“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。 3"HGEUqA
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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》。 `wP/Zp{Hy
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以下是用不同语言写成的Hello World程序的几个例子: Wg}B@:`T
Ada bbfDt^
with Ada.Text_Io; use Ada.Text_Io; 7KvXTrN!9
procedure Hello is -d$8WSI8
begin vgU hN_rK
Put_Line ("Hello, world!"); stf,<W
end Hello; +Q@/F~1@6@
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P.(t+
'd|Q4RE+W
汇编语言 /}h71V!
< fojX\}3
x86 CPU,DOS,TASM NB|RZf9M
MODEL SMALL p?J~'
IDEAL V6DBKq
STACK 100H m;;0 Cl
Ov0O#`
DATASEG Pg!;o=
{M
HW DB 'Hello, world!$' 7yq7a[Ra
&=+cov(3
CODESEG rW=k%#
p
MOV AX, @data *` @XKK
MOV DS, AX yFPaWW
MOV DX, OFFSET HW h"RP>fZt
MOV AH, 09H v!pj v%
INT 21H 1Pw(.8P
MOV AX, 4C00H d- Z+fz
INT 21H I,C AFq
END uQ)JC7b\
[*Aqy76Qa
jkQt'!
x86 CPU,GNU/Linux,NASM =sUl`L+w,L
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). #Lhj0M;a
;Enter this into "hello.asm" then type: xN{"%>Mx
;"nasm -f elf hello.asm" +q`rz
;"ld hello.o -o hello" Vid{6?7kh
;"./hello" 8xD<A|
6oTbn{=UUq
section .data ;data section declaration =ELDJt
msg db 'Hello World!',0AH oUKBb&&O
len equ $-msg ;string length Oet#wp/I
lJGqR0:r+
section .text ;code section declaration %ojR?=ON
global _start ;entry point (start of execution) 6h0U
_start: mov edx,len ;string length /A[oj2un
mov ecx,msg ;string start z'\}/k+
mov ebx,1 ;file handle: stdout q5'yD;[hE
mov eax,4 ;sys_write (A] m=
int 80h ;kernel system call 1{hoO<CJ
ATMogxh
mov ebx,0 ;return value f'zU^/$rf
mov eax,1 ;sys_exit !UgUXN*
int 80h ;kernel system call #2lvfR|
v8U1uOR,%
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x86 CPU,Windows,MASM32 :9!0Rm
.386 k8x&aH
.model flat,stdcall ~J. Fl[
option casemap:none Qa7S'(
;Include 文件定义 iw~V_y4
include windows.inc O{i_?V_
include user32.inc $!l2=^\3
includelib user32.lib \yX !P1
include kernel32.inc \@}$Wjsl
includelib kernel32.lib Hh/
-^G
;数据段 _/sf@R
.data A9qO2kq7_
szCaption db 'A MessageBox!',0 ?D~SHcBaN
szText db 'Hello,world!',0 ; ?lM|kK
;代码段 9MzkG87J
.code (Nlm4*{h
start: yg[;
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 5Kw?SRFH/
invoke ExitProcess,NULL lPN< rgg
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> A-wxf91+:
end start x5 ~E'~_
oplA'Jgnv
WfbNar[
AWK UlN|Oy,
BEGIN { print "Hello, world!" } Nt^&YE7d:
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BASIC Q
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传统版BASIC(例如GWBASIC): u[|S*(P
SyVbCj
10 PRINT "Hello, world!" P_g0G#`4
20 END 4qz{D"M
=XBXSW8)DJ
或在提示符输入: :=7 '1H
U1|4vd9
?"Hello, world!":END K ':pU1
;,})VoC\!
现代版BASIC(例如Quick BASIC): I64:-P[\
_vLT!y
Print "Hello, world!" f EiEfu
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x1$C
以下的语句在Quick BASIC中同样有效: &ii
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o9>X"5CmX
? "Hello,world!" o+&sodt|`
zu%pr95U
]3'd/v@fT
BCPL f *vziC<m
GET "LIBHDR" [bXZPIz;j
W+X
zU"l
LET START () BE i^l;PvIF
$( C7PiuL?
WRITES ("Hello, world!*N") /([aD~.
$) a\MJbBXv
f9$q.a*
9HP--Z=
Befunge -(EqBr@_
"!dlrow olleH">v }f}&|Vap
, Wwz{98,K
^_@ edQ><lz
p\K5B,
XEI]T~
Brainfuck 9^tyjX2
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< yS""*8/
+++++++++++++++.>.+++.------.--------.>+.>. =Sq7U^(>
$B2@mC([S
hGeRM4zVZZ
C rgCId@R
#include <stdio.h> ra1hdf0"
R~i<*
int main(void) Z&%61jGK
{ |Bid(`t.
printf("Hello, world!\n"); = U5)m
return 0; 1gC=xMAT
} Z+?j8(:n
e|I5Nx2)
n;U|7it7
C++ ;8@A7`^
#include <iostream> VioVtP0
\h-[u%
int main() W+S>/`N
{ Y9WH%
std::cout << "Hello, world!" << std::endl; ,O2F}5|;
return 0; V;m3=k0U
} r~sGot+sQA
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Na=q(OKN
C++/CLI _]\mh,}
int main() 4avM:h
{ yS?1JWUC>
System::Console::WriteLine("Hello, world!"); Zy'bX* s|
} NYCkYI
' :Te#S
xZkLN5I{
C# (C Sharp) =Rui
class HelloWorldApp S^_na]M"4
{ aAX 8m
public static void Main() 3y@'p(}Az
{ (]ORB0kl
System.Console.WriteLine("Hello, world!"); h\1_$ac
} A%9"7]:
} =$HzEzrw
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rO-Tr
COBOL O6`@'N>6P
IDENTIFICATION DIVISION. 03MB,
PROGRAM-ID. HELLO-WORLD. r6^DD$X
MZ{)`7acR\
ENVIRONMENT DIVISION.
~d
}-
mFvw s
DATA DIVISION. 3&}wfK]X
6Up,B=sX0
PROCEDURE DIVISION. Gm*i='f!?
DISPLAY "Hello, world!". 2qN6{+]
STOP RUN. 13B[mp4
d/;oNC+
bzZEwMc6
Common Lisp c,e
0+
(format t "Hello world!~%") ^f>+5G
o-/Xa[yC
Al
0zL
DOS批处理 q
S2#=
@echo off ^cd+W?
echo "Hello, world!" jiz"`,-},O
A"p7N?|%
:rwF5
Eiffel ><5tnBP|+L
class HELLO_WORLD 9V("K
<T<?7SE+
creation &R>x;&Gj
make d:Wh0 y}
feature ,M5J~Ga
make is 7>v1w:cC]
local DTPYCG&%
io:BASIC_IO _=8x?fC:rl
do O0c#-K.f
!!io o|(-0mWBQA
io.put_string("%N Hello, world!") 4)i/B99k
end -- make 5q}680s9+
end -- class HELLO_WORLD 9psD"=/"
o%5^dX&[
vEOoG>'Zq
Erlang ~~]L!P
-module(hello). wSBDJvI
-export([hello_world/0]).
D`2Iy.|!
A9!%H6
hello_world() -> io:fwrite("Hello, World!\n"). (sz=IB ;
d7qHUx'=z
3u3(BY{"\F
Forth `)/G5 fB
." Hello, world!" CR sTU`@}}
e>=P'
nPD5/xW
Fortran Szsq|T
WRITE(*,10) +x\b- '
10 FORMAT('Hello, World!') S1.w^Ccy
STOP 5\A[ra
END 0jF~cV
D4?5% s
m$Lq#R={Z
HTML i"p)%q~ z
<HTML> 51u8.%{4
<HEAD>
7aj|-gZ
<TITLE> Hello World! </TITLE> b7^VWX%
</HEAD> w(zlHj
<BODY> $*tq$DZ4&
<p>Hello World!</p> =X'i^Q
</BODY> <O>1Y09C/
</HTML> mFC0f?nr
llXyM */
Z?kLAhy!
HQ9+ o}C| N)'
H q$ (@
XbsEO>_Z'A
'8R5?9"
INTERCAL m_LW<'
PLEASE DO ,1 <- #13 M^JRHpTn
DO ,1 SUB #1 <- #238 s-!Bpr16o0
DO ,1 SUB #2 <- #112 2 |
$
DO ,1 SUB #3 <- #112 eLXG _Qb"
DO ,1 SUB #4 <- #0 (vMC.y5
DO ,1 SUB #5 <- #64 %8NAWDb{
DO ,1 SUB #6 <- #238 6Lk<VpAa
DO ,1 SUB #7 <- #26 lS&$86Jo(
DO ,1 SUB #8 <- #248 g!;k$`@{E'
DO ,1 SUB #9 <- #168 x2(!r3a
DO ,1 SUB #10 <- #24 -`x$a&}
DO ,1 SUB #11 <- #16 v<c~
'?YzO
DO ,1 SUB #12 <- #158 ?&W1lYY
DO ,1 SUB #13 <- #52 L8("1_
PLEASE READ OUT ,1 ;O5p>o
PLEASE GIVE UP P#H|at
#K:|@d
RLBjl%Q>
Java Xo]QV.n
public class Hello f|G,pDLx
{ '~Uo+<v$w
public static void main(String[] args) Cg[]y1Ne
{ *T\-iICw
System.out.println("Hello, world!"); hyqsMkW|
} d:jD
} mVFz[xI
4X,fb`
*ILx-D5qr
JSP ~RGZY/4
<% 72@lDY4cE
out.print("Hello, world!"); #n&/yYl9(l
%> D5x }V
LnZzY0
-{H;w=9
MIXAL &iCE/
TERM EQU 19 the MIX console device number "'/:Tp)
ORIG 1000 start address DrE
+{Spm
START OUT MSG(TERM) output data at address MSG Du@?j7&l=$
HLT halt execution Fr/3Qp@S
MSG ALF "MIXAL" <%WN<T{q|
ALF " HELL" .XD7};g
ALF "O WOR" pE.f}
ALF "LD " =*EIe z*.x
END START end of the program g=w,*68vuy
c"qaULY
E#3KWp#M
Nuva qFEGV+
<..直接输出..> Fe8JsB-
Hello, world! WmU5YZ(mAq
01v7_*'R
<..或者..> IHqY/ j
o!.\+[
<. 0ox
8_l
// 不带换行 ~x<nz/^
? "Hello, world!" OU)~
02|\
::13$g=T9s
// 或者 ,>" rcd
+B^(,qKMN
// 带换行 .yz-o\,gF%
?? 'Hello, world!' Tj
&PB_v1
.> h{zE;!+)D
4R_Vi[i
(!FUu
OCaml cd8ZZ8L
let main () = (qn ;MN6<
print_endline "Hello world!";; HN'r
ZAZ(
(hywT)#+
u<8 f;C_
Pascal X8!=Xjl)
program Hello; L #'N
begin *We.?"X'].
writeln('Hello, world!'); [~&C6pR
end. }7k!>+eQ
0,)Ao8
XD\RD
Perl -VK6Fq
#!/usr/local/bin/perl z4l
O
print "Hello, world!\n"; q/w U7P\%
BoZG^
.E!p
PHP 2u9^ )6/
<?php GH%'YY3|
print("Hello, world!"); k;V4%O
?> _Q<wb8+/
XOl]s?6H$
J"w!Q\_
Pike W":is"
#!/usr/local/bin/pike =~r?(u6d
int main() c"aiZ(aP
{ YJgw%UVJ5m
write("Hello, world!\n"); dZ!Wj7K)
return 0; 3Rid1;L0U
} %N)o*H&
C]aa^_Ldd-
%
'>S9Ja3
PL/I 1jZ:@M:
Test: procedure options(main); Y""-U3;T~
declare My_String char(20) varying initialize('Hello, world!'); DQg:W |A
put skip list(My_String); cmDskQ:
end Test; u>;#.N/
iKB8V<[\T
@+",f]
Prolog U*8;ZXi
goal `n8) o %E9
write("hello,world!"). bwM>#@H
i|>K
TX{DZ#
Python fys@%PZq
#!/usr/local/bin/python hCO*gtA)M
print "Hello, world!" +MC>?rr_u
<[xxCW(2
^SCZ
REXX -tT{h4
say "Hello, world!" /:>f$k4~h
'#<?QE!d2
CAY^ `K!
Ruby ]}9cOb%I
#!/usr/bin/ruby !lE
(!d3M
print "Hello, world!\n" j' -akXo<
1?HUXN#,
AO;`k]0e
Scheme UuxWP\~2
(display "Hello, world!") io
cr
(newline) ,
j,[4^
+3vK=d_Va
ld94ek
sed (需要至少一行输入) VS^%PM#:/
sed -ne '1s/.*/Hello, world!/p' G Q&9by=}
/-4i"|
C 0*k@kGy
Smalltalk 'q1)W'
Transcript show: 'Hello, world!' |LKhT4rE
5d|*E_yu
$c0SWz
SNOBOL >0+m
OUTPUT = "Hello, world!" -!">SY\
END ? $pGG
Pf)<