“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。 l-mf~{
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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》。 P Zc{wbjp&
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以下是用不同语言写成的Hello World程序的几个例子: 1S26Y|L)
Ada u/8urxpy
with Ada.Text_Io; use Ada.Text_Io; lC&B4zec
procedure Hello is /P-Eg86V'
begin r+WY7'c
Put_Line ("Hello, world!"); >S:>_&I`I
end Hello; o>' 1ct
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]2Q:&T
汇编语言 yHL5gz@k
C*I~14
x86 CPU,DOS,TASM 3h|:ew[
MODEL SMALL k)a-odNrb
IDEAL L--(Y+vmf
STACK 100H 7~V,=WEe
dq{wFI)
DATASEG AqzPwO^
HW DB 'Hello, world!$' }`,}e 259
oIP<7gz
CODESEG Lz9t9AoB
MOV AX, @data Q< q&a8~
MOV DS, AX "x*5g*k
MOV DX, OFFSET HW 5z>kz/uxW
MOV AH, 09H k'K&GF1B
INT 21H '`*{ig
MOV AX, 4C00H Pkbx/\
INT 21H oe:@7stG
END @!:~gQ
l`vb
ByK!r~>Z1Q
x86 CPU,GNU/Linux,NASM ?(^HjRUY
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). E\(dyq/
;Enter this into "hello.asm" then type: _IOt(Zb(
;"nasm -f elf hello.asm" lc71Pp>
;"ld hello.o -o hello" v3i]z9`
;"./hello" !)(c_ uz
. .|>|X4
section .data ;data section declaration s2{d<0x?v
msg db 'Hello World!',0AH Z/wKUK;
len equ $-msg ;string length D{{ME8
%`P6a38j
section .text ;code section declaration R`F54?th
global _start ;entry point (start of execution) HCI|6{k
_start: mov edx,len ;string length y@kRJ 8d
mov ecx,msg ;string start V2I"m
mov ebx,1 ;file handle: stdout 4Em mh=A
mov eax,4 ;sys_write X&[S.$_U
int 80h ;kernel system call $`Z-,AJc
hwaU;> F
mov ebx,0 ;return value $EB&]t+
mov eax,1 ;sys_exit ^0/FZ)V8
int 80h ;kernel system call +%'S>g0W=
Z. ))=w6G
VV*Z5U@b
x86 CPU,Windows,MASM32 }jQxwi)
.386 "i\rhX
.model flat,stdcall 93-UA.+g
option casemap:none ) /kf
;Include 文件定义 ' {L5 3cH=
include windows.inc S`Jo^!VJ4
include user32.inc Vs-])Q?7J
includelib user32.lib ]{r*Z6bs
include kernel32.inc |=^p`CT
includelib kernel32.lib @{_L38. Nw
;数据段 zoV4Gl
.data P,x'1`k~
szCaption db 'A MessageBox!',0 TX96
^EoH
szText db 'Hello,world!',0 ZxmMw
;代码段 Zz<k^
.code hpD\,
start: y\DR,$Py
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 9 wun$!>&
invoke ExitProcess,NULL =kz(1Pb
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> "F(LTppy
end start i(^&ZmG
v`"z
Q`"gKBN1
AWK QkXnXu
BEGIN { print "Hello, world!" } 9Ij=~p]p
%T hY6y(
]xlV;m
BASIC 4!pMZ<$3
传统版BASIC(例如GWBASIC): }Km+5'G'U
cnQ;6LtFTz
10 PRINT "Hello, world!" c/Fy1Lv\
20 END l,n0=Ew
jP?YV
或在提示符输入: ]d$:R`;
U~j:b {
?"Hello, world!":END 4+ BWHV
R36BvW0X
现代版BASIC(例如Quick BASIC): :}\w2W E[
>hkmL](^
Print "Hello, world!" ~s@PP'!
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以下的语句在Quick BASIC中同样有效: eSNwAExm
}Ut*Y*
? "Hello,world!" Lo^0VD!O
|H`}w2U[j
"|?zQ?E
BCPL @6eM{3E.
GET "LIBHDR" nRYHp7`
v71j1Q}6
LET START () BE "P)f,n
$( Mu,}?%
WRITES ("Hello, world!*N") {9kH<,PJ;!
$) S]E1+,-*
`0.<
-nVQB146^
Befunge uhi(Gny.
"!dlrow olleH">v M#BM`2!s
, P.L$qe>O
^_@ qPEtMvL
#
E+LAE/v@
\qx$h!<
Brainfuck kvWP[! j?)
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< OAoTsqj6
+++++++++++++++.>.+++.------.--------.>+.>. ~*OQRl6F
\J*~AT~5q
(twwDI
C p"A2N+
#include <stdio.h> KxyD{W1
N/wU P
int main(void) X$aN:!1
{ F't4Q
printf("Hello, world!\n"); x=1Iuc;&3
return 0; [$PW {d8|
} N03)G2
Y?ADM(j
+#%#QL
C++ BE`{? -G
#include <iostream> eI?|Ps{S
=:)p\{B
int main() }HO3D.HE^
{ ,8~qnLy9
std::cout << "Hello, world!" << std::endl; 'Z(KE2&?
return 0; v|IPus|>
} _Xs(3V@'}
EW$.,%b1
,"MRA
C++/CLI |;~kHc$W
int main() <SK%W=
{ 5)tDgm
System::Console::WriteLine("Hello, world!"); >3{#S:
} q1rBSlzN
DRp h?V\
Mnj\t3:
C# (C Sharp) 9|kc$+(+6
class HelloWorldApp V*xo3hU
{ Hz?C9q3BX
public static void Main() \<cs:C\h7
{ v[k;R
System.Console.WriteLine("Hello, world!"); ZGILV
} /INjP~C
} $KSdNFtM)A
GyirE`
MHl ffj
COBOL U
+c?x2\
IDENTIFICATION DIVISION. UE:';(t
PROGRAM-ID. HELLO-WORLD. |p4D!M+$7
g8=j{]~C
ENVIRONMENT DIVISION. }>q%##<n
Uq}F rK}
DATA DIVISION. #6fQ$x(F#j
54X=58Q
PROCEDURE DIVISION. |hx"yy'ux
DISPLAY "Hello, world!". NOC8h\s}(
STOP RUN. {RG4 m{#9
v'0WE
HuVx^y`
@
Common Lisp +c7e[hz
(format t "Hello world!~%") Ly\ `
8i
epG
@fI1|v=eF
DOS批处理 SRU}-
@echo off N>zpxU {
echo "Hello, world!" 35q4](o9"
)6~s;y!
[h5~1N
Eiffel fGZZ['E
class HELLO_WORLD m`;dFL7"E
(]_smsok
creation UF_?T.Rl^
make dBWi1vTF
feature D)O2=aQ;]
make is p`+=)
n
local [8kufMY|
io:BASIC_IO `;`fA|F^
do VVd9VGvh
!!io [6ycs[{!
io.put_string("%N Hello, world!") 4Nb&(p
end -- make "YC5viX
end -- class HELLO_WORLD 9$
VudE>;
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g!QX#_~Il
Erlang 2|6E{o
-module(hello). `>HM<Nn-0
-export([hello_world/0]). @IXvp3r
"dkDT7
hello_world() -> io:fwrite("Hello, World!\n"). /JqNiqvh
>'eY/>n{
j1Ns|oph1
Forth bjL8Wpk
." Hello, world!" CR o4.?m6d
7>-"r*W +z
3rxB]-
Fortran Th'B5:`
WRITE(*,10) zfsGf'U
10 FORMAT('Hello, World!') =qJlSb
STOP No\3kRB4bi
END qUSy0SQ/l
b41f7t=
IPVD^a?
HTML Kggc9^ 7
<HTML> _c z$w5`
<HEAD> s)A=hB-V
<TITLE> Hello World! </TITLE> -X]?ql*%`
</HEAD> F.Sc2n@7-
<BODY> .or1*-B K
<p>Hello World!</p> RJ+["[k
</BODY> za,JCI
</HTML> Md*~hb8J
/bSAVSKR
iBXS
HQ9+ a_T3<
H J<vVsz+7:
'kBq@>
dzbFUDJ
INTERCAL af>^<q
PLEASE DO ,1 <- #13 O0Pb"ou_h.
DO ,1 SUB #1 <- #238 2ophh/]
DO ,1 SUB #2 <- #112 +Oafo|%
DO ,1 SUB #3 <- #112 d71|(`&
DO ,1 SUB #4 <- #0 `Eg~;E:
DO ,1 SUB #5 <- #64 .T\jEH8E
DO ,1 SUB #6 <- #238 ,hVDGif
DO ,1 SUB #7 <- #26 v =]!Po&Q-
DO ,1 SUB #8 <- #248 /8O;Q~a
DO ,1 SUB #9 <- #168 UhX)?'J
DO ,1 SUB #10 <- #24 Zk+c9, q
DO ,1 SUB #11 <- #16 %wQE
lkB
DO ,1 SUB #12 <- #158 qS!U1R?s
DO ,1 SUB #13 <- #52 fG,)`[eD!_
PLEASE READ OUT ,1 m\.(-
PLEASE GIVE UP 2:jWO_V@
6JB*brO
E4cPCQyeH
Java lzbAx
public class Hello lJJ`aYDp
{ !+)5?o
public static void main(String[] args) v.!e1ke8D*
{ Q/%]%d
System.out.println("Hello, world!"); 0s72BcP
} WNK)IC~c
} th^&wp
dcH@$D@~S
^Z>Nbzr{
JSP {3qlx1w
<% -}CMNh
out.print("Hello, world!"); K[^BRn
%> [r0`D^*=
ukDaX
2{9%E6%#
MIXAL 2]V&]s8Wi=
TERM EQU 19 the MIX console device number DyCnL@
ORIG 1000 start address >9+h2B
START OUT MSG(TERM) output data at address MSG (hi{i
HLT halt execution 2DXV~>
MSG ALF "MIXAL" Q35D7wo'}
ALF " HELL" IIY3/
ALF "O WOR" w{"ro~9o
ALF "LD " 18WJ*q7:
END START end of the program ]
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nc9sfH3
~N]pB]/][
Nuva gkFw=Cd
<..直接输出..> 3y}8|ML
Hello, world! E#VF7 9L
=5q_aK#i
<..或者..> W690N&Wz
K#kMz#B+i
<. _-:CU
// 不带换行 .!)i
? "Hello, world!" a^7HI,
uWkn}P
// 或者 @ruWnwb
y41~
// 带换行 A(D3wctdr
?? 'Hello, world!' PlRcrT"#w
.> B'hN3.
dfMi]rs!<
sP@7%p>wt
OCaml (2(y9r*1
let main () = #A 7|=E
print_endline "Hello world!";; jL0=a.;
eZ|_wB'r
lQqP4-E?
Pascal 5I&Dk4v
program Hello; Y(;u)uN_
begin ^ pNA_s!S
writeln('Hello, world!'); Ov@vNj&
end. j_0xE;g"]
yqKSaPRA
ziXI$B4-
Perl N gagzsJ=
#!/usr/local/bin/perl Vtv1{/@+c
print "Hello, world!\n"; OjurfVw
jk{m8YP)E
C#@-uo2
PHP B)BR
y%
<?php |e91KmiqJ
print("Hello, world!"); Ge ?Q)N
?> +ctJV>
w,-4A
o2x
Sr>5V
Pike U"535<mR
#!/usr/local/bin/pike ]92=PA>75
int main() >rY^Un{Z
{ 3
p!t_y|SX
write("Hello, world!\n"); jJV1 /]TJ
return 0; D77s3AyHK
} "eIE5h
TGZr
[
+R',$YzD
PL/I v9 8s78
Test: procedure options(main); F./P,hhN9
declare My_String char(20) varying initialize('Hello, world!'); "h:#'y$V
put skip list(My_String); hu5o{8[
end Test; ~_|CXPiQ8
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