“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。 S4Ww5G?.
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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》。 IrhA+)pdse
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以下是用不同语言写成的Hello World程序的几个例子: fNt`?pWH
Ada C3],n
with Ada.Text_Io; use Ada.Text_Io; ~SF<,-Kg
procedure Hello is I3mGo
begin lXiKY@R#
Put_Line ("Hello, world!"); P5nO78
end Hello; ime\f*Fg
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汇编语言 W!&'pg
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x86 CPU,DOS,TASM Yc
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MODEL SMALL jWl)cC
IDEAL sy"^?th}b
STACK 100H u\{ g(li-I
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DATASEG 2h1C9n%j9
HW DB 'Hello, world!$' 87P>IO
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CODESEG ()+<)hg}2
MOV AX, @data ^,8)iV0j_
MOV DS, AX J)~L
MOV DX, OFFSET HW QQ ~-
MOV AH, 09H @&:ar
INT 21H X{'q24\F
MOV AX, 4C00H pd7NF-KD
INT 21H -
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END An"</;HU
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x86 CPU,GNU/Linux,NASM
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;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). YWe"zz
;Enter this into "hello.asm" then type: GlT7b/JCG
;"nasm -f elf hello.asm" Uo>]sNP~
;"ld hello.o -o hello" 2hkRd>)&5
;"./hello" 5>j)kx=J9
i9A+gtd
section .data ;data section declaration [[Fx[
msg db 'Hello World!',0AH pDcjwlA%
len equ $-msg ;string length tj4VWJK
dhr3,&+T2
section .text ;code section declaration CS-uNG6
global _start ;entry point (start of execution) ayD}r#7
_start: mov edx,len ;string length }mdAM6
mov ecx,msg ;string start ,Bo>E: u
mov ebx,1 ;file handle: stdout H77"
mov eax,4 ;sys_write 0_"fJ~Y^J
int 80h ;kernel system call *c*0PdV
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mov ebx,0 ;return value (+3Wgl+]/
mov eax,1 ;sys_exit xAe~]k_D
int 80h ;kernel system call SNE#0L'}
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x86 CPU,Windows,MASM32 #K Xa&C
.386 ;b(p=\i
.model flat,stdcall ,%Up0Rr,
option casemap:none &PK\|\\2
;Include 文件定义 Q|L9gz[?
include windows.inc rJ{O(n]j
include user32.inc ,JN8f]a^"g
includelib user32.lib yi%-7[*]=
include kernel32.inc R Yl>
includelib kernel32.lib cwWodPNm
;数据段 2e9es
.data fKeT~z{~
szCaption db 'A MessageBox!',0 q**G(}K
szText db 'Hello,world!',0 D]~MC
;代码段 _DNHc*
.code j;3[KLmuK%
start: o1Q7Th
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK fasgmi}
invoke ExitProcess,NULL Qx47l
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 6 9NQ]{1
end start yz*6W
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AWK C[Dav&=^F
BEGIN { print "Hello, world!" } aj,T)oDbt6
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BASIC %\r!7@Q
传统版BASIC(例如GWBASIC): .h5[Q/*h
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10 PRINT "Hello, world!" H0SQ"?
20 END ? Cg>h
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或在提示符输入: ]Ww?QhJ
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?"Hello, world!":END IGFR4+
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现代版BASIC(例如Quick BASIC): ?Wt$6{)
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Print "Hello, world!" /'DsB%7g
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以下的语句在Quick BASIC中同样有效: -!L"')
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? "Hello,world!" QZhjb
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BCPL f'{]"^e=
GET "LIBHDR" A7`1-#
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LET START () BE L%c0 Z@[~
$( b2=0}~LK
WRITES ("Hello, world!*N") 'fNKlPMv4D
$) <rL/B
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S&Ee,((E(
Befunge h=_0+\%
"!dlrow olleH">v v\"S
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Brainfuck J@ktyd(P
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 8Bq!4uq\5|
+++++++++++++++.>.+++.------.--------.>+.>. S#Sb ]
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#include <stdio.h> LtKI3ou
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int main(void) t/PlcV_M"
{ fiN3xP]V
printf("Hello, world!\n"); p/
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return 0; $<|lE/_]
} ?cEskafb>
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C++ %9#gB
#include <iostream> 1#4PG'H
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int main() !'*csg
{ ~|AwN [
std::cout << "Hello, world!" << std::endl; r]Ff{la5
return 0; FG!X"<he
} fQ=MJ7l
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C++/CLI b4""|P?L
int main() q;wLa#4)J
{ VCcr3Dx()F
System::Console::WriteLine("Hello, world!"); *I0-O*Xr
} tDCw-
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C# (C Sharp) $eBX
class HelloWorldApp C}*cx$.
{ ^Mk%z9
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public static void Main() %D`,k*X
{ \rV
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System.Console.WriteLine("Hello, world!"); LR,7,DH$9'
} ')$NfarQ.
} kzS=g|_
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COBOL Lh-`OmO0>F
IDENTIFICATION DIVISION. Zf>^4_x3P
PROGRAM-ID. HELLO-WORLD. (?b@b[D~4
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ENVIRONMENT DIVISION. 9r2IuS0
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DATA DIVISION. *+b6B_u]
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PROCEDURE DIVISION. 'snYu!`z
DISPLAY "Hello, world!". iYbX
STOP RUN. oiX"Lz{
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Common Lisp ='E$-_
(format t "Hello world!~%") oQj=;[
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DOS批处理 D8#
on!
@echo off V=:_ d,
echo "Hello, world!" pNE(n4v
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Eiffel PZD>U)M
class HELLO_WORLD rB%$;<`/
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creation ksjUr 1o
make jAsO8
feature t%r :4,
make is il:nXpM!
local @oG)LT
io:BASIC_IO vG2b:[W
do !z
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!!io qYp$fmj
io.put_string("%N Hello, world!") efuK
end -- make kDz>r#%
end -- class HELLO_WORLD wn11\j&
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Erlang hD<f3_k
-module(hello). XL}<1-}
-export([hello_world/0]). )J3kxmlzQ
".~{:=
hello_world() -> io:fwrite("Hello, World!\n"). qsg>5E
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Forth y$tX-9U
." Hello, world!" CR ;S/7 h6
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Fortran 1{2eY%+C
WRITE(*,10) !|m9|
10 FORMAT('Hello, World!') P l{QOR
STOP 9''p[V.3
END IdM*5Y>f
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HTML ,dd WBwMK
<HTML> aN^IP
<HEAD> hGP1(pH.
<TITLE> Hello World! </TITLE> s([Wn)I
</HEAD> <2P7utdZ
<BODY> chAan~r[*
<p>Hello World!</p> (=T$_-Dj`}
</BODY> i!MwBYk
</HTML> <5Mrp"C[i
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INTERCAL &(&
PLEASE DO ,1 <- #13 '0+$ m=
DO ,1 SUB #1 <- #238 XSB8z
DO ,1 SUB #2 <- #112 ?(im+2
DO ,1 SUB #3 <- #112 amB@N6*
DO ,1 SUB #4 <- #0 KC&`x|
DO ,1 SUB #5 <- #64 >v0 :qN7|
DO ,1 SUB #6 <- #238 {&nV4c$v
DO ,1 SUB #7 <- #26 \/Ij7nD`l%
DO ,1 SUB #8 <- #248 mPmB6q%)]
DO ,1 SUB #9 <- #168 \].J-^=
DO ,1 SUB #10 <- #24 WSI
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DO ,1 SUB #11 <- #16 $+:(f{Va*
DO ,1 SUB #12 <- #158 `X+j2TmS
DO ,1 SUB #13 <- #52 A'"-m)1P
PLEASE READ OUT ,1 L=7rDW)aa
PLEASE GIVE UP DcFCKji
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Java '>^Xqn
public class Hello ( D}"&2
{ |@`"F5@,
public static void main(String[] args) *:arva5
{ Sa}D.SBg
System.out.println("Hello, world!"); bc}dYK3$q
} @
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} J#7(]!;F
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JSP )bYez
<% H%Y%fQ~^
out.print("Hello, world!"); dB`b9)Tk0z
%> YMAQ+A!
^"tqdeCb=
I>((o`
MIXAL g[!Cj,
TERM EQU 19 the MIX console device number
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ORIG 1000 start address
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START OUT MSG(TERM) output data at address MSG yH(V&T