“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》。 5T sU Qc
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以下是用不同语言写成的Hello World程序的几个例子: *6HTV0jv
Ada COH<Tj
with Ada.Text_Io; use Ada.Text_Io; J>fQNW!{
procedure Hello is mF` B#
begin UOQEk22
Put_Line ("Hello, world!"); c/c$D;T
end Hello; <: &*
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汇编语言 /Mb"V5S(W
%%(R@kh9
x86 CPU,DOS,TASM G\|,5HED
MODEL SMALL s4&^D<
IDEAL zD?oXs
STACK 100H rG,5[/l
LYlDc;<A
DATASEG UK9@oCIB
HW DB 'Hello, world!$' \fr-<5w7 9
^C2\`jLMY
CODESEG gV&z2S~"
MOV AX, @data +`?Y?L^
J
MOV DS, AX Y*mbjyt[?X
MOV DX, OFFSET HW pr%nbl
MOV AH, 09H \u6^Varw
INT 21H /}-CvSR
MOV AX, 4C00H ^vG8#A}]
INT 21H gZ5[
C
END >0Q|nCx
~]ZpA-*@Ut
N !TW!
x86 CPU,GNU/Linux,NASM MZmb`%BZ
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). d)~Fmi;
;Enter this into "hello.asm" then type: qI^
/"k*5
;"nasm -f elf hello.asm" n3J53| %v
;"ld hello.o -o hello" C6rg<tCH
;"./hello" NcY608C
}9nDo*A"}
section .data ;data section declaration 9"g6C<
msg db 'Hello World!',0AH 1q;#VS/D;H
len equ $-msg ;string length iNMx"F0r
2NB L}x
section .text ;code section declaration qJ0fQI\
global _start ;entry point (start of execution) )BRKZQN
_start: mov edx,len ;string length eh"3NRrN
mov ecx,msg ;string start |_uaS
mov ebx,1 ;file handle: stdout \U@rg4
mov eax,4 ;sys_write ?-1r$31p
int 80h ;kernel system call &=4(l|wcg
DBLO|&2!z[
mov ebx,0 ;return value JEE{QjTh
mov eax,1 ;sys_exit fGmT_C0t
int 80h ;kernel system call SNY~9:;]f
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x86 CPU,Windows,MASM32 P./VmY'
.386 {3&|tk!*
.model flat,stdcall QBR=0(giF
option casemap:none Rb\6;i8R
;Include 文件定义 WJ*n29^N^h
include windows.inc 5xii(\lC
include user32.inc D %JlbH8
includelib user32.lib ?McQr1
include kernel32.inc PTj&3`v
includelib kernel32.lib N/GQt\tV<
;数据段 41fJ%f`
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.data {[+2n]f_G
szCaption db 'A MessageBox!',0 Q
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szText db 'Hello,world!',0 ,m,)I
;代码段 q 4V7
.code vf8\i-U=
start: _'#x^D
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Y@ZaJ@%9@
invoke ExitProcess,NULL xU%w=0z<
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> E= `6-H{
end start 1T:Y 0
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AWK 8uA,iYD
BEGIN { print "Hello, world!" } ]THPSw_y8
=|=.>?t6Z0
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BASIC t='# |');
传统版BASIC(例如GWBASIC): ;[a|9TPR
r7Ya\0gU
10 PRINT "Hello, world!" GtwT
20 END NH0qVQ@A
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或在提示符输入: JsotOic%
/EG~sRvl}
?"Hello, world!":END 3QpYmX<E
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现代版BASIC(例如Quick BASIC): DLCkM*'
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Print "Hello, world!" {aM<{_v
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以下的语句在Quick BASIC中同样有效: _!|/
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? "Hello,world!" Pzb|t+"$
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p6vKoI#T
BCPL /y>>JxAEb
GET "LIBHDR" pAk/Qxl3eo
[xKd7"d/n
LET START () BE x|{IwA9
$( G}9=)
WRITES ("Hello, world!*N") #]'rz,E<
$) san,|yrMn
r#6_]ep}<'
w;l<[q?_
Befunge Q3"}Hl2
"!dlrow olleH">v CA +uKM^"6
, %8~3M75$
^_@ Q~Z=(rP20
Vrvic4
5[Pr|AY
Brainfuck l{D'uI[&
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< M2U&?V C!
+++++++++++++++.>.+++.------.--------.>+.>. rLX4jT^
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#include <stdio.h> M5x U9]B
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int main(void) mJM_2Ab
{ B7z -7&TE
printf("Hello, world!\n"); ^H6<Km
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return 0; V=1Bo~
} hxS 6:5Uc
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~gu3g^<0v
C++ TB;o~>9U
#include <iostream> 0VK-g}"x
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int main() uWrQ&}@
{ XbQlHfrS
std::cout << "Hello, world!" << std::endl; FW.$5*f='
return 0; EJ`T$JD
} \Y}3cE
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C++/CLI -Qn=|2Mm?
int main() )P|[r
{ ti &J
System::Console::WriteLine("Hello, world!"); 8?FbtBAn
} HQ{JwW!m
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C# (C Sharp) xB !6_VlB
class HelloWorldApp wK}\_2?
{ UswZG^Wh
public static void Main() Zec <m8~
{ 6b!F 1
System.Console.WriteLine("Hello, world!"); OnWx#84
} w4LScvBg
} 'L{8@gqi
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COBOL 7w1wr)qSB
IDENTIFICATION DIVISION. nW|wY.
PROGRAM-ID. HELLO-WORLD. boo
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{$ep7;'d
ENVIRONMENT DIVISION. gqWupL
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DATA DIVISION. dZ _zg<
FCkf#
PROCEDURE DIVISION. Y-0?a?q2Fr
DISPLAY "Hello, world!". g&n )fF
STOP RUN. t&9A
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nbG/c80
Common Lisp @X3{x\i'I
(format t "Hello world!~%") D13Rx 6b
rcGb[=B f
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DOS批处理 .]
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@echo off @JW@-9/
echo "Hello, world!" 4ikd M/
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?3O9eZY@
Eiffel eznypY=
class HELLO_WORLD 2<hpK!R
h!m_PgRSs
creation X=C1/4wU
make &[&r2>a
feature 0 u?{\
make is vF?5].T
local [ 4;Ii
io:BASIC_IO qp}Ma8+
do '<0J@^vZ
!!io I=;+n-
io.put_string("%N Hello, world!") lHZU iB
end -- make ^GBe)~MT
end -- class HELLO_WORLD nhN);R~o"1
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S1U@UC
Erlang zm,@]!wI
-module(hello). "k Te2iS
-export([hello_world/0]). D3c2^r$Z
2r%lA\,h$
hello_world() -> io:fwrite("Hello, World!\n"). ;sch>2&ZWU
ejA%%5q
cVwbg[W]
Forth Ys!>+nL|
." Hello, world!" CR vS;1/->WD
F}
d
QORN9SY
Fortran r_YIpnJ
WRITE(*,10) S!{t6'8K
10 FORMAT('Hello, World!') 8?Z4-6!{V,
STOP +w8R!jdA
END rDdzxrKg{
)NR Q2
BA=,7 y&;j
HTML R<x'l=,D(
<HTML> e:AHVepj{
<HEAD> {s3z"OV
<TITLE> Hello World! </TITLE> 8UkKU_Uso
</HEAD> 0R0{t=VJZ
<BODY> LB/C-n.`
<p>Hello World!</p> wZh:F
!
</BODY> Bb{!Yh].:A
</HTML> GTv#nnC
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HQ9+ -VZRujl
H .q][? mW3
Eq:2k)BE
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INTERCAL 7a=S
PLEASE DO ,1 <- #13 4Z*U}w)
DO ,1 SUB #1 <- #238 OUP?p@%]<
DO ,1 SUB #2 <- #112 ,^8 MB.
DO ,1 SUB #3 <- #112 NU(AEfF
DO ,1 SUB #4 <- #0 _W3Y\cs,-
DO ,1 SUB #5 <- #64 $W;b{H=F
DO ,1 SUB #6 <- #238 _owjTo}
DO ,1 SUB #7 <- #26 ]B=C|usJ
DO ,1 SUB #8 <- #248 1p'Le!
DO ,1 SUB #9 <- #168 PIXL6
DO ,1 SUB #10 <- #24 {RB-lfrWs
DO ,1 SUB #11 <- #16 B cj/y4"
DO ,1 SUB #12 <- #158 pG"5!42M!
DO ,1 SUB #13 <- #52 1|8<H~&
PLEASE READ OUT ,1 vKoP|z=m
PLEASE GIVE UP S-#q~X!yJ
79=45' 8
/#<pVgN
Java dC}`IR
public class Hello US{3pkr;I]
{ +%\oO/4Fs
public static void main(String[] args) @/UfDye
{ [\R>Xcu>
System.out.println("Hello, world!"); vVT?h
} 6Fy@s
} Y\v-,xPm
[Vdz^_@Y
wve=.n
JSP m+itno
<% #0;HOeIiH
out.print("Hello, world!"); j8 C8X$
%> n-QJ;37\
0|D&"/.R#!
$j)hNWI
MIXAL 2AVc?
9@
TERM EQU 19 the MIX console device number 0@Kkl$O>mb
ORIG 1000 start address 8dK0o>|}
START OUT MSG(TERM) output data at address MSG %i)B*9k
HLT halt execution 4e9q`~sO
MSG ALF "MIXAL" YwH./)r=
ALF " HELL" <Q<+4Y{R
ALF "O WOR" 3z;_KmM
ALF "LD " 7+w'Y<mJ
END START end of the program )
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Nuva !MQN H
<..直接输出..> (
#&|Dp^'
Hello, world! T}7uew\v0<
j[6Raf/(n
<..或者..> )gR=<oa
1px\K8
<. nws"RcP+Z
// 不带换行 bXM/2Z?6
? "Hello, world!" }jF+`!*!
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// 或者 -Cid3~mX3
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// 带换行 ep(g`e
?? 'Hello, world!' U\+&cob.
.> 5+X_4lEJK(
!.fw,!}hOD
`"k9wC1
OCaml 6@4n'w{"
let main () = `#IcxweA
print_endline "Hello world!";; i[semo\E
/-0'
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I_ "Z:v{
Pascal UBO^EVJ
program Hello; U/qE4u1J6M
begin 2Ohp]G
writeln('Hello, world!'); kpob b
end. &~5=K
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'PdmI<eXQ
Perl '~-IV0v9
#!/usr/local/bin/perl h[XGC=%
print "Hello, world!\n"; 6xgv:,
BQ05`nkF
^&c$[~W
PHP hv)7H)|l~]
<?php kReG:
print("Hello, world!"); nq`q[KV:
?> bdc\
: cp
[~Hg}-c
Pike i~qfGl p6)
#!/usr/local/bin/pike .6T6 S
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int main() "EftN5?/
{ qg,Nb
write("Hello, world!\n"); zXc}W*ymj
return 0; `hB1b["(
} k ~6-cx
rPq<Xb\
#w3ru6*W
PL/I {w`:KR6o7
Test: procedure options(main); [ug,jEH"S
declare My_String char(20) varying initialize('Hello, world!'); nJ3vi}`
put skip list(My_String); \k&1*b?h
end Test; a5`eyL[f
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;MTz]c
Prolog I>w^2(y
goal zJ& b|L
write("hello,world!"). >mIg@knE
DacJ,in_I{
W$\X ~Q'0
Python jv}=&d
#!/usr/local/bin/python !jh%}JJ
print "Hello, world!" u39FN?<^
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?=|kC*$/G
REXX F>Y9o-o2
say "Hello, world!" ?J|4l[x
'm1. X-$V
+ Oobb-v
Ruby QXk"?yT`E
#!/usr/bin/ruby u2qV 6/
print "Hello, world!\n" P%o44|[][
c"Y!$'|Q
U|fTb0fB
Scheme z<a2cQ?XQ
(display "Hello, world!")
EZ% .M*?
(newline) g_D-(J`IK,
s'2Rs^,hN
A_r<QYq0|
sed (需要至少一行输入) StM/
sed -ne '1s/.*/Hello, world!/p' jL4>A$
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P%GkcV
Smalltalk Xm[Czd]%
Transcript show: 'Hello, world!' $U'3MEEw
R+.
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{fG|_+tl3o
SNOBOL -Z?Ck!00
OUTPUT = "Hello, world!" ~ v1W
END `Wf5
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)}|mDN&P
SQL Hcl"T1N*
create table MESSAGE (TEXT char(15)); 1~qm+nET\
insert into MESSAGE (TEXT) values ('Hello, world!'); d/B*
select TEXT from MESSAGE; BRtXf0~&p
drop table MESSAGE; *h,3}\
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me'(lQ6^
Tcl w#{l4{X|
#!/usr/local/bin/tcl G)+Ff5e0L[
puts "Hello, world!" 6D*chvNA;
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i]M"Cu*
TScript EX 9Z{xX
? "Hello, world!" W'G{K\(/
?Y!U*& 7
2}`R"MeS
Turing }1rvM4{/+f
put "Hello, world!" i/:5jI|
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@W [{2d
UNIX-style shell i_YW;x
程序中的/bin/sh可改为您使用的shell 97x%2.\:
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#!/bin/sh s-5wbi.C
echo 'Hello, world!' RO(iHR3cA
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z_)`g`($
GUI Sf5]=F-w
Hd*Fc=>"Y
Delphi QE6El'S
program HelloWorld; |B|@GF?:
uses pU DO7Q]
Dialogs; 3B"7VBK{
begin u[mY!(>nQ
ShowMessage('Hello, World!'); Gy^FrF
end. g =x"cs/[
z"av|(?d
d
qpgf@
Nuva =jG?v'X
<. w7ZG oh(
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) r:#Q9EA
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