“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。 >\Dy
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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》。 x 3=1/#9
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以下是用不同语言写成的Hello World程序的几个例子: l~rj7f;
Ada F'Y ad
with Ada.Text_Io; use Ada.Text_Io; P9bM+@5e
procedure Hello is jr4xh{Z`
begin IC0L&;En
Put_Line ("Hello, world!"); Q?k*3A
end Hello; Q v9q~l
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NS[eQ_rT
汇编语言 A)&FcMO*z
MjMDD
x86 CPU,DOS,TASM etr-\Cp
MODEL SMALL H2s:M
IDEAL 4k;FZo]S
STACK 100H ETdXk&AN
mVZh_R=a
DATASEG " CT}34l
HW DB 'Hello, world!$' Y<xqws
0>sa{Z
CODESEG t )zd'[
MOV AX, @data j,M$l mR')
MOV DS, AX fCr2'+O"b
MOV DX, OFFSET HW %#x4wi
MOV AH, 09H vA/SrX.
INT 21H V)^Xz8H_
MOV AX, 4C00H i.Rl&t
INT 21H S}@7Z`
END H#TkIFo]
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4XN
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x86 CPU,GNU/Linux,NASM GJ,&$@8)
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). >v:ex(y0
;Enter this into "hello.asm" then type: x0
)V
o]r
;"nasm -f elf hello.asm" <~smBd
;"ld hello.o -o hello" (;l@d|g
;"./hello" ic2D$`M
]RCo@QW
section .data ;data section declaration o1.~g'!^
msg db 'Hello World!',0AH z#tIa
len equ $-msg ;string length 4\;zz85E
;kgP:n
section .text ;code section declaration 0JlNUO5Nt
global _start ;entry point (start of execution) Q|(}rIWOQA
_start: mov edx,len ;string length P(D>4/f3"
mov ecx,msg ;string start KL&/Yt
mov ebx,1 ;file handle: stdout ppAbG,7
mov eax,4 ;sys_write ?:;;0kSk
int 80h ;kernel system call LDlYLsF9
.vu7$~7
mov ebx,0 ;return value 7V"?o
mov eax,1 ;sys_exit l]]NVBA])
int 80h ;kernel system call V! Wy[u
YdhTjvx
%N8I'*u
x86 CPU,Windows,MASM32 Bz]tKJ
.386 [3Q0KCZ0(
.model flat,stdcall *rq*li;
option casemap:none qed_ PsI
;Include 文件定义 0+>g/>
include windows.inc ;(NTzBq!1
include user32.inc ;8]HCC@:
includelib user32.lib Px_8lB/;
include kernel32.inc !<w6j-S
includelib kernel32.lib AzU:Dxr>.G
;数据段 I-#!mFl
.data O/~T+T%
szCaption db 'A MessageBox!',0 i2qN 0?n
szText db 'Hello,world!',0 ?{J1&;j*
;代码段 v`S5[{6
.code ('z=/"(l
start: j7P49{
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK y_WC"
invoke ExitProcess,NULL rc=E%Qv%?
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 9wL2NC31Q
end start wkt4vE87
534pX7dg
iA[T'+.Y
AWK G@s:|oe
BEGIN { print "Hello, world!" } cj>@Jx}]M
#]Vw$X_S
0]>bNbLB"
BASIC O@$>'Z
传统版BASIC(例如GWBASIC): f}c;s
amsl>wc!
10 PRINT "Hello, world!" Q4mtfpiDx
20 END 48p3m)5
ev&l=(hY
或在提示符输入: {V[xBL
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M>k&WtqK
?"Hello, world!":END }cz58%
'bfxQ76@sa
现代版BASIC(例如Quick BASIC): k7Nx#%xx
:lu!%p<$
Print "Hello, world!" v8-szW).
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以下的语句在Quick BASIC中同样有效: T)tr"<F5NP
l<_v3/3
? "Hello,world!" :$Cm]RZ
ZPf&4#|
Pr>$m{
Z
BCPL )F9IzR-&m
GET "LIBHDR" 8z93ETv7`
`_ ^I 2
LET START () BE ;)rhx`"n
$( !jP[=
WRITES ("Hello, world!*N") |(~IfSE2
$) y1`%3\
}5E H67
o=VZ7]
Befunge u9_?c
G-
"!dlrow olleH">v }r04*P(
, &'\-M6GW
^_@ pTAm}
,>6mc=p
Xk:x=4u&
Brainfuck 4gZ R!J
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< i(rYc
+++++++++++++++.>.+++.------.--------.>+.>. s#~VN;-I
; <- f
]_ LAy
C 6heK8*.T
#include <stdio.h> oKRI2ni$j9
Z){fie4WM
int main(void) |$8N*7UD
{ NrcV%-+u%
printf("Hello, world!\n"); p+I`xyk
return 0; yFo8x[
} c7rC !v
k H06Cb
7WV"Wrl]
C++ o/U}G,|G
#include <iostream> jp-(n z\
-6q7ze{@
int main() * R&77 o7
{ 2Z(?pJyDM
std::cout << "Hello, world!" << std::endl; ~LH).\V
return 0; Q{hK+z`D
} ]<},[s
IFSIQ
q
_=w=!U&W
C++/CLI j97c@
int main() 9dg+@FS}=
{ * se),CP!s
System::Console::WriteLine("Hello, world!"); +SFo2Wdr43
} (Q"s;g
]:6IW:
(i)O@Jve
C# (C Sharp) -OQ6;A"#
class HelloWorldApp `yXHb
{ ZYl*-i&~?
public static void Main() &>@EfW](
{ BBoVn^Z*R
System.Console.WriteLine("Hello, world!"); =rNI&K_<
} )=h+5Z>E1
} b<g9L4s
;;17 #T2
ECOzquvM
COBOL k1^&;}/f:
IDENTIFICATION DIVISION. uY)|
PROGRAM-ID. HELLO-WORLD. |>p?Cm
v3/G.B@=
ENVIRONMENT DIVISION. :jWQev"/
NSh~O!pX
DATA DIVISION. DTV"~>@
bq}o#d5p-_
PROCEDURE DIVISION. ]\%u9,b%!
DISPLAY "Hello, world!". c(S66lp
STOP RUN.
cCy*?P@
4q^'MZm1
`oH6'+fT`;
Common Lisp 7gbu7"Qc
(format t "Hello world!~%") jTz~
V&^
k'{Bhi4
&qFy$`"
DOS批处理 #ruL+-8!<
@echo off *1b)Va8v*
echo "Hello, world!" FAd4p9[Y
w>gB&59r
PeB7Q=d)K1
Eiffel w
]$Hr
class HELLO_WORLD \ssqIRk
QPpC_pZh
creation }EWPLJA
make _ye74$#
feature z0-`D.D@\
make is r(cd?sL96R
local gflu!C6
io:BASIC_IO *5|q_K
Pt
do TW}nO|qw
!!io R<x~KJ11c
io.put_string("%N Hello, world!") <2{-ey]
end -- make %Y// }
end -- class HELLO_WORLD \$[S=&E
=L&}&pT
i"o
%Gc
Erlang P+nd?:cz
-module(hello). [kyIF\0
-export([hello_world/0]). #)N}F/Od^
2^$Ha|
hello_world() -> io:fwrite("Hello, World!\n").
V
t@]
`z{sDe;
'9d]
B^)F
Forth pw5uH
." Hello, world!" CR &`IC3O5
V1Opp8
]3iQpL
Fortran YZ0Jei8+-
WRITE(*,10) $,9A?'
10 FORMAT('Hello, World!') ' (1`iQ;
STOP U^.kp#x#
END 9d_
Zdc
YA[\|I33
HSsG0&'-Y
HTML I=G-(L/&
<HTML> .>Fy ]Cqoh
<HEAD> ^>ICycJ
<TITLE> Hello World! </TITLE> 6wY6*R
</HEAD> I@/+=
<BODY> 78fFAN`
<p>Hello World!</p> hiQ #<
</BODY> 6A9
r{'1
</HTML> `8sC>)lrwu
K~ob]I<GiB
6=o'.03\f
HQ9+ qRnD{g|{1
H \7U'p:h=U
z IT)Hs5
b>Em~NMu_
INTERCAL rCp'O\@S
PLEASE DO ,1 <- #13 fS#I?!*}
DO ,1 SUB #1 <- #238 Cl>{vSN
DO ,1 SUB #2 <- #112 FZ~^cK9g:
DO ,1 SUB #3 <- #112 ]]^eIjg>a6
DO ,1 SUB #4 <- #0 -b`O"Ck*
DO ,1 SUB #5 <- #64 1HS43!
DO ,1 SUB #6 <- #238 {usv*Cm
DO ,1 SUB #7 <- #26 )~[rb<:)b
DO ,1 SUB #8 <- #248 x^]J^L45
DO ,1 SUB #9 <- #168 s i=m5$V
DO ,1 SUB #10 <- #24 BDiN*.w5
DO ,1 SUB #11 <- #16 %;MM+xVVX
DO ,1 SUB #12 <- #158 :.bBV]6q
DO ,1 SUB #13 <- #52 k(23Zt]
PLEASE READ OUT ,1 Mj5&vs~n;
PLEASE GIVE UP 7Z[6_WD3
UsQh+W"?
k|D =Q
Java W|-<ekH_u
public class Hello =Hf`yH\#
{ '}BYMEd/m%
public static void main(String[] args) }2+*E}g
{ uP NZ^lM
System.out.println("Hello, world!"); }$X/HK
} &r0U9J
} f)#rBAkt
P5Is#7udN8
^={s(B2
JSP o7sIpE9
<% _oAWj]~rO
out.print("Hello, world!"); /k^!hI"4c
%> '<-F3
ag{cm'.
Bm4fdf#A]
MIXAL ![Ll$Lr
TERM EQU 19 the MIX console device number !>,XK!)
ORIG 1000 start address '9XSz?
START OUT MSG(TERM) output data at address MSG /0z#0gNp
HLT halt execution )PCh;P0C
MSG ALF "MIXAL" `PS^o#
ALF " HELL" ,
G9{:
ALF "O WOR" <:ptNGR
ALF "LD " #fT<]j(
END START end of the program }!*CyO*
x.kIzI5
wrm
ReT?
Nuva #M@Ki1
<..直接输出..> J-5E# v
Hello, world! KvY1bMU!
2}0S%R(
<..或者..> wn/Y5
#,CK;h9jy!
<. ;Z!x\{-L
// 不带换行 fjh,e
? "Hello, world!" [
~:wS@%
,~*pPhQ8m
// 或者 0x,NMS
~djHtd>
// 带换行 N}CeQ'l[R
?? 'Hello, world!' h[>Puoz
.> D* QZR;D#.
&`I 7aP|
P-?R\(QYtR
OCaml 1<F6{?,z
let main () = O#n=mJ
print_endline "Hello world!";; uWjEyxPv{
WPDi)UX
75W@B}dZd
Pascal g27)$0&0
program Hello; Wxa</n8S[n
begin H: ]'r5sw
writeln('Hello, world!'); '#NDR:J"
end. 5bo')^xa
ukc<yc].+?
}9~U5UXWU
Perl i;fU],aK!
#!/usr/local/bin/perl se*!OiOt
print "Hello, world!\n"; ")i_{C,b^
h@jk3J9^
1 Szv4
PHP g_;4@jwTP"
<?php Xk`' m[
print("Hello, world!"); ,A[NcFdCB
?> v,Uu)Z
s[Whg!2~
:&J1#% t
Pike
?)2; W
#!/usr/local/bin/pike Jvr`9<`
int main() >l^[73,]L
{ |h-e+Wh1
write("Hello, world!\n"); @y8)
"m"
return 0; ,qwVDYJ
} [sZ,nB/
ODKHI\U
[z,6 K=
PL/I h3j`X'
Test: procedure options(main); Oid;s!-S 6
declare My_String char(20) varying initialize('Hello, world!'); p%-;hL!
put skip list(My_String); t#2szr+
end Test; TJUYd9O4[
?0?+~0sI
bKQ_{cR
Prolog 8iC9xSH[%
goal 9a]J Q
write("hello,world!"). ;^ff35EE8
" nLWvV1
WO=P~F<