“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。 OYb:);o,iE
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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》。 4vkqe6
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以下是用不同语言写成的Hello World程序的几个例子: "9N;&^I
Ada !1A< jL
with Ada.Text_Io; use Ada.Text_Io; L"0?g(<
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procedure Hello is fN:FD`
begin jM-5aj[K
Put_Line ("Hello, world!"); H
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end Hello; ;lt8~ea
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77wod}h!:
汇编语言 ,DEcCHr,
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x86 CPU,DOS,TASM Vi0D>4{+
MODEL SMALL QjYw^[o
IDEAL %;<g!Vw.k
STACK 100H L|;sB=$'{
JxEz1~WK &
DATASEG !DHfw-1K
HW DB 'Hello, world!$' P^U.VXY}
H^vA}F`
CODESEG 4$U^)\06W
MOV AX, @data &5[+p{2
MOV DS, AX E]S:F3
MOV DX, OFFSET HW Prc1U)nfo
MOV AH, 09H LvZ',u}
INT 21H $@L2zl1
MOV AX, 4C00H q!~DCv df
INT 21H H]f[r~
END ]Zc\si3i&
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x86 CPU,GNU/Linux,NASM 9}tl@
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 3\C+g{}e
;Enter this into "hello.asm" then type: 2!9Zw$
;"nasm -f elf hello.asm" w@n}DCFt
;"ld hello.o -o hello" C}DIm&))
;"./hello" 1TF S2R n
BHErc\ITP
section .data ;data section declaration ![J_6f}!
msg db 'Hello World!',0AH ~k}O"{
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len equ $-msg ;string length SUW=-M
u0g"x_3
section .text ;code section declaration WT3g31
global _start ;entry point (start of execution) :uC9 #H"b
_start: mov edx,len ;string length 4^d).{&X
mov ecx,msg ;string start c++q5bg@)
mov ebx,1 ;file handle: stdout JZE@W-2
mov eax,4 ;sys_write j%J>LeTca
int 80h ;kernel system call ;18u02z^
/E i e5p
mov ebx,0 ;return value |2rOV&@l9
mov eax,1 ;sys_exit 'C#[iRG4
int 80h ;kernel system call k2PK4Ua_}q
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6\?
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x86 CPU,Windows,MASM32 L=M'QJl9
.386 U;"J8
.model flat,stdcall
C?'s
option casemap:none s<aG
;Include 文件定义 |`V=hqe{
include windows.inc !$!%era`
include user32.inc iM6(bmc.
includelib user32.lib b*{UO
include kernel32.inc $jv"$0Fc
includelib kernel32.lib <HIM
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;数据段 ]<r.{EJ
.data Q0,eE:
szCaption db 'A MessageBox!',0 #JXXq%4
@
szText db 'Hello,world!',0 UN:qE oS
;代码段 '*
/$66|
.code D,(:))DmR
start: ,ei=w,O
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK T7O)
invoke ExitProcess,NULL %=\*OIhl
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> e$JATA:j
end start w*o2lg9
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XdOntP *a
AWK CVEo<Tz
BEGIN { print "Hello, world!" } _sy]k A
@L0)k^:
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BASIC >B*zzj
传统版BASIC(例如GWBASIC): ~,xso0
@U1t~f^
10 PRINT "Hello, world!" P97i<pB Y_
20 END gkKNOus
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或在提示符输入: U)Tl<l<
vz1I/IdTd
?"Hello, world!":END #TH(:I=[
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现代版BASIC(例如Quick BASIC): b^P\Q s*m
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Print "Hello, world!" P_75-0G
036QV M$
以下的语句在Quick BASIC中同样有效: bqx2lQf,_
HEhBOER?
? "Hello,world!" )p:+!sX(
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I9`ZK2S
BCPL \g)?7>M |
GET "LIBHDR"
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sb?!U"v.'
LET START () BE ,Z! I ^
$( C',uY7}<
WRITES ("Hello, world!*N") pr,1pqiAf
$) yT='V1
>Ad`_g6Wew
,Ik~E&Ku2'
Befunge _u6MSRX[6$
"!dlrow olleH">v `gJ$fTi&
, T,PN6d
^_@ e#F3KLSL`
%[azMlp<
*!3qO^b?
Brainfuck c>+68<H
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ,pQ[e$u1
+++++++++++++++.>.+++.------.--------.>+.>. 7m?fvKy
NGO?K?
8qxZ7|Y@
C |Z+qaq{X
#include <stdio.h> %P(2uesd
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int main(void) 8=?U7aw
{ "I{Lcn~!@
printf("Hello, world!\n"); ltNY8xrdGN
return 0; nY\X!K65
} z92Xc
>!tfvM2X{
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C++ <JvYCWX`
#include <iostream> cjd-B:l
S?VKzVDB.S
int main() 7-\wr^ll3
{ y>d`cRy
std::cout << "Hello, world!" << std::endl; U!JmSP
return 0; Xf
mN/j2
} Wvl'O'R
=@X?$>'
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C++/CLI fGe"1MfU
int main() W2M[w_~QE
{ MfKru,LSh
System::Console::WriteLine("Hello, world!"); P:1eWP
} 6KPjZC<
TB84}
QA)W( 1
C# (C Sharp) ilZ5a&X;
class HelloWorldApp !0):g/2h
{ iQLP~Z>,T
public static void Main() X\*H7;k,
{ K5??WB63B
System.Console.WriteLine("Hello, world!"); Kq+vAp).
} WHfl|e
} -_]Ceq/
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,Z7Ky*<j
COBOL Fx)><+-
IDENTIFICATION DIVISION. VD =f 'D
PROGRAM-ID. HELLO-WORLD. #c'}_s2F[
aQzmobleep
ENVIRONMENT DIVISION. 3x
z
z*
<
` 1y @c"t
DATA DIVISION. |It{L0=U
*/$] kE
PROCEDURE DIVISION. ,JPDPI/a
DISPLAY "Hello, world!". oU*e=uehj
STOP RUN. Y ._Om}H
,jD-fL/:
.f!:@fX>=
Common Lisp 47A[-&y*X
(format t "Hello world!~%") j)juvat
fWF!% |L
s!Iinc^p
DOS批处理 h///
@echo off vy>(?[
echo "Hello, world!" h96<9L
r]wy-GT
y
S<&d#:"
Eiffel U<'z,Px6
class HELLO_WORLD IA}.{zY~|
2|`Mb~E;
creation s=z$;1C
make n^l5M^.
feature I+jc
make is 6Yqqq[#V/
local vSH-hAk
io:BASIC_IO )5o6*(Y
do uOZSX.o^
!!io PMvm4<
io.put_string("%N Hello, world!") 0$U\H>r
end -- make l^$U~OB8k
end -- class HELLO_WORLD FR]uCH
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aghlYcPg
Erlang 4=& d{.E
-module(hello). ]J/;Xp
-export([hello_world/0]). 6k+tO%{~
i=fhK~Jd
hello_world() -> io:fwrite("Hello, World!\n"). )]m4FC:
W4h ]4X
sp0_f;bC
Forth )_?H BTG
." Hello, world!" CR UCo<ie\V
b8$%=Xp
K;TTGK
Fortran (@O,U
WRITE(*,10) yC!>7@m
10 FORMAT('Hello, World!') D?H|O[
STOP Us>
END 8*uaI7;*
!&v"+ K3lU
t6)R37
HTML |;U3pq)
<HTML> a<((\c_8G
<HEAD> *;lb<uLv
<TITLE> Hello World! </TITLE> xz7CnW1
</HEAD> RGY#0 .Z}
<BODY> bPl'?3
<p>Hello World!</p> i/C0
(!
</BODY> -}8r1jQH;
</HTML> e
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x"Ij+~i{l
V@1,((,l
HQ9+ c5[~2e
H gDH|I;!
E
<r;J
ZMK1V)ohn
INTERCAL kkj_k:Eah
PLEASE DO ,1 <- #13 zThut!O
DO ,1 SUB #1 <- #238 e)F_zX
DO ,1 SUB #2 <- #112 W)Yo-%
DO ,1 SUB #3 <- #112 V<KjKa+sG
DO ,1 SUB #4 <- #0 Xxm7s S
DO ,1 SUB #5 <- #64 \,I{*!hw
DO ,1 SUB #6 <- #238 mxwG~a'_
DO ,1 SUB #7 <- #26 sq8O+AWl
DO ,1 SUB #8 <- #248 1X?q4D"
DO ,1 SUB #9 <- #168 \PmM856=ms
DO ,1 SUB #10 <- #24 H;FzWcm
DO ,1 SUB #11 <- #16 c&`]O\D-c
DO ,1 SUB #12 <- #158 F-Ku0z]){?
DO ,1 SUB #13 <- #52 *kJa$3*r
PLEASE READ OUT ,1 |Y(
PLEASE GIVE UP ,%y!F3m
Jf@Xz7{z
q+lCA#Sx
Java h?GE-F
public class Hello 2k`Q+[?{q>
{ ~k ]$J|}za
public static void main(String[] args) 8,B#W#*{
{ G/KTF2wl7
System.out.println("Hello, world!"); X8XE_VtP
} 2nSz0 .
} 1flB A,6L
6(q8y(.`
yv> 6u7
JSP ]:4\rBR3
<% g{m~TVm'
out.print("Hello, world!"); X(C=O?A
%> 8BnsYy)j
YsRq.9Mr
A5G@u}YS5
MIXAL )/bv@Am
TERM EQU 19 the MIX console device number Ek '%%%
ORIG 1000 start address )Qo^Mz
START OUT MSG(TERM) output data at address MSG }9+Vf'u|l
HLT halt execution }jNVR#D:
MSG ALF "MIXAL" .WGrzhsV
ALF " HELL" U
a1Z,~ *
ALF "O WOR" c{i\F D
ALF "LD " "
_TAo
END START end of the program 5N|hsfkx
NRe=O*O
asbFNJG{
Nuva 6N.MCB^
<..直接输出..> *+J`Yk7}
Hello, world! O+~@S~
mxCqN1:#
<..或者..> ' KNg;
3X1
U
<. \YH*x`
// 不带换行 w|ct="MG
? "Hello, world!" XBTjb
_+&/P&
// 或者 \Iz-<:gA'
F=;nWQ&
// 带换行 ;O({|mpS\
?? 'Hello, world!' NcIr;
}
.> {=P}c:iW
W!a'KI'
q9(hn_X@/
OCaml 1_)Y{3L
let main () = |eej}G(,m}
print_endline "Hello world!";; sTi3x)#xB
#-g2p?+i&
HU-#xK
Pascal +3-f$/po
program Hello; FF30VlJ
begin |<LW(,|A
writeln('Hello, world!'); U{3Pk0rZ
end. } DkdF
fvoPV&:
ER<Z!*2
Perl snny!
0E\m
#!/usr/local/bin/perl qB3=wFI
print "Hello, world!\n"; @P<Mc)o^
` =I@W
q&: t$tSS
PHP !f#[4Xw
<?php (KphAA8
print("Hello, world!"); *Di ;Gf@
?> dca?(B!'6
D (">bR)1
l'"Ici#7Ls
Pike }<H0CcG
#!/usr/local/bin/pike = /=?l
int main() /6#i$\ j
{ =UZm4=T
write("Hello, world!\n"); \Jr7Hy1;
return 0; Xm^/t#
} o 0H.DeP
hKN/&P^
ajD/)9S
PL/I VOrBNu
Test: procedure options(main); ?qczMck_
declare My_String char(20) varying initialize('Hello, world!'); |Q#CQz
put skip list(My_String); j 4eq.{$
end Test; \l/<[ZZ
+Pb@@C&
":01M},RA
Prolog Yr 1k\q
goal 3xpygx9
write("hello,world!"). WI\h@qSB
Vpf7~2[q%
E
<h9o>h
Python X%Ta?(9|.^
#!/usr/local/bin/python w;V+)r?w
print "Hello, world!" ^e1mK4`
u S{WeL6%
OBZ:C!
REXX SHe547X1
say "Hello, world!" 4 _Idf
6Zq7O\
V%n7h&\%
Ruby \Oa11c`6
#!/usr/bin/ruby .\|}5J9W
print "Hello, world!\n" =E:a\r
wL"
2Cm
VKHzGfv
Scheme =~{W;VZt'
(display "Hello, world!") L7$1 rO<
(newline) 2<^eVpNJR
5OHF=wh
X5o{d4R L
sed (需要至少一行输入) O*hQP*Rs
sed -ne '1s/.*/Hello, world!/p' J"yq)0
@s~*>k#"#
v^1n.l %E
Smalltalk Ve\P ,.
Transcript show: 'Hello, world!' _t\)W(E&
8fQaMn4V
E3h-?ugO'
SNOBOL 3 bll9Ey
OUTPUT = "Hello, world!" pL{:8Ed
END 5s1XO*s)>X
k\lU
Q\/O5
JS0957K
SQL .Wvg{ S-
create table MESSAGE (TEXT char(15)); o\:vxj+%*
insert into MESSAGE (TEXT) values ('Hello, world!'); f5hf<R),A
select TEXT from MESSAGE; *^.OqbO[U
drop table MESSAGE; c$R<j'7
[knwp$
U#F(%b-LC
Tcl e><