“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。 MNsgD3
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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》。 4Awl
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以下是用不同语言写成的Hello World程序的几个例子: /?
HLEX
Ada ryoD 1OE
with Ada.Text_Io; use Ada.Text_Io; .g95E<bd
procedure Hello is FR 1se
begin `1)n2<B
Put_Line ("Hello, world!"); 7%Ii:5Bp
end Hello; X4:SH>U!
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+#0,2wR#
汇编语言 &&{_T4
[[9XqD]
x86 CPU,DOS,TASM ao.v]6a
MODEL SMALL nXcOFU
IDEAL d"JI4)%
STACK 100H ys$X!Ep
<bxp/#6D
DATASEG +UC-
HW DB 'Hello, world!$' *[[TDduh&
<)$b=z
CODESEG 7"Iagrgw
MOV AX, @data vaUUesytt
MOV DS, AX 0`l(c
MOV DX, OFFSET HW 'CO3b,
MOV AH, 09H Qg4g(0E@
INT 21H @+
U++
MOV AX, 4C00H :6X?EbXhK
INT 21H L
BP|
END 0'.7dzz
U `<?~Bz
\%011I4
x86 CPU,GNU/Linux,NASM Fl&Z}&5p
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ^\zf8kPti
;Enter this into "hello.asm" then type: Um\_G@
;"nasm -f elf hello.asm" 9a0ibN6m
;"ld hello.o -o hello" ISl-W1u}
;"./hello" |qTS{qQh{L
Rt10:9Kz$
section .data ;data section declaration B\}B
H
msg db 'Hello World!',0AH U:o(%dk
len equ $-msg ;string length V57tn6>b
&fYV FRVkq
section .text ;code section declaration wth*H$iF
global _start ;entry point (start of execution) 1P+Te,I
_start: mov edx,len ;string length SH${ \BKup
mov ecx,msg ;string start v&i,}p^M5
mov ebx,1 ;file handle: stdout T1Y_Jf*KJ
mov eax,4 ;sys_write ^-i<TJ
int 80h ;kernel system call ^`XTs!.
k+FiW3-
mov ebx,0 ;return value )w3HC($g
mov eax,1 ;sys_exit 5L8 )w5
int 80h ;kernel system call zL,B?
Us*"g{PQ
EZvf\s>LT
x86 CPU,Windows,MASM32 qkbxa?&X
.386 IrZ!.5%tV
.model flat,stdcall P<WCW3!JZ
option casemap:none *n h.&Mv|
;Include 文件定义 zgh~P^Z
include windows.inc K9(Su`zr
include user32.inc ^sA"&Vdr^
includelib user32.lib ,S7g=(27(
include kernel32.inc KDzTe9
includelib kernel32.lib 2XN];,{
;数据段 R|h(SXa
.data BE]PM
n I
szCaption db 'A MessageBox!',0 g`BtG
szText db 'Hello,world!',0 )+S^{tt
;代码段 1SYBq,[])
.code 9L^:N)-
start: +Y
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK )mVpJYt;
invoke ExitProcess,NULL a9 CK4Kg
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> P<<hg3@
end start NlnmeTLO5
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AWK V!94I2%#x
BEGIN { print "Hello, world!" } 4dwG6-
K^'NG!
Os# V=P
BASIC J_=42aHO
传统版BASIC(例如GWBASIC): 'U"ub2j
T@ecWRro
10 PRINT "Hello, world!" gZD,#D.hR
20 END dUg| {l
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或在提示符输入: {tlt5p!4
<!r0[bKz@
?"Hello, world!":END h7h[!>
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现代版BASIC(例如Quick BASIC): i$ :\,
f4TNy^-
Print "Hello, world!" b\l +S2
sZ!/uN!6
以下的语句在Quick BASIC中同样有效: CI };$4W~
hnbF}AD
? "Hello,world!" C/{tvY /o
eZ^-gk?
aF~ 0\XC
BCPL {IlX@qWr
GET "LIBHDR" DWQ@]\
(K(6`~
LET START () BE JWuF ?<+k
$( >sL"HyY#H
WRITES ("Hello, world!*N") `V1D&}H+G
$) 'kz[Gh*8
lB0: 4cIj
UvtSNP&/2d
Befunge 9Xv>FVG!
"!dlrow olleH">v Jn>6y:s
, Jt3]'Nr04@
^_@ eaI!}#>R+
P{-f./(JD
UF)4K3X
Brainfuck #l!Sz247
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<
7Q>*]
+++++++++++++++.>.+++.------.--------.>+.>. )Bq~1M 2
OEN!~-u
*Q@%<R
C ^mu?V-4
#include <stdio.h> >lRa},5(
HJn
int main(void) Z,~EH
{ *Hnk,?kPq
printf("Hello, world!\n"); FYe(SV(9
return 0; +H7lkbW
} S]7RGzFe
x[,HK{U|t
3\xvy{r
C++ PV*U4aP
#include <iostream> nzdJ*C
8p?Fql}F[
int main() %z(nZ%,Z
{ -}B&>w,5
std::cout << "Hello, world!" << std::endl; @} 61D
return 0; F .(zS(q
} ;eG,T-:
AC$:.KLI
q5irKT*Hs
C++/CLI pL{h1^O}
int main() J 1?)z+t9~
{ PN!NB.
System::Console::WriteLine("Hello, world!"); lJfn3
} ="$9
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2\Vzfca
}K!)Z}8
C# (C Sharp) b-1cA1#_cP
class HelloWorldApp z]NzLz9VfL
{ `|1#Vuk
public static void Main() |g3a1El
{ >&|C
E2'
System.Console.WriteLine("Hello, world!"); _7AR2
} BnLM ;5
>
} 5/:BtlFx
VPB,8zb]
6d RxfbL
COBOL F9sVMV
IDENTIFICATION DIVISION. h|_E>6d)
PROGRAM-ID. HELLO-WORLD. R).?lnS
Jv*(DFt!v
ENVIRONMENT DIVISION. [dK5kO
GgoPwl#{
DATA DIVISION. Xgge_`T9
] Fx9!S
PROCEDURE DIVISION. ,~@Nhd~k
DISPLAY "Hello, world!". 5$,dpLbL
STOP RUN. hcvWf\4'#q
>i> %@
jXBAo
Common Lisp r>=)Y32Q
(format t "Hello world!~%") #PzRhanX
HMQi:s7%
akuV9S
DOS批处理 i )Hjmf3
@echo off >Cb[
echo "Hello, world!" Vf67gux
4,o|6H
8._
A[{.f
Eiffel L#Mul&r3x0
class HELLO_WORLD YxEc(a"
LRqBP|bjCD
creation U2=PmS P
make t;7 tuq
feature (p2jigP7a[
make is XY[uyR4Z
local e12.suv
io:BASIC_IO yG)zrRU
do S}q6CG7 u
!!io Y <'T;@
io.put_string("%N Hello, world!") 6!|-,t><
end -- make 2]Nc@wX`p
end -- class HELLO_WORLD CS;bm`8a
f$G{7%9*
jl;%?bx
Erlang STDT]3.
-module(hello). '!)|;qe
-export([hello_world/0]). iWbrX1
I+
[NE:$@
hello_world() -> io:fwrite("Hello, World!\n"). _S4 3_hW
5]/i[T_
bk@F/KqL
Forth <,%qt_
!
." Hello, world!" CR W}<'Y@[,
lg)jc3
(mHCK5
Fortran 481SDG[b
WRITE(*,10) dqU
bJc]
10 FORMAT('Hello, World!') _5F8F4QY`
STOP 0XCtw6
END lx8@;9fLy
UenB4
xn49[T
HTML p`@7hf|hm
<HTML> |K(j}^1k
<HEAD> xFU*,Y
<TITLE> Hello World! </TITLE> kY8aK8M
</HEAD> /Ulv/Thl
<BODY> 4ZY0!'be-R
<p>Hello World!</p> 1l$c*STK
</BODY> :Ogt{t
</HTML> #&JhA2]q
).[Mnt/Ft
~J}{'l1{yf
HQ9+ C]ev"Am_)
H W7k\j&x
y\]~S2}G
"0JG96&\
INTERCAL wAC*D=Qj
PLEASE DO ,1 <- #13 bLrC_
DO ,1 SUB #1 <- #238 2f'3Vjp~G
DO ,1 SUB #2 <- #112 iElE-g@Ws
DO ,1 SUB #3 <- #112 #7!P3j
DO ,1 SUB #4 <- #0 ? Xb8B5
DO ,1 SUB #5 <- #64 j]uL9\>
DO ,1 SUB #6 <- #238 r+T@WvS%W
DO ,1 SUB #7 <- #26 T%
DO ,1 SUB #8 <- #248 ys+ AY^/
DO ,1 SUB #9 <- #168 '+6H= Qn
DO ,1 SUB #10 <- #24 1]wx Ru
DO ,1 SUB #11 <- #16 %SW"{GnO^
DO ,1 SUB #12 <- #158 pIKQx5;
DO ,1 SUB #13 <- #52 p<5ED\;N;
PLEASE READ OUT ,1 XG]ltSOy
PLEASE GIVE UP M=Y}w?
DH(Qmd
\ /(;LHWQ
Java DYS|"tSk
public class Hello A=LyN$%
{ =+K2`=y;WF
public static void main(String[] args) zmV5k
{ VqzcTr]_
System.out.println("Hello, world!"); L0\97AF
}
0G-M.s}A
} Jx#r
`Zn2Vx
g`6_Ao8
JSP $3aq+w:
<% qJY'"_Q{
out.print("Hello, world!"); *>x~`
%> q8U*
RP}.Ei
}pP<+U
MIXAL 9G7lPK
TERM EQU 19 the MIX console device number +8tdAw
ORIG 1000 start address 86[/NTD<-
START OUT MSG(TERM) output data at address MSG W2CCLq1(
HLT halt execution mez )G|
MSG ALF "MIXAL" [ugBVnma
ALF " HELL" fmuAX w>
ALF "O WOR" !+qy~h
ALF "LD " b2x8t7%O
END START end of the program FBn`sS8hH
Ep/kb-~-
p~ `f.q$'
Nuva cVrses^yE
<..直接输出..> e0i&?m
Hello, world! w Phs1rL
?nW K s
<..或者..> xHs8']*\
eGZ{%\PH<
<. a@[y)xa$Z
// 不带换行 !!NVx\a
? "Hello, world!" O gQE1{C
Y9h~ hD
// 或者 x1\a_Kt
<S*o}:iB
// 带换行 GEr]zMYG[A
?? 'Hello, world!'
'g<0MOq{
.> seT?:PCA
&"^,Ubfcn"
m"MTw@}SJ;
OCaml 9(.P2yO
let main () = Za+26#g
print_endline "Hello world!";; -"u9s[L{
; Drt4fOxX
[I*BEJ;W'
Pascal .Rq|F
program Hello; /\=syl
begin L;a>J
writeln('Hello, world!'); -]1F]d
end. }@-4*5P3
/b *VFA/75
6qsT/
Perl JJL#Y
#!/usr/local/bin/perl h= uv4&
print "Hello, world!\n"; * A B
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dpHK~n j\_
PHP W~ 6ii\
<?php MV"aO@
print("Hello, world!"); lNtZd?=>
?> n:c)R8X]
a8K"Z-LlQ
O=wA/T=w?
Pike mT8")J|2
#!/usr/local/bin/pike :Gyv%>.
int main() $7q'Be@{
{ \IZfp=On
write("Hello, world!\n"); pgK)
return 0; Xne{:!btw
} KsZXdM/
+we3BE.
p9*#{~
PL/I jPG&Ypm1
Test: procedure options(main); p #:.,;
declare My_String char(20) varying initialize('Hello, world!'); !o.l:Mr
put skip list(My_String); *M*:3v
0
end Test; vO#4$,
(/J$2V5-
86J7%;^Xa
Prolog E}S)uI,gn
goal I 2JE@?
write("hello,world!"). ?(Dk{-:T'
RC5b'+E