“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。 EN/t5d
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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》。 yk5K8D[tV
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以下是用不同语言写成的Hello World程序的几个例子: ;Sg.E8
Ada m0h,!
with Ada.Text_Io; use Ada.Text_Io; 52#6uBe
procedure Hello is }
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begin LA2/<:
Put_Line ("Hello, world!"); &hL2xx=
end Hello; (^g XO
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汇编语言 cqs.[0 z#B
7
wEv`5
x86 CPU,DOS,TASM puWMgvv
MODEL SMALL 6~W@$SP,F
IDEAL ~@-r
STACK 100H ybFxz
, u%V%
DATASEG <pHm=q/U
HW DB 'Hello, world!$' -gba&B+D"
z^&$6c_
CODESEG Tl[*(|/C
MOV AX, @data f#GMJ mCQs
MOV DS, AX |%F4`gz8KP
MOV DX, OFFSET HW 7D:rq 8$\
MOV AH, 09H 0pEM0M
INT 21H (&v|,.c^)1
MOV AX, 4C00H ly6zz|c5
INT 21H F|5Au>t
END oCI\yp@a
,5}w]6bCr
p19@to5l
x86 CPU,GNU/Linux,NASM TKsP#Dt/
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). >s"/uo
;Enter this into "hello.asm" then type: fvi0gE@bd
;"nasm -f elf hello.asm" 6\K\d_x
;"ld hello.o -o hello" Y[}A4`
;"./hello" );t+~YPS
CqZHs
9+e&
section .data ;data section declaration i+~BVb
msg db 'Hello World!',0AH Ab j7
len equ $-msg ;string length tQNrDp+
C3f\E: D)
section .text ;code section declaration 9=T;Dxn
global _start ;entry point (start of execution) w4TQ4
Y
_start: mov edx,len ;string length '2<r{
mov ecx,msg ;string start W
mov ebx,1 ;file handle: stdout (6a<{
mov eax,4 ;sys_write ?fq!BV
int 80h ;kernel system call u|AMqS
Zxqlhq/)
mov ebx,0 ;return value HKT, 5
mov eax,1 ;sys_exit ,i<cst)$u
int 80h ;kernel system call hf2bM
`d
.n YlYY'
Y&Fg2_\">
x86 CPU,Windows,MASM32 vS0 ii
.386 !-3;Qj}V
.model flat,stdcall Y\B6c^E)
option casemap:none $)o0{HsL+
;Include 文件定义 Mz2TwU_
include windows.inc .RFH@''
include user32.inc >8OY6wb
includelib user32.lib 5.&)hmpg
include kernel32.inc vGh>1U:
includelib kernel32.lib G'-#99wv.
;数据段 =G^'wwpv(
.data (g X8iKl
szCaption db 'A MessageBox!',0 a*.#Zgy:lK
szText db 'Hello,world!',0 7[qL~BT+
;代码段 qA`@~\qh"
.code \6?a
start: L;j++^p
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK KT<$E!@
invoke ExitProcess,NULL h{ix$Xn~
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> @d 7V@F0d
end start c$&({Z{1
YOGj__:
Ow4(1eE_
AWK Gvh"3|u?z
BEGIN { print "Hello, world!" } /P TRe5-7
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$S?gQN.e
BASIC <Ohi+a%6
传统版BASIC(例如GWBASIC): r#)1/`h
-6NoEmb)\'
10 PRINT "Hello, world!" `m<O!I"A
20 END W~D_+[P|_
,z/aT6M?H
或在提示符输入: u4SL:IH{D
EUcD[Rv
?"Hello, world!":END BPt? 3tC
wDW%v@
现代版BASIC(例如Quick BASIC): *w*>\ZhOm
-XCs?@8EQ
Print "Hello, world!" |%XTy7^a
SiX<tj#HH\
以下的语句在Quick BASIC中同样有效: ug2W{D
ycc G>%>r
? "Hello,world!" p2t04p!
H2Wlgt
C7NSmZ
BCPL z_ycH%p
GET "LIBHDR" 0: hv6Ge^
M;ADL|
LET START () BE ~:T@SrVI
$( 2m yxwA5
WRITES ("Hello, world!*N") [tfB*m5
$) OmBz'sp:
-NN=(p!<
*{fs{gFw9
Befunge b6f OHy
"!dlrow olleH">v I]e+5 E0
, MAFdJ+n#
^_@ -~~h1
+@3+WD
%wOkp`1-
Brainfuck yFDeYPZP
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Z)E)-2U$@
+++++++++++++++.>.+++.------.--------.>+.>. ,jis@]:
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C X=]utn
#include <stdio.h> 9N9&y^SmD
fuUtM_11
int main(void) .4WJk>g
{ #c@&mus
printf("Hello, world!\n"); \uPzj_kU6
return 0; 7mMGH(
} MukJ^h*V
a,RCK~GR
%hYgG;22
C++ MYy58N
#include <iostream> 4mo/MK&M:
PZ8,E{V
int main() LPt9+sauf1
{ oHx:["F
std::cout << "Hello, world!" << std::endl; L7 }nmP>aR
return 0; <L qJg
} BK%B[f*[OA
Dbn344s
ye$_=KARP
C++/CLI kpn|C 9r
int main() 9Tt%~m^
{ pK3A/ry<
System::Console::WriteLine("Hello, world!"); \~%+)a%%
} K}@rte
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8N'hG,
C# (C Sharp) +8//mrL_/
class HelloWorldApp %`5(SC].
{ JnBc@qnP6
public static void Main() )x/#sW%)
{ Zc~7R`v7}
System.Console.WriteLine("Hello, world!"); 8~C}0H
} }bS1M
} d0I s|Gs
}UW*[dCf>C
?{f6su@rW
COBOL gE\ ^ vaB
IDENTIFICATION DIVISION. '1b 1N5~
PROGRAM-ID. HELLO-WORLD. jC>ZMy8U)4
L4/ns@e
ENVIRONMENT DIVISION. n~yKq"^
Nz`8)Le
DATA DIVISION. "crR{OjE"
,#ZPg_x?1
PROCEDURE DIVISION. 9#:nlu9
DISPLAY "Hello, world!". 'xqyG XI
STOP RUN. ?Cf'IBpN
3/n?g7B
?Xypn#OPt
Common Lisp Y`ip.Nx
(format t "Hello world!~%") .-rz30xT
La1:WYt
|cY HH$
DOS批处理 G=17]>U
@echo off ;
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echo "Hello, world!" [#gm[@d,
?l6yLn5si^
.euAN8L
Eiffel }}TPu8Rl
class HELLO_WORLD /8qR7Z^HZ
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creation Z .gb'
make GCN-T1HvA2
feature Vp]7n!g4l
make is +-'F]?DN'
local R|qrK
io:BASIC_IO M{24MF
do g.9C>>tj
!!io _$>);qIP4
io.put_string("%N Hello, world!") aF?_V!#cT
end -- make Hu<]*(lK%
end -- class HELLO_WORLD I(~([F2
j_90iP^5:
*x2!N$b
Erlang jV*10kM<
-module(hello). L%v@|COQ3
-export([hello_world/0]). y{mt *VA4
e x Z/
hello_world() -> io:fwrite("Hello, World!\n"). GqCBD-@4v.
=H;n$ -P
]"V_`i7Z
Forth ZXQ5fBx
." Hello, world!" CR G>vK$W$f N
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n}Z%D-b$
Fortran Lf%3-P
WRITE(*,10) a%`Yz"<lQ
10 FORMAT('Hello, World!') ^x O](,H
STOP Y[7prjd
END _\+]/rY9o
UiV#w#&P
N/0aO^"V
HTML J8Wits]A]$
<HTML> QY)p![6Fj
<HEAD> SV t~pE+Y
<TITLE> Hello World! </TITLE> 3#,6(k4>
</HEAD> dM^EYW
<BODY> x*z[(0g!
<p>Hello World!</p> Jt]RU+TB
</BODY> Q|o$^D,
</HTML> :&
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kfas4mkc
N@PwC(
HQ9+ #>aq'47j
H &l2xh~L
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INTERCAL Rf4K Rhi
PLEASE DO ,1 <- #13 Fvk=6$d2
DO ,1 SUB #1 <- #238 _$$.5?4
DO ,1 SUB #2 <- #112 }w4OCN\1
DO ,1 SUB #3 <- #112 u=nd7:bv
DO ,1 SUB #4 <- #0 K.QSt
DO ,1 SUB #5 <- #64 zl8M<z1`1
DO ,1 SUB #6 <- #238 i=<;$+tW
DO ,1 SUB #7 <- #26 cu>(;=
DO ,1 SUB #8 <- #248 }6a}8EyFP
DO ,1 SUB #9 <- #168 bEcN_7
DO ,1 SUB #10 <- #24 =!SV;^-q
DO ,1 SUB #11 <- #16 1]''@oh{6U
DO ,1 SUB #12 <- #158 Ld.9.d]
DO ,1 SUB #13 <- #52 nQV0I"f]?]
PLEASE READ OUT ,1 $#f_p-N
PLEASE GIVE UP 1#3|PA#>
wyX3qH
w3q'n%
Java mTu>S
public class Hello 9+9g (6
{ yOz6a :r
public static void main(String[] args) '8)kFR^9
{ 8'@5X-nD
System.out.println("Hello, world!"); 15J"iN2"W
} Y910\h@V
} yH"i5L9
DQK?y=vf
[(Z(8{3i
JSP O#;sY`fy_M
<% U:8]G
out.print("Hello, world!"); z0LspRaz
%> vW eg1
=cV|o]
Z4Q]By:/L
MIXAL O'(Us!aq
TERM EQU 19 the MIX console device number ( gg )?
ORIG 1000 start address AJB
NM
START OUT MSG(TERM) output data at address MSG sm'_0EUg
HLT halt execution j=T8b
MSG ALF "MIXAL" bDl#806P L
ALF " HELL" !0lk}Uzkh
ALF "O WOR" N4,oO H~
ALF "LD " F<{,W-my `
END START end of the program Az y`4
.g}N@
BNJ0D
Nuva
Z:^#9D{
<..直接输出..> M>5OC)E
Hello, world! + Fo^NT
BAXu\a-C_
<..或者..> (/$-2.@
Y _`JS;
<. z4_B/Q
// 不带换行 ?WXftzdf6u
? "Hello, world!" S||W
EGgw#JAi#t
// 或者 '6vo#D9M
kCEuzd=$V
// 带换行 ) ??N]V_U
?? 'Hello, world!' ;MNUT,U
.> c!
kr
BS
fx+_;y
nuWQ3w
p[e
OCaml VK*_pEV,}
let main () = RK-bsf
print_endline "Hello world!";; dQSO8Jf
Pa0W|q#?X
>ye.rRZd`
Pascal M`K]g&57hL
program Hello; mW!n%f
begin <eMqg u
writeln('Hello, world!'); V-#JV@b
end. >vo 6X]p~
-){6ynqv
,gZp/ yJ;
Perl 'gor*-o:wu
#!/usr/local/bin/perl Kd 1=mC
print "Hello, world!\n"; ,gNZHKNq
u-&V