“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。 tgY/8&$M
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 }8'b}7!
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以下是用不同语言写成的Hello World程序的几个例子: %e(DPX
Ada YT6dI"48
with Ada.Text_Io; use Ada.Text_Io; ZqXp f
procedure Hello is u}89v1._Jn
begin b-Ru UfUn0
Put_Line ("Hello, world!"); \-8aTF
end Hello; O=oIkvg
. f!dH
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汇编语言 51xf.iB
|)S*RQb\
x86 CPU,DOS,TASM >4J(\'}m|
MODEL SMALL xtut S
IDEAL a\}`
f=T
STACK 100H *Tr9pq%m
B+MnT{
DATASEG KxDp+]N]
HW DB 'Hello, world!$' AWd,qldv
nO#x"
CODESEG nPk&/H%5hn
MOV AX, @data +'wO:E1( w
MOV DS, AX `><E J'h
MOV DX, OFFSET HW &0]5zQ
MOV AH, 09H vRH2[{KQ9
INT 21H qB3E
MOV AX, 4C00H }i J$&CJ
INT 21H tVh"C%Vkr
END ] !n3j=*
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x86 CPU,GNU/Linux,NASM A9MTAm{
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). :*s@L2D6
;Enter this into "hello.asm" then type: D 9UM8Hxi
;"nasm -f elf hello.asm" k 7:Z\RGy
;"ld hello.o -o hello" U+zntB
;"./hello" V[n,fEPBr
J$lfI^^
section .data ;data section declaration %M:$ML6b<
msg db 'Hello World!',0AH fk!9` p'
len equ $-msg ;string length sG\K$GP!
sKk+^.K}|
section .text ;code section declaration *K BaKS
global _start ;entry point (start of execution) <v=s:^;C0
_start: mov edx,len ;string length p(nEcu
mov ecx,msg ;string start y+KAL{AGK
mov ebx,1 ;file handle: stdout uW2 q\
mov eax,4 ;sys_write fXh{_>
int 80h ;kernel system call h/6^>setz
+
)[@
mov ebx,0 ;return value s+(@UUl
mov eax,1 ;sys_exit vM50H
int 80h ;kernel system call 3R-5&!i
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x86 CPU,Windows,MASM32 ).AMfBQ=;
.386 "Q{l])N
.model flat,stdcall 2$v8{Y&
option casemap:none
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;Include 文件定义 0T^0)c
include windows.inc )?pnV":2Y
include user32.inc UmY{2 nzY
includelib user32.lib Ks<+@.DLTu
include kernel32.inc k SgE_W)
includelib kernel32.lib lQEsa45
;数据段 #jd.i
.data `?b'.Z_J
szCaption db 'A MessageBox!',0 wJ7^)tTRF
szText db 'Hello,world!',0 ~@(C+ 3,
;代码段 @C^wV
.code
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start: $x,EPRNs
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK =3`|D0E
invoke ExitProcess,NULL ]k'^yc{5
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> gA%
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end start \BN$WV
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AWK :(wFNK/0{
BEGIN { print "Hello, world!" } a=`]
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BASIC \j5`6}zm
传统版BASIC(例如GWBASIC): -m@PqJF^
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10 PRINT "Hello, world!" [YZgQ
20 END @$'pMg
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或在提示符输入: 3+(lKd
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?"Hello, world!":END -*i_8`
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现代版BASIC(例如Quick BASIC): 2dcvB]T!
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Print "Hello, world!" ?5/7
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以下的语句在Quick BASIC中同样有效: EW1,&H
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? "Hello,world!" Q J-|zS.W
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BCPL <i]0EE}%
GET "LIBHDR" s]|tKQGl,
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LET START () BE t
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$( ZO/u3&gU
WRITES ("Hello, world!*N") e([>sAx!1
$) ([}08OW@
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Befunge "qd|!:bE
"!dlrow olleH">v gPb.%^p
, >3@3~F%xAX
^_@ EwkSUA>Tm
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Brainfuck :8hI3]9
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Rb. vyQ
+++++++++++++++.>.+++.------.--------.>+.>. 6>oc,=MV/
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C cjJfxD&q
#include <stdio.h> +ima$a0Zyt
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int main(void) B+mxM/U[c
{ @c'iT20
printf("Hello, world!\n"); q7f`:P9~
return 0; 0c`nk\vUy
} c)B3g.C4m
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C++
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#include <iostream> y_}vVHT,
1[8^JVC>6
int main() i?;#ZNh
{ s)`(@"{
std::cout << "Hello, world!" << std::endl; bxtH`^
return 0; u}|v;:|j
} #v<`|_
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C++/CLI ",D!8>=s
int main() DXI4DM"15I
{ 8FMxn{k2
System::Console::WriteLine("Hello, world!"); EJ#I7_
} jH!;}q
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C# (C Sharp) ,?er AI
class HelloWorldApp -grmmE]/
{ Qn.dL@W
public static void Main() &1yJrj9y
{ 0NGth(2
System.Console.WriteLine("Hello, world!"); z k/`Uz
} 6PYt>r&TO
} W"\}##
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COBOL =eUKpYI
IDENTIFICATION DIVISION. GdI,&|/
PROGRAM-ID. HELLO-WORLD. ye9GBAj
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ENVIRONMENT DIVISION. gBv!E9~l
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DATA DIVISION. [`b,SX
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PROCEDURE DIVISION. N6"sXwm
DISPLAY "Hello, world!". zGR,}v%%
STOP RUN. -dA9x~o
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Common Lisp W&)f#/M8
(format t "Hello world!~%") DxNob-Fr
2Ax"X12{6
w01[oU$x=
DOS批处理 z+7V}aPM
@echo off bE.<vF&
echo "Hello, world!" VsL,t\67
5=I({=/>
e'A_4;~@s
Eiffel BInSS*L
class HELLO_WORLD Lv['/!DJ|
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creation 1C{0 R.
make C/Tk`C&
feature N=C t3
make is `e<IO_cg
local 9dNkKMc@
io:BASIC_IO SNOc1c<~
do rIPfO'T?
!!io <q$Tk,
io.put_string("%N Hello, world!") A{T9-f@X
end -- make E> GmFw
end -- class HELLO_WORLD <b,WxR`
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Erlang v77UE"4|c
-module(hello). 2=fM\G
-export([hello_world/0]). QOktIH
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hello_world() -> io:fwrite("Hello, World!\n"). v)_c*+6u
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Forth 5@%Gq)z5
." Hello, world!" CR \ YF@r7
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Fortran X}(X\rp
WRITE(*,10) 5X)QW5A
10 FORMAT('Hello, World!') ~Ze!F"
STOP IF6$@Q
END 8|)!E`TKSV
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d.~ns4bt9
HTML G{fPQ=
<HTML> ]vz6DJs
<HEAD> 8%m\J:eR
<TITLE> Hello World! </TITLE> H"? 5]!p
</HEAD> #;a+)~3*O
<BODY> hzr,
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<p>Hello World!</p> wi7Br&bGi
</BODY> #~-Xt!I
</HTML> f|B\Y/*X
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sx=1pnP9`
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H y4jiOhF<d
0vfMJzk
j[gqS%
INTERCAL 9`/e=RL
PLEASE DO ,1 <- #13
gPB=Z!
DO ,1 SUB #1 <- #238 ,= ApnNUgX
DO ,1 SUB #2 <- #112 *Ci&1Mu^Z
DO ,1 SUB #3 <- #112 q;nAq%
DO ,1 SUB #4 <- #0 13/,^?
DO ,1 SUB #5 <- #64 ffL]_E
DO ,1 SUB #6 <- #238 )yb~ kbe
DO ,1 SUB #7 <- #26 59D'*!l-
DO ,1 SUB #8 <- #248 !Z2h?..O
DO ,1 SUB #9 <- #168 rBmW%Gv
DO ,1 SUB #10 <- #24 J&~I4ko]
DO ,1 SUB #11 <- #16 4'#=_J
DO ,1 SUB #12 <- #158 6O{QmB0KK
DO ,1 SUB #13 <- #52 9D\E0YG X/
PLEASE READ OUT ,1 98 R/^\
PLEASE GIVE UP D? %*L
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mv:@ D
Java jRC{8^98
public class Hello \Qah*1
{ jm<^WQ%Cc
public static void main(String[] args) 0qFO+nC
{ )
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System.out.println("Hello, world!"); jW8ad{
} RP~67L
} N*Q*>q
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[rcM32
JSP :!Q(v(M
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out.print("Hello, world!"); 4K:Aqqhds
%> Cj~e` VRhk
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e"^WXP.t&
MIXAL h!(#
/
TERM EQU 19 the MIX console device number 6)YckxN^
ORIG 1000 start address !1R?3rVQS
START OUT MSG(TERM) output data at address MSG ?SYmsaSr5
HLT halt execution 2
oL$I(83
MSG ALF "MIXAL" d1g7:s9$0
ALF " HELL" H?r~% bh
ALF "O WOR" sYXLVJ>b
ALF "LD " ?E!M%c@,
END START end of the program 7CR#\&h`
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Nuva $ bMmyDw
<..直接输出..> dRzeHuF92
Hello, world! SbUac<
sqhIKw@
<..或者..> 63\
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j-J/yhWO&
<. [g"nu0sOK
// 不带换行
z [[qrR
? "Hello, world!" )
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#s\yO~F-
// 或者 `dX0F=Ag?
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// 带换行 Z"Lr5'}
?? 'Hello, world!' 4s|qxCks
.> \anOOn@
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