“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。 rn8#nQ>QZ%
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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》。 cD 5^mxd%
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以下是用不同语言写成的Hello World程序的几个例子: 6xC$R q
Ada j34L*?
with Ada.Text_Io; use Ada.Text_Io; S-Z s
procedure Hello is K}KgCJ3
begin ^1}Y=!&
Put_Line ("Hello, world!"); *z3wm-z1&
end Hello; 4Yx\U
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汇编语言 G&DL)ePu]m
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x86 CPU,DOS,TASM Fx]}<IudA^
MODEL SMALL 7%7 \2!0J}
IDEAL y]YUuJ9a
STACK 100H PKK18E}{%^
%=G*{mK
DATASEG qiyX{J7Z
HW DB 'Hello, world!$' }$wWX}@
==^9_a^
CODESEG $TK<~3`
MOV AX, @data ? 3'O
MOV DS, AX "I
n[= 2w
MOV DX, OFFSET HW ;5.S"
MOV AH, 09H HuRq0/"
INT 21H wVMR&R<t
MOV AX, 4C00H /t$J<bU
INT 21H ch-.+p3
END 49Y_ze6L}
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PSR21;
x86 CPU,GNU/Linux,NASM B{dR/q3;@
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). fEgwQ-]
;Enter this into "hello.asm" then type: c:OFBVZ
;"nasm -f elf hello.asm" 4],*y`& g
;"ld hello.o -o hello" 6 $*\%
;"./hello" 'U|Tye i?
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section .data ;data section declaration R>#BJ^>=
msg db 'Hello World!',0AH '^#=,+ A
len equ $-msg ;string length V!XT=Ou?6
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section .text ;code section declaration ji] H|
global _start ;entry point (start of execution) x<lY&KQ0
_start: mov edx,len ;string length XqxmvN
mov ecx,msg ;string start [>#@?@x`P
mov ebx,1 ;file handle: stdout l+!eC
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mov eax,4 ;sys_write fk)5TPc^
int 80h ;kernel system call wiE'6CM
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mov ebx,0 ;return value tUXly|k
mov eax,1 ;sys_exit Q.zE}ZS
int 80h ;kernel system call NAnccB D!{
%c`P`~sp
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x86 CPU,Windows,MASM32 fZ7Ap3dmP
.386 4eh~/o&h
.model flat,stdcall W5c?f,
option casemap:none y2=`NG=
;Include 文件定义 s(u,mtG
include windows.inc !STa}wl
include user32.inc %jc"s\
includelib user32.lib u}~j NV
include kernel32.inc k&M9Hn2
includelib kernel32.lib |9&bkojo
;数据段 R8(Bt73
.data +"8-)'
szCaption db 'A MessageBox!',0 Dmq_jt
szText db 'Hello,world!',0 "$6 .L^9W
;代码段 WNo",Vc
.code L?:fyNA3[
start: %X^K5Io
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK .r4M]1Of
invoke ExitProcess,NULL 5k]xi)%
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> eX0ASI9
end start vXUq[,8yf
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AWK ?VCM@{9
BEGIN { print "Hello, world!" } E,EpzB$_dj
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BASIC +61h!/<W
传统版BASIC(例如GWBASIC): yG~7Xo5
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10 PRINT "Hello, world!" |w)S
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20 END 2n3g!M6~
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或在提示符输入: "eOFp\vPr
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?"Hello, world!":END bayDdR4T
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现代版BASIC(例如Quick BASIC): 2z+-vT%
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Print "Hello, world!" \[MQJX,dn
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以下的语句在Quick BASIC中同样有效: WJJwhr
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? "Hello,world!" r{1xjAT
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BCPL 2J0N]`|)
GET "LIBHDR" *$/!.e
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LET START () BE V
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$( lAZn0EU
WRITES ("Hello, world!*N") /GUbc
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SGK=WLGM8
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Befunge ]Ac&h
aAP
"!dlrow olleH">v Pi&8!e<
, GDBxciv
^_@ m:4Ec>?e
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Brainfuck
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< uL1$yf'
+++++++++++++++.>.+++.------.--------.>+.>. ![}q9aeT
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C s?-J`k~q
#include <stdio.h> ;VlA~tv
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int main(void) 9X%H$>s
{ SRfnT?u6
printf("Hello, world!\n"); Vub($
return 0; klON6<w
} b8$(j2B~
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o n+:{ad
C++ N{o3w.g
#include <iostream> PY{])z3N
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int main() 8O='Q-&8
{ %g+*.8;"b
std::cout << "Hello, world!" << std::endl; '(o*l
return 0; 1 Ka,u20
} XZ1oV?Z4
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C++/CLI r)Dln5F
int main() B4d\4S_r%
{ NL7CeHs5
System::Console::WriteLine("Hello, world!"); DuV@^qSbG.
} AQR/nWwx
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C# (C Sharp) 6OOdVS3\J
class HelloWorldApp XA4miQn&
{ y?4%eD
public static void Main() 0ghW};[6
{ H1^m>4ll9
System.Console.WriteLine("Hello, world!"); cQOc^W
} nJ{vO{N
} ehe;<A
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COBOL Okt0b|=`1*
IDENTIFICATION DIVISION. }_vUs jK
PROGRAM-ID. HELLO-WORLD. C!%\cy%Xj
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ENVIRONMENT DIVISION. E Qn4+
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DATA DIVISION. 3|qT.QR`Z
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PROCEDURE DIVISION. R3,O;9i
DISPLAY "Hello, world!". 5:W5@e{
STOP RUN. {~u#.(
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Common Lisp E!_mXjlPc
(format t "Hello world!~%") n +R3
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DOS批处理 T|fmO<e*n
@echo off ^}>Ie03m50
echo "Hello, world!" kafRuO~$
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W7 iml|WV0
Eiffel ~8#Ku,vEy
class HELLO_WORLD =}h8Cl{H/
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creation 4x;vn8yh
make 9f/RD?(1O
feature gqCDF H
make is U.mVz,k3
local Eh{]so
io:BASIC_IO ,dZ&i!@?
do Rfuq(DwD6
!!io q[rBu9
io.put_string("%N Hello, world!") `~ ,
end -- make 14LOeo5O
end -- class HELLO_WORLD eq<giHJM
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%%-hax.x0X
Erlang A3jT;D9Y%
-module(hello). D;RZE
-export([hello_world/0]). aOWfu^&H:
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hello_world() -> io:fwrite("Hello, World!\n"). <ic%c/mN
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Forth %8N=4vTJ
." Hello, world!" CR _Vj uQ
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Fortran b7nER]R
WRITE(*,10) &Fxw19[G
10 FORMAT('Hello, World!') E,fG<X{
STOP iR`c/
END e.<y-b?
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HTML XNm%O
<HTML> V< ]l=JOd
<HEAD> M1sR+e$"
<TITLE> Hello World! </TITLE> p~h)@
</HEAD> ={GYJ.*Ah
<BODY> Pn;Tg7oz
<p>Hello World!</p> R,'`
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</BODY> GNIZHyT(O
</HTML> vXA+4 ?ZG
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x<-n}VK\
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INTERCAL @}Y,A~
PLEASE DO ,1 <- #13 <+%#xi/_
DO ,1 SUB #1 <- #238 pjI<
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DO ,1 SUB #2 <- #112 Fo0dz
DO ,1 SUB #3 <- #112 /6$8djw
DO ,1 SUB #4 <- #0 ^/k`URQ
DO ,1 SUB #5 <- #64 v
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DO ,1 SUB #6 <- #238 q_sQC5:s
DO ,1 SUB #7 <- #26 pO~lVM
DO ,1 SUB #8 <- #248 HS% P
DO ,1 SUB #9 <- #168 k8~/lE.Wy
DO ,1 SUB #10 <- #24 [kjm EMF9i
DO ,1 SUB #11 <- #16 SW^/\cJ^
DO ,1 SUB #12 <- #158 .@(+.G
DO ,1 SUB #13 <- #52 @\_l%/z{
PLEASE READ OUT ,1 :mpR}.^hv
PLEASE GIVE UP .^Z^L F
.gPXW=r
XKTX~:
Java mnwYv..ePz
public class Hello LZ"yMnhOf
{ $G_,$U!
public static void main(String[] args) HalkNR-eEm
{ ~S='~ g)
System.out.println("Hello, world!"); ~jqG
} -wqnmK+G
} 2?)bpp$WZ
xq.HR_\
rTR4j>Ua~
JSP e!:/enQo
<% [^U#ic>cT
out.print("Hello, world!"); 3O W)%
%> (zm5
4
Vm
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MIXAL %S2^i3
TERM EQU 19 the MIX console device number /%fa_+,|-
ORIG 1000 start address %Q0J$eC
START OUT MSG(TERM) output data at address MSG _B5t)7I
HLT halt execution ##6_kcL:6G
MSG ALF "MIXAL" 7Z(F-B
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ALF " HELL" ?-"%%#
ALF "O WOR" x@@U&.1_A
ALF "LD " |]<eJ|\=
END START end of the program 41d,<E
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Nuva /Ww_fY
<..直接输出..> |kUxTe
Hello, world! d]v4`nc
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<..或者..> /p=9"?
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// 不带换行 LOD'iiH6
? "Hello, world!" kg>Ymo.
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