“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。 k&wCa<Rs~R
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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》。 d7waBsf
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以下是用不同语言写成的Hello World程序的几个例子: :>4pH
Ada }%Mj`Bh
with Ada.Text_Io; use Ada.Text_Io; NbgK#;
procedure Hello is wX5Yo{
begin tljZE)
Put_Line ("Hello, world!"); Sggha~E2s
end Hello; 011 N
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汇编语言 <L'!EcHm%]
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x86 CPU,DOS,TASM X 4L"M%i
MODEL SMALL Ao?y2 [sE
IDEAL C_>
WU
STACK 100H gn82_
ul(pp+%S
DATASEG $ljzw@k
HW DB 'Hello, world!$' ohEIr2
%u=b_4K"j
CODESEG (:Y0^
MOV AX, @data M=rH*w{^
MOV DS, AX r4MPs-}oF
MOV DX, OFFSET HW ZNfQM&<d
MOV AH, 09H itYTV?bd
INT 21H G^1 5V'*
MOV AX, 4C00H .gQYN2#zb
INT 21H =Ju%3ptH0
END z:1"d
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x86 CPU,GNU/Linux,NASM F[q)ME+`)
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). qtR/K=^i
;Enter this into "hello.asm" then type:
E!EENg
;"nasm -f elf hello.asm" 61SbBJ6[
;"ld hello.o -o hello"
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;"./hello" 0n/+X[%Ti
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section .data ;data section declaration g0-~%A,
msg db 'Hello World!',0AH ?B32,AS@
len equ $-msg ;string length [QDM_n
{>Yna"p
section .text ;code section declaration cI\&&<>SlG
global _start ;entry point (start of execution) ruU &.mZ
_start: mov edx,len ;string length 5~FXy{ZIH
mov ecx,msg ;string start q[TGEgG
mov ebx,1 ;file handle: stdout ;q33t%j
mov eax,4 ;sys_write $DeVXW
int 80h ;kernel system call %CV.xDE8
~.$ca.Gf
mov ebx,0 ;return value %~I%*=o[
mov eax,1 ;sys_exit >@0U B@
int 80h ;kernel system call =rN_8&
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x86 CPU,Windows,MASM32 o(stXa
.386 PouWRGS_
.model flat,stdcall s x2\
option casemap:none !@T5]( zV
;Include 文件定义 JIXZI\Fk
include windows.inc oAF#bj_f
include user32.inc Qe;R3D=T;
includelib user32.lib d`3>@*NR<
include kernel32.inc @a}\]REn
includelib kernel32.lib @DuSii#.S
;数据段 X< 4f7;]O
.data h|N!U/(U
szCaption db 'A MessageBox!',0 %b>Ee>rdD
szText db 'Hello,world!',0 &+" )~2
+
;代码段 b,lIndj#
.code R]"
jr
start: Qsg([K
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Id=g!L|
invoke ExitProcess,NULL \*\ )zj*r
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 6tN!]
end start '5}@#Mi
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BEGIN { print "Hello, world!" } lO=~&_
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:
BASIC 5?-@}PL!Y
传统版BASIC(例如GWBASIC): xnPi'?A]
tQIa6c4|
10 PRINT "Hello, world!" u9D#5NvGs
20 END x?RYt4 S
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或在提示符输入: 0%"sOth
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?"Hello, world!":END #pr{tL
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现代版BASIC(例如Quick BASIC): um*!+Q
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Print "Hello, world!" nP#|JRn=
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以下的语句在Quick BASIC中同样有效: Z^O_7I<5E
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? "Hello,world!" Z Z9D6+R
sU0W)c;
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BCPL dT'd C
GET "LIBHDR" oe,yCdPs
giORc
LET START () BE Eh&-b6:
$( rObg:(z&\
WRITES ("Hello, world!*N") }fh<L CwTi
$) {P'^X+B0*
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Befunge ,f}u|D 3@
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, ):7mK03J
^_@ x};sti R
NM+(ss'
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Brainfuck wyB
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< fVz0H1\J&
+++++++++++++++.>.+++.------.--------.>+.>. 7'.]fs:
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Mb=j'H<N@
C -lS(W^r4
#include <stdio.h> W~j>&PK,?
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int main(void) GTke<R
{ 6cXZ3;a
printf("Hello, world!\n"); yb) a
return 0; =F09@C,
} S,f:nLT
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C++ v9"03=h
#include <iostream> )u1=, D
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int main() RG:_:%@%}
{ y.gjs<y
std::cout << "Hello, world!" << std::endl; ~z'Y(qG
return 0; %ZX3:2
} ")9jt^
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C++/CLI *BKIA
int main() ?u>A2Vc!
{ -'T^gEd)c
System::Console::WriteLine("Hello, world!"); ~^l;~&
} ?8YbTn1f)
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C# (C Sharp) hbm#H7Y
class HelloWorldApp B? 9"Ztb
{ L=&}s[5
public static void Main() 3x>Y
{ %v[KLMo'(
System.Console.WriteLine("Hello, world!"); =lL)g"xX
} zGa
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} 2:&L|;
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COBOL cXK.^@du
IDENTIFICATION DIVISION. zA|)9Dq
PROGRAM-ID. HELLO-WORLD. f |NXibmP
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ENVIRONMENT DIVISION. ~'N+O K
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DATA DIVISION. p ^Y2A
@#yl_r%
PROCEDURE DIVISION. 3e1%G#fu
DISPLAY "Hello, world!". )*&61
STOP RUN. iB + _+A
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z 1
9Dd`x7$a
Common Lisp tv5N
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(format t "Hello world!~%") cCcJOhk|d
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Nzb=h/;
DOS批处理 $F6GCM3Cx
@echo off #4V->I
echo "Hello, world!" \W|ymV_Ki
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&_' evZ8
Eiffel ~;uU{TT
class HELLO_WORLD a..LbQQ
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creation Ct$\!|aR
make f]2;s#cu
feature ?y,KN}s_
make is KK4rVb:-
local pxCQ=0k
io:BASIC_IO rpEN\S%7P
do 4W=fQx]
!!io fFXnD
io.put_string("%N Hello, world!") 3S
@)Ans
end -- make )ib$*dmUP
end -- class HELLO_WORLD I(b]V!mj:
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Erlang 3il$V78|
-module(hello). k h6n(B\
-export([hello_world/0]). 9}+X#ma.Nc
F6_en z
hello_world() -> io:fwrite("Hello, World!\n"). 7@&kPh}PG
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BN6cu9a
Forth :es=T`("A8
." Hello, world!" CR z6|kEc"{
%q6I-
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Fortran TgKSE1
WRITE(*,10) z`,dEGfh^
10 FORMAT('Hello, World!') V`G^Jyj
STOP QQD7NN>
END 5uJ!)Q
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Z:diM$Z?7
HTML COj^pdE3
<HTML> V7D<'!
<HEAD> yh'*eli
<TITLE> Hello World! </TITLE> (-VH=,Md
</HEAD> m= %KaRI
<BODY> ;D@ F
<p>Hello World!</p> L1&` 3a?pL
</BODY> {U4{v=,!I
</HTML> >)k[085t
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# wyjb:Ql
INTERCAL t{`uN
PLEASE DO ,1 <- #13 Vddod
DO ,1 SUB #1 <- #238 ]hRs -x
DO ,1 SUB #2 <- #112 Swgvj(y;!A
DO ,1 SUB #3 <- #112 z? GtC{L9
DO ,1 SUB #4 <- #0 <SdOb#2
DO ,1 SUB #5 <- #64 j"+6aD/lv
DO ,1 SUB #6 <- #238 Z%
]LZ/O8
DO ,1 SUB #7 <- #26 Ex6Kxd}8
DO ,1 SUB #8 <- #248 i_nUyH%b
DO ,1 SUB #9 <- #168 iz+,,UH
DO ,1 SUB #10 <- #24 8E>2
6@.
DO ,1 SUB #11 <- #16 ]qx!51S
DO ,1 SUB #12 <- #158 SQN{/")T
DO ,1 SUB #13 <- #52 g_eR&kuh
PLEASE READ OUT ,1 rEWuWv$
PLEASE GIVE UP ob/HO(h3
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Java mS.!lkV
public class Hello yr)e."#S
{ Np;tpq~
public static void main(String[] args) `:2np{
{ 9h<iw\$'
System.out.println("Hello, world!"); PGb}Y {
} w)h"?'m~
} @?</8;%3W
TLg 9`UA
McN'J.Sxp
JSP ;cb='s
<% $GVf;M2*
out.print("Hello, world!"); z[JM ]Wy
%> YL[y3&K
!H @nAz
Rb
<{o8
MIXAL D:(h^R0;
TERM EQU 19 the MIX console device number _HAr0R8BY
ORIG 1000 start address $<f+CtD4
START OUT MSG(TERM) output data at address MSG ul"Z%
1]
HLT halt execution Xg}~\|n
MSG ALF "MIXAL" C%P.`Nx A
ALF " HELL" W61:$y}8
ALF "O WOR" 6X$\:>
ALF "LD " @2\UjEo~
END START end of the program \d w ["k
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