“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。 ()'yY^
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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》。 7%j1=V/
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以下是用不同语言写成的Hello World程序的几个例子: 83(-/y
Ada > J.q3
with Ada.Text_Io; use Ada.Text_Io; *XUJv&ZN
procedure Hello is ^;8dl.;
begin et`1#_o
Put_Line ("Hello, world!"); v[Mh[CyB
end Hello; 3VZ}5
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汇编语言 ;B^ 9sr
nyoLrTs{
x86 CPU,DOS,TASM '048Qykt;
MODEL SMALL t6q7w
IDEAL tZXq<k9
STACK 100H yac4\%ze
:$=]*54`T
DATASEG + *W%4e
HW DB 'Hello, world!$' MZrLLnl6\
5)c B\N1u
CODESEG Lo<WK
MOV AX, @data #x+7-hi
MOV DS, AX >b7Yk)[%
MOV DX, OFFSET HW xe4`D>LUo
MOV AH, 09H m2a[E0
INT 21H ZGw6Bd_I
MOV AX, 4C00H +B '<0
INT 21H X :#}E7]j
END P7 h^!a/
6:Hd `
H'"=C&D~
x86 CPU,GNU/Linux,NASM `_iK`^(-
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). " k0gZb
;Enter this into "hello.asm" then type: j'uzjs[
;"nasm -f elf hello.asm" ]\1H=g%Ou
;"ld hello.o -o hello" l NLa:j
;"./hello" Qef5eih
M7fPaJKL
section .data ;data section declaration 6vfut$)[{
msg db 'Hello World!',0AH {1"kZL
len equ $-msg ;string length u0Bz]Ux/Q
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LC^c
section .text ;code section declaration K_Pbzj4(P
global _start ;entry point (start of execution) csFLBP
_start: mov edx,len ;string length h1~/zM/`
mov ecx,msg ;string start 7](aPm8
mov ebx,1 ;file handle: stdout :IX_|8e ^
mov eax,4 ;sys_write ms&6N']
int 80h ;kernel system call r0Zj'F_e
tXCgRU
mov ebx,0 ;return value HGao} @'
mov eax,1 ;sys_exit /[qLf:rGI
int 80h ;kernel system call #e[S+a
2Rqpok4
Ofc
u4pi
x86 CPU,Windows,MASM32 $ba*=/{[q
.386 782 oXyD
.model flat,stdcall #[&9~za'"m
option casemap:none (GoxiX l
;Include 文件定义 kr\#CW0?
include windows.inc Bdcs}Ga
include user32.inc I{$TMkh[
includelib user32.lib ctoh&5%!n+
include kernel32.inc Ub{7 Xk
n
includelib kernel32.lib |fB/ hs \
;数据段 l h?[wc
.data
6`@6k2]
szCaption db 'A MessageBox!',0 5FVmk5z]d
szText db 'Hello,world!',0 q%/\
;代码段 8]i7wq#=
.code v*kX?J#]5
start: nKmf#
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK L=@8Zi!2<
invoke ExitProcess,NULL M4n0GWHLy
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Cb6K!5[q]
end start *qJHoP;
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kpRk.Q*
AWK 0Q~\1D 9g
BEGIN { print "Hello, world!" } ^)o#/"JA
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BASIC Jsa;pG=3&
传统版BASIC(例如GWBASIC): :(K JLa]
3T
/_#=9TV
10 PRINT "Hello, world!" ,T-xuNYC
20 END b%h.>ij?
Us\Nmso
z
或在提示符输入: ?^ R"a##
uvRX{q4
?"Hello, world!":END Uuktq)NU
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现代版BASIC(例如Quick BASIC): ub2B!6f a
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Print "Hello, world!" DFbhy
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以下的语句在Quick BASIC中同样有效: Ri3*au/Q
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? "Hello,world!" U1D;O}z~
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xS; tmc
BCPL #"-DE-I[
GET "LIBHDR" FP")$
,=s
Q?bC'147O
LET START () BE ltv~Kh
$( ctPT=i60
WRITES ("Hello, world!*N") &"=O!t2
$) sw50lId
YlXqj\a
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Befunge braI MIQ`
"!dlrow olleH">v z2jS(N?J1
, xx G>Leml
^_@ "g/UpnH
a{Y8hR
Rl
(+TE
Brainfuck ?weuq"*a
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< }%c0EY'
+++++++++++++++.>.+++.------.--------.>+.>. &w{z
Rsx?8Y^5
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C _z\qtl~3
#include <stdio.h> `,Fc271`
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int main(void) T#KVN{O
{ ~ymSsoD^
printf("Hello, world!\n"); J&L#^f*d
return 0; 9R:?vk4
} a_zf*;
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C++ u~!Pzz3"
#include <iostream> \Hu?K\SWs
zpy&\#Vc
int main() ?[.g~DK,
{ O`_]n
std::cout << "Hello, world!" << std::endl; wS [k}
return 0; k;<F33v;Mh
} xv7nChB
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wsj5;(f+
C++/CLI Yez
int main() KcM+8W\
{ XUK%O8N#9
System::Console::WriteLine("Hello, world!"); XcKyrh;i
} BPu>_$C
n>YgL}YZ?
KssIoP
C# (C Sharp) zomg$@j
class HelloWorldApp ^oEaE#I
{ ~g *`E!2
public static void Main() ~Q)Dcit-
{ 3V/f-l]X/
System.Console.WriteLine("Hello, world!"); ^t[br6G
} 2\#~%D>[
} 5 HN,y
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mFyYn,Mu|
COBOL ^mZTki4
IDENTIFICATION DIVISION. !/Wv\qm
PROGRAM-ID. HELLO-WORLD. 9$^v*!<z\
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ENVIRONMENT DIVISION. _mDvRFq
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DATA DIVISION. %sS7o3RW\
V6b)
PROCEDURE DIVISION. J!:v`gb#@A
DISPLAY "Hello, world!". 2vW@d[<J
STOP RUN. F5<GGEQb
_p| KaT``
gWy2E;"a
Common Lisp aIE\B4w
(format t "Hello world!~%") ScC!?rTW~7
GEAVc9V
P,n:u'Iwy
DOS批处理 S4%MnT6Uy
@echo off )Ju$PrO
echo "Hello, world!" |bmc6G[
a; 0$fRy
L\^H#:?t
Eiffel 5G#K)s(QC
class HELLO_WORLD v?h8-yed
9'!I6;M
creation <~Tfi*^+
make 7@i2Mz/eV
feature D"n
3If%
make is dUpOg{I.x
local 1I U*:Z;Rz
io:BASIC_IO ~{s7(^ P
do Pl[WCh
!!io #e;\Eap
io.put_string("%N Hello, world!") 0"M0tA#
end -- make Uf-`g>
end -- class HELLO_WORLD DYCXzFAa
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Erlang cWL7gv\|
-module(hello). _xXDvBU
-export([hello_world/0]). Q"H1(kG|
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hello_world() -> io:fwrite("Hello, World!\n"). cH$Sk
_:9-x;0H2
"zN]gz=OV>
Forth L QP4#7
." Hello, world!" CR R P6R1iN3
V~qlg1h
cx(b5Z
Fortran zXg/.z]
WRITE(*,10) zgHF-KEV
10 FORMAT('Hello, World!') tL@m5M%:N2
STOP N
@sVA%L.
END Ci^tP~)&"
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HTML
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<HTML> ^7%
KS
<HEAD> #-u?+Nk/
<TITLE> Hello World! </TITLE> @g'SH:}
</HEAD> @y`7csbp
<BODY> pxs`g&3yd
<p>Hello World!</p> eEkbD"Q
</BODY> ;u: }rA)
</HTML> SwPc<Z?P
Xa32p_|5~
j!<RY>u
HQ9+ gL;tyf1P
H r` (U3EgP
sp$W=Wu7
awa$o
INTERCAL K.jm>]'z4;
PLEASE DO ,1 <- #13 ZN?UkFnE
DO ,1 SUB #1 <- #238 T5di#%: s
DO ,1 SUB #2 <- #112 =2[U4<d!R
DO ,1 SUB #3 <- #112 yasKU6^R'
DO ,1 SUB #4 <- #0 gT6@0ANq
DO ,1 SUB #5 <- #64 B%Spmx8
DO ,1 SUB #6 <- #238 K%"cVqb2V
DO ,1 SUB #7 <- #26 1 ~#p3)B
DO ,1 SUB #8 <- #248 - '5OX/Szq
DO ,1 SUB #9 <- #168 }n JG<rY
DO ,1 SUB #10 <- #24 +EBoFeeIG
DO ,1 SUB #11 <- #16
: V#W
y
DO ,1 SUB #12 <- #158 *n%J#[e(
DO ,1 SUB #13 <- #52 P9D'L{yS/x
PLEASE READ OUT ,1 ?#917M
PLEASE GIVE UP ~V4&l3o
i
bwnK?ZA
Ka\%kB>*`
Java 3#Hx^H
public class Hello e
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{ N;6WfdA-
public static void main(String[] args) H A(e
{ 5:H9B
System.out.println("Hello, world!"); *xOrt)D=
} DHV#PLbN$
} T9+ ?A
l
+}@HtjM
[UHDN:y
JSP cHMS[.=;
<% 6 4da~SEn
out.print("Hello, world!"); Y@Kp'+t(!
%> W@x
UR-}51
z_p/.kQ'5
nEM>*;iE
MIXAL vWwnC)5
TERM EQU 19 the MIX console device number fH7o,U|
ORIG 1000 start address @E$PjdB5M
START OUT MSG(TERM) output data at address MSG AhARBgf<
HLT halt execution )5j%."
MSG ALF "MIXAL" mSzBNvci
ALF " HELL" }X3SjNd q
ALF "O WOR" vO2 o/
ALF "LD " rsR0V+(W
END START end of the program ,]'?Gd
ZAPT5
##!)}i
Nuva wKCHG/W
<..直接输出..> y$At$i>u
Hello, world! DT@6Q.
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<..或者..> #is:6Z,OEU
8uX1('+T*
<. .sA?}H#wb
// 不带换行 -zd*tujx
? "Hello, world!" @hiwq7[j
<;.Zms${@
// 或者 qF(F<$B
)BY\c7SG
// 带换行 {7)D/WY5
?? 'Hello, world!' OgfmyYMtc
.> Fr)G
h>
+QIM~tt)
|wZ8O}O{E
OCaml F}A@H<?
let main () = O=#FpPHrdw
print_endline "Hello world!";; PQsqi;=)
J8$G-~MeJ
vvLm9Tw
Pascal "|<\\HR
program Hello; rs3Uk.Z^'
begin
M? oK@i
writeln('Hello, world!');
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end. .Mw'P\GtM
b$nXljV4?
i=-zaboo
Perl 4XDR?KUM
#!/usr/local/bin/perl k|,pj^
print "Hello, world!\n"; 2@o_7w98
FG-w7a2mn
H>[1DH#b
PHP QtQku1{
<?php n~l )7_G
print("Hello, world!"); . oUaq|O
?> *tjE#TW
qbkvwL9
@M?N[LG
Pike a8-2:8Su
#!/usr/local/bin/pike t#~r'5va
int main() !Ljs9 =UF
{ #:Di1I9<O7
write("Hello, world!\n"); |$":7)eH!
return 0; 0iW]#O/
} &eT)c<yhyK
jpqq>Hbg_
I;L$Nf{v
PL/I O k_I}X
Test: procedure options(main); EW$ Je
declare My_String char(20) varying initialize('Hello, world!'); b1jh2pG(V
put skip list(My_String); 0i9y-32-
end Test; .
x~tEe
#JGy2Hk$^
+}X?+Epm
Prolog r+0"1\f3
goal -@G|i$!
write("hello,world!"). ]6</{b
V{fYMgv
0b=OK0n!%
Python 8<k0j&~J
#!/usr/local/bin/python J1Mm,LTO
print "Hello, world!" jcN84AaRFI
@?{n`K7{`
Pv`yOx&nE
REXX L._I"g5 H9
say "Hello, world!" Nm#VA.~
q,2]]K7y
`|i #)
Ruby B} gi /
#!/usr/bin/ruby nbw&+dcJ8
print "Hello, world!\n" i)\`"&.j>N
tOwwgf
q~r)B}
Scheme \CB{Ut+s
(display "Hello, world!") LS4c|Dv
(newline) cg<10KT
o)cd!,h
,Z#t-?
sed (需要至少一行输入) \*!?\Ko`W
sed -ne '1s/.*/Hello, world!/p' QR'"Zw&q5/
@h([c
}.4`zK&SB
Smalltalk AShJtxxa
Transcript show: 'Hello, world!' tz&=v,_jc
z['>`Kt
];^A8?
SNOBOL 6
EE7<&
OUTPUT = "Hello, world!" [Zl
END Q0!gTV
J:'cj5@
WO)rJr!C
SQL !~m)_Q5?~
create table MESSAGE (TEXT char(15)); tk<dp7y7
insert into MESSAGE (TEXT) values ('Hello, world!'); HLAWx/c,j"
select TEXT from MESSAGE; ,$mnD@)
drop table MESSAGE; \S }&QV