“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。 3wo'jOb
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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》。 pSXEJ 2k
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以下是用不同语言写成的Hello World程序的几个例子: ]6q*)q:`
Ada St_Sl:m$
with Ada.Text_Io; use Ada.Text_Io; 1[px`%DR~
procedure Hello is >-eS&rma
begin s*eyTm
Put_Line ("Hello, world!"); }9
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end Hello; ]An_5J
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汇编语言 k3#wLJ
5DUi4 Cbgy
x86 CPU,DOS,TASM qNy-o\;XN
MODEL SMALL 8,H~4Ce3
IDEAL lj
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STACK 100H #'wL\3
$q^O%(
DATASEG sN=KR qe
HW DB 'Hello, world!$' vv!Bo~L1,
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CODESEG ePi
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MOV AX, @data _=6vW^s
MOV DS, AX 8a?IC|~Pz
MOV DX, OFFSET HW i"<ZVw
MOV AH, 09H Pm~,Ky&Hl
INT 21H 9V.+U7\w
MOV AX, 4C00H C!hXEtK
INT 21H d;<.;Od$`
END $.;iu2iyo
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k 5t{
x86 CPU,GNU/Linux,NASM 'Z y{mq\
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ~RAzFLt6x
;Enter this into "hello.asm" then type: fs7~NY
;"nasm -f elf hello.asm" pRb<wt7v
;"ld hello.o -o hello" }&C dsCM>2
;"./hello" ?S8$5gA
@f\
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section .data ;data section declaration :bI,rEW#_
msg db 'Hello World!',0AH " xlJs93c
len equ $-msg ;string length M.X}K7Z_/
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section .text ;code section declaration =#jTo|~u4o
global _start ;entry point (start of execution) [+_\z',u
_start: mov edx,len ;string length } mgVC
mov ecx,msg ;string start i:;$oT
mov ebx,1 ;file handle: stdout a!&bc8J7
mov eax,4 ;sys_write ?~{rf:Y
int 80h ;kernel system call ]bf'
7bHE!#L`0
mov ebx,0 ;return value =%xIjxYl
mov eax,1 ;sys_exit ta@ISRK
int 80h ;kernel system call &&ja|o-
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x86 CPU,Windows,MASM32 7(H?k
.386 y)0gJP
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.model flat,stdcall <. ezw4ju
option casemap:none r!CA2iK`
;Include 文件定义 `d.Gw+Un
include windows.inc F|9a}(-7
include user32.inc
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includelib user32.lib x-tm[x@;o
include kernel32.inc u6]gQP">I
includelib kernel32.lib BEFe~* ~
;数据段 PE^eP}O1
.data 9+W!k^VWq
szCaption db 'A MessageBox!',0 /@6E3lhS
szText db 'Hello,world!',0 P>>f{3e.
;代码段 y|$vtD%c
.code 1<;\6sg
start: eog\pMv
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK CZF^Wxk
invoke ExitProcess,NULL *Rz!i m|
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> jQO*oq}
end start 0kkRK*fp}x
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AWK E*Pz <
BEGIN { print "Hello, world!" } =`r ppO
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BASIC 6\%r6_.d
传统版BASIC(例如GWBASIC): B >ms`|q=l
xV"6d{+
10 PRINT "Hello, world!" ?f(pQy@V
20 END %g!yccD9
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或在提示符输入: =PI^X\if88
Uf=vs(
?"Hello, world!":END 3| GNi~
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现代版BASIC(例如Quick BASIC): [c,|Lw4
xhw8#
Print "Hello, world!" l~`txe
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以下的语句在Quick BASIC中同样有效: 5cPSv?x^F@
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? "Hello,world!" NEjPU#@c
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BCPL
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GET "LIBHDR" 45]Ym{]
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LET START () BE !%SdTaC{T
$( ?j &V:kF
WRITES ("Hello, world!*N") %i;r]z-
$) Z'7 c^c7_
W@R$'r,@O
M!;`(_2
Befunge jydp4ek_n
"!dlrow olleH">v T*7S;<2
, "`gf y
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Brainfuck ?$>u!V<'
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< .=.yZ
+++++++++++++++.>.+++.------.--------.>+.>. {hkM*:U
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C F'$9en2I:
#include <stdio.h> pko!{,c
-o=P85V
int main(void) ]# tGT0
{ clPZd
printf("Hello, world!\n"); YR^Ee8 _H
return 0; @&nx;K6h
} V0SW 5
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d/ 'A\"o+
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C++ 3&drof\{
#include <iostream> g]EQ2g_N1
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int main() CSd9\V
{ ~:P8g<w
std::cout << "Hello, world!" << std::endl; Pj1K
return 0; =]5DYRhX]
} y]~+ `9
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C++/CLI (hRgYwUa<
int main() 89:?.'
{ #cSw"A
System::Console::WriteLine("Hello, world!"); Mipm&5R
} U5@TaGbx
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C# (C Sharp) .,d$%lN
class HelloWorldApp ^a:vJ)WB7
{ o2 T/IJP
public static void Main() 7Ap~7)z[
{ XNkQk0i;g&
System.Console.WriteLine("Hello, world!"); vV:MS O'r
} WwCK K
} LX(iuf+l
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COBOL ^t/'dfF
IDENTIFICATION DIVISION. k#IS,NKE
PROGRAM-ID. HELLO-WORLD. ZF/J/;uI
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ENVIRONMENT DIVISION. T}b(
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DATA DIVISION. IgHs&=
M'>D[5;N~
PROCEDURE DIVISION. $Z(g=nS>
DISPLAY "Hello, world!". )\I? EU8
STOP RUN. Up!ZCZ$RC
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Common Lisp
alb+R$s
(format t "Hello world!~%") ]"2 v7)e
3 -_U-:2"
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DOS批处理 Z)6nu)
@echo off ZB_16&2Ow
echo "Hello, world!" **w*hd]
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#<WyId(
Eiffel 5u
u2 _B_L
class HELLO_WORLD 3wa<,^kqy
r:8]\RU
creation ]\os`At
make :>er^\
feature \0^r J1*
make is t7*H8
local Hq"<vp
io:BASIC_IO _A~~L6C
do v,!Y=8~9
!!io }G,SqpcG
io.put_string("%N Hello, world!") @6i8RmOu}
end -- make &=6cz$]z
end -- class HELLO_WORLD UVoLHd
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Erlang <p L;-
-module(hello). J.1ln
=Y
-export([hello_world/0]). S\{^LVXTMd
~d#;r5>
hello_world() -> io:fwrite("Hello, World!\n"). Y+"hu2aPkY
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d6d(?"
Forth 4-}A'fTU8
." Hello, world!" CR @L>NN>?SGQ
>gOI]*!5
!+|N<`
Fortran C$..w80/1
WRITE(*,10) (61twutC
10 FORMAT('Hello, World!') K+\0}qn
STOP K^cWj_a"
END EfrkB"
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HTML |>/&EElD
<HTML> /Y\E68_Fh
<HEAD> eI=Y~jy
<TITLE> Hello World! </TITLE> yY@s(:
</HEAD> ,0<F3h
<BODY> X?}GPA4 W
<p>Hello World!</p> g%q?2Nv
</BODY> B,m$ur#$
</HTML> }2!5#/^~
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zhvk%Y:
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Q3'B$,3O^
INTERCAL M;TfD
PLEASE DO ,1 <- #13 "JUQ)> !?
DO ,1 SUB #1 <- #238 tm36Lw
DO ,1 SUB #2 <- #112
!K^Z5A_;
DO ,1 SUB #3 <- #112 "/K&qj
DO ,1 SUB #4 <- #0 w<F;&';@h
DO ,1 SUB #5 <- #64 )zLS,/pk^
DO ,1 SUB #6 <- #238 6<Pg>Bg
DO ,1 SUB #7 <- #26 + x;ML
DO ,1 SUB #8 <- #248 gq:TUvX
DO ,1 SUB #9 <- #168 i>if93mpj
DO ,1 SUB #10 <- #24 J&U0y
DO ,1 SUB #11 <- #16 8,H5G`
DO ,1 SUB #12 <- #158 xP/1@6]_Je
DO ,1 SUB #13 <- #52 6_&6'Vq
PLEASE READ OUT ,1 ^qN1~v=hS
PLEASE GIVE UP pv?17(w(\
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Java J0*]6oD!
public class Hello A*;^F]~'
{ g;Sg
2
public static void main(String[] args) )6R#k8'ERr
{ ^(m6g &$(
System.out.println("Hello, world!"); [?f.0q
} ]{6yS9_tuI
} Q}f}Jf3P
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0qd;'r<
JSP $I6eHjYT
<% qpwh #^2
out.print("Hello, world!"); g(Xg%&@KZ
%> i6 ypx
)! *M
71
Q3O .<9S
MIXAL W0T
i ^@
TERM EQU 19 the MIX console device number <pl2
dxy
ORIG 1000 start address ,vdP
#:
START OUT MSG(TERM) output data at address MSG s$\8)V52
HLT halt execution B[_b J
*
MSG ALF "MIXAL" >0+|0ba
ALF " HELL" c+i`Zd.m<
ALF "O WOR" cxJK>%84
ALF "LD " I/b8
END START end of the program $\@ V4
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<..直接输出..> WT!\X["FI$
Hello, world! |%cO"d^ri
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<..或者..>
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<. DUliU8B}\
// 不带换行 -r'seb5
? "Hello, world!" ~S_IU">E
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// 或者 &?Z)V-1H
<