“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。 !sUo+Y
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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》。 K4y4!zz
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以下是用不同语言写成的Hello World程序的几个例子: =T!M`
Ada S?;&vs9j
with Ada.Text_Io; use Ada.Text_Io; 9^ )=N=wV
procedure Hello is #p0vrQ;5f
begin I:[3x2H
Put_Line ("Hello, world!"); {G_ZEo#x8,
end Hello; "`16-g97
]>&au8
Rs7=v2>I
汇编语言 &d=j_9
YMC*<wXN
x86 CPU,DOS,TASM |]^OX$d
MODEL SMALL 4h?[NOA"
IDEAL MH1??vW
STACK 100H EZao\,t
.#P'NF(5#
DATASEG *uNa(yd
HW DB 'Hello, world!$' S$ dFz
Q!MS_
#O
CODESEG YS%HZFY, "
MOV AX, @data _r&`[@m
MOV DS, AX v 6Tz7
MOV DX, OFFSET HW !\2Xr{f
MOV AH, 09H tyNT1F{
INT 21H ~`(#sjr6KR
MOV AX, 4C00H ,SH))%Cyt
INT 21H c:M~!CXO
END cV=h8F
(m25ZhW
~[t%g9
x86 CPU,GNU/Linux,NASM 2{% U\^-
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). WL+I)n8~
;Enter this into "hello.asm" then type: NO8)XJ3s
;"nasm -f elf hello.asm" _5y3<H<?
;"ld hello.o -o hello" U)o(}:5xF
;"./hello" *#w+*ywVZH
C8%q?.nH=
section .data ;data section declaration Ak^g#^c*
msg db 'Hello World!',0AH b+9M? k"
len equ $-msg ;string length ;i@,TU
+\2{{~_z
section .text ;code section declaration N\BB8<F
global _start ;entry point (start of execution) ?V3e;n
_start: mov edx,len ;string length ]^$3S
mov ecx,msg ;string start 3a_~18W
mov ebx,1 ;file handle: stdout ZG"_M@S.
mov eax,4 ;sys_write Z~CL|=
int 80h ;kernel system call s,)Z8H
9s7sn*aB#5
mov ebx,0 ;return value *shE-w;C
mov eax,1 ;sys_exit s sUWr=mD
int 80h ;kernel system call -J[*fv@
)OS^tG[=
4[v
%]g`
x86 CPU,Windows,MASM32 >/9f>d?w^
.386 !8(:G6Ne
.model flat,stdcall 9{]U6A*K0w
option casemap:none vlY83mU.
;Include 文件定义 bk44qL;8
include windows.inc JmjqA Dex
include user32.inc Ko|nF-r_
includelib user32.lib K!;Z#$iw[
include kernel32.inc UOC>H%r~M?
includelib kernel32.lib [W;iR_7T5
;数据段 tN&4t
xB
.data W_8N?coM
szCaption db 'A MessageBox!',0 DD{-xCCR
szText db 'Hello,world!',0 #?DwOUw
;代码段 .zZee,kM
.code 9`4M o+
start: U@T"teGBA
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK L3/m}AH,
invoke ExitProcess,NULL V{+'(<SV
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pyJY]"UHVE
end start E<]O,z;F
Wa7-N4
DybuLB$f
AWK )7j jfD\
BEGIN { print "Hello, world!" } #q#C_"
Au~l
O
H]As2$[
BASIC 8w/$!9[
传统版BASIC(例如GWBASIC): W;!OxOWZJ
wrI66R}@
10 PRINT "Hello, world!" uj;tmK>;
20 END cBZ$$$v\#
j1D 1tn
或在提示符输入: @K.{o'
EIQ`?8KSR
?"Hello, world!":END ^,O%E;g^#
+?y ', Ir
现代版BASIC(例如Quick BASIC): = Lt)15
bl yU53g
Print "Hello, world!" 0P i+ (X
[}:;B$,
以下的语句在Quick BASIC中同样有效: Sy()r 6n
v,]-;V~<
? "Hello,world!" i[L5,%5<H
?TTtGbvU
m#w1?y)Z@X
BCPL b?i5C4=K
GET "LIBHDR" U1nObA
C)Ep}eHjf_
LET START () BE %x{jmZ$}
$( o_ng{SL
WRITES ("Hello, world!*N") F/p/&9
$) -@bOFClE
-4wr)zjfW
s R/z)U_
Befunge V9`?s0nn^
"!dlrow olleH">v Pa)'xfQ$Y6
, AwnQ5-IR\
^_@ Ck1{\=t
%[S-"k
[h&)h+xt
Brainfuck R|D%1@i]
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< {0L.,T~g+[
+++++++++++++++.>.+++.------.--------.>+.>. (E(J}r~E
BN7]u5\7
Wdk]>w
'L
C UA4="/
#include <stdio.h> Z-%zR'-?*
rF ?gKk
int main(void) pYN.tD FO
{ h4ozwVA
printf("Hello, world!\n"); Q&5s,)w-
return 0; kF]sy8u]
} G]v BI=
UpTVLx^c
mY=Q#nG
C++ c,j[ix
#include <iostream> '8w}m8{y
CKE):kHu
int main() PPAcEXsIu
{ Z1}@N/>>
std::cout << "Hello, world!" << std::endl; iWGn4p'
return 0; G22{',#r8
} {"PIS&]tR
3s\}|LqX#
;SgPF:T>Q
C++/CLI i2P:I A|@
int main() TI/5'Oke$
{ ~Z`Cu~7
System::Console::WriteLine("Hello, world!"); '[Zgwz;z
} I3qTSX-
x$hT+z6DUC
'vwu^u?
C# (C Sharp) Y6 <.]H
class HelloWorldApp j
D kBe-`
{ 6%^A6U
public static void Main() kk>z,A4
h_
{ *$]50 \W
System.Console.WriteLine("Hello, world!"); 2WK c;?
} +R8G*2
} oNhCa>)/
^>/~MCyM.
XjXz#0nR
COBOL b|-}?@&7&q
IDENTIFICATION DIVISION. i&TWIl8
PROGRAM-ID. HELLO-WORLD. cY^'Cj
b($9gre>mI
ENVIRONMENT DIVISION. (nu;o!mo9
4iDqd
DATA DIVISION. XEBeoOX/
dI+Y1Vq
PROCEDURE DIVISION. _]v@Dq VP
DISPLAY "Hello, world!". @+{F\SD\
STOP RUN. oTJ^WePZQ
"c.@4#/_
s^> >]
Common Lisp &g"`J`
(format t "Hello world!~%") kBU`Q{.
S2jn pf}
Q7#t#XM
DOS批处理 dsU'UG7L
@echo off o<gK"P
echo "Hello, world!" fHODS9HQ
+ )n}n5
"+M0lGTB
Eiffel oFb~|>d
class HELLO_WORLD .~C%:bDnX7
EK&";(x2(
creation <Nk:C1Op}
make 3#?53s
feature <0!<T+JQ
make is ;i?rd f
local G<-<>)zO!
io:BASIC_IO Hqtv`3g
do )(9[> _+40
!!io Ft^X[5G4L
io.put_string("%N Hello, world!") 3bRW]mP8
end -- make fg7
end -- class HELLO_WORLD 7|xu)zYB
WMa`!Q
Y P,>vzW
Erlang 6e S~*
-module(hello). LJ6L#es2
-export([hello_world/0]). j}O qWX>/
]N2!
'c
hello_world() -> io:fwrite("Hello, World!\n"). D*>#]0X
QHxof7
yl&s!I
Forth 0|<9eD\I=
." Hello, world!" CR vb|
d
b<%c ]z
Wecxx^vtv6
Fortran S5kD|kJ
WRITE(*,10) lMl'+ yy
10 FORMAT('Hello, World!') zGdYk-H3TH
STOP /'/i?9:
END t3AmXx
nu)YN1
*
5 B t~tt
HTML $<9u:.9xf
<HTML> AhkDLm+
<HEAD> yD Jy'Z_F{
<TITLE> Hello World! </TITLE> Gr>CdB>~+
</HEAD> S['cX ~
<BODY> ol K+|nR
<p>Hello World!</p> +|x{?%.O
</BODY> G`;\"9t5h
</HTML> m[z$y
c39j|/!;Y
B<ncOe
HQ9+ :`4F0
H a`8]TD
&Yo|Pj
FJ^\K+;
INTERCAL yh/JHo;
PLEASE DO ,1 <- #13 UM`{V5NG#
DO ,1 SUB #1 <- #238 *$5p,m6G
DO ,1 SUB #2 <- #112 /+*N.D'`t,
DO ,1 SUB #3 <- #112 r\cY R}v
DO ,1 SUB #4 <- #0 9Z }<H/q
DO ,1 SUB #5 <- #64 t(dVd%
DO ,1 SUB #6 <- #238 /OYa1,
DO ,1 SUB #7 <- #26 6$0<&')Yb
DO ,1 SUB #8 <- #248 ExQ\qp3
DO ,1 SUB #9 <- #168 tJ7F.}\;C
DO ,1 SUB #10 <- #24 #.!#"8{0_
DO ,1 SUB #11 <- #16 UCXRF
DO ,1 SUB #12 <- #158 xHqF_10S#
DO ,1 SUB #13 <- #52 fs:yx'mxV
PLEASE READ OUT ,1 ?pcbso
PLEASE GIVE UP hs5>Gx
j0j!oj)7I
[?hvx}
Java [Y~~C J
public class Hello rB{w4
{ &4+|{Zx0
public static void main(String[] args) 0b/@QgJ
{ {bADMj1
System.out.println("Hello, world!"); }n
"5r(*^@
} )t@9!V
} alB'l
q7<d|s
OR*JWW[]
JSP C/QmtT~`e
<% t|V<K^
out.print("Hello, world!"); Bz <I7h
%> nF_q{e7
AorY#oq
k s\q^ten
MIXAL _5H~1G%q
TERM EQU 19 the MIX console device number (~%NRH<\
ORIG 1000 start address [u$|/
START OUT MSG(TERM) output data at address MSG tjwnFqI
HLT halt execution D(;+my2
MSG ALF "MIXAL" 6^t#sEff]
ALF " HELL" 6%h%h: e
ALF "O WOR" Ov<c1y;f
ALF "LD " 'l=>H#}<B
END START end of the program $8i`h}AM
Z'>UR.g
;HH%OfQq
Nuva G<=I\T'g;
<..直接输出..> Y<u%J#'[
Hello, world! /Jc{aw
dq@
*8ui
<..或者..> qHp2;
1
z~|SmP1
<. Zs{7km
// 不带换行 6dmb
bgO)
? "Hello, world!" b_ak@LYiu
UWEegFq*
// 或者 U65l o[
:IBP "
// 带换行 \O4s0*gw
?? 'Hello, world!' ]hS<"=oj
.> Z$g'h1,zW
/&Cq-W
_B#x{ii
OCaml jrFPd
let main () = B1J,4
print_endline "Hello world!";; yf0v,]v[
u6F>o+Td)
as]M%|/-I
Pascal Im\ ~x~{
program Hello; BO4;S/ O
begin `,xO~_
e>
writeln('Hello, world!'); 'G~i;o 2
end. K}cA%Y
g-wE(L
,*U-o}{8C?
Perl 717THci3Y
#!/usr/local/bin/perl Wz=&
0>Mm_
print "Hello, world!\n"; E"_{S.Wc
1HKA`]D"p
O|+ZEBP
PHP :e=7=|@7
<?php =oIt.`rf
print("Hello, world!"); ?g{[U0)
?> \XmplG:
k kAg17 ^
>n3GvZ5%
Pike fo+s+Q|Y
#!/usr/local/bin/pike LwRzzgt
int main() ]T'8O`
{ "i(f+N,)
write("Hello, world!\n"); c:Cw#
return 0; 'DVn /3?X
} MymsDdQ]
XJPIAN~l
& ;.rPU
PL/I lY"l6.c
Test: procedure options(main); 5I2 h(Td
declare My_String char(20) varying initialize('Hello, world!'); '%t$mf!nV
put skip list(My_String); %;ED}X
end Test; HBR/" m
gEsD7]o(=
8)eRm{
Prolog U ->vk{v
goal APF`b
write("hello,world!"). 6]%=q)oL[
P8ej9ULX,
@}H'2V
Python +58^{_k+%
#!/usr/local/bin/python .<>t2,Af
print "Hello, world!" ;"Qq/knVL
MbCz*oW
'l<$H=ZUVG
REXX ]S s63Vd
say "Hello, world!" g2TK(S|#
r3U7`P
Jj[3rt?8
Ruby Mn/
#!/usr/bin/ruby ! PGCoI
print "Hello, world!\n" {'A
15
JUA%l
M !"Q7>d
Scheme [dP<A?s
(display "Hello, world!") ]Xnar:5
(newline) ;kZD>G8
8A]8yX =
0'r}]Mws
sed (需要至少一行输入) >S`=~4
sed -ne '1s/.*/Hello, world!/p' @w= =*.x
*(q{k%/M
5OGwOZAj52
Smalltalk fgtwVji
Transcript show: 'Hello, world!' !gRU;ZQU_
@q<h.#9
!gLJBp
SNOBOL CPNV\qCY
OUTPUT = "Hello, world!" T+P{,,a/]
END k7*-v/*S
A@lM=
jWxa
[>
SQL 7mi*#X}
create table MESSAGE (TEXT char(15)); }])j>E
insert into MESSAGE (TEXT) values ('Hello, world!'); [7`S`\_NK
select TEXT from MESSAGE; UV;I6]$}A7
drop table MESSAGE; l2Py2ZI-b
9m>L\&\_e
Th%w-19,8
Tcl g=4P-i3
#!/usr/local/bin/tcl TTj] _R{n
puts "Hello, world!" Q_,!(N
L!33`xef'
8cY5:plK
TScript K[noW
? "Hello, world!" K6B6@
s!YX<V
7SkW!5
Turing ,:}VbQ:3I
put "Hello, world!" 79)iv+nf\l
%`G}/"
mL}Wan
UNIX-style shell Iu~(SKr=|$
程序中的/bin/sh可改为您使用的shell >/C,1}p[
/P3Pv"r|8]
#!/bin/sh :k.>H.8+~
echo 'Hello, world!' JK^%V\m
DPnrzV)
0[ n;ZL~
GUI *yI( (G/
DP*V|)
Delphi Sb?v5
program HelloWorld; K~UT@,CS60
uses ?j!/Hc/b4
Dialogs; !JDyv\i}
begin I
%1P:-
ShowMessage('Hello, World!'); CD?b.Cxai
end. 6S%KUFB+e
:5^5l
H9VdoxKo
Nuva ?5d[BV
<. A#~CZQY^$
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) S,+|A)\#
.> * e,8o2C$
M#],#o*G
9J49s1
Visual Basic u`+kH8#
MsgBox "Hello, world!" /6N!$*8
'或者 R<h:>.M
Print "Hello, world!" "wV7PSbM
W7V#G(cpU
sDHFZ:W
Visual FoxPro `kOp9(Q{
? "Hello, world!" i}:^<jDv?
,+n{xI2
5iItgVTW
X11 = p2AK\
用一个程序 C0e oV}
M|z4Dy
xmessage 'Hello, world!' .0y .0=l
Y5IQhV.
用C++和gtkmm 2 a!x?Apww
<