“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。 }b~;x6
Wo<zvut8
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》。 M~t S
*
D"oyl`q
以下是用不同语言写成的Hello World程序的几个例子: Y? =+A4v
Ada 8sOM%y9M
with Ada.Text_Io; use Ada.Text_Io; ?_3K]i1IS
procedure Hello is cxFfAk\,en
begin {a- p/\U
Put_Line ("Hello, world!"); 1C6H\;
end Hello; $5z
O=`
x>8=CiUE
9He>F7J:p'
汇编语言 .h-:)e*
(y7U}Sb'
x86 CPU,DOS,TASM zjs@7LN
MODEL SMALL Ev|2bk \
IDEAL mWZoo/xtT
STACK 100H Fyrr,#
V
lN&Lz
DATASEG RcitW;{|Kg
HW DB 'Hello, world!$' ;]3Tuq
,YX[6eZr
CODESEG N9 3
ZI|T
MOV AX, @data 44B)=p7
MOV DS, AX ):E4qlB
MOV DX, OFFSET HW #>g]CRN
MOV AH, 09H i9[=x(-@
INT 21H :(VD<"X
MOV AX, 4C00H 5 5>^H1M
INT 21H @[D-2s
END eVL'Ao&Ho
M]oO1GM
3de<H=H'
x86 CPU,GNU/Linux,NASM +]*4!4MK6
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). WUkx v*
;Enter this into "hello.asm" then type: 5K|1Y#X
;"nasm -f elf hello.asm" Q7zg i
;"ld hello.o -o hello" ABvB1[s#
;"./hello" |Tuk9d4]
a938l^@;s8
section .data ;data section declaration rIR~YMv!
msg db 'Hello World!',0AH R@-rc|FunJ
len equ $-msg ;string length m{gx\a.5
% zHsh
section .text ;code section declaration pPem;i^~
global _start ;entry point (start of execution) _"6{Rb53v=
_start: mov edx,len ;string length :jKDM
mov ecx,msg ;string start pi[:"}m]/P
mov ebx,1 ;file handle: stdout /xj^TyWM
mov eax,4 ;sys_write SsiAyQ|Ma
int 80h ;kernel system call Z6\OkD
(dv Cejc^p
mov ebx,0 ;return value "l6v[yv
mov eax,1 ;sys_exit xG@zy4
int 80h ;kernel system call [vV]lWOp'
fmILkXKz
jXB<"bw
x86 CPU,Windows,MASM32 H@GiHej
.386 Ufd{.o[{-
.model flat,stdcall 1nhC! jDD
option casemap:none 4zX@TI>j
;Include 文件定义 zL$$G,
include windows.inc z)I.^
include user32.inc T|`nw_0
includelib user32.lib uA dgR
include kernel32.inc 7'\<\oT
includelib kernel32.lib g+|1khS)
;数据段 fl*]ua
.data 7'uuc]\5>
szCaption db 'A MessageBox!',0 }a6tG
szText db 'Hello,world!',0 #9uNJla
;代码段 J=|PZ2"
.code {>'GE16x
start: @eu4W^W
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 6a51bj!f
invoke ExitProcess,NULL |{udd~oE&
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> gZF-zhnC
end start GZ(
W64
8%q:lI
o5)lTVQ~~
AWK sr1 `/
BEGIN { print "Hello, world!" } " )T;3/c
LK5,GWF;
h BD .IB
BASIC ]E$h7I
传统版BASIC(例如GWBASIC): "u:5
v#J2yg
10 PRINT "Hello, world!" ]JF>a_2wG
20 END O
N..B}J
C&?Z\$
-/
或在提示符输入: IIcG+zwx
Gv?3T Am8
?"Hello, world!":END ;5QdT{$H
Ry9kGdqO
现代版BASIC(例如Quick BASIC): CmKbpN*
|X@ZM
Print "Hello, world!" +j
Z,vKr
mDZ/Kp{
以下的语句在Quick BASIC中同样有效: L,6v!9@
eK[8$1
? "Hello,world!" `5,46_
I~ Q2jg2
?T]3I.3
2^
BCPL C.`C T7
GET "LIBHDR" FJxg9!%d
[xW;5j<87
LET START () BE yh~*Kt]9Ya
$( 3VNYDY`>
WRITES ("Hello, world!*N") G+&ug`0]5
$) r$<-2lW
KCEBJ{jM
s?r:McF`
Befunge 6Q\0v
"!dlrow olleH">v gD`|N@W$5
, {}>s0B
^_@ i [,9hp
} o^VEJc`O
&5k$v^W5
Brainfuck Itaq4 ^CE
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Y~vyCU5nWR
+++++++++++++++.>.+++.------.--------.>+.>. W.u+R?a=
xv|?;Zf6w
eQK}J]S<
C Z',Z7QW7
#include <stdio.h> zY_?$9l0
o3C7JG
int main(void) %%d3M->C}
{ C{Y0}ZrmlF
printf("Hello, world!\n"); 0m8mHJ<&
return 0; i" 0]L5=P
} !' ;1;k);
,6N|?<26O
.T;:6/??1
C++ $#2zxpr,
#include <iostream> o_=t9\:
/qf(5Bm
int main() |AD"}8
{ vlW521
std::cout << "Hello, world!" << std::endl; rf@Cz%xDD
return 0; C1/qiSHsh
} Y
1v9sMN,
jd>ug=~x
oW[];r
C++/CLI ,v^A;,q
int main() ldFK3+V
{ NA@<v{z
System::Console::WriteLine("Hello, world!"); pf&H !-M
} | R\PQ/)
P_7QZ0k/
OO$YwOKS
C# (C Sharp) 4th*=ku
class HelloWorldApp >aw`kr
{ 'c]Fhe fb
public static void Main() Ddu1>"p-x
{ F"|OcKAA}h
System.Console.WriteLine("Hello, world!"); 0[\sz>@
} >]/RlW[
} w^BF.Nu
ML:Zm~A1U
$G UCVxs
COBOL ]{.iv_I
IDENTIFICATION DIVISION. @la/sd4`
PROGRAM-ID. HELLO-WORLD. 8rV"? m`S
zeqwmV=
ENVIRONMENT DIVISION. v,}Mn7:
$%:=;1Jl
DATA DIVISION. \t=ls
[:Upn)9
PROCEDURE DIVISION. \}Hi\k+h':
DISPLAY "Hello, world!". >_3P6-L>
STOP RUN. FGRdA^`
P]A~:Lj
+Oxw?`I$
Common Lisp 0gevn
(format t "Hello world!~%") -!bfxbP
4`X]$.
b7uxCH]Z
DOS批处理 Cf~vT"
@echo off LdH23\
echo "Hello, world!" U))2?#
J]AkWEiCJ
J=l\t7w
Eiffel :abpht
class HELLO_WORLD >Tf <8r,
NsJ]Tp5!
creation qpEK36Js
make XJSI/jpa@
feature &mPR[{
make is ;#/Uo8
local /l%+l@
io:BASIC_IO w/49O;r V
do m=K46i+NE
!!io vB?(|
io.put_string("%N Hello, world!") v?@=WG
end -- make t3l-]
end -- class HELLO_WORLD S!Bnz(z
<(E9U.
6Cpn::WW}
Erlang QJH((
-module(hello). xo
GX&^=
-export([hello_world/0]). 7*MjQzg-P
O$*\JL
hello_world() -> io:fwrite("Hello, World!\n"). yDORL|
E'
?PSJQ3BC|
Tfytc$aQ
Forth "KHe6otmi_
." Hello, world!" CR I9ZJ"29
j>I.d+
s$3WJ'yr
Fortran e~1$x`DH
WRITE(*,10) 77/j}Pxh
10 FORMAT('Hello, World!') }C'h<%[P
STOP 0l'"idra
END Ly_.%f
qDK\MQ!
cx_$`H
HTML sUl
_W"aQ
<HTML> 95IR.Qfn!
<HEAD> Rq[VP#
<TITLE> Hello World! </TITLE> QUb#84
</HEAD> 3E$h
W
<BODY> y,F|L?dIq
<p>Hello World!</p> /ReOf<%B
</BODY> (GJX[$@
</HTML> 6DxT(VU}
cs-dvpMZ
vO
3-B
HQ9+ yyv<MSU8
H '{F
Od_uk%
VthM`~3
PBY;SG~
INTERCAL SrT=XX,
PLEASE DO ,1 <- #13 6xW17P
DO ,1 SUB #1 <- #238 KkPr08
DO ,1 SUB #2 <- #112 /zTx+U.\I
DO ,1 SUB #3 <- #112 oFDJwOJ'Bj
DO ,1 SUB #4 <- #0 !4"<:tSO
DO ,1 SUB #5 <- #64 jlM%Y
ZC
DO ,1 SUB #6 <- #238 [E:-$R
DO ,1 SUB #7 <- #26 rXF=/
DO ,1 SUB #8 <- #248 (@3?JJ]1
DO ,1 SUB #9 <- #168 hNL_e3
DO ,1 SUB #10 <- #24 Wg[ThaZ
DO ,1 SUB #11 <- #16 p8X$yv
DO ,1 SUB #12 <- #158 $1.l|
DO ,1 SUB #13 <- #52 pcO{%]?p
PLEASE READ OUT ,1 MngfXm
PLEASE GIVE UP r.10b]b
[W--%=Ou
]D\p<4uepM
Java +]S!pyZ"
public class Hello tK LAA+Z
{ be(p13&od
public static void main(String[] args) |>Wi5h{6X
{ Y6ORI
System.out.println("Hello, world!"); QV*W#K\7q
} 8
huB<^
} v>'mW
gH[lpRu|7
39Zs
JSP />[~2d
kb
<% BDc "0XH
out.print("Hello, world!"); c
6$n:
%> kOLS<>.
qp`G5bw
.9u,54t
MIXAL a4D4*=!G0
TERM EQU 19 the MIX console device number }<
m@82\
ORIG 1000 start address zE_t(B(Q
START OUT MSG(TERM) output data at address MSG gLQbA$gB
HLT halt execution P#x]3j]
MSG ALF "MIXAL" yL%k5cO$N
ALF " HELL" }c;h:CE#
ALF "O WOR" bl-t>aO*.V
ALF "LD " ~glFB`?[
END START end of the program 8+U':xR
90]{4 ]y;
Nk/Ms:57y
Nuva c69M
<..直接输出..> VsR`y]"g
Hello, world! K$Yc!4M
*EzAo
<..或者..> liG3
'<KzWxuC
<. K)n0?Q_>
// 不带换行 pgU4>tyD
? "Hello, world!" 9KLhAYaq
}dSxrT
// 或者 bcy(
?(
C@q&0\HN
// 带换行 ds9`AiCW>
?? 'Hello, world!' .+cYzS]!
.> sw@*N
S.Fip_
]0wmvTR
OCaml 3tTz$$-#
let main () = QU{\ClW/?
print_endline "Hello world!";; Pf]O'G&F
07dUBoq
PX1Scvi
Pascal dLek4q
`l
program Hello; 6uH1dsD
begin 7J%v""\1!
writeln('Hello, world!'); WsCzC_'j.
end. 4)3!n*I
y[!4M+jj
4';]fmf@[i
Perl >MIp r
#!/usr/local/bin/perl 'D4KaM.d
print "Hello, world!\n"; SEXLi8;/
i#~1|2
9N'um%J3%s
PHP Z0 e+CEzq
<?php HG%H@uK
print("Hello, world!"); IJn r^S8
?> J}.y+b>8\
fV.43E
db!2nImNu\
Pike Pk; 9\0k7
#!/usr/local/bin/pike K,IPVjS
int main() p3eJFg$
{ ZN ?P4#ZS
write("Hello, world!\n"); s
`r tr
return 0; OQA3 ~\Vu
} 6]}Xi:I
g/q$;cB
EN%Xs578
PL/I 32IN;X|
Test: procedure options(main); 8&=+Mw
declare My_String char(20) varying initialize('Hello, world!'); 5W!E.fz*T
put skip list(My_String); ~j\/3;^s
end Test; ;6 1m
lC1X9Op
xy|-{
Prolog GfQP@R"
goal ytmlG%
write("hello,world!"). 8[FC
*3<m<<>U
FJ}QKDQW=
Python ':!;6v|L
#!/usr/local/bin/python uu>[WFh
print "Hello, world!" 'eo2a&S2D
*0R=(Gy
r`cCHZo/V
REXX +>OEp*
j
say "Hello, world!"
?#kI9n<O
\Rp)n=|
4:<0i0)5
Ruby 5H 1(C#|
#!/usr/bin/ruby nL+*Ja
print "Hello, world!\n" }M|
;lAz@jr+
u 3,b,p
Scheme {djOU
9]
(display "Hello, world!") oT|E\wj
(newline) z<<` 1wqg
3Uag[ms
6XQ)Q)
sed (需要至少一行输入) 66'TdF]"
sed -ne '1s/.*/Hello, world!/p' h)wR[N]n
~:)$~g7>b
:M3l#`4Q
Smalltalk O:7y-r0i
Transcript show: 'Hello, world!' 6g$04C3tHi
~*B1}#;
z7P PwTBa
SNOBOL <tF]>(|M
OUTPUT = "Hello, world!" v,|;uc+
END ?o.G@-
,(`@ZFp$
RL&3 P@r
SQL I;-{#OE,
create table MESSAGE (TEXT char(15)); ?$n<