“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。 iSK+GQ~
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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》。 eZhPu'id\s
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以下是用不同语言写成的Hello World程序的几个例子: k4J8O3E
Ada >r5P3G1
with Ada.Text_Io; use Ada.Text_Io; Lr;(xw\['
procedure Hello is |8_JY2
R
begin D,l,`jv*
Put_Line ("Hello, world!"); JF9yVE -
end Hello; 10Wz,vW,n
!4@G3Ae22
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汇编语言 aAvsb$
59uwB('|lH
x86 CPU,DOS,TASM &>WWzikB*
MODEL SMALL SM 0M%
IDEAL f}c\_}(
STACK 100H ]36sZ
*
f},oj4P\
DATASEG FX<b:#
HW DB 'Hello, world!$' IHfzZHy
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CODESEG wle@vCmr
MOV AX, @data ivgpS5 M`Y
MOV DS, AX gJt`?8t
MOV DX, OFFSET HW K[\'"HyQ,X
MOV AH, 09H W)j|rz.
INT 21H Nb2Qp
K
MOV AX, 4C00H +Z2MIC|Ud
INT 21H h~U02"$
END kyh_9K1
C) QKPT
0XwHP{XaO
x86 CPU,GNU/Linux,NASM 7DW]JK l
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). =bh*[,-
;Enter this into "hello.asm" then type: RIM`omM
;"nasm -f elf hello.asm" I:(m aMc
;"ld hello.o -o hello" jcCoan
;"./hello" <BWkUZz\P|
39U5jj7i
section .data ;data section declaration k@>\LR/v
msg db 'Hello World!',0AH :Br5a34q
len equ $-msg ;string length Hs"(@eDV&J
;wiao(t>4N
section .text ;code section declaration z><5R|Gf
global _start ;entry point (start of execution) &Wp8u#4L
_start: mov edx,len ;string length bo"%0?3n
mov ecx,msg ;string start |XYEn7^r
mov ebx,1 ;file handle: stdout 4Ph0:^i_
mov eax,4 ;sys_write &MmU
int 80h ;kernel system call 87!C@XlK_
i[C~5}%
mov ebx,0 ;return value +@9gkPQQ-@
mov eax,1 ;sys_exit x"kjs.d7[<
int 80h ;kernel system call s6*ilq1
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dCYCHHHF
x86 CPU,Windows,MASM32 ;^
wd_
.386 S|V4[ssB
.model flat,stdcall *F^wtH`
option casemap:none l@j.hTO<
;Include 文件定义 Uk*IpP`
include windows.inc )O+}T5c=
include user32.inc m8Vdb"0
includelib user32.lib %A1@&xrbl
include kernel32.inc # M, 7
includelib kernel32.lib 6dH }]~a
;数据段 #qU-j/Qf
.data Bm$"WbOq*R
szCaption db 'A MessageBox!',0 %m,6}yt
szText db 'Hello,world!',0 -W{DxN1
;代码段 TQX)?^Ft
.code #v#<itfFH
start: c:S] R"
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK UEs7''6RM
invoke ExitProcess,NULL B0$:b!
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> UrlM%Jnq1
end start C,V%B
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AWK I3 =#@2
BEGIN { print "Hello, world!" } 5IOFSy`
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BASIC 'C$XS>S
传统版BASIC(例如GWBASIC): 3P~o"a>
<H3ezv1M
10 PRINT "Hello, world!" # ,uya2!)
20 END <99M@ cF
^m#-9- `
或在提示符输入: k$5 s{q
`.x$7!zLC
?"Hello, world!":END H|ozDA
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现代版BASIC(例如Quick BASIC): &uP~rEJl+
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Print "Hello, world!" "gd=J_Yw
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以下的语句在Quick BASIC中同样有效: T@}|zDC#
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? "Hello,world!" +[\eFj|=
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gh`m*@
BCPL 7\_o.(g#-
GET "LIBHDR" Nu8Sr]p
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LET START () BE !8 &=y
$(
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WRITES ("Hello, world!*N") fQrhsuCrC
$) HW&%T7
a
2|\A7.
HM>lg`S
Befunge '|;X0fD
"!dlrow olleH">v TJE\A)|>g
, Vcd.mE(t%
^_@ Q1V9PRZX
e1//4H::t
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Brainfuck nRd)++
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< S"9zc
,]
+++++++++++++++.>.+++.------.--------.>+.>. !lo/xQ<
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C 0"~i^
#include <stdio.h> 4k./(f2+
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int main(void) W0I#\b18
{ -i-? .:
printf("Hello, world!\n"); tTd\|
return 0; p~LrPWHSTP
} )O:0]=#))
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C++ YBh'EL}P
#include <iostream> .k,YlFvj
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int main() r(gXoq_w
{ YKQr,
Now
std::cout << "Hello, world!" << std::endl; SwZA6R&
return 0; dH( ('u[
} [9:9Ql_h
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C++/CLI ,AT[@
int main() *hcYGLx
r
{ tDUwy^j
System::Console::WriteLine("Hello, world!"); w&ak"GgV
} 1'?4m0W1
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1^gl}^|B
C# (C Sharp) y(
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class HelloWorldApp 4*$G & TX
{ 4[N^>qt =
public static void Main() $ MC)}l
{ >t7x>_~
System.Console.WriteLine("Hello, world!"); oY, %Iq
} XVU2T5s}
} .ji_nZ4.+
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bV"G~3COy
COBOL <I;2{*QI2
IDENTIFICATION DIVISION. c*~]zR>s!
PROGRAM-ID. HELLO-WORLD. ~y7jCcd`
mkR2i>
ENVIRONMENT DIVISION. f7}*X|_Y
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DATA DIVISION. #Qkroji
qw
aM;W$1h
PROCEDURE DIVISION. /7
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DISPLAY "Hello, world!". sq'Pyz[[
STOP RUN. [<KM?\"1<
M+x,opl
1UQHq@aM
Common Lisp CJhL)0Cs
(format t "Hello world!~%") 1x,tu}<u^
h;0S%ZC
YX#-nyK
DOS批处理 AQ='|%
@echo off wm^J;<T[
echo "Hello, world!" .rf"
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=lpQnj"
+}a ]GTBgA
Eiffel Q1z;/A$Al
class HELLO_WORLD iya"ky~H
=yy5D$\
creation '{B!6|"X
make -neKuj
feature \!ej<T+JR>
make is 9 '2_
local 0c#/hFn
io:BASIC_IO ;{[.Zu
do ~_!F01s
!!io Ft!],n-n*
io.put_string("%N Hello, world!") RZCq {|L
end -- make H8On<C=
end -- class HELLO_WORLD *H|M;G
;"m ,:5%
]i)j3WDz]
Erlang 7!N2-6GV
-module(hello). ~b2wBs)r
-export([hello_world/0]). ::/j$bL
y? co|
hello_world() -> io:fwrite("Hello, World!\n"). (!zy{;g|
s4uhsJL V$
h?azFA~
Forth g"> {9YE
." Hello, world!" CR c=`wg$2:5
ih;]nJ]+-
9\DQ>V TQ
Fortran w4d--[Q
WRITE(*,10) )
v,:N.@Q
10 FORMAT('Hello, World!') Ht4;5?/y
STOP =pC3~-;3
END K/tRe/t}
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HTML N^HUijw<
<HTML> C\/xl#e<@
<HEAD> ,sA[)wP {
<TITLE> Hello World! </TITLE> i@P)a'W_
</HEAD> jhXkSj
<BODY> |uqf:V`z:
<p>Hello World!</p> xC*6vH]?
</BODY> 'oF%,4 !Y
</HTML> ^T ?RK"p
1<BX]-/tP
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HQ9+ oFy=-p+C
H /tP|b_7O
+W:=e,=
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INTERCAL 0'V5/W
PLEASE DO ,1 <- #13 MaRi+3F
DO ,1 SUB #1 <- #238 W=#:.Xj[
DO ,1 SUB #2 <- #112 bu:S:`
DO ,1 SUB #3 <- #112 +?u~APjNN
DO ,1 SUB #4 <- #0 8Eakif0CO
DO ,1 SUB #5 <- #64 d]:I(9K
DO ,1 SUB #6 <- #238 4SlADvGl
DO ,1 SUB #7 <- #26 Y%PwktQm
DO ,1 SUB #8 <- #248 N['qgO/
DO ,1 SUB #9 <- #168 e?7&M
DO ,1 SUB #10 <- #24 @\|_
DO ,1 SUB #11 <- #16 }._eIx"
DO ,1 SUB #12 <- #158 h3bff#<K
DO ,1 SUB #13 <- #52 JHz
[ 7
PLEASE READ OUT ,1 7on.4/;M
PLEASE GIVE UP )z&/_E=
Qa.<K{m#?
/LO-HnJ
Java f!s=(H;
public class Hello 3):A
{ t.laO. 3
public static void main(String[] args) :?/cPg'D
{ ^r*r
w=
System.out.println("Hello, world!"); &;+-?k|
} VY~yg*
} @xbQ Ye%J
(vb
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2
dAB-d:k
JSP ^c&L,!_)H
<% A<1hOSCz\
out.print("Hello, world!"); }
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%> yp$_/p O=2
Pb?$t
AQ_|:
MIXAL "br,/Dk>MX
TERM EQU 19 the MIX console device number w+yC)Rmz
ORIG 1000 start address
yls
^ cyX
START OUT MSG(TERM) output data at address MSG f ` R/
i
HLT halt execution 8Le||)y,\
MSG ALF "MIXAL" f6p-s
y>
ALF " HELL" [/Rf\T(,jn
ALF "O WOR" 5*1D$mxD"
ALF "LD " ;`^WGS(3.%
END START end of the program oZ!m
^R# E:3e
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Nuva tD+9kf2
<..直接输出..> h"_MA_]~
Hello, world! :E:38q,hG
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<..或者..> H[S%J3JI
b)=[1g/=L
<. 0a}u;gt,4w
// 不带换行 ;xzUE`uUfJ
? "Hello, world!" T[j#M+p
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// 或者 b/C`Jp
)?X-(4
// 带换行 S/4^ d &Gr
?? 'Hello, world!' 0l-Ef1
.> @te!Jgu{
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:9^;Qv*
OCaml 2oNk93D
let main () = %Ti}CwI`
print_endline "Hello world!";; f!!V${)X
T>R0T{A
_nbBIaHN{
Pascal ]
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program Hello; =8; {\
begin <gJU?$
writeln('Hello, world!'); >hk=VyU;
end. N6 (
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Perl
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#!/usr/local/bin/perl &8l%T'gd
print "Hello, world!\n"; u%$Zqee
oAPb*;}
/4`
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PHP <iH`rP#
<?php 1e&QSzL
print("Hello, world!"); W!?7D0q
?> iy 14mh\ ~
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rmE" rf
Pike
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#!/usr/local/bin/pike dv.(7Y7.x
int main() WC.t_"@
{ {a4z2"\A
write("Hello, world!\n"); )FpZPdN+h
return 0; V??dYB(
} Lz:(6`S
}lfnnK#
TW[_Ko86
PL/I :j]vf8ec
Test: procedure options(main); d"6&AJ5a
declare My_String char(20) varying initialize('Hello, world!'); |b|&XB_<]Z
put skip list(My_String); 1$%V{4bJ
end Test; >]W)'lnO
*X,
/7C
2U; t(,dn'
Prolog ,=|ZB4HA
goal 3AsT
write("hello,world!"). ^Nmg07_R
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69J4=5lX
Python <j5NFJ9
#!/usr/local/bin/python wAxrc+
print "Hello, world!" /6h(6 *JI
,;(PwJe
&9"-`-[e:
REXX "Q?k'^@
say "Hello, world!"
8`fjF/
{WPobP"
k5C@>J
Ruby &d5ia+#
#!/usr/bin/ruby ^1L>l9F
print "Hello, world!\n" m
q{];
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:P@rkT3Q t
Scheme 6p?JAT5
(display "Hello, world!") Ldl5zc
(newline) ,iv|Pq$!
2w-51tqm
{FG|\nPw
sed (需要至少一行输入) Ko/ I#)
sed -ne '1s/.*/Hello, world!/p' ^4`Px/&
&ZX{R#[L
vMs$ceq
Smalltalk L[20m(6?
Transcript show: 'Hello, world!' o`q_wdy?
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K
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SNOBOL &2=dNREJ}1
OUTPUT = "Hello, world!" O=dJi9;`#_
END f}@jFhr'<
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zKsz*xv6b
SQL @bnG:np
create table MESSAGE (TEXT char(15)); 8-Hsgf.*
insert into MESSAGE (TEXT) values ('Hello, world!'); C$@yG)Pj
select TEXT from MESSAGE; }oKG}wgY
drop table MESSAGE; DmBS0NyR7Y
~35U]s@v
Xe^Cn
R
Tcl n9\]S7]52
#!/usr/local/bin/tcl UD)e:G[Gat
puts "Hello, world!" >N?2""
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f7 'q-
TScript d)"?mD:m/M
? "Hello, world!" W(Uu@^
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f5GdZ_
Turing )
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put "Hello, world!" 1 `7<2w
S#-tOjU*
JMS(9>+TA
UNIX-style shell 3tmdi 3s
程序中的/bin/sh可改为您使用的shell wHem5E
/^ " 83?_
#!/bin/sh nWvuaQ0}
echo 'Hello, world!' N|Sf=q?Ko
ne>g?"Pex{
7'-j%!#w
GUI Jy
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Delphi wO>L#"X^v
program HelloWorld; Ol')7d&
uses 0iZGPe~
Dialogs; "z*:'8;E
begin QQpP#F|w
ShowMessage('Hello, World!'); Y=
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end. yt+}K)Hz
=5sF"L;b
9 F^;!
Nuva sIl33kmv
<. -[Qvg49jy
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) ZCg`z
.> 3},Zlu
I=Oy-
e2C<PGUUB
Visual Basic a?R[J==
MsgBox "Hello, world!" K{l5m{:%
'或者 ;p ]y)3
Print "Hello, world!" >bUj*#<
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R1-k3;v^
Visual FoxPro &l