“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。 u|AMqS
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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》。 p0zC(v0*
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以下是用不同语言写成的Hello World程序的几个例子: vo*oCfm
Ada zSfUM.fM
with Ada.Text_Io; use Ada.Text_Io; `W~
procedure Hello is R0tT4V+
begin ~ |A0*
Put_Line ("Hello, world!"); e:'56?|
end Hello; qT5"r488
,&M#[>\(3
wi
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汇编语言 +ls`;f
dz+Dk6"R
x86 CPU,DOS,TASM g\.$4N
MODEL SMALL ,3f>-mP
IDEAL ku]?"{Xx
STACK 100H URbB2
Bi
Jx}-Y*
o
DATASEG j_<!y(W
HW DB 'Hello, world!$' ysIhUpd
aHpZhR|f$
CODESEG m26YAcip}
MOV AX, @data +> !nqp
MOV DS, AX \$Wpt#V
MOV DX, OFFSET HW u?dPCgs;h
MOV AH, 09H U887@-!3
INT 21H 'xkl|P>=],
MOV AX, 4C00H 7f ub^'_
INT 21H =IQ}Y_xr
END =dKjTBR S'
{ ,c*OR
kVKAG\F
x86 CPU,GNU/Linux,NASM _]4p51r0
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). pl1CPxSdO
;Enter this into "hello.asm" then type: >JS^yVk
;"nasm -f elf hello.asm" >&S}u\/
;"ld hello.o -o hello" <YU4RZ
;"./hello" YkB@fTTS
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section .data ;data section declaration g([:"y?
msg db 'Hello World!',0AH C]5 kQ1Og
len equ $-msg ;string length A7+ZY,
#*_!Xc9f
section .text ;code section declaration ^w~B]*A:"
global _start ;entry point (start of execution) H~Vf;k>
_start: mov edx,len ;string length 6V JudNA
mov ecx,msg ;string start $'Mf$h
mov ebx,1 ;file handle: stdout ;2&"
mov eax,4 ;sys_write breF,d$
int 80h ;kernel system call =%IyR
!^su=c
mov ebx,0 ;return value 8t*sp-cy|
mov eax,1 ;sys_exit At=d//5FFP
int 80h ;kernel system call H#;*kc
a4
GK'p$`oJm
LPJ7V`!k
x86 CPU,Windows,MASM32 b=:u d[h
.386 04;s@\yX4
.model flat,stdcall X]@"ZV[
option casemap:none ~,1Sw7rE
;Include 文件定义 R`a~8QVh&5
include windows.inc ([<HFc`
include user32.inc $B%KkD
includelib user32.lib Ta?}n^V?;
include kernel32.inc N2A6C$s
includelib kernel32.lib '0q$qN
;数据段 *qO)MpG{
.data 0,ryy,2
szCaption db 'A MessageBox!',0
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szText db 'Hello,world!',0 TQ4L~8
;代码段 Ri" hU/H{
.code vFR*3$R
start: A2M(
ad
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK =#W:z.w
invoke ExitProcess,NULL b}0h()v
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 9_:"`)]3B
end start r@zT!.sc!
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AWK 04|ZwX$>+
BEGIN { print "Hello, world!" } <.4(#Ebd
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BASIC EA6l11{Gk1
传统版BASIC(例如GWBASIC): [q[37;ZEQ
H"AL@=
10 PRINT "Hello, world!" ")uKDq
20 END 9!Mh(KtQ
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或在提示符输入: g[pU5%|"[
-\?-
?"Hello, world!":END xWzybuLp
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现代版BASIC(例如Quick BASIC): a&b/C*R_
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Print "Hello, world!" r]p3DQ
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以下的语句在Quick BASIC中同样有效: {ac$4#Bp[B
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? "Hello,world!"
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vNs%e/~vj
BCPL <<MpeMi
GET "LIBHDR" gp`@dn';
;(`bP
LET START () BE xE<H@@w
$( ~-7/9$ay5
WRITES ("Hello, world!*N") Ex
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$) hp'oiR;~w
=exCpW>
C][hH?.
Befunge L4/ns@e
"!dlrow olleH">v n~yKq"^
, $"/l*H\h
^_@ @r*GGI!
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Brainfuck )Ac,F6w
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< +S(# 7
+++++++++++++++.>.+++.------.--------.>+.>. 3/n?g7B
?; W"=I*3
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C .-rz30xT
#include <stdio.h> \T_ZcV
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int main(void) U U_0@V<
{ /=6_2t#vA
printf("Hello, world!\n"); qco'neR"z
return 0; % E1r{`p
} ZNw|5u^N
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> "F-1{
C++ ]gPx%c
#include <iostream> -&2Z/qM&!
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int main() wL),/i&<
{ n zaDO-2!
std::cout << "Hello, world!" << std::endl; #VX]trh,
return 0; O6y:e#0z
} j67a?0<C2U
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C++/CLI GW>F:<p
int main() &qXobJRM
{ =H;n$ -P
System::Console::WriteLine("Hello, world!"); ]"V_`i7Z
} ZXQ5fBx
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; j.d
C# (C Sharp) 8X`DFeJ
class HelloWorldApp 3 twA5)v
{ W'vek uM
public static void Main() 'Jf
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{ A` _dj}UF
System.Console.WriteLine("Hello, world!"); 6t; ;Fz
} q("XS
} $5 G(_
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^oPFLez56
COBOL _=I1
IDENTIFICATION DIVISION. 'hr_g* i
PROGRAM-ID. HELLO-WORLD. M%ecWr!tj
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ENVIRONMENT DIVISION. +C!GV.q[
:(US um
DATA DIVISION. WZ?>F
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PROCEDURE DIVISION. N@PwC(
DISPLAY "Hello, world!". p}pRf@(`\
STOP RUN. .S,E=
,4"N7_!7
> .NLmzUX
Common Lisp e+BZoK ^
(format t "Hello world!~%") ZOPK
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+&u/R')?6r
DOS批处理 PR|z -T
@echo off :|V650/
echo "Hello, world!" ?QffSSj[s
Y(6evo&IR
E}9wzPs
Eiffel mF@7;dpr
class HELLO_WORLD hA 5p'a+K
{c)\}s(}F
creation V $I8iVGL
make %(
7##f_
feature P.Bwfa
make is | I:@:
local eV}" L:bgJ
io:BASIC_IO B\R X
do ShC$ue?Q
!!io ':_9o5I
io.put_string("%N Hello, world!") wyX3qH
end -- make w3q'n%
end -- class HELLO_WORLD mTu>S
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Erlang V.
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-module(hello). &X:;B'
-export([hello_world/0]). 8:c=h/fa
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hello_world() -> io:fwrite("Hello, World!\n"). fWJpy#/^*K
toGd;2rl
eef&ZL6g
Forth t!3s@
." Hello, world!" CR O#;sY`fy_M
`oNJ=,p
%bTuE' `b
Fortran 4Lg
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WRITE(*,10) sDNWB_~
10 FORMAT('Hello, World!') \;MP|:{pU
STOP r}qDvC D
END py\:u5QS
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g|uyQhsg
HTML
!D['}%
<HTML> #%QHb,lhl
<HEAD> G?@W;o)
<TITLE> Hello World! </TITLE> }I
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</HEAD> }&/>v' G
<BODY> nxhlTf>3
<p>Hello World!</p> :y7K3:d3
</BODY> :AlvWf$d
</HTML> !dwZ` D
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a
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{Ni]S$7
INTERCAL Ojz'p5d`>
PLEASE DO ,1 <- #13 Lqxhy s
DO ,1 SUB #1 <- #238 vrb@::sy0T
DO ,1 SUB #2 <- #112 v\|jkzR5Y
DO ,1 SUB #3 <- #112 `w#VYs|k
DO ,1 SUB #4 <- #0 nxV!mh_
DO ,1 SUB #5 <- #64 O EaL2T
DO ,1 SUB #6 <- #238 6oLOA}q
DO ,1 SUB #7 <- #26 eb`3'&zV&)
DO ,1 SUB #8 <- #248 AP%R*0]
DO ,1 SUB #9 <- #168 >?K=l]!(*
DO ,1 SUB #10 <- #24 v)*MgfS
DO ,1 SUB #11 <- #16 g]Y%c73
DO ,1 SUB #12 <- #158 k%gj
DO ,1 SUB #13 <- #52 TaSS) n
PLEASE READ OUT ,1 OWrQKd
PLEASE GIVE UP ^vM6_=g2E%
F%a&|X
D"aK;_W@h
Java Htr]_<@
public class Hello s9"X.-!
{ .gfi9J
public static void main(String[] args)
)nf%S+KV
{ ?"
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System.out.println("Hello, world!"); 8y6dT
} *#>(P
} pLe4dz WA
D~ 3@v+d
MzUKp"
JSP x[};x;[ZE
<% Qq.$!$
out.print("Hello, world!"); bP-(N14x+
%> b-8@_@f|g
{+#{Cha
i|z=WnF$&
MIXAL &)6}.$`
TERM EQU 19 the MIX console device number 2?%4|@*H?
ORIG 1000 start address @`
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START OUT MSG(TERM) output data at address MSG &iw,||#
HLT halt execution HdtGyh6X0
MSG ALF "MIXAL" ,nL~?h-Zh
ALF " HELL" j[i*;0) |
ALF "O WOR" p5E
okh
ALF "LD " !yj1X
Ar
END START end of the program cO{NiRIb
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Nuva 7.VP7;jys
<..直接输出..> ]tu
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Hello, world! M887 Q'HSi
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<..或者..> aNKw.S>
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<. *JX$5bZsI
// 不带换行 &Qda|
? "Hello, world!" NLpKh1g
SaGI4O_\s
// 或者 } 'xGip@W
%8I^&~E1
// 带换行 G"&$7!6[Y
?? 'Hello, world!' H+I,c1sF
.> -w2^26ax
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"2%R?
OCaml D3aX\ NGP
let main () = KO8vUR*2R
print_endline "Hello world!";; 2m*ugBO;
p'^}J$
3(J>aQZuI
Pascal vcy1itY
program Hello; 5!9y nIC+>
begin MHWc~@R
writeln('Hello, world!'); ?MSZO]Q4+
end. [V_mF
/Z*$k{qIR&
L|APX y]>
Perl W (TTsnnx
#!/usr/local/bin/perl .(Ux1.0C
print "Hello, world!\n"; >.P*lT
qU6!vgM&
n1|]ji[c
PHP @ A8y!<
<?php .T8^>z1/\F
print("Hello, world!"); ,B;mG]_
?> )?&mCI*
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bS:$VyH6
Pike GB `n
#!/usr/local/bin/pike } -4p8Zt
int main() *{5}m(5F
{ `m1stK(PO
write("Hello, world!\n"); {=I,+[(
return 0; exSwx-zxI
} TuCHD~rb
X)]>E]X
!V #*(_+n
PL/I ?xKiN5q"6
Test: procedure options(main); /oe0
declare My_String char(20) varying initialize('Hello, world!'); @.cord`
put skip list(My_String); g- #eMQ%J
end Test; QP<P,Bi~
.Sw4{m[g
</<z7V,{
Prolog n @@tO#!\
goal tZ=|1lM
write("hello,world!"). ^{yb4yQ
0
P/~dY[6m
5r8
["
Python gHUW1E
#!/usr/local/bin/python wMF1HT<*
print "Hello, world!" 2\$<&]q
n$j B"1
>Gg[J=7`
REXX aAoAjV NkK
say "Hello, world!" ;/m>c{
WR.7%U';
Zq1> M'V;
Ruby UBM8l
#!/usr/bin/ruby ,9=P=JH
print "Hello, world!\n" RToX[R;1E
,trh)ZZYW|
z}5'TV=^
Scheme 0_y&9Te
(display "Hello, world!") PK?}hz
(newline) D0f7I:i1
S#+ _HFUK{
`,GFiTPd
sed (需要至少一行输入) K24y;968
sed -ne '1s/.*/Hello, world!/p' Q4ii25]*
IP !zg|c,
/Jk.b/t.*S
Smalltalk %iV\nFal>
Transcript show: 'Hello, world!' $\4O r
z5:3.+M5
6x;"T+BSSS
SNOBOL /KvpJ4
OUTPUT = "Hello, world!" TKw>eGe
END H'EBe;ccM
=8r,-3lC;
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SQL <
R@&<E6
create table MESSAGE (TEXT char(15)); 2(D&jL
insert into MESSAGE (TEXT) values ('Hello, world!'); |@-y+vbA*
select TEXT from MESSAGE; kgmb<4p
drop table MESSAGE; jS/$o ?
#@5 jOi
+xmZK<{<
Tcl
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#!/usr/local/bin/tcl /s:akLBaD
puts "Hello, world!" >273V+dy
g]}]/\
1^;&?E
TScript <* PjG}Z.
? "Hello, world!" xi\uLu?i
hi]\M)l&x
A,ao2)
Turing Q([g1?F9*
put "Hello, world!" v#IZSBvuQK
oU 8o;zk0
Ox/va]e7"
UNIX-style shell K&