“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。 ax>j3HKi
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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》。 jQzl!f1c3
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以下是用不同语言写成的Hello World程序的几个例子: @J&korU
Ada X3a 9-
with Ada.Text_Io; use Ada.Text_Io; 'prHXzi(h
procedure Hello is (De{r|
begin /zt M'
Put_Line ("Hello, world!"); j{YYG|
end Hello; xI1{Wo*2C}
c\2rKqFD8
(T0MWp 0
汇编语言 k'PvTWR
4")`}T
x86 CPU,DOS,TASM |mE;HvQF
MODEL SMALL ?"r=08
IDEAL 0W}qp?
STACK 100H 9M;t4Um
%2T
i
Rb
DATASEG h#"$W;(
HW DB 'Hello, world!$' G/N c@XG\
R?O)vLmd
CODESEG 6IG?t
MOV AX, @data B Z|A&;
MOV DS, AX &G\mcstX
MOV DX, OFFSET HW y0sce
MOV AH, 09H ,#UZp\zZ*
INT 21H Jr( =Y@Z'
MOV AX, 4C00H 4[@YF@_=M
INT 21H EC;>-s
END Cp(2]Eb
Nw'03Jzx_
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x86 CPU,GNU/Linux,NASM ]vlBYAW'
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 1'\QD`M9^
;Enter this into "hello.asm" then type: X0u,QSt'O
;"nasm -f elf hello.asm" q50F!yHC-
;"ld hello.o -o hello" 2^=.j2
;"./hello" z'"7zLQ
q:/df]Ntt
section .data ;data section declaration 4lB??`UN
msg db 'Hello World!',0AH /W$i8g
len equ $-msg ;string length =&} _bd/]
3{$7tck,
section .text ;code section declaration N
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global _start ;entry point (start of execution) d]]z )
_start: mov edx,len ;string length o]4\Geg$
mov ecx,msg ;string start IgG[Pr'D
mov ebx,1 ;file handle: stdout bsF_.S*k@
mov eax,4 ;sys_write 7bzm5w@v
int 80h ;kernel system call lb.Q^TghU
iCF},W+
mov ebx,0 ;return value Y@0'0
mov eax,1 ;sys_exit SOhM6/ID2/
int 80h ;kernel system call e4YP$}_L
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:rUMmO -
x86 CPU,Windows,MASM32 IibrZ/n6
.386 X`KSj
N&(
.model flat,stdcall ]alc%(=
option casemap:none t` "m@
;Include 文件定义 ]a4U\yr
include windows.inc &bW,N
include user32.inc uqC#h,~
0
includelib user32.lib Y/kq!)u;%L
include kernel32.inc h6
{vbYj
includelib kernel32.lib Nv7-6C6<
;数据段 }+9?)f{?@
.data KOS0Du
szCaption db 'A MessageBox!',0 k0e}`#t
szText db 'Hello,world!',0 %hsCB
.r>|
;代码段 i]%f94
.code =Z
start: V ql4*OJW
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK b$,Hlh,^
invoke ExitProcess,NULL <bKtAf
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 25)9R^
end start HE,L8S
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AWK dT|f<E/P
BEGIN { print "Hello, world!" } ~\_VWXXvIW
Dcvul4Q
\b"rf697,
BASIC = ^NvUrK
传统版BASIC(例如GWBASIC): NS[eQ_rT
%xg+UW
}
10 PRINT "Hello, world!" \vAjg
20 END R@\}iyM
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或在提示符输入: etr-\Cp
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?"Hello, world!":END fY!?rZ)$
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现代版BASIC(例如Quick BASIC): .>B'oD
2!^=G=H/
Print "Hello, world!" ! I@w3`
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以下的语句在Quick BASIC中同样有效: ?bB>}:~j)
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? "Hello,world!" =%X."i1A
^3$l!>me
qH}8TC
BCPL R |c=I}@F
GET "LIBHDR" xm{]|~^JG
OyZR&,q
LET START () BE JN0h3nZ_
$( zuvPV{
X
WRITES ("Hello, world!*N") ~=|}!A(
$) N)X Tmh2v|
86r"hy~
V)^Xz8H_
Befunge ,MCTb '=G
"!dlrow olleH">v +`HMl;0m
, E=s,-
^_@ o+a=
~rb0G*R>
P8d
Brainfuck ?F"o+]i+^
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Qg*\aa94
+++++++++++++++.>.+++.------.--------.>+.>. "6f`hy
+/ukS6>gr
{@InOo!4w]
C KZppQ0
#include <stdio.h> ?"x4u#x
(9]Uuvfp6"
int main(void) "\b>JV5
{ RQ,#TbAe
printf("Hello, world!\n"); 7rjl-FUA~
return 0; :;+!ID_
} \;{ ]YX
*
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C++ <Vhd4c
#include <iostream> G^c,i5}w
W0gS>L_
int main() I=0c\ U}
{ VE )D4RL
std::cout << "Hello, world!" << std::endl; Unk/uk
return 0; @{y'_fw
} op6]"ZV-C
Xh@K89`uX
^Oz~T|)
C++/CLI ?xj8a3F
int main() -zg*p&F
{ /Y0~BQC7!
System::Console::WriteLine("Hello, world!"); >. |({;n9
} ?:;;0kSk
b RR N
nrl?<4_
C# (C Sharp) ,h*gd^i
class HelloWorldApp [b++bCH3
{ |qNe_)
public static void Main() S#/BWNz|
{ 8}'iEj^e
System.Console.WriteLine("Hello, world!"); C]L)nCOBX
} hfwJZ\_60
} )CFJXc:
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~apt,hl
COBOL z=D5*
IDENTIFICATION DIVISION. 6FB0g8
PROGRAM-ID. HELLO-WORLD. KdEvu?
o*KAS@&
ENVIRONMENT DIVISION. !M~:#k
CD`a-]6qA
DATA DIVISION. HMq}){=S
[DaAvN^0A
PROCEDURE DIVISION. zj`c%9N+
DISPLAY "Hello, world!". N^;lp<{6?
STOP RUN. HWjJ.;k}a
^z
*0
!<w6j-S
Common Lisp S@qPf0dL<
(format t "Hello world!~%") K"!rj.Da
&f.5:u%{b
F-;J N
DOS批处理 7P{= Pv+
@echo off 6r~9$IM
echo "Hello, world!" ;As~TGiT
% S312=w
C
@Ts\);^
Eiffel 3qWrSziD
class HELLO_WORLD }i+C)VUX
{Ydhplg{
creation lS=YnMs6a
make <-`bWz=+
feature ufL,Kq4
make is \]x`f3F
local 3!P^?[p3
io:BASIC_IO 7F"ljkN1S
do 48xgl1R(j
!!io 7'wpPXdY1
io.put_string("%N Hello, world!") 4!!|P
end -- make maap X/J
end -- class HELLO_WORLD <exCK*G
voZaJ2ho/O
k=)U
Erlang Sm/8VSY
-module(hello). BbB3#/g
-export([hello_world/0]). 0]>bNbLB"
~A0AB
`7
hello_world() -> io:fwrite("Hello, World!\n"). =-dnniKW4
DFr$2Y3H
Jk.x^
Forth tY_=[6?Zu
." Hello, world!" CR D4$b-?y
2tz4Ag
+:Zwo+\kSN
Fortran ]D6<6OB
WRITE(*,10) kH 9k<{
10 FORMAT('Hello, World!') }wf8y
STOP sX?arI=_U
END S1r{2s&
'&CZ%&(Gw
br\3}
HTML N<#J!0w
<HTML> k7Nx#%xx
<HEAD> oypLE=H
<TITLE> Hello World! </TITLE> LsR<r1KDJ
</HEAD> 2[w9#6ly
<BODY> H [+'>Id:
<p>Hello World!</p> <(E)M@2
</BODY> uz8eS'8
</HTML> i?_Q@uA~<:
mLq0;uGL|
n^'d8Y(
HQ9+ aMqt2{f+
H U'jmgHq
-n:2US<
%[n5mF*`
INTERCAL W@}@5,}f>
PLEASE DO ,1 <- #13 B+FTkJ0t+G
DO ,1 SUB #1 <- #238 +aL6$
DO ,1 SUB #2 <- #112 .3EEi3z6z
DO ,1 SUB #3 <- #112 3g7]$}
DO ,1 SUB #4 <- #0 (F'~K,0
DO ,1 SUB #5 <- #64 2`i&6iz
DO ,1 SUB #6 <- #238 [CHN3&l-5S
DO ,1 SUB #7 <- #26 #mH28UT
DO ,1 SUB #8 <- #248 !jP[=
DO ,1 SUB #9 <- #168 /8Lb_QH{
DO ,1 SUB #10 <- #24 6?"Gj}|r
DO ,1 SUB #11 <- #16 7:~3B-Tb
DO ,1 SUB #12 <- #158 v0'z''KM!
DO ,1 SUB #13 <- #52 Mx}r! Q
PLEASE READ OUT ,1 0o/;cBH
PLEASE GIVE UP ,$]m1|t@z
+^:uPW^U
S> Fb'rJ3
Java IlEU6Rs
public class Hello [<+T@"y
{ Q*1Avy6]
public static void main(String[] args) pTAm}
{ ;zqxDl_
System.out.println("Hello, world!"); Vb 36R_u
} 65B&>`H~
} a[t"J*0
^C,rN;mX'
FUI/ A>
JSP Tu:lIy~A
<% ruhC:rg:/
out.print("Hello, world!"); C4E* q3[Y
%> D[T\_3W
L{sFR^-G
E:}s6l
MIXAL Njo.-k
TERM EQU 19 the MIX console device number j+.E#:tu"
ORIG 1000 start address uToi4]w"y
START OUT MSG(TERM) output data at address MSG _bh$
t
HLT halt execution >>=zkPy
MSG ALF "MIXAL" 25G~rklk
ALF " HELL" Sn97DCdk
ALF "O WOR" B4OFhtYE
ALF "LD " }T%E;m-
END START end of the program :CM2kh"Iu
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h6Vd<sV\tf
Nuva EhW@iYL
<..直接输出..> }lk9|U#6*`
Hello, world! pJ?y
]_>38f7h
<..或者..> >U:-U"rA?
n~,6!S
<. h\C1:0x{
// 不带换行 jxK
`ShW=
? "Hello, world!" HELTL$j,b
be6`Sv"H
// 或者 $7-4pW$y
vSQB~Vw8t
// 带换行 $jC+oYXj
?? 'Hello, world!' D<Z\6)|%I
.> )x5w`N]lm
tjZS:@3
Z
'fb&3
OCaml @
/e{-Q
let main () =
zll?/|%
print_endline "Hello world!";; 0s4]eEXH
gYL#} ) g
DUf. F
Pascal %z1hXh#+
program Hello; `=TJw,q
begin S{cK~sZj
writeln('Hello, world!'); 'pAq;2AA
end. *XXa9z
k%RQf0`T
WAr6Dv,8
Perl ?AQR\) P
#!/usr/local/bin/perl C-2#-{<
print "Hello, world!\n"; eET1f8B=L
CwF=@:*d
o>M&C
X+j$
PHP `)jAdad-s
<?php $nthMx$
print("Hello, world!"); mqQ//$Y
?> 1
RyvPP
o<S(ODOfi
BBoVn^Z*R
Pike (.M &nN'Ce
#!/usr/local/bin/pike gA+@p'XnR
int main() Jl)Q#
{ 5X`m.lhUc
write("Hello, world!\n"); cTJG1'm
return 0; ^O5PcV 3Eg
} EU7mP
MxJ
w3Qil[rg
n\scOM)3
PL/I XQ k,xQ
Test: procedure options(main); :EC[YAK+D
declare My_String char(20) varying initialize('Hello, world!'); ^@maF<Jb
put skip list(My_String); G{s
q|1
end Test; m!<uY?,hf
w##$SaTI
c+TCC%AJQI
Prolog d_Y7/_i
goal J16(d+
write("hello,world!"). @}e5T/{X}T
5,V3_p:)VI
tjy@sO/Q
Python &C E){jC
#!/usr/local/bin/python $Jy1=/W&
print "Hello, world!" E7Pz~6
;x=0+0JD
fH
5/
REXX s4\_%je<v
say "Hello, world!" "Kn%|\YL@4
[1`&\C_E
<yEd'Z
Ruby pL'+sW
#!/usr/bin/ruby OEgp!J
print "Hello, world!\n" "\Nn,3qp
)mXu{uowr
2G`tS=Un
Scheme ~LN
{5zg
(display "Hello, world!") 3hzKd_
(newline) K<w$
6SD9lgF*-
&Sp2['a!
sed (需要至少一行输入) }W* q
sed -ne '1s/.*/Hello, world!/p' M,9f}V)
*1b)Va8v*
"PY&N