“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。 $R1I(sJ
yi>AogQ,
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》。 ;ryNfP%
!NkCki"W
以下是用不同语言写成的Hello World程序的几个例子: O6R)>Y4
Ada |f#hGk6
with Ada.Text_Io; use Ada.Text_Io; pX?3inQP%(
procedure Hello is }|Mwv
$`
begin *_o(~5w-K
Put_Line ("Hello, world!"); .t5.(0Xk[A
end Hello; ;54NQB3L
e12QYoh
,_I
rE
汇编语言 I/MY4?(T
_wS=*-fT
x86 CPU,DOS,TASM (^m]
7l
MODEL SMALL 0f.jW O
IDEAL <ak[`]
STACK 100H q!eE~O;A
aQtd6L+ J
DATASEG @wI>0B
HW DB 'Hello, world!$' ExS5RV@v'
VTM* 1uXS>
CODESEG JhFbze>
MOV AX, @data 1x:W 3.
MOV DS, AX \}s/<Q
MOV DX, OFFSET HW !i^"3!.l,]
MOV AH, 09H 2Lf,~EV
INT 21H pOc2V
MOV AX, 4C00H 5mD8$%\8
INT 21H 7"!b5(4=
END 'bi;Y1:
dm4Q'u
` 3qf}=Z`
x86 CPU,GNU/Linux,NASM <m]0!ii
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). d-D,Gx]>$
;Enter this into "hello.asm" then type: yx :^*/
;"nasm -f elf hello.asm" G`Nw]_
Z_
;"ld hello.o -o hello" m9DFnk<D
;"./hello" }kqh[`:
3ic /xy;}
section .data ;data section declaration >8e)V
;
msg db 'Hello World!',0AH Mw/9DrE7/
len equ $-msg ;string length `$B?TNuch7
~oa}gJl:}-
section .text ;code section declaration =9GALoGL
global _start ;entry point (start of execution) Q&eyqk
_start: mov edx,len ;string length o utJ/~9;
mov ecx,msg ;string start ?,>3uD#
mov ebx,1 ;file handle: stdout $3^M-w
mov eax,4 ;sys_write YsVmU
int 80h ;kernel system call ](w)e
p~;3
XB7Aa)
mov ebx,0 ;return value lFnls6dp
mov eax,1 ;sys_exit L,[Q/$S8
int 80h ;kernel system call ny5P*yWEh
[iub}e0
5H0qMt P
x86 CPU,Windows,MASM32 @:C)^f"
.386 :>0ywg
.model flat,stdcall pAE
(i7
option casemap:none yV(#z2|
;Include 文件定义 ws'e
include windows.inc SK}sf9gTv
include user32.inc tOiz tYu
includelib user32.lib u7L?9
include kernel32.inc dLiiJ6pl*
includelib kernel32.lib tYu<(Z(l)
;数据段 'x*C#mt
.data bY" zK',m
szCaption db 'A MessageBox!',0 $oBs%.Jp
szText db 'Hello,world!',0 >Ku4Il+36
;代码段 :?6HG_9X
.code ~)U50.CH
start: &Hb%Q! ^Kb
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK "lh4Vg\7n
invoke ExitProcess,NULL
J=`
8
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |g&V? lI
end start Lv%3 jj
{N4 'g_
4z0gyCAC A
AWK .l1x~(
BEGIN { print "Hello, world!" } ?+t;\
ys9:";X;}
>dl5^
BASIC 4YfM.~
6
传统版BASIC(例如GWBASIC): T+Z[&|
J4T"O<i$58
10 PRINT "Hello, world!" >3!~U.AA'x
20 END o[ZjXLJzV
_J1\c~ke"
或在提示符输入: zm&[K53
2{79,Js0
?"Hello, world!":END lVvcrU
os/h~,=
现代版BASIC(例如Quick BASIC): fsL9d}
@+b$43^
Print "Hello, world!" f24W*#IX
q/EX`%U
以下的语句在Quick BASIC中同样有效: *9\j1Nd
?b]zsku8
? "Hello,world!" LCorT-
<_YdN)x
6$urrSQ`N0
BCPL nwFBuP<LR
GET "LIBHDR" 7{m>W!
D6bYg `
LET START () BE Jt8;ddz
$( W.j^L;
WRITES ("Hello, world!*N") UIAazDyC
$) OJ&'Z}LB
qO>UN[Y
+#Pb@^6"m
Befunge Y_%:%J
"!dlrow olleH">v ,Cr%2Wg-
, $g>bp<9v4
^_@ ",/6bs#$
w/#7G\U
o +$v0vg%T
Brainfuck Lf9hOMHx
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< PPXwmR
+++++++++++++++.>.+++.------.--------.>+.>. \IL)~5d
_lv{ 8vf1B
A%D'Z85
-
C al[^pPKZ
#include <stdio.h> H:DR?'yW
IWo'{pk
int main(void) 0|AgmW_7
.
{ 9lq5\ tL-
printf("Hello, world!\n"); 9k6s
return 0; 0nt@}\j
} |ke0G
V(`]hH0;T
X_78;T)uA
C++ yY#h1
#include <iostream> i9ySD
:?xH)J,imk
int main() $@Vn+|
Ix
{ f/Y&)#g>k
std::cout << "Hello, world!" << std::endl; GN_L"|#)=
return 0; @r GY9%E
} m7k }k)
a"@f< wU~
F~Dof({:
C++/CLI X.<3/
int main()
Ek<Qz5)
{ }.g5zy
System::Console::WriteLine("Hello, world!"); ?|ZbQz(bL
} s*rR>D:
rO#w(]
Mxl;Im]!`.
C# (C Sharp) /l<(i+0
class HelloWorldApp 6xDk3
{ bUcp8
public static void Main() 1{N+B#*<[X
{ |3~m8v2-
System.Console.WriteLine("Hello, world!"); ]njNSn
} ^}P94( oz
} gY7sf1\wX
!yv>e7g^
,yC..aI
COBOL @XJ7ff&
IDENTIFICATION DIVISION. W.^zN' a
PROGRAM-ID. HELLO-WORLD. +c%jOl
3zB'AG3b
ENVIRONMENT DIVISION. ?pZ"7kkD
''auu4vF
DATA DIVISION. tMw65Xei6b
8-@@QZ\N
PROCEDURE DIVISION. tU?BR<q
DISPLAY "Hello, world!". vb[0H{TT2
STOP RUN. v]M:HzP
V.{HMeE4
M d4Q.8
Common Lisp Z5xQ
-T`
(format t "Hello world!~%") P%:?"t+J`;
<r,5F:
ow'G&<0b
DOS批处理 81EEYf
@echo off 8=$X hC
echo "Hello, world!" |mKohV qr
85!]NF
Jk%5Fw0
Eiffel XQ=% a5w
class HELLO_WORLD 4^r6RS@z
I\TSVJk^Xi
creation Ug+ K:YUq
make oaQW~R`_
feature F'|K>!H
make is F^/KD<cgK
local ogIu\kiZ
io:BASIC_IO by+xK~>
do *f 7rLM*
!!io 5Xr})%L
io.put_string("%N Hello, world!") 6/ 5c|
end -- make nl}LT/N
end -- class HELLO_WORLD |yz[mP*;o
FaCW +9B
07Yak<+~
Erlang w)|9iL8
-module(hello). pfZ[YC-
-export([hello_world/0]). FdE?uw
hrnE5=iY
hello_world() -> io:fwrite("Hello, World!\n"). &Y^4>y%
PESvx>:
Je|:\Qk
Forth |Ogh-<|<
." Hello, world!" CR x%s1)\^A
.tKBmq0xo"
Xps
\+l%i
Fortran YZ<zlU
WRITE(*,10) qeFaY74S
10 FORMAT('Hello, World!') mn03KF=n]
STOP M@KQOAzt
END s<LnUF1b
i#4+l$q
5wW5
n5YS
HTML cBqbbZyUk
<HTML> 3|!3R'g/ >
<HEAD> }J6:D]Q
<TITLE> Hello World! </TITLE> ZxSnqbyA*
</HEAD> mKu,7nMvF
<BODY> kSiyMDY-
<p>Hello World!</p> QuEX|h,F
</BODY> 7k,BE2]"
</HTML> 3#'8S_
KV0*dB;
=$OGHc
HQ9+ Fz#@ [1,
H nDnJ}`k
luP;P&
TcZ.5Oe6h#
INTERCAL >pu4 G+M
PLEASE DO ,1 <- #13 W.3b]zcV
DO ,1 SUB #1 <- #238 x-i1:W9;
DO ,1 SUB #2 <- #112 2^[dy>[y0
DO ,1 SUB #3 <- #112 tz;3
DO ,1 SUB #4 <- #0 ]I|(/+}M
DO ,1 SUB #5 <- #64 S]3CRJU3`
DO ,1 SUB #6 <- #238 ]bds~OY5 U
DO ,1 SUB #7 <- #26 l"ms:v
DO ,1 SUB #8 <- #248 (zsG!v
DO ,1 SUB #9 <- #168 J~%43!X\K
DO ,1 SUB #10 <- #24 m%0-3c(
DO ,1 SUB #11 <- #16 ;6/WjUDw<|
DO ,1 SUB #12 <- #158 m>=DJ{KQ
DO ,1 SUB #13 <- #52 SKC;@?
PLEASE READ OUT ,1 DS?.'"n[u
PLEASE GIVE UP Pn!~U] A$%
:#:|:q.]
MpOU>\
Java ,rMDGZm?
public class Hello <AU*lLZ
{ _ [k
\S|iY
public static void main(String[] args) z~Q=OPCnY
{ evZcoH3~
System.out.println("Hello, world!"); gqS9 {K(f
} 0+SDFh
} J>(X0@eWz
=~
Uhr6Q
tp`1S+'~j
JSP ??F* Z" x
<% u1meysa{0
out.print("Hello, world!"); VcKB:(:[
%> }{R*pmv$bN
NQ`D"n
]5'$EAsuW
MIXAL 8 m"k3:e^
TERM EQU 19 the MIX console device number 3(c-o0M
ORIG 1000 start address `,]Bs*~
START OUT MSG(TERM) output data at address MSG CH6 m
HLT halt execution ?xR7Ii3
MSG ALF "MIXAL" ^+x?@$rq
ALF " HELL" M
v6 ^('
ALF "O WOR" * zp tbZ
ALF "LD " d-b04Q7DQ
END START end of the program K/W=r
uHU@j(&c
s| p I`
Nuva sZrVANyqb
<..直接输出..> %jtUbBN
Hello, world! w0!$ow.l
BwT[SI<Sg
<..或者..> @HS*%N"*
@` KYgjjH
<. ,;,B7g
// 不带换行 krfXvQJwJ
? "Hello, world!" .D W>c}1
o-6d$c}{f
// 或者 v@zi?D K
BpIyw
// 带换行 ?Ek)" l
?? 'Hello, world!' M!,H0(@G
.> D|q~n)TW5
Z1 Nep!
u ON(LavB
OCaml r,;ca6>5H
let main () = wsmgkg
print_endline "Hello world!";; HAn{^8"@
-+"#G?g
LwB1~fF
Pascal mGE!,!s}
program Hello; !Ubm 586!
begin g, d_
writeln('Hello, world!'); 2iNLm6"
end. W{;Qi&^ca
(p2`ofj
:u4|6?
Perl @6UtnX'd
#!/usr/local/bin/perl a/ Ac^!(
print "Hello, world!\n"; k o@ej^
R&|.Lvmc/
MtJ-pa~n
PHP :{a< ~n`
<?php HTh?&u\QG
print("Hello, world!"); >W> rhxU
?> }r,M(Zr
uZ?P{E,K
vx9!KWy}
Pike ]nsjYsT
#!/usr/local/bin/pike D_lRYLA+
int main() dWd%>9}
{ ;g0s1nz
write("Hello, world!\n"); rMwa6ZO'm;
return 0; XmQ;Roe
} n=!T(Hk
4K^cj2X
== wX.y\.n
PL/I \dHqCQ
Test: procedure options(main); !R@LC
declare My_String char(20) varying initialize('Hello, world!'); 58Ibje
put skip list(My_String); ?"@Fq2xgB4
end Test; v*.R<-X:
)=f}vHg$
O?OAXPK2
Prolog 7$<pdayd
goal &m3-][!n
write("hello,world!"). eDpi0htm
htB7 j(
CtY-Gs
Python kQ>2W5o-d-
#!/usr/local/bin/python r6FTpOF
print "Hello, world!" Pk;w.)kT
CFFb>d
`ArUoYbB
REXX %*
0GEfl/
say "Hello, world!" qe.QF."y
F>\,`wP
-H%v6E%yh
Ruby a{ST4d'T
#!/usr/bin/ruby (}b~}X9
print "Hello, world!\n" g!^N#o
~IZ-:?+S^
+,spC`M6h
Scheme N1'"7eg/
(display "Hello, world!") ^ = C>
(newline) #czInXTTx
jzf~n~
Vq3 NjN!+5
sed (需要至少一行输入) <.)=CK
sed -ne '1s/.*/Hello, world!/p' c';~bYZ
d~8U1}dP
=>'8<"M5z
Smalltalk `sm Cfh}j6
Transcript show: 'Hello, world!' ]\yB,
I<QUvs%e
v:SHaUS
SNOBOL cx:_5GF
OUTPUT = "Hello, world!" [h-6;.e
END bkJ bnW=
.6gx|V+
k5< n:dS
SQL -o+t&m
create table MESSAGE (TEXT char(15)); P'VHga
insert into MESSAGE (TEXT) values ('Hello, world!'); )>ML7y
select TEXT from MESSAGE; &m--}
drop table MESSAGE; 5x@ U<
h.tj8O1
tEL;,1
Tcl L<V20d9
#!/usr/local/bin/tcl b=Nsz$[
puts "Hello, world!" !5d n7Wuj
oVw4M2!"K
%ZoJu
TScript /K!)}f(6
? "Hello, world!" 3@=<4$
}!^h2)'7
W
$D 34(
Turing +(Y\w^@%H
put "Hello, world!" .Vt|;P}
c&T5C,]
L@\t]
~
UNIX-style shell ]MYbx)v)
程序中的/bin/sh可改为您使用的shell ;d<XcpK}
TU?n;h#TZ
#!/bin/sh k
Fl*Im
echo 'Hello, world!' %# uw8V
Wqv7
N,w6
GUI q<\r}1Dm
+_:p8,
5o
Delphi |!K&h(J|
program HelloWorld; |6NvByc,
uses :vi %7
Dialogs; ]/!*^;cY(
begin Q+f|.0r
ShowMessage('Hello, World!'); !}c D e12
end. @16y%]Q-E#
IRM jL.q
%enJ[a%Qg
Nuva ` .`:~_OE
<. ]}SV%*{%
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) s;h`n$
.> f@Mku0VT
PE7V1U#$o,
'0 Ys`Qo
Visual Basic +]t9kr
MsgBox "Hello, world!" >kAJS??
'或者 1%M^MT%&
Print "Hello, world!" leHKBu'd
IO#)r[JZ
{$ N\@q@v~
Visual FoxPro TPb&";4ROf
? "Hello, world!" ruqE]Hx9(
JK)|a@BtOT
W{IP}mM
X11 J>dj]1I
用一个程序 E2
'Al6^C
Ew}GPJ
xmessage 'Hello, world!' H?opG<R=ek
fx 0 8>r
用C++和gtkmm 2 L,_U co
-C^qN7Bz
#include <iostream> .~'q
yD2V
#include <gtkmm/main.h> Ge$&