“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。 a<p
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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》。 n-OWwev)
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以下是用不同语言写成的Hello World程序的几个例子: !sK#zAR2
Ada ,"H?hFQ
with Ada.Text_Io; use Ada.Text_Io; <!!nI%NC
procedure Hello is )%#?3X^sI
begin I#c(J
Put_Line ("Hello, world!"); iS0 5YW
end Hello; dq1TRFu
j+0.=#{??
,%8$D-4#_
汇编语言 fI}c 71b`
%!wq:~B1
x86 CPU,DOS,TASM @_O3&ZK
MODEL SMALL .zwVCW,u
IDEAL ..$>7y}
STACK 100H a7 )@BzF#
LDX y}hm)
DATASEG ?N_)>&b
HW DB 'Hello, world!$' +$~8)95<B
ZgBckb
CODESEG |Gc&1*$
MOV AX, @data npj5U/
MOV DS, AX DpNX66O
MOV DX, OFFSET HW O3xz|&xY&
MOV AH, 09H iiN?\OO^~
INT 21H sL
mW\\kA>
MOV AX, 4C00H %mmxA6I
INT 21H .f%vDBJS
END hg&u0AQ2
hXnw..0"
@>Ek '~m
x86 CPU,GNU/Linux,NASM '\'7yN'
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). >3$uu+p1F
;Enter this into "hello.asm" then type: !Sfe{/$w
;"nasm -f elf hello.asm" PL!tk^;6-
;"ld hello.o -o hello" J~'~[,K
;"./hello" K*:Im#Q
1:5P%$?b
section .data ;data section declaration *vD/(&pQ1:
msg db 'Hello World!',0AH E6Q91Wz9f
len equ $-msg ;string length QRiF!D)Nk
0STk)>3$-
section .text ;code section declaration SZE `J:w
global _start ;entry point (start of execution) oVreP
_start: mov edx,len ;string length e
sGlMq
mov ecx,msg ;string start !xH,y
mov ebx,1 ;file handle: stdout n4R]+&*
mov eax,4 ;sys_write b<\G I7
int 80h ;kernel system call ~=Fk/
QU%N*bFW%P
mov ebx,0 ;return value Ks51:M
mov eax,1 ;sys_exit #'KY`&Tw&
int 80h ;kernel system call Tz2x9b\82
1sMV`qv>
!,R
x86 CPU,Windows,MASM32 ]%||KC!O
.386 !8Y3V/)NU
.model flat,stdcall %cd]xQpCp
option casemap:none i
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;Include 文件定义 _rG-#BKW8L
include windows.inc 3U>S]#5}
include user32.inc $Uy#/MX
includelib user32.lib du8!3I
include kernel32.inc +O,V6XRr
includelib kernel32.lib TftOYY.hQ
;数据段 i(z+a6^@|
.data iPz1eUj
szCaption db 'A MessageBox!',0 O/nqNQ?<
szText db 'Hello,world!',0 |<'10
;代码段 C~:b* X
.code '&/(oJ;O~
start: 4fD`M(wv
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Px$'(eMj^3
invoke ExitProcess,NULL ud.poh~|
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ItMl4P`|
end start M$#+W?m&
01-p
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Qk|( EFQ9
AWK d{?)q
BEGIN { print "Hello, world!" } qPp]K?.
2,+@#q
-5o?#%
BASIC Hc>([?P%t
传统版BASIC(例如GWBASIC): :^K~t!@
%odw+PhO
10 PRINT "Hello, world!" dPRtN@3
20 END z=u~]:.1O
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或在提示符输入: l;XUh9RF`A
TjT](?'o
?"Hello, world!":END
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DCz\TwzU
现代版BASIC(例如Quick BASIC): N4'
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Print "Hello, world!" z/pDOP Ku
YHJ'
以下的语句在Quick BASIC中同样有效: 7eTA`@v5A
;.L!%$0i#
? "Hello,world!" T..-)kL+p
69N1 mP
>Zi|$@7t-
BCPL K~P76jAe$
GET "LIBHDR" p0"BO4({{
Qh/lT$g
LET START () BE TeOFAIU
$( ?exALv'B
WRITES ("Hello, world!*N") cPx66Dh&
$) "pR $cS
<<i=+ed8eP
x/pC%25
Befunge gX/|aG$a!U
"!dlrow olleH">v KwY`<t1lA;
, $cyLI+uz|
^_@ AX/=}G
&mCs%l
*{HGLl|=
Brainfuck *sIi$1vHu
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< hg(KNvl
+++++++++++++++.>.+++.------.--------.>+.>. c>M_?::)0
D
"JMSL4r
goG]WGVr
C bDxPgb7N=
#include <stdio.h> fN~8L}!l
+SP!R[a
int main(void) Vx0MG{vG1
{ 7MR:X#2v>
printf("Hello, world!\n"); :h3#1fko
return 0; <t% Ao,"
} Fj'\v#h
Rh5@[cg%
# Lu4OSM+
C++ '&rw=.cU
#include <iostream> "-G.V#zI
NHst7$Y<
int main() >?H_A
{ :0i#=ODR
std::cout << "Hello, world!" << std::endl; C6Um6X9/i
return 0; ZS07_6.~
} @`#OC#
P1M|f4*
Tom}sFl][
C++/CLI GA({r i
int main() jFI]54,
{ \z(>h&
System::Console::WriteLine("Hello, world!"); 2n<qAl$t
} !&W"f#_Z
&QiAM`MbC=
]IN-
C# (C Sharp) hg)!m\g
class HelloWorldApp p?EEox
{ y}.y,\S0
public static void Main() 2d,wrC<'$
{ mE)x7
System.Console.WriteLine("Hello, world!"); M$DwQ}Z
} rElG7[+)p
} C={sE*&dYX
q{N lF$X
&q kl*#]
COBOL wpPxEp/
IDENTIFICATION DIVISION. c/,|[t
PROGRAM-ID. HELLO-WORLD. >rQ)|W=i
[C*Xk{e
ENVIRONMENT DIVISION. ~cWLu5
Pj^k
pjV
DATA DIVISION. ]}*G[[
^p
+LvZ87O^~
PROCEDURE DIVISION. J\,@Bm|1n{
DISPLAY "Hello, world!". X F0*d~4
STOP RUN. qCv}+d)
|wl")|b%
~}FLn9@*
Common Lisp lUm}nsp=X
(format t "Hello world!~%") lW@:q04Z$
(]GY.(F{
`qQQQ.K7)z
DOS批处理 pw(*X,gj
@echo off vErbX3RY2
echo "Hello, world!" aTsy)=N
p)AvG;
f]^ J,L9qz
Eiffel mAtG&my)
class HELLO_WORLD }1E_G
O>{t}6o
creation 8DmX4*
make 60SenHKles
feature ?N9adL &b
make is l7FZ;%&
local YjMbd?v
io:BASIC_IO jw&}N6^G
do $ET/0v"V
!!io <{P^W;N7
io.put_string("%N Hello, world!") FL*w(Br.
end -- make uvAy#,
end -- class HELLO_WORLD QyBK*uNdV
9=sMKc%!-
lqwJ F &
Erlang 3vEjf
-module(hello). _16&K}<
-export([hello_world/0]). ESXU,
qK]v
ui: >eYv
hello_world() -> io:fwrite("Hello, World!\n"). ff2.|20
kgib$t_7
FkkZyCqZ`
Forth #6#BSZ E
." Hello, world!" CR ^~hhdwu3a
{yl/T:Bh&
`~s,W.Eu4
Fortran _<&K]e@dp
WRITE(*,10) 7xa@wa?!L
10 FORMAT('Hello, World!') }G0.Lq+a
STOP Q{)F$]w
END jTxChR
A/W7;D
J0Rz.=Y
HTML ps4Wwk(
<HTML> 4w/t$lR
<HEAD> LxYM"_1A;
<TITLE> Hello World! </TITLE> /R+]}Lt~%*
</HEAD> azATKH+j
<BODY> f1,$<Y|qU
<p>Hello World!</p> _yXeX
</BODY> 71,0v`Z<
</HTML> 8aIq#v
jL[Is2<@
M,dzf
HQ9+ d1LTyzLr
H r5$?4t
/A`zy
DG%%]
INTERCAL 2ucsTh@
PLEASE DO ,1 <- #13 kA9 X!)2w
DO ,1 SUB #1 <- #238 \Q
BpgMi(
DO ,1 SUB #2 <- #112 sGm(Aax*0
DO ,1 SUB #3 <- #112 6d?2{_} ,
DO ,1 SUB #4 <- #0 c$UpR"+
DO ,1 SUB #5 <- #64 ]9l%
DO ,1 SUB #6 <- #238 Jb-QP'$@
DO ,1 SUB #7 <- #26 @=|
b$E
DO ,1 SUB #8 <- #248 PX>\j&
DO ,1 SUB #9 <- #168 %A Du[M.
DO ,1 SUB #10 <- #24 Bo\dt@0;
DO ,1 SUB #11 <- #16 X;[zfEB
DO ,1 SUB #12 <- #158 '%r@D&*vp
DO ,1 SUB #13 <- #52 =xQfgj
PLEASE READ OUT ,1 "/]tFY%Y
PLEASE GIVE UP \(v_",
mQ
`r`DW
>[3,qP]E
Java 88LbO(q\d
public class Hello OgpH{"
{ zk_hDhg&'
public static void main(String[] args) -W"0,.Dvg
{ x~Esu}x7
System.out.println("Hello, world!"); i1H80m s
} F/,<dNJ
} N[D\@o
:{= 'TMJ7
Q)i`.mHfFI
JSP OU964vv
<% R;m0eG`
out.print("Hello, world!"); R~?; KJ
%> vrEaNT$J-
oL/^[TXjH
.mU.eLM
MIXAL NGeeD?2~
TERM EQU 19 the MIX console device number B0SmE_u_N
ORIG 1000 start address Ej3hdi)
START OUT MSG(TERM) output data at address MSG 8t
35j
HLT halt execution u$ / ]59
MSG ALF "MIXAL" jtOsb91c}
ALF " HELL" '-~/!i+=
ALF "O WOR" UA u4x 7
ALF "LD " ?01""Om
END START end of the program K@u."eaD
"+JwS
$}c@S0%P"
Nuva 9%k.GE
<..直接输出..> OU5|m%CmO
Hello, world! 7 QJcRZ[lU
:^L]Da3
<..或者..> cNB$g )`
$Lbe5d?\
<. +g7nM7,1a
// 不带换行 %Yn)t3d
? "Hello, world!" av$_hEjo|D
|MR?8A^"
// 或者 J^a"1|
"jJ)hk5e
// 带换行 [<I
`slK
?? 'Hello, world!' zi&d
.> <UL|%9=~
9<r}s
#.t{g8W\C
OCaml Y,"MQFr(o
let main () = NB#*`|qt
print_endline "Hello world!";; 2cL)sP}
NKh{iSLm
~"YNG?Rre
Pascal :pu{3-n.
program Hello; %hb5C 4q
begin tLXw&hFk`g
writeln('Hello, world!'); 4'=N{.TtO
end. ._nKM5.
n^)9QQ
.v&h>@'m
Perl *w,gi.Y3
#!/usr/local/bin/perl ,DOmh<b
print "Hello, world!\n"; |6Z MxY
">&:(<
?i=!UN
PHP h4i$z-!
<?php ;i?!qB>baX
print("Hello, world!"); TRok4uc
?> odn`%ok
qP'g}Pc
bbkI}d%(Ng
Pike
>U/g*[>
#!/usr/local/bin/pike fb;"J+
int main() |;-r};
{ "kg$s5o
write("Hello, world!\n"); JB_`lefW,'
return 0; @h,$&=HY
} ~8{3Fc 0
sYI':UQe
'vIkA=
PL/I 5hK\YTU
Test: procedure options(main); LkB!:+v |B
declare My_String char(20) varying initialize('Hello, world!'); .4(f0RG
put skip list(My_String); *03/:q ^(
end Test; v('d H"Y
*?"{T;4u~O
k|C8sSH
Prolog 5z>\'a1U
goal 28yxX431S
write("hello,world!"). AAY UXY!
{\zr_v`g
9iNns;^`q
Python ;O11)u?/s|
#!/usr/local/bin/python u.FDe2|[)
print "Hello, world!" ,RO(k4
.p}Kl$K]
$ 3B?
REXX ;qK6."b`;
say "Hello, world!" EQ$9IaY.
I!O S&8:u
~=ys~em e
Ruby Acv{XnB
#!/usr/bin/ruby tY=TY{ RY
print "Hello, world!\n" mIo7 K5z{
WfNMyI
ptQ(7N
Scheme 0z#kV}wE
(display "Hello, world!") ;)a9Y?
(newline) y*(j{0yd
uJ\Nga<?
`%p6i|
_Q
sed (需要至少一行输入) Zx 1z
hc
sed -ne '1s/.*/Hello, world!/p' sR.j~R
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