(); 15U=2j*.b
virtual ~HelloWorld(); # JuO
protected: {(7.X4\x
Gtk::Button m_button; q97Dn[>3
virtual void on_button_clicked(); +#Ov9b
}; )_.@M '?
h{<^?=
HelloWorld::HelloWorld() : m_button("Hello, world!") |EU}&