“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。 S 2` ;7
nK;
rEL
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》。 l`G:@}P>G
-x5bdC(d
以下是用不同语言写成的Hello World程序的几个例子: ^hTJp{
Ada YXOD
fd%L
with Ada.Text_Io; use Ada.Text_Io;
B#lj8I^|
procedure Hello is %bETr"Xom
begin )%W2XvG
Put_Line ("Hello, world!"); (9QRg;
end Hello; ~w%+y
w9}IM149
W..>Ny;'3
汇编语言 3m9E2R,
B}bNl 7
~
x86 CPU,DOS,TASM }Qu
7o
MODEL SMALL :Gk~FRA|
IDEAL zm.sX~j
STACK 100H U*l>8
J*k=|+[
DATASEG >I;#BE3
HW DB 'Hello, world!$' B_1u<00kg
0pG(+fN_9
CODESEG Z@Z`8M@Q,
MOV AX, @data ,S K6*tpI
MOV DS, AX iC\=U
MOV DX, OFFSET HW lJ2/xE ]
MOV AH, 09H e 2&i
INT 21H KAaeaiD
MOV AX, 4C00H alD|-{Bf
INT 21H >}tG^ )os
END m$j;FKz+|
R9HS%O6b6
e/%YruzS
x86 CPU,GNU/Linux,NASM }tq9 /\
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). rkXSygb
;Enter this into "hello.asm" then type: 3hjwwLKG$
;"nasm -f elf hello.asm" _)\,6| #
;"ld hello.o -o hello" ;0{*V5A
;"./hello" KPrxw }P
f4^_FK&
section .data ;data section declaration `{;&Qcg6m
msg db 'Hello World!',0AH IKj1{nZvDc
len equ $-msg ;string length `2+52q<FO
'KrkCA
section .text ;code section declaration 5Uz(Bi
global _start ;entry point (start of execution) 09i[2n;O
_start: mov edx,len ;string length LLN^^>5|l
mov ecx,msg ;string start "6h.6_bTw
mov ebx,1 ;file handle: stdout ou4?`JF)-
mov eax,4 ;sys_write 1@Gv`{v
int 80h ;kernel system call x/v+7Pt_
$*> _0{<
mov ebx,0 ;return value KL{uhb0f
mov eax,1 ;sys_exit \}c50}#0
int 80h ;kernel system call lsf?R'1
nQMN2j M
-I<`!kH*
x86 CPU,Windows,MASM32 o?\Pw9Y
.386 AX?6Q4Gq1
.model flat,stdcall oDK\v8w-
option casemap:none s_Gp +-
;Include 文件定义 6YbSzx`?k
include windows.inc cV,URUD
include user32.inc `_kRvpi
includelib user32.lib qN(;l&Q
include kernel32.inc pm|]GkM
includelib kernel32.lib g_=ZcGC
;数据段 <Z_`^~!
.data xJlq2cK
szCaption db 'A MessageBox!',0 '!GI:U+g
szText db 'Hello,world!',0 [Y+bW#'
;代码段 W;yZ$k#q}(
.code ;B@l0)7(x
start: @[lr
F7`o
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK YzVLa,[
invoke ExitProcess,NULL n`1i k'x?
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> *8+YR
end start ru
Lcu]
21Opx~T3
/GNYv*
AWK efm<bJB2
BEGIN { print "Hello, world!" } 0cVXUTJ|W
J(GLPC O$K
l1-FL-1
BASIC s"Wdbw(O '
传统版BASIC(例如GWBASIC): jiDYPYx;I
B(U`Zd
10 PRINT "Hello, world!" D:0PppE
20 END '-qc\6UY
':@qE\(
或在提示符输入: 6OUjc
irS62Xe
?"Hello, world!":END -0Ek&"=Z^
6cvm\opH
现代版BASIC(例如Quick BASIC): 9 R1]2U$|
^~$
o-IX
Print "Hello, world!" .Dz /MSl
8X5XwFf}
以下的语句在Quick BASIC中同样有效: D=$<Ex^p
ml2HA4X&$Y
? "Hello,world!" =nl,5^
fq'Of
wT
oB@C-(M
BCPL h
!1c(UR
GET "LIBHDR" Bc@e;k@i
R
_%pR_\
LET START () BE wH.'EC
$( 3&
$E
WRITES ("Hello, world!*N") ZVL0S{V-mh
$) "-oC,;yq
fyeS)
mBF?+/l
Befunge &3efJ?8
"!dlrow olleH">v |SmN.*&(9
, U ;/ )V
^_@ /r6DPR0\
D.~t#a A
&R]G)f#w%*
Brainfuck g&
Rk}/F
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< mdd~B2"el
+++++++++++++++.>.+++.------.--------.>+.>. JB7]51WH@
]SI`fja/
]Yy
Sf
C P!/8
#include <stdio.h> @\a- =
idq= US
int main(void) 'n=D$j]X
{ ?.H*!u+9>
printf("Hello, world!\n"); j(rFORT
return 0; ~[{| s')
} 9azPUf)
C
J.*=7zmw
w~`P\i@
C++ *!/9?M{p
#include <iostream> jB;+tDC!Co
9/Ls3U?
int main() P-C_sj A7
{ F&Gb[Q&a8
std::cout << "Hello, world!" << std::endl; /"U<0jot
return 0; q)/4i9
} Tr8+E;;
F=#Wfl-o
bF.Aj8ZQ
C++/CLI c=5$bo]LI
int main() '#fj)
{ AG?oA328
System::Console::WriteLine("Hello, world!"); 31}6dg8?n
} _Cxs"to
anbr3L[!
ZO,]h9?4
C# (C Sharp) _Cs.%R!r
class HelloWorldApp -(jcsqDk
{ $_y"P
public static void Main() #S"=)BZ8L
{ a?;{0I:Ln
System.Console.WriteLine("Hello, world!"); PrCq
JY
} pd|s7
} l!b#v`
JkKI/5h
nm)F tX|A
COBOL CAX U
#
IDENTIFICATION DIVISION. ("{'],>
PROGRAM-ID. HELLO-WORLD. *(rq AB0~
SF6n06UZu
ENVIRONMENT DIVISION. z)ydQw>
|qBo*OcO
DATA DIVISION. K
\O,AE
NH{0KZ
R
PROCEDURE DIVISION. uJ[dO}
DISPLAY "Hello, world!". bV"0}|A~K
STOP RUN. :KQ<rLd
=hA/;
oyUf/Sl
Common Lisp ^71sIf;+
(format t "Hello world!~%") qU"+0t4
9]Y@eRI<
UZyo:*yB
DOS批处理 O_E[FE:+
@echo off Y!5-WXH
echo "Hello, world!" $ZA71TzMV
yEH30zSt
`18G
5R
Eiffel /h_BF\VBs
class HELLO_WORLD $I_aHhKt
0j*8|{|
creation +=||c\'
make g;-CAd5
feature u~K4fP
make is 7&X^y+bMe6
local 9N9;EY-U
io:BASIC_IO k]v a
do hgm`6TQ
!!io Uu
G;z5
io.put_string("%N Hello, world!") N(D_*% 96
end -- make mF
"ctxE
end -- class HELLO_WORLD ;&iQNXL
RsE+\)
/vBp Rm
Erlang +Ta7b)
-module(hello). spJB6n(
-export([hello_world/0]). ;lP)
c(o8uWn
hello_world() -> io:fwrite("Hello, World!\n"). oM< 9]jK}
GSypdEBj+w
$Q62
7
Forth 5RqkAC
." Hello, world!" CR V97Eb>@
SA'
zy45
hse$M\5
Fortran !?]NMf_
WRITE(*,10) NKRNEq!
10 FORMAT('Hello, World!') LdA&F&
pI
STOP gzeG5p
END Ra.<D.
<CeDIX t
aaLT%
HTML hEDj"`Px
<HTML> 7Ij'!@no
<HEAD> pZXva9bE
<TITLE> Hello World! </TITLE> `/"TYR%
</HEAD> Jcm"i~
<BODY> 75%!R
<p>Hello World!</p> gg933TLu(Q
</BODY> GQq2;%RrF
</HTML> lE /"
s@0#w*N
r6"t`M
HQ9+ PX+$Us
H 1SQ&mH/
U)N;=gr\
z[l17+v
INTERCAL ;+cZS=
PLEASE DO ,1 <- #13 w
J; y4
DO ,1 SUB #1 <- #238 8$S$*[-a
DO ,1 SUB #2 <- #112 <wa}A!fu
DO ,1 SUB #3 <- #112 i,,U D
DO ,1 SUB #4 <- #0 ;l"z4>kt7
DO ,1 SUB #5 <- #64 ,myl9s
DO ,1 SUB #6 <- #238 =Bl#CE)X
DO ,1 SUB #7 <- #26 Drc\$<9c@
DO ,1 SUB #8 <- #248 iYR8sg[' #
DO ,1 SUB #9 <- #168 PbCXcs
DO ,1 SUB #10 <- #24 AfyEFnY
DO ,1 SUB #11 <- #16 )0YMi!&j`
DO ,1 SUB #12 <- #158 8MV=?
DO ,1 SUB #13 <- #52 'xhX\?mD
PLEASE READ OUT ,1 a>6!?:Rj
PLEASE GIVE UP *SLv$A
FSC74N/
s@Y0"
Java Q@nxGm
public class Hello 1jO/"d.8n
{ Xrc0RWXB8
public static void main(String[] args) 7\<#z|
{ c)+IX;q-C
System.out.println("Hello, world!"); PO1sVP.S
} uee2WGD
} \f05(ld
zN0^FXGD
Y}Y2Vx
JSP !'[f!vsyM{
<% [*Wq6n
out.print("Hello, world!"); Jr|"` f%V
%> vQ$ FMKz7
$s5LzJn
V_$ BZm%8J
MIXAL RKx"
}<#+
TERM EQU 19 the MIX console device number YOd0dKe
ORIG 1000 start address 8 W79
START OUT MSG(TERM) output data at address MSG ]`b/_LJN$F
HLT halt execution M1-n
MSG ALF "MIXAL" Y7{IF X
ALF " HELL" K]1A,Q
ALF "O WOR" mY+Jju1
ALF "LD " P?\ IlziCB
END START end of the program q{nNWvL
/q0[T{Wz$
M|w;7P}
Nuva ]%!:'#
<..直接输出..> M| :wC
Hello, world! _Y?p =;
nn5tOV}QE
<..或者..> %A|9=x*
F2saGpGH
<. R%=u<O
// 不带换行 1kEXTs=,
? "Hello, world!" IVjH.BzH9
x* ?-KS|
// 或者 !?,7Cu.5#6
|@`F!bnLr
// 带换行 d,tGW
?? 'Hello, world!' %wzDBsX
.> _
fJ5z
8M<q-sn4B
d="Oge8
OCaml Dp3&@M"^yY
let main () = <l opk('7
print_endline "Hello world!";; P-o/ax
/zJDQ'k0
US[{
Q
Pascal 2~h! ouleY
program Hello; fkbHfBp[(A
begin QpxRYv
writeln('Hello, world!'); % put=I
end. >slD.rb]
hd0d
gc
4jbqV
Perl M=:!d$c
#!/usr/local/bin/perl T a8;
print "Hello, world!\n"; -.<fGhmU
+m8CN(c
E!nEB(FD
PHP 7}>Zq`]~
<?php j}t"M|`
print("Hello, world!"); _IYd^c
?> T#KF@8'-
<#/r.}.x
(&t741DN|
Pike HI&N&a9C
#!/usr/local/bin/pike xMsSZ{j%5
int main() (cAWT,
{ 50kjX}
write("Hello, world!\n"); tUU`R{=(
return 0; 8S/SXyS
} u5zL;C3O
UVa:~c$U4
&.^(,pt
PL/I 5ar2Y$bY
Test: procedure options(main); r*_z<^d
declare My_String char(20) varying initialize('Hello, world!'); Bp&7:snGt
put skip list(My_String); mqe83 k%
end Test; r:;nv D
2MY-9(no
iXLODuI
Prolog kd55y
goal sT8(f=^)8F
write("hello,world!"). T6mbGE*IeE
Uao8#<CkvJ
0i/!by{@
Python jEU`ko_
#!/usr/local/bin/python Xf
0)i
print "Hello, world!" X%JQ_Z
3<F\5|
', +YWlW
REXX st4z+$L
say "Hello, world!" ufl[sj%^|
=c/jS
?|,dHqh{nM
Ruby (dvsGYT|.
#!/usr/bin/ruby NSs"I]
print "Hello, world!\n" v\lhbpk
Hreu3N
V Ioqn$
Scheme R%Xhdcn7
(display "Hello, world!") ;|yd}q=p
(newline) X;:qnnO
P'}WmE'B}F
2:[
-
sed (需要至少一行输入) ]cQYSN7!SY
sed -ne '1s/.*/Hello, world!/p' ({&