“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。 aDl,
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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》。 f;Bfh3
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以下是用不同语言写成的Hello World程序的几个例子: R=amKLD?
Ada 4-+ozC{
with Ada.Text_Io; use Ada.Text_Io; _:gGD8
procedure Hello is [%84L@:h
begin $EQT"ZX>%i
Put_Line ("Hello, world!"); [|[sYo
end Hello; mfngbFa1
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XiRT|%j
汇编语言 ?z@v3(b[
% O&m#)|
x86 CPU,DOS,TASM sUbz)BS#.
MODEL SMALL :PD`PgQ
IDEAL Z<N&UFw7QJ
STACK 100H P~\a)Szy
WS1&3mOd
DATASEG prlyaq;4
HW DB 'Hello, world!$' Wj4^W<IO
! 2Xr~u7a
CODESEG ;<kZfx
MOV AX, @data A3MZxu=':3
MOV DS, AX NF/Ti5y
MOV DX, OFFSET HW [W9e>Nsp0
MOV AH, 09H V5u}C-o
INT 21H MvZ+n
MOV AX, 4C00H M9Nk=s! 3
INT 21H qIDWl{b<
END hY.e [+
UH 47e
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x86 CPU,GNU/Linux,NASM E/~"j
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). !dyxE'T2
;Enter this into "hello.asm" then type: pkXfsi-Nu
;"nasm -f elf hello.asm" Z6IJ o%s
;"ld hello.o -o hello" H~?*KcZ 0\
;"./hello" L}}=yh6r
29a_ZU7e6
section .data ;data section declaration hJw
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msg db 'Hello World!',0AH FQk_#BkK
len equ $-msg ;string length j<ABO")v
%tzN@
section .text ;code section declaration s;B
j7]
global _start ;entry point (start of execution) >'} Y1_S5
_start: mov edx,len ;string length [y|^P\D
mov ecx,msg ;string start T_@[k
mov ebx,1 ;file handle: stdout ;wJ7oj<
mov eax,4 ;sys_write smfG,TI
int 80h ;kernel system call !2zo]v4?
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mov ebx,0 ;return value c~gNH%1XN
mov eax,1 ;sys_exit 'v\1:zi
int 80h ;kernel system call 5JBB+g
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xvwD3.1
x86 CPU,Windows,MASM32 %[]"QbF?
.386 oLrkOn/aY
.model flat,stdcall xFBh?
option casemap:none ?G$Om
;Include 文件定义 SY%A"bC
include windows.inc cBz!U8(
include user32.inc a>o"^%x
includelib user32.lib KTG:I@|C
include kernel32.inc '}jf#C1$c
includelib kernel32.lib z5XYpi_;[
;数据段 _M8G3QOx
.data Z/2,al\
szCaption db 'A MessageBox!',0 3]O`[P,*%
szText db 'Hello,world!',0 ,f8}q]FTA
;代码段 /S:w&5e
.code )XLj[6j0
start: >Z#uFt0<Pm
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK )-bD2YA{
invoke ExitProcess,NULL 1YOg1 n+k
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> $}qDV>
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end start %f3c7\=C
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5f;n<EPy
AWK FU_fCL8yA
BEGIN { print "Hello, world!" } L;/9L[s,
LP.HS'M~u
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BASIC 2y3?!^$
传统版BASIC(例如GWBASIC): O&`U5w
x96qd%l/
10 PRINT "Hello, world!" f{)+-8
20 END 9#v-2QY
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或在提示符输入: ppAmN0=G
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?"Hello, world!":END $ q%mu
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现代版BASIC(例如Quick BASIC): a?5WKO
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Print "Hello, world!" 4bP13f
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以下的语句在Quick BASIC中同样有效: 8';m)Jc
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? "Hello,world!" &Fw[YGJayz
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wk" l[cH>
BCPL 3(1]FKZtt
GET "LIBHDR" b6 $,Xh
h S4.3]ei
LET START () BE dZPW2yf
$( x>}B#
WRITES ("Hello, world!*N") )VNM/o%Q
$) ARP KzF`Wq
z)}3**3'y
+`ai1-vw
Befunge he"L*p*H
"!dlrow olleH">v js~tKUvg
, Ve)ClH/DW
^_@ YPu9Q
?N:B
{S G*
Brainfuck *D2Nm9sl
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< t5xb"F
+++++++++++++++.>.+++.------.--------.>+.>. Rv98\VD"
85'nXYN{d
Y=r!2u6r~
C djWcbC=g_
#include <stdio.h> )D;*DUtMVm
'iJDWxCD
int main(void) =/[ltUKs:a
{ JjQ8|En
printf("Hello, world!\n"); :4|M
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return 0; S@x}QQ|.
} UEzsDJu
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R,%_deV\(
C++ YydA6IK4
#include <iostream> 7AFE-'S
WZq,()h
int main() 98GlhogWt
{ FKC\VF
std::cout << "Hello, world!" << std::endl; ~/2g)IS
return 0; `ruNA>M
} _3/ec]1
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5k]XQxc6_
C++/CLI [u`6^TycP
int main() f-4.WW2FN
{ +td<{4oq8
System::Console::WriteLine("Hello, world!"); F+m[&MKL
} -IadHX}]t
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>L gVj$Z
C# (C Sharp) xRlYr# %
class HelloWorldApp /Y,r@D
{ F|Q H
public static void Main() 3V?817&6z
{ ) V36t{
System.Console.WriteLine("Hello, world!"); #Q}_e7t
} )n( Q
} UP2}q?4
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yYY Nu`
COBOL L;S}s, 2x
IDENTIFICATION DIVISION. ?n.)&ZIx0
PROGRAM-ID. HELLO-WORLD. *:g_'K"+
VevNG*
ENVIRONMENT DIVISION. Fi4UaJ3K
-p`L%xj\
DATA DIVISION. A?8\Y{FQ
}# Doy{T
PROCEDURE DIVISION. v8m`jxII64
DISPLAY "Hello, world!". C`QzT{6!
STOP RUN. iCP~O
:Xfn@>;3ui
&+01+-1hW
Common Lisp 6V1:qp/6
(format t "Hello world!~%") $e
}n
l'6d4
DZ
z\T Lsx
DOS批处理 ^z~~VBv
@echo off /ylc*3e'4
echo "Hello, world!" 9[VxskEh
gzf-)J
Qqc]aVRF
Eiffel W\8Ln>
class HELLO_WORLD Z(e^ iH
?qmp_2:WU
creation jnJZ#=)
make :U'Cor
H
feature $shp(T,q
make is X:EEPGE
local 7C7>y/uS
io:BASIC_IO Q9c)k{QZ
do #H~_K}Ks
!!io O,s. D,S
io.put_string("%N Hello, world!") P|xG\3@Z
end -- make O)]v;9oER
end -- class HELLO_WORLD UV AJxqz%}
/[=E0_t+
BI/&dKM
Erlang I4=Xb^Ux
-module(hello). @0NJ{
-export([hello_world/0]).
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oehaQ#e
hello_world() -> io:fwrite("Hello, World!\n"). I4t*?
D#Kuo$
fThgK;Qy'U
Forth n?xTkkr0
." Hello, world!" CR 8 lT{1ro
},@``&e
5M F#&v
Fortran 94/BG0
WRITE(*,10) )8,|-o=
10 FORMAT('Hello, World!') eSfnB_@x2
STOP Y@uh[aS!
END 4w93}t.z
Z[?mc|*x
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HTML h4)Bs\==mT
<HTML> 7TX2&kMoc
<HEAD> xZ .!d.rn
<TITLE> Hello World! </TITLE> Bp?
</HEAD> &7>zURv
<BODY> 56}X/u
<p>Hello World!</p> $B (kZ
</BODY> r!GW=u'
</HTML> 8b(!k FxD
N( Oyi
"_1)CDqP
HQ9+ vFv3'b$;G
H ]a'99^?\
zjl!9M!
W7sn+g\
INTERCAL [?0d~Q(R#
PLEASE DO ,1 <- #13 i|WQ0fD
DO ,1 SUB #1 <- #238 4hs)b
DO ,1 SUB #2 <- #112 Fhf<T`
DO ,1 SUB #3 <- #112 EGVM)ur
DO ,1 SUB #4 <- #0 eWs&J24
DO ,1 SUB #5 <- #64 P8Qyhc
DO ,1 SUB #6 <- #238 K.~q+IYP[
DO ,1 SUB #7 <- #26 3Q^fVn$tk
DO ,1 SUB #8 <- #248 Na{Y}0=^y
DO ,1 SUB #9 <- #168 L2UsqVU
DO ,1 SUB #10 <- #24 >ut" OL9J
DO ,1 SUB #11 <- #16 }baR5v
DO ,1 SUB #12 <- #158 ac{?+]8}
DO ,1 SUB #13 <- #52 ?)D^~/
A
PLEASE READ OUT ,1 b KtD"JG\
PLEASE GIVE UP 6gL-OJNo
iUi>y.}"P
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Java Z4b||
public class Hello }<a^</s
{ Smw QET<H
public static void main(String[] args) h^UKT`9vt
{ zi@]83SS#
System.out.println("Hello, world!"); cVnJ^*Z
} qet>1<
} 8^/I>0EZ
sgUud_r)4
WJH\~<{mP
JSP !]yO^Ob.E
<% c2nKPEX&5
out.print("Hello, world!"); zAzP,1$?
%> mHc>"^R
)kXhtjOl|
dt@P>rel
MIXAL MGS-4>Q#
TERM EQU 19 the MIX console device number Qn@Pd* DR
ORIG 1000 start address 'a6<ixgo0
START OUT MSG(TERM) output data at address MSG i%m"@7.kk
HLT halt execution Pz*_)N}j >
MSG ALF "MIXAL" DyJ.BQdk)
ALF " HELL" AlE8Xu9UB
ALF "O WOR" \_V-A f{6
ALF "LD " /P|fB]p
END START end of the program Fb`a~c~s
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t_^X$pL
Nuva Fb22p6r
<..直接输出..> Hmt^h(*/2
Hello, world! `{k"8#4:qA
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<..或者..> U1_@F$mq<
P262Q&.}d
<. H,fZ!8(A_)
// 不带换行 )L{ghy
? "Hello, world!" }/tf>?c
#'D"
'B
// 或者 eV:9y
C?v[Z]t
// 带换行 ZYU=\
?? 'Hello, world!' `*", <
.> 6tHO!`}1
M5nWVK7c
B~]5$-
OCaml Qd}m`YW-f$
let main () = VVH.2&`I
print_endline "Hello world!";; Unj.f>U
00v&lQBW
]^':Bmq
Pascal |F,R&<2
program Hello; ]H-S,lmV
begin %~L>1ShtU
writeln('Hello, world!'); AjcX N
end. MYJg8 '[j
m(RXJORI
*n"/a{6>
Perl z%MW!x
#!/usr/local/bin/perl 1XM^8 .;
print "Hello, world!\n"; |8mhp.7
Ya>oCr}K
Gj"7s8(/K|
PHP N\:.
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<?php O5$/55PI
print("Hello, world!"); 5`
Te\H
?> I2nF-JzD2a
g?-lk5
|f~@8|MQP+
Pike 3)-/`iy#
#!/usr/local/bin/pike j83p)ido
int main() I}Nd$P)>
{ G!K]W:m
write("Hello, world!\n"); hX`}Q4(k
return 0; )*4fzo
} dJT]/g
|D, +P
@d Jr/6Yx
PL/I nJ~drG}TD
Test: procedure options(main); ;"(foY"L
declare My_String char(20) varying initialize('Hello, world!'); Wu4Lxv]B4
put skip list(My_String); I%-
" |]$
end Test; t]7&\ihZi~
n6s}ww)
n1!?"m!
Prolog (Qa/EkE^*w
goal Cmc3k,t
write("hello,world!"). J7r|atSk
fS~;>n%R
/rUo{j
Python PaV-F_2
#!/usr/local/bin/python ,-7R(iMd
print "Hello, world!"
=-_B:d;
!\&