“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。 x2 s%qZ#
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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》。 _.E y_K_1
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以下是用不同语言写成的Hello World程序的几个例子: vrS)VJg`
Ada AixQR[Ul*c
with Ada.Text_Io; use Ada.Text_Io; ,34|_
procedure Hello is iG:9uDY
begin 6CK WKc
Put_Line ("Hello, world!"); H|E{n/g
end Hello; |2!!>1k
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i\4Q v"%
汇编语言 pHW
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5IK -V)
x86 CPU,DOS,TASM uVO*@Kj+
MODEL SMALL 3$]SP1Mc(
IDEAL 1x\Vz\
STACK 100H GrwoV~
fxW,S
DATASEG 50 s)5G#
HW DB 'Hello, world!$' s_`PPl_D$K
WK{{U$:$
CODESEG {l /]+8G^
MOV AX, @data A5d(L4Q]a(
MOV DS, AX [dszz7/L
MOV DX, OFFSET HW sd (I@
&y
MOV AH, 09H -c^/k_n
INT 21H - EwtO4vLJ
MOV AX, 4C00H P)7_RE*gY
INT 21H IW48Sg
END "E? 8.`T
)gO=5_^u*o
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x86 CPU,GNU/Linux,NASM IaxzkX_48
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). .EOHkhn
;Enter this into "hello.asm" then type: XHKVs
;"nasm -f elf hello.asm" (kECV8)2
;"ld hello.o -o hello" ZBDEE+8e
;"./hello" hq5=>p
gq$]jWtCD
section .data ;data section declaration 9J"Y
msg db 'Hello World!',0AH r#Pkhut
len equ $-msg ;string length 410WWR&4_
8J&K_JC^
section .text ;code section declaration U}c[oA
global _start ;entry point (start of execution) un+U_|>c
_start: mov edx,len ;string length lX)RG*FlTC
mov ecx,msg ;string start c$<7&{Pb
mov ebx,1 ;file handle: stdout k'_p*H
mov eax,4 ;sys_write ,n')3r
int 80h ;kernel system call FZ!KZ!p
#MZ0Sd8]&
mov ebx,0 ;return value @$5!
mov eax,1 ;sys_exit :+1S+w
int 80h ;kernel system call RETq S
C:$12{I?*
mY+.(N7m
x86 CPU,Windows,MASM32 'O#,;n
.386 eRlJ
.model flat,stdcall n&?]GyQ
option casemap:none Z19d Ted33
;Include 文件定义 UOWOOdWSB
include windows.inc *{5L*\AZ
include user32.inc X%+FM]
includelib user32.lib $,vZX u|Qw
include kernel32.inc {H$F!}a
includelib kernel32.lib !fFmQ\|)4S
;数据段 "}uPz4
.data gE,i
Cx
szCaption db 'A MessageBox!',0 b";w\H
szText db 'Hello,world!',0 48.2_H<
;代码段 8T5s6EmIOW
.code {FR#je
start: oR.KtS$uh
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK d2w;d&2S
invoke ExitProcess,NULL AJRfl% 3
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Z`fm;7NiVG
end start Qp{rAAC:
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oa:GGW4Q
AWK AT^?PD_
BEGIN { print "Hello, world!" } &i`\`6 q
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Dk#$PjcRE
BASIC Jo1=C.V`Y
传统版BASIC(例如GWBASIC): \ H#zRSbZ
cw3JSz9
10 PRINT "Hello, world!" "FC;k
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20 END T-=sC=sS,
q9-=>
或在提示符输入: )Cuc]>SC
j)Z3m @Ii5
?"Hello, world!":END ~+VIELU<%
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现代版BASIC(例如Quick BASIC): Ez^U1KKOE7
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Print "Hello, world!" saOXbt(&
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以下的语句在Quick BASIC中同样有效: XVi?-/2
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? "Hello,world!" I71kFtvcy*
clz6;P
*Yk3y-
BCPL w{[OtGIi3
GET "LIBHDR" pCSR^ua>
EEQW$W1@
LET START () BE /}?"O~5M"
$(
R1'bB"$
WRITES ("Hello, world!*N") #!\g5 ')mC
$) wK@k}d
Mn(:qQo^&`
^ N]u
Befunge oDp!^G2A"
"!dlrow olleH">v clQN@1] M
, 7O{c>@\
^_@ /?l@7
9)p VDS
8W?/Sg`
Brainfuck bet?5Dk
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< #RK?3?wcr
+++++++++++++++.>.+++.------.--------.>+.>. |+//pGx
(3C6'Wt
3O<:eS~
C `[V]xP%V
#include <stdio.h> x|l[fdm5
))}w;w
int main(void) )*N]Q
{ oB8u[!
printf("Hello, world!\n"); iXtar;%
return 0; |`9POl=
} =LHE_ AA
BnH<-n_
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i8
C++ ml7]sN(
#include <iostream> 5nIm7vlQm
$L>tV='
int main() 8$<jd^w
{ fU_itb(
std::cout << "Hello, world!" << std::endl; [QA@XBy6
return 0; 0qSd#jO
} i'|rx2]e
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hKb-l`KO
C++/CLI me@4lHBR
int main() X
b-q:{r1h
{ A P><l@
System::Console::WriteLine("Hello, world!"); g"|QI=&_J
} `,~I*}T>5W
Kx?3 ]
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C# (C Sharp) D`3m%O(?
class HelloWorldApp {:c*-+?
{ xn(lkQ6Fm
public static void Main() w\KO1 Ob
{ 92+LY]jS
System.Console.WriteLine("Hello, world!");
?:OL8&0
} TFWV(<
} XRVE8v+
/02|b}{
xuQ$67F`;z
COBOL A7DEAT))4L
IDENTIFICATION DIVISION. u|ia
PROGRAM-ID. HELLO-WORLD. xlF$PpRNM
h9c54Ux
ENVIRONMENT DIVISION. o~H4<ayy
8D[P*?O
DATA DIVISION. N~L3
9
Be"D0=<
PROCEDURE DIVISION. =mYY8c Yl
DISPLAY "Hello, world!". )s1W)J?8
STOP RUN. tsR\cO~/
F>E'/r*
<*0^X%Vf\
Common Lisp ,tv
P"@d
(format t "Hello world!~%") fk,[`n+
.BJ;}
ac6Lv}w_
DOS批处理 Y~( #_K
@echo off U'@eUY(Ov$
echo "Hello, world!" y
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8r(S=dA
c?5e| dZz
Eiffel L=ZKY
class HELLO_WORLD K.G}*uy
F`-|@k
creation cf?*6q?n
make Q~<$'j
feature g76l@QYIU
make is J2 {?P
cs
local UN[rW0*
io:BASIC_IO "jly[M}C
do ae( o:G
!!io H2`aw3
io.put_string("%N Hello, world!") xM}lX(V!w
end -- make Alaq![7MDP
end -- class HELLO_WORLD (D F{l?4x-
Rok`}t
`sOCJ|rc5
Erlang !q;EC`i#
-module(hello). LL@VR#n"V
-export([hello_world/0]). J4!Om&\@
iZ2|/hnw
hello_world() -> io:fwrite("Hello, World!\n"). &S9Sl
=FQ]eb*
,2S w6u
Forth >Du5B&41
." Hello, world!" CR C4e3Itc9X
$EHAHNL?Lx
d-nqV5
Fortran W*iPseXq
WRITE(*,10) x0B|CO
10 FORMAT('Hello, World!') ;o }pRC
STOP K4NB#
END #FKo:id`K
H5uWI
6O8'T`F[
HTML l/0TNOA
<HTML> }6b =2Z}
<HEAD> ;*ebq'D([
<TITLE> Hello World! </TITLE> U,S&"`a
</HEAD> :{?8rA5
<BODY> cN_e0;*Ua
<p>Hello World!</p> \xJTsdd
</BODY> &*iar+vr
</HTML> pfsRV]
#!0le:_
\TqKm
HQ9+ R}7>*&S:
H 289teU
VE1 B"s</
RGh`=D/yE
INTERCAL M0g!"0?
PLEASE DO ,1 <- #13 ~E&drl\
DO ,1 SUB #1 <- #238 Wo&10S w
DO ,1 SUB #2 <- #112 /Hb'3,jN
DO ,1 SUB #3 <- #112 g-j`Ex%
DO ,1 SUB #4 <- #0 7c$;-O
DO ,1 SUB #5 <- #64 v[WbQ5AND
DO ,1 SUB #6 <- #238 )$V}tr!
DO ,1 SUB #7 <- #26 5#/"0:2
DO ,1 SUB #8 <- #248 9Y&,dBj+
DO ,1 SUB #9 <- #168 l@7Xgsey
DO ,1 SUB #10 <- #24 SFAh(+t
DO ,1 SUB #11 <- #16 !~PLW] Z4
DO ,1 SUB #12 <- #158 1^rODfY 0
DO ,1 SUB #13 <- #52 z 3)pvX5
PLEASE READ OUT ,1 ?zp@HSa9
PLEASE GIVE UP xo/[,rR
:c%vl$
//*>p
Java C*Avu
public class Hello ~jMdM~}
{ wZN<Og+;
public static void main(String[] args) 2ijw g~_@
{ !/O c)Yk
System.out.println("Hello, world!"); qYZ\<h^
} j;@7V4'
} l<0BMw S8
!m(5N4:vV
z17
JSP i)=!U>B_0
<% >J>4g;Y
out.print("Hello, world!"); wjYwQ= y5
%> YOo?.[}@
!Ziq^o.
\NwL #bQ~
MIXAL mle"!*
TERM EQU 19 the MIX console device number [I:D\)$<
ORIG 1000 start address .n]P6t
START OUT MSG(TERM) output data at address MSG NidG|Yg~Z
HLT halt execution 8$}1|"F
MSG ALF "MIXAL" :9!?${4R
ALF " HELL" ]p>6r*/nw
ALF "O WOR" 6'd=% V
ALF "LD " JK0L&t<
END START end of the program {#YGor|
$>zLa_cn|
fwB+f`w`
Nuva 13(JW
<..直接输出..> AA34JVm]
Hello, world! RbUBKMZU
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<..或者..> 1!<k-vt
}.w@.
S"
<. $$+6=r}
// 不带换行 ukBj@.~
? "Hello, world!" e(E6 t_
<EKDP>,~
// 或者 >!:uVS
+FiM?,G
// 带换行 /N(L52mz
?? 'Hello, world!' diN5*CF'~
.> )u~LzE]{_
Xao
0cb.R
:=x-b3U
OCaml = BW>jD
let main () = ) 9h5a+Z
print_endline "Hello world!";; ':6!f
KZ^W@*`D
'#d`K.;_b.
Pascal V4p4m@z^u
program Hello; hKP!;R
begin {X$8yy2zC5
writeln('Hello, world!'); 16=tHo8|
end. Z"rrbN1
j<w";I&Diz
Xi3:Ok6FZ
Perl A\J|eSG'$
#!/usr/local/bin/perl !DFT}eu
print "Hello, world!\n"; KsI[
((L=1]w
"1P8[
PHP gE8p**LT+
<?php VE{[52
print("Hello, world!"); yZFm<_9>
?> [U[saR\
#xZ7%
\5.36Se
Pike 3D>syf
#!/usr/local/bin/pike LO{{3No
int main() w7}m
T3p,)
{ "F%w{bf
write("Hello, world!\n"); ta\AiHm
return 0; @#[<5ld
} tpp. 9
=9@{U2 =l
3n-~+2l
PL/I *cn,[
Test: procedure options(main); ],{b&\
declare My_String char(20) varying initialize('Hello, world!'); dbF?#s~u
put skip list(My_String); p<IMWe'tP
end Test; Om`VQ?
?:F#WDD
Z^w11}
Prolog U6V+jD}L]
goal R/5aIh
write("hello,world!"). &`hx
M]PH1 2Ob
"@IrBi6
Python "bZ{W(h
#!/usr/local/bin/python t3%[C;@wB
print "Hello, world!" FTvFtdY
^b)8l
g/Q hI
REXX Cisv**9
say "Hello, world!" Ul#||B .c{
@C7iflo6
ht _fbh(l
Ruby rMkoE7n
#!/usr/bin/ruby --*Jv"/0
print "Hello, world!\n" t,|`#6 Ft
Xk=bb267
It.G-(
Scheme =8BMCedH|
(display "Hello, world!") $S{B{FK
(newline) /7Z5_q_
.*+?]
9Qja|;
sed (需要至少一行输入) f
S-(Kmh
sed -ne '1s/.*/Hello, world!/p' L|hsGm\
c\.Hs9T >
*`D(drnT{
Smalltalk $*EK
v'g[n
Transcript show: 'Hello, world!' d$~q
R7YLI1ov
/.!ytHw8
SNOBOL LliOhr4
OUTPUT = "Hello, world!" 5P{PBd}glp
END rXR=fj= 2
NYopt?Xg
B?d^JWTZ
SQL !Cse,6/Z
create table MESSAGE (TEXT char(15)); m,UMb#7Y
insert into MESSAGE (TEXT) values ('Hello, world!'); 20glz(
select TEXT from MESSAGE; t#
cm|
drop table MESSAGE; yhnhORSY;
+ ;u<tA
)+
}\NCFh
Tcl D*!p8J8Ku
#!/usr/local/bin/tcl :H/CiN
puts "Hello, world!" daamP$h9
#gjhs"$~
SymBb}5
TScript bF'Y.+"dr
? "Hello, world!" C4vmgl&
3|1ug92
Jo%5 NXts4
Turing .~J}80a/
put "Hello, world!" ""-#b^DQ
@2H"8KX
a "*DJ&