“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。 (uidNq
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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》。 S`]k>'
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以下是用不同语言写成的Hello World程序的几个例子: ,v}k{( 16{
Ada [1H^3g
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with Ada.Text_Io; use Ada.Text_Io; -|9=P\U8S
procedure Hello is \lNN Msd&
begin M"To&?OI
Put_Line ("Hello, world!"); -35;j'a
end Hello; SZCze"`[
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汇编语言 eJ81-!)
f`66h M[
x86 CPU,DOS,TASM 9(<@O%YU
MODEL SMALL Yu`~U,m
IDEAL mXs; b
2r^
STACK 100H Mrb)
W=4FFl[
DATASEG m~ee/&T
HW DB 'Hello, world!$' a"u0Q5J
3HK\BS
CODESEG ,9
a
MOV AX, @data YKf0dh;O
MOV DS, AX *DhiN
MOV DX, OFFSET HW I1&aM}y{G
MOV AH, 09H MnW+25=N
INT 21H k$}fWR
MOV AX, 4C00H #A8sLkY
INT 21H *}W_+qo"
END 8*a&Jl
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x86 CPU,GNU/Linux,NASM L9#g)tf
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;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). eb$#A _m
;Enter this into "hello.asm" then type: ~WV"SaA)*U
;"nasm -f elf hello.asm" &PtJ$0%q
;"ld hello.o -o hello" JOBhx)E
;"./hello" [z9Z5sLO
'@P^0+B!(.
section .data ;data section declaration KJZ4AWH`
msg db 'Hello World!',0AH +m,yA mEEd
len equ $-msg ;string length 2^yU ~`#
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section .text ;code section declaration ,~W|]/b<q
global _start ;entry point (start of execution) FJ?IUy 6
_start: mov edx,len ;string length Q#zmf24W
mov ecx,msg ;string start _v]MsT-q
mov ebx,1 ;file handle: stdout \xoP)Ub>
mov eax,4 ;sys_write u\nh[1)a)
int 80h ;kernel system call ^pk7"l4Xm
<p"iY}x[H
mov ebx,0 ;return value }*"p?L^p{
mov eax,1 ;sys_exit "g8M0[7e3
int 80h ;kernel system call X!g#T9kG
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7. ;3e@s
x86 CPU,Windows,MASM32 y"wShAR
.386 -z(+/ /K:#
.model flat,stdcall )w%!{hn
option casemap:none R*r#E{!V;
;Include 文件定义 S|+o-[e8O
include windows.inc 4H]L~^CD
include user32.inc |P}y,pNQ
includelib user32.lib .#pU=v#/[
include kernel32.inc UW
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includelib kernel32.lib JqiP>4Uwm^
;数据段 Owk |@6!
.data =odFmF
szCaption db 'A MessageBox!',0 )53y
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szText db 'Hello,world!',0 du^J2m{f
;代码段 *CHX
.code *4Y Vv
start: x-3\Ls[I
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !%0 *z
invoke ExitProcess,NULL o{[YA}xc
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> P7~ >mm+
end start :9 ^*
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AWK `PH{syz
BEGIN { print "Hello, world!" } VW4r{&rS
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BASIC \)|hogI|f
传统版BASIC(例如GWBASIC): !C:$?oU
|$b}L7_
10 PRINT "Hello, world!" ekCC5P!
20 END J7p),[>I<
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或在提示符输入: J/*`7Pd
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?"Hello, world!":END 92KRb;c
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现代版BASIC(例如Quick BASIC): |
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Print "Hello, world!" LFtt gY
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以下的语句在Quick BASIC中同样有效: <UQbt N-B\
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? "Hello,world!" 3$9W%3
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BCPL <e</m)j
GET "LIBHDR" B`J~^+`[*
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LET START () BE CizX<Cr}
$( 3/n5#&c\4
WRITES ("Hello, world!*N") k\GcHI-
$) RrQJ/ts7}
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Befunge A~t
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, Y/zj[>
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AP
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Brainfuck 6V01F8&w
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< YcpoL@ab
+++++++++++++++.>.+++.------.--------.>+.>. rh}J3S5vp
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C g7W"
#include <stdio.h> |8tilOqI
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int main(void) FQ5U$x.[P
{ wDe& 1(T^
printf("Hello, world!\n"); z ~/` 1
return 0; f=K]XTw~
} :&9s,l
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C++ v,>Dbxn
#include <iostream> wD'SPk5S?
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int main() DN5 7p!z
{ A{D];pE`
std::cout << "Hello, world!" << std::endl; Fy-t T]Q9
return 0; HRfYl,S,
} wEvVL
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C++/CLI ,wAF:7'
int main() + @s"zp;F
{ O[JL+g4
System::Console::WriteLine("Hello, world!"); 6G""I]uT
} 7! INkH]
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C# (C Sharp) -z%^)VE
class HelloWorldApp ExL0?FemWV
{ L>4"(
public static void Main() i6Emhji
{ LuvY<~u
System.Console.WriteLine("Hello, world!"); (V67`Z )
} .jjG(L
} H]Z$OpI
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COBOL mSl.mi(JiZ
IDENTIFICATION DIVISION. K^<BW(s
PROGRAM-ID. HELLO-WORLD. +}os&[S
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ENVIRONMENT DIVISION. 0[?Xxk}s0
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DATA DIVISION. aQ\$A`?
57
PROCEDURE DIVISION. K:#I
DISPLAY "Hello, world!". a'yK~;+_9
STOP RUN. \\B(r
XYOC_.f1
VY=jc~c]v
Common Lisp h^(*Tv-!
(format t "Hello world!~%") +E(L \
#( 146
>$/>#e~
DOS批处理 mLLDE;7|}
@echo off y(yHt=r
echo "Hello, world!" `Cynj+PCe
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9w"4K.
Eiffel 1JG'%8}#8
class HELLO_WORLD L2i_X@/
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creation e)?
.r9pA;
make =|y9UlsD
feature ,Ae6/D$h/
make is ytJ/g/,A0i
local xHLlMn4M
io:BASIC_IO r1{@Ucw2
do ">,|V-H
!!io LG|fq/;
io.put_string("%N Hello, world!") +.b,AqJ/
end -- make .2Elr(&*h
end -- class HELLO_WORLD yEoF4bt
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Erlang 9ZsVy
-module(hello). w4{<n/"
-export([hello_world/0]). U,{eHe ?>T
:vQrOn18p
hello_world() -> io:fwrite("Hello, World!\n"). :zke %Yx
\aUC(K~o\;
0{p#j~ZhC
Forth `*N[jm"
." Hello, world!" CR A>;bHf@
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Fortran .glA
gt
WRITE(*,10) ;)z:fToh
10 FORMAT('Hello, World!') bSi%2Onj
STOP VSI9U3t3w
END BLf>_bUk
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;~ $'2f~U
HTML tOd&!HYL
<HTML> -4IE]'##
<HEAD> +RM SA^
<TITLE> Hello World! </TITLE> +YKi,
</HEAD> n&qg;TT
<BODY> ;LPfXpR
<p>Hello World!</p> G3vxjD<DMW
</BODY> &P}_bx
</HTML> UapC"XYJ
G+"t/?/
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c&?m>2^6
/}fHt^2H
INTERCAL {{D)YldtA
PLEASE DO ,1 <- #13 G kl71VX
DO ,1 SUB #1 <- #238 %i9E @EV
DO ,1 SUB #2 <- #112 GxI!{oi2
DO ,1 SUB #3 <- #112 U}e!Wjrc
DO ,1 SUB #4 <- #0 `O!X((
DO ,1 SUB #5 <- #64 /hH
DO ,1 SUB #6 <- #238 lH x^D;m6
DO ,1 SUB #7 <- #26 Kp~VS<3
DO ,1 SUB #8 <- #248 SpLzm A
DO ,1 SUB #9 <- #168 rv^@, 8vq
DO ,1 SUB #10 <- #24 n&;85IF1
DO ,1 SUB #11 <- #16 TA`1U;c{n
DO ,1 SUB #12 <- #158 =_ ./~
DO ,1 SUB #13 <- #52 (ybI\UI
PLEASE READ OUT ,1 WwBOM~/`2
PLEASE GIVE UP ;!mzyb*
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qYjce]c
Java L~rBAIdD
public class Hello vrhT<+q
{ JPc+rfF
public static void main(String[] args) 8:c-k|CX
{ ]}-7_n#cC
System.out.println("Hello, world!"); rq/yD,I,
} r6MMCJ|G
} ;4^Rx
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0w\zLU
JSP %S@ZXf~:
<% Jr
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out.print("Hello, world!"); `iAF3:
%> 0d"[l@UU0
Ic"ybj`
Pw7]r<Q
MIXAL u<6<iD3y
TERM EQU 19 the MIX console device number J!v3i*j\
ORIG 1000 start address iwZPpl";
START OUT MSG(TERM) output data at address MSG x=hiQ>BIO0
HLT halt execution Qcq`libK
MSG ALF "MIXAL"
nJG U-Z
ALF " HELL" b8`)y<