“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。 %~e+H|
u+7S/9q8
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》。 n2V
$dF4m
@k-C>h()C
以下是用不同语言写成的Hello World程序的几个例子: W(jOD,QMB
Ada w!%"b03q
with Ada.Text_Io; use Ada.Text_Io; ?W 6
:$
procedure Hello is 88 &M8T'AP
begin eae `#>XP
Put_Line ("Hello, world!"); ;;|o+4Ob;
end Hello; 0SV<Pl^
U-*`I?~=4
NNxzZ!q!
汇编语言 a$=He
\1He9~6
x86 CPU,DOS,TASM 4{QD: D(D
MODEL SMALL G"F)t(iX
IDEAL Et! 6i7`]
STACK 100H ,<(0T$o E[
/jl/SV+
DATASEG s'^sT=b
HW DB 'Hello, world!$' ,p>@:C/M
oLS/
CODESEG Xqy9D ZIn
MOV AX, @data G,}"}v:
MOV DS, AX Ya&\ b 6
MOV DX, OFFSET HW P,rD{ 0~
MOV AH, 09H 5m
yQBKE
INT 21H ._q}lWT
MOV AX, 4C00H ]]NTvr
INT 21H 7O-fc1OTv
END 1)#dgsa
mb>8=hMg
FN/siw(?3
x86 CPU,GNU/Linux,NASM ?="?)t[
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). c2u*<x
;Enter this into "hello.asm" then type: g3
opN>W
;"nasm -f elf hello.asm" ^kK% 8 u
;"ld hello.o -o hello" 6~-,.{Y
;"./hello" aHdQi,=z
K: |-s4=
section .data ;data section declaration -%dBZW\u2
msg db 'Hello World!',0AH xErAs}|
len equ $-msg ;string length zHKx,]9b
^ X-6j[".
section .text ;code section declaration -wr_x<7
global _start ;entry point (start of execution) W9QVfe#s
_start: mov edx,len ;string length p^1~o/
mov ecx,msg ;string start }]Nt:_UCX
mov ebx,1 ;file handle: stdout `nRF"T_
mov eax,4 ;sys_write q8!]x-5$6j
int 80h ;kernel system call k;Fxr%
]v]tBVO$
mov ebx,0 ;return value X/_89<&
mov eax,1 ;sys_exit CQPq5/@Y4
int 80h ;kernel system call L&d.&,CNs'
?./%7v
`2/V.REX$h
x86 CPU,Windows,MASM32 [C\B2iU7_M
.386 IL1iTRH
.model flat,stdcall ,M~> t7+
option casemap:none gquvVj1oT
;Include 文件定义 +4Fw13ADE
include windows.inc I1#MS4;$^
include user32.inc r@}8TE*|P
includelib user32.lib gLRDd~H
include kernel32.inc 7X)4ec9H\
includelib kernel32.lib ;XQ27,K&
;数据段 5,4m_fBoW
.data ~9"c64 q
szCaption db 'A MessageBox!',0 =\k:]
szText db 'Hello,world!',0 =kf"%vFV
;代码段 {5fL!`6w
.code ^^lx Ot
start: p I~;3T:!
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK zkiwFEHA=
invoke ExitProcess,NULL 'tDUPm38
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ExMd$`gW
end start d"n"A?nXh
gX7R-&[UD
eco&!R[G
AWK S;y4Z:!
BEGIN { print "Hello, world!" } 6B*#D.fd*
"$aoI Xv
RehraY3q
BASIC u:f.;?
传统版BASIC(例如GWBASIC): G')zDx
=LODX29
10 PRINT "Hello, world!" (,tu7u{
20 END oam;hmw
z[ 'G"yCi
或在提示符输入: 2wDDVUwy B
gWoUE7.3`
?"Hello, world!":END 5@-H8*
(KwC,0p
现代版BASIC(例如Quick BASIC): `R>z{-@=
FUlhEH
Print "Hello, world!" "*.N'J\
vf$IF|
以下的语句在Quick BASIC中同样有效: E4>}O;m0
,lStT+A
? "Hello,world!" @K+gh#
? dHl'
cJv/)hRaz
BCPL wpN3-D
GET "LIBHDR" vV*J;%MO
<nN.$4~X
LET START () BE qT !lq
$( |Tc4a4 jS
WRITES ("Hello, world!*N") O,|NOz
$)
7s#8-i
Eu:/U*j
'vZIAnB8
Befunge 16Jq*hKU
"!dlrow olleH">v _@!vF,Wcf
, ooUVVp
^_@ <Q/)SN6_E
bT&{8a
R-9o3TPa
Brainfuck +(92}~RK
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Z#-N$%^F
+++++++++++++++.>.+++.------.--------.>+.>. `6J7c;:
WV.hQX9P
iiMS3ueF
C y|KQ`;
#include <stdio.h> YCh`V[0
<{Y3}Q
int main(void) !ess.U&m'
{ GT6i9*tb#
printf("Hello, world!\n"); v9-4yZU^WR
return 0; cI@qt>&
} )Yy5u'}
-43>?m/a
un_NBv}
C++ &Wcz~Gx3Q
#include <iostream> Cj-&L<
,++HiYOG}e
int main() )Bn
}|6`
{
T`fT[BaY
std::cout << "Hello, world!" << std::endl; n19A>,m
return 0; T=tW'tlT\v
} "WQ6[;&V
6,q_M(;c
SfC* ZM}<
C++/CLI O}Pqbx&
int main() aYT!xdCI
{ #<b\B qYG
System::Console::WriteLine("Hello, world!"); Od~uYOL/B
} uK$ Xqo%L
[BD`h
RVttk )Ny
C# (C Sharp) YZ+G7D>
class HelloWorldApp O[t?*m1/
{ )~=8Ssu
public static void Main() 1bQO:n):~
{ &lSNI5l
System.Console.WriteLine("Hello, world!"); ydYsmTr
}
9)W3\I>U-
} gR# k'
cWx`y><
oio{@#DX`
COBOL AaA!U!B
IDENTIFICATION DIVISION. Dh2Cj-|
~
PROGRAM-ID. HELLO-WORLD. b`D]L/}pr
A(E}2iP9=
ENVIRONMENT DIVISION. }6-olVg
&Jj|+P-lY
DATA DIVISION. !;|#=A9
ao9#E"BfM
PROCEDURE DIVISION. TYGI
f4z
DISPLAY "Hello, world!". Q&r.wV|
STOP RUN. 1Y $%| `
CdRJ@Lf
KLW5Ad:/rI
Common Lisp __9FQ{Ra
(format t "Hello world!~%") @,.D]43
N
Nk
z8t;jw
DOS批处理 W..*!UGl
@echo off Pz0MafF|T
echo "Hello, world!" s,#We} bv
Vq]ixag2^
v%cCJ SO#
Eiffel lM4 Z7mT /
class HELLO_WORLD >eG<N@13p
b-VtQ%Q
creation 85G-`T
make C\5G43`
feature hQj@D\}
make is <">epbV6
local &^#iS<s1
io:BASIC_IO S=)
c7t?a
do 4xg)e`
*U
!!io H5Eso*v@
io.put_string("%N Hello, world!") nX3?7"v
end -- make Jg=!GU/::
end -- class HELLO_WORLD f}2}Ta
;:
_K,FU
/J-'[Mc'D[
Erlang E} XmZxHV
-module(hello). u@e.5_:S)
-export([hello_world/0]). %f&Y=
KHZ[drb6$
hello_world() -> io:fwrite("Hello, World!\n"). <9X@\uvU.<
Hh;lT
}#D=Rf?2\P
Forth n?cC]k;P~
." Hello, world!" CR sPZwA0%
HJ]v-
^7+;XUyg
Fortran 'k\j[fk/K
WRITE(*,10) W>a}g[Ad
10 FORMAT('Hello, World!') ZH\t0YhrVe
STOP {p1`[R&n#
END N,qo/At}R[
%Ve@DF8G
})^eaLBR4
HTML !1I# L!9
<HTML> AVDhgJv
<HEAD> 13F]7l-#
<TITLE> Hello World! </TITLE> VnW6$W?g
</HEAD> WRu(F54Sk
<BODY> I ==)a6^
<p>Hello World!</p> <e BmCrJ
</BODY> 2fr%_GNu
</HTML> 8a8a:d
z[J=WI
iT==aJ=~/&
HQ9+ UAXp;W`
H *O'|NQhNx>
;&J>a8B$
'e]>lRZ
INTERCAL (.!9
PLEASE DO ,1 <- #13 }O~D3z4l0
DO ,1 SUB #1 <- #238 A@<
! '
DO ,1 SUB #2 <- #112 5B:"$vC{=
DO ,1 SUB #3 <- #112 TfZ M0Wz
DO ,1 SUB #4 <- #0 WMC^G2 n
DO ,1 SUB #5 <- #64 B)@Xz<Q
DO ,1 SUB #6 <- #238 ":+d7xR?o
DO ,1 SUB #7 <- #26 ]'xci"qV`
DO ,1 SUB #8 <- #248 W'@G5e
DO ,1 SUB #9 <- #168 %!Eh9C*
DO ,1 SUB #10 <- #24 `uPO+2
DO ,1 SUB #11 <- #16 ^}$t(t
DO ,1 SUB #12 <- #158 s3A(`heoq
DO ,1 SUB #13 <- #52 I>.pkf<V
PLEASE READ OUT ,1 Ao?b1VYy/
PLEASE GIVE UP #g$I>\O<
&cyB}Gv
Ux',ma1JK
Java JzN "o'
public class Hello hJ8&OCR }
{ p9i7<X2&
public static void main(String[] args) <$?#P#A
{ :a&M]+!
System.out.println("Hello, world!"); *bpN!2
} 0);5cbV7i
} [F*yh9%\
]p+KN>1e
+arh/pd_I
JSP [.|& /O
<% [K
#$W
out.print("Hello, world!"); `/m]K~~
%> -ABj>y[
?3DFm
5,XEN$^
MIXAL bl!pKOY
TERM EQU 19 the MIX console device number ][Tw^r&
ORIG 1000 start address h/C{
START OUT MSG(TERM) output data at address MSG lW-G]V
HLT halt execution rV"3oM]Lo
MSG ALF "MIXAL" Nz{qu}dt
ALF " HELL" $Xo_8SX,
ALF "O WOR" k"[AV2UW1
ALF "LD " DHn\ =M
END START end of the program zhow\l2t}
$ H@
n>JJ Xw,,
Nuva IG}yGGn
<..直接输出..> B_Gcz5
Hello, world! =zAFsRoD_B
'U&]KSzxv
<..或者..> ^0_ >
ysp,:)-%G@
<. }duqX R
// 不带换行 jm&[8ApW
? "Hello, world!" &VU^d3gv~
^K[xVB(&
// 或者 (@T{ [\
5<GeAW8ns]
// 带换行 y<IHZq`C3
?? 'Hello, world!' '9vsv\A&
.> !2B~.!&
yWc%z6dXC
_{if"
OCaml v^/<2/E"?4
let main () = qe1>UfY
print_endline "Hello world!";; 3:sc%IDP
M4?>x[Pw
@ajdO/?(Y
Pascal S~z$=IiB
program Hello; yIpgZ0:h
begin h+q#|N
writeln('Hello, world!'); v8uUv%Hkd
end. nF3Sfw,
k=Wt57jt
~P!=fU)
Perl @/01MBs;
#!/usr/local/bin/perl .d#Hh&jj
print "Hello, world!\n"; 8j]QnH0&
ga1b%5]v.
|Cfo(]>G
PHP Q[`2?j?
<?php 1-4[w
*u>
print("Hello, world!"); )zP"Uuu
?> =AHV{V~
KJ-Q$
M
x1CMW`F
Pike DAN"&&
#!/usr/local/bin/pike *D7oHwDU
int main() (d
<pxx
{ f|!@H><
write("Hello, world!\n"); 4g.S!-H@R
return 0; X5tV Xd
} zcEpywNP
<(qdxdUp
!VfVpi+-
PL/I ,5sv;
Test: procedure options(main); .L]2g$W\p
declare My_String char(20) varying initialize('Hello, world!'); b` 9Zin
put skip list(My_String); lnxA/[`a
end Test; 4
>D5t)254
H/G;hk
xJvalb
Prolog i079 V
goal lFgE{;z@
write("hello,world!"). .B$3y#TOb
Gg7ZSB 7
Pb :6nH=
Python S7hfwu&7F
#!/usr/local/bin/python RQn3y-N]
print "Hello, world!" y+VRD
m)<N:|
AWmJm)
REXX qkyYt#4E
say "Hello, world!" Od]wh
st CFLYox
%x$mAOUv
Ruby gE!`9 #..
#!/usr/bin/ruby O{G $]FtF
print "Hello, world!\n" "w{,ndZ
>LB x\/
D-5~CK4`
Scheme nx4E}8!Lh
(display "Hello, world!") -(.\> F
(newline) 6HR*)*>z_
p WKpc
q/YO5>s15
sed (需要至少一行输入) O[')[uo8s
sed -ne '1s/.*/Hello, world!/p' V P4ToYc
S4X['0rX!
CQ%yki
Smalltalk :20k6 )
Transcript show: 'Hello, world!' j(=zc6m
3_k3U
QmB,~x{j>
SNOBOL ~f%AbDye
OUTPUT = "Hello, world!" %^8>=
END jLf8 7
4K*DEVS
_b 8XF&O
SQL A,#hYi=-,
create table MESSAGE (TEXT char(15)); O0<GFL$)&
insert into MESSAGE (TEXT) values ('Hello, world!'); \8X8NCM
select TEXT from MESSAGE; x?Oc<CQ-2
drop table MESSAGE; [Z?vC
NBZ>xp[U
}u7&SU
Tcl oWc
+i U(
#!/usr/local/bin/tcl OKq={l
puts "Hello, world!" pV))g
e\
&U/~*{
'}wYSG-
TScript 0#KB.2AP
? "Hello, world!" P1l@K2r
P X<,/6g z
xR;-qSl7Ms
Turing :O}<Q
put "Hello, world!" aw:0R=S,>
#8d$%F))
NeyGIEP
UNIX-style shell MXhRnVz"W
程序中的/bin/sh可改为您使用的shell cBA2;5E
\
o&i63u
#!/bin/sh v)2@;Q
echo 'Hello, world!' j{'@g[HW
Lsozl<@
@]h#T4z'
GUI ptuW}"F
93(
Delphi 7iKbd
program HelloWorld; g%<7Px[W
uses Ic/<jFZXM
Dialogs; U-s6h;^O
begin c~|/,FZU'
ShowMessage('Hello, World!'); !J'xk
end. HF\L`dJX?
3-8Vw$u
qwaw\vOA
Nuva yK&)H+v
<. j{P,(-
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) rd1&?X
.> X6<HNLgra
GW{Nc!)
{+t'XkA
Visual Basic }wkBa]
MsgBox "Hello, world!" Qzh:*O
'或者 )-a_,3x%j
Print "Hello, world!" 3P6!j
3G8uXB_`}
D0k7)\puQ
Visual FoxPro +dh]k=6
? "Hello, world!" ` ?6m0|\@
l2`8]Qr
,.}PZL
X11 "msg./iC
用一个程序 (%fGS.TR
v*BA\&
xmessage 'Hello, world!' Iwn@%?7
?I@3`?'
用C++和gtkmm 2 WAdl@){
O:BP35z_F
#include <iostream> $qrr]U
#include <gtkmm/main.h> ^3yjE/Wi"
#include <gtkmm/button.h> Y+=@5+G
#include <gtkmm/window.h> Om1z
using namespace std; <0LB]zDWe6
7R2)Klt
class HelloWorld : public Gtk::Window s{:
Mu~v
{ <m6I)}K
public: \qTNWA#'
HelloWorld(); #U_u~7?H$
virtual ~HelloWorld(); ~fUSmc
protected: <NAR'{f
Gtk::Button m_button; (7wR*vO^
virtual void on_button_clicked(); s]&y\Z
}; &S-& 'ZAY
E8dp
HelloWorld::HelloWorld() : m_button("Hello, world!") IGqmH=-
{ h1gb&?w5P
set_border_width(10); Q:MsD.
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); &sNID4FR
add(m_button); .>nd@oU
m_button.show(); s+w<!`-
} =Ffq =<
k2WO*xa*
HelloWorld::~HelloWorld() {} i;xMf5Jz
% b&BLXW
void HelloWorld::on_button_clicked() SWGa%6|
{ %i
"
cout << "Hello, world!" << endl; jlP7'xt1%
} !?>)[@2
k6
9]w0zUOL6
int main (int argc, char *argv[]) bOdv]nQ1
{ Zs{R O
Gtk::Main kit(argc, argv); k$ M4NF~$
HelloWorld helloworld; _Kj.
Gtk::Main::run(helloworld); M^f1D&A