“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。 f1JvP\I0Q
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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》。 Blu^\:?#z-
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以下是用不同语言写成的Hello World程序的几个例子: |u03~L9G
Ada &fW;;>
with Ada.Text_Io; use Ada.Text_Io; -QRKDp
procedure Hello is &We'omq
begin R(csJ4F
Put_Line ("Hello, world!"); B-o"Y'iXs
end Hello; b+{,c@1rd
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#!
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汇编语言 iK)w3S}k1y
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x86 CPU,DOS,TASM i^
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MODEL SMALL 8R)*8bb
IDEAL :kgwKuhL
STACK 100H +^`c"qJo
3?2;z+cz*u
DATASEG Uq"RyvkpP
HW DB 'Hello, world!$' <n0-zCf
I 5
CODESEG ?onZ:s2
MOV AX, @data T1D7H~\lG
MOV DS, AX N!hp^V<7
MOV DX, OFFSET HW zVp|%&
MOV AH, 09H X^"95Ic
INT 21H eGZIdv1
MOV AX, 4C00H n}a# b%e
INT 21H (xq25;|Y
END YckexfL
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8^+Qn/b_%
x86 CPU,GNU/Linux,NASM t:W`=^
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). c D7q;|+
;Enter this into "hello.asm" then type: $lUZm\R|k
;"nasm -f elf hello.asm" lxV>
rmD
;"ld hello.o -o hello" IA''-+9
;"./hello" $vicxE~-E
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section .data ;data section declaration eml(F
msg db 'Hello World!',0AH yh} V u
len equ $-msg ;string length aMT&}3
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section .text ;code section declaration 7
pp[kv;!G
global _start ;entry point (start of execution) b5KX` r
_start: mov edx,len ;string length *pj&^W?
mov ecx,msg ;string start @eR>?.:&
mov ebx,1 ;file handle: stdout GN(PH/fO9
mov eax,4 ;sys_write )R,*>-OPJL
int 80h ;kernel system call s}UPe)Vu
2g|+*.*`
mov ebx,0 ;return value Gu9Ap<>!
mov eax,1 ;sys_exit ZCV&v47\p_
int 80h ;kernel system call c[ga@Vy
~u7a50
l=xy_ TCf
x86 CPU,Windows,MASM32 .DIHd/wA
.386 H2[S]`?
.model flat,stdcall =p ^Sn,t
option casemap:none =f?| f
;Include 文件定义 Zn&X
Uvdl
include windows.inc ,253'53W)
include user32.inc ?;!l-Dy
includelib user32.lib -k")#1
include kernel32.inc cl)%qIXj}H
includelib kernel32.lib , En
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;数据段 {- tCLkE
3
.data /zM
szCaption db 'A MessageBox!',0 nTp?
szText db 'Hello,world!',0 `G6Nk@9.
;代码段 x_AG=5OJX,
.code {
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start: >4b-NS/}0
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK V(w2k^7)F
invoke ExitProcess,NULL xLX:>64'o>
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |-=^5q5
end start `+{|k)2B
L-",.U*;
D'c,z[
AWK szGp<xv_p
BEGIN { print "Hello, world!" } e\tcP
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BASIC t@.M;b8
传统版BASIC(例如GWBASIC): NDm3kMa
G"3D"7fa
10 PRINT "Hello, world!" U_B"B;ng+
20 END S3A OT
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或在提示符输入: {H=DeQ
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?"Hello, world!":END X70G@-w
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现代版BASIC(例如Quick BASIC): 2y`rS
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Print "Hello, world!" BMgiXdv.B
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以下的语句在Quick BASIC中同样有效: t9;yyZh
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? "Hello,world!" #EgFB}>1
wspZ Eu>C;
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BCPL Kp!sn,:
GET "LIBHDR" UPfH~H[1)
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LET START () BE @Q
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$( ^~E?7{BL
WRITES ("Hello, world!*N") !/[/w39D0o
$) Mnn\y Tblp
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h}nceH0s3d
Befunge mhv{6v
"!dlrow olleH">v CuR.a
, Wz`MEyj
^_@ Hw-,sze j"
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3){ /u$iH.
Brainfuck b%z4u0
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< )#%k/4(Y
+++++++++++++++.>.+++.------.--------.>+.>. /{gCf
{=pRU_-^
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C o4^rE<vJ
#include <stdio.h> %3M1zZY
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int main(void) ""|vhgP
{ 8vjaQ5
printf("Hello, world!\n"); Y_ b;1RN
return 0; c*sK| U7)
} ]2`PS<a2
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C++ ~G+o;N,V
#include <iostream> vN=e1\
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int main() cy%JJ)sf
{ _ +q.R
std::cout << "Hello, world!" << std::endl; kC"lO'
return 0; z%Pbs[*C
} (,z0V+!
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G}<%%U D
C++/CLI 3GqvL_
int main() } Wx#"6
{ !#wd~: H
System::Console::WriteLine("Hello, world!"); x%Ivd
} BU
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~<!b}Hv
5Arx"=c
C# (C Sharp) \3a(8Em
class HelloWorldApp 0.7*2s-
{ *.nC'$-2r
public static void Main() c((^l&
{ nG
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System.Console.WriteLine("Hello, world!"); " lar~
} _1TSt%L
} sq1Z;l31"
k<x
%
fbgq+f`\
COBOL c
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IDENTIFICATION DIVISION. [}-CXB
PROGRAM-ID. HELLO-WORLD. oNH&VHjU
!#s1'x{o
ENVIRONMENT DIVISION. BiI?eT+
RKB--$ibj
DATA DIVISION. K89 AZxH
MDI[TNYG
PROCEDURE DIVISION. CvDy;'{y1
DISPLAY "Hello, world!". `3GC}u>}
STOP RUN. aMI\gCB/
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.b'hVOs{
Common Lisp #Q320}]{
(format t "Hello world!~%") DWT4D)C,U
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2O}UVp>
DOS批处理 $C@v
@echo off 1xAZ0X#
echo "Hello, world!" *tkbC2D
}H2<w-,+
5[NF
Eiffel nW?DlECo?
class HELLO_WORLD T
<J%|d .'
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creation =73""ry
make $7
1(g$6#
feature ^D`ARH
make is DY]\@<ez
local ;`ZGiax
io:BASIC_IO Id-?her>B
do V0y Q
!!io TXx%\V_6
io.put_string("%N Hello, world!") B]jI^(P
end -- make >:7W.QLRU
end -- class HELLO_WORLD
--Dd'
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Erlang U-+%e:v
-module(hello). uEp
v l
-export([hello_world/0]). n$>E'oG2t
v"x{oD$R
hello_world() -> io:fwrite("Hello, World!\n"). zSs5F_
#IH7WaN
B1\@ n$
Forth @#sBom+K`
." Hello, world!" CR |4RuT
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Fortran Mx&
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WRITE(*,10) GS1Vcav<
10 FORMAT('Hello, World!') Q5R7se_
STOP L_$M9G|5n
END aBL+i-
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4E&=qC]S
HTML 9D
2B8t"a
<HTML> yj]\%3o<Z7
<HEAD> 6@ `'}
<TITLE> Hello World! </TITLE> M+Rxt.~6
</HEAD> WHh=hts\
<BODY> +;nADl+Q
<p>Hello World!</p> bvM\Qzc!<3
</BODY> |UbwPL_L
</HTML> xxnMvL;
9r@T"$V#c
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H ba_T:;';0
Iz;hje4JL
P<@Yux#
INTERCAL WgBV,{C
PLEASE DO ,1 <- #13 **jD&h7$s-
DO ,1 SUB #1 <- #238 K%TlB KV
DO ,1 SUB #2 <- #112 Yjo$^q
DO ,1 SUB #3 <- #112 MguH)r`uT
DO ,1 SUB #4 <- #0 4BSSJ@z
DO ,1 SUB #5 <- #64 wr\d5j
DO ,1 SUB #6 <- #238 gB\
a
DO ,1 SUB #7 <- #26 |BysSJ
DO ,1 SUB #8 <- #248 =1D* JU
DO ,1 SUB #9 <- #168 X2#;1 ku
DO ,1 SUB #10 <- #24 /mST<{(_G\
DO ,1 SUB #11 <- #16 :hB
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DO ,1 SUB #12 <- #158 -u6`B-T
DO ,1 SUB #13 <- #52 23a&m04Rk
PLEASE READ OUT ,1 lqC
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PLEASE GIVE UP c"mRMDg%
z`b.~<P
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Java Vab+58s5
public class Hello 4v#3UG
{ EFl[u+
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public static void main(String[] args) /?b<}am
{ L|DSEth
System.out.println("Hello, world!"); V0p@wG3
} Q^qG=
} x)@G+I\u
mUi|vq)`=D
sePOW#|
JSP 0-dhGh?.
<% m
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out.print("Hello, world!"); z_XI,u}
%> !/0XoIf"
.^s%Nh2jM
m9^?p
MIXAL
5" U8|
TERM EQU 19 the MIX console device number ^0 t81,`
ORIG 1000 start address 7QiJ1P.z
START OUT MSG(TERM) output data at address MSG % ~%>3
HLT halt execution H9)$ #r6i
MSG ALF "MIXAL" K%h83tm+
ALF " HELL" Q"]C"?
ALF "O WOR" )F;[
ALF "LD " GiBq1U-Q
END START end of the program =dbLA ,z9
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Nuva ;FYiXK%
<..直接输出..> luZqW`?Bt
Hello, world! Yyl2J#$!
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<..或者..> %^RlE@l9
r ]1|I6:&)
<. ;(3fr0cr:
// 不带换行 >gDsjHQ6;
? "Hello, world!" _nRY5YnL4P
/Ny/%[cu
// 或者 >u5}5OP7
dL"$YU9z
// 带换行 {] -nYHGL
?? 'Hello, world!' vO" $Xw
.> {m}B=u
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7I4G:-V:^
OCaml hIa@JEIt
let main () = ,2?"W8,
print_endline "Hello world!";; rS9*_-NH
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n15c1=gs
Pascal v
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program Hello; DC`6g#*<
begin }vO^%Gd
writeln('Hello, world!'); }/G~"&N[
end. 5}e-~-
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"z^Ysvw&~
Perl NW=j>7
#!/usr/local/bin/perl e*vSGT$KgL
print "Hello, world!\n"; {Z;W|w1t
:i*JlKHJd
cd}TDd(H%
PHP ]\P
<?php ?"AcK"v
print("Hello, world!"); RCNqHYR
?> V&KH{j/P
xPqpNs-,
Z<y+D-/
Pike ?MeP<5\A
#!/usr/local/bin/pike K1z"..(2J
int main() f7OfN#I
{ Fw:s3ON9}
write("Hello, world!\n"); Y_PCL9G{p
return 0; 9>le-}~
} 'ESy>wA{y<
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PL/I J#@" Yb
Test: procedure options(main); "DWw1{ 5/
declare My_String char(20) varying initialize('Hello, world!'); oB3>0Pm*a.
put skip list(My_String); 2ok>z$Y
end Test; ..;LU:F
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l%B1JGu*F
Prolog %8
cFzyE*
goal _a*Wk
write("hello,world!"). hUGIy(
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sut j
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Python snj4MA@I]
#!/usr/local/bin/python zGZe|-
print "Hello, world!" S%&l(=0X
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9>@_};l
REXX scL7PxJ5
say "Hello, world!" 3{CGYd]_u
TaM,9MAu
]RnX'yw^
Ruby */\dH<
#!/usr/bin/ruby RWA|%/L
print "Hello, world!\n" {LJCY<IGq
oF
V9t{~j
/q='~t
Scheme 6mdJ
=b#
(display "Hello, world!") Mw'd<{
(newline) :g<dwuVO
:Np&G4IM>
Ev0V\tl>0
sed (需要至少一行输入) =NJb9S&8A
sed -ne '1s/.*/Hello, world!/p' 3CQpe
@292;qi
Y/Y746I
Smalltalk lt0(Kf g
Transcript show: 'Hello, world!' b'9G`Y s^
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D zDt:.JZ
SNOBOL y
L&n)
OUTPUT = "Hello, world!" ew?UHV
END k~=-o>}C
ci3{k"
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SQL 9zO;sg;3
create table MESSAGE (TEXT char(15)); kV6>O C&^
insert into MESSAGE (TEXT) values ('Hello, world!'); {AIZ,
select TEXT from MESSAGE; ~sSB.g
drop table MESSAGE; <\zb*e&vr
, is
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VdK-2O(.-
Tcl DU1,i&(
#!/usr/local/bin/tcl !JYDg
puts "Hello, world!" [U3z*m>e;
qd{|"(9B
JI\u -+BE
TScript vgE5(fJh
? "Hello, world!" PI0/=kS
fvNGGn!
m@HU;J\I
Turing XTW/3pB
put "Hello, world!" y'pG'"U]_
U?|s/U
(Z `Y
UNIX-style shell ;oR-\;]/.
程序中的/bin/sh可改为您使用的shell 5&