“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。 eFf9T@
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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》。 ujBm"p_|
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以下是用不同语言写成的Hello World程序的几个例子: Kf(Px%G6K
Ada Eul3 {+]
with Ada.Text_Io; use Ada.Text_Io; R=,
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procedure Hello is }aa]1X(u
begin Evg#sPu\
Put_Line ("Hello, world!"); A['(@Bz#7~
end Hello; m8F
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lf
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汇编语言 [N%InsA9k
tP2.D:( R
x86 CPU,DOS,TASM (vi^ t{k
MODEL SMALL zPHx\z"
IDEAL K%/\XnCY
STACK 100H <jYyA]Zy5
-"2 t^Q
DATASEG roG<2i F
HW DB 'Hello, world!$' U+4[w`a}
be_h
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CODESEG 3d1xL+
MOV AX, @data %G6x \[,
MOV DS, AX 'Pn:10;
MOV DX, OFFSET HW n!X%i+|4x
MOV AH, 09H !H c6$
INT 21H Er$&}9G+-
MOV AX, 4C00H SJLs3iz_)
INT 21H /4+zT?f
END =F/ R*5:T
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x86 CPU,GNU/Linux,NASM =c#mR" 1
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). mAIl)mq|g
;Enter this into "hello.asm" then type: RhF<{U.
;"nasm -f elf hello.asm" +:70vZc:V@
;"ld hello.o -o hello" eL)m(
;"./hello" aYpc\jJ
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section .data ;data section declaration yEJ3O^(F
msg db 'Hello World!',0AH nDckT+eJ
len equ $-msg ;string length /Hm/%os
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section .text ;code section declaration myOW^
global _start ;entry point (start of execution) \ E5kpm
_start: mov edx,len ;string length egfd=z=2un
mov ecx,msg ;string start 7hMh%d0d(_
mov ebx,1 ;file handle: stdout TBF{@{.d
mov eax,4 ;sys_write "~6&rt
int 80h ;kernel system call |@R/JGB^
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mov ebx,0 ;return value mN R}%s
mov eax,1 ;sys_exit wu{%gtx/;^
int 80h ;kernel system call km
lb,P
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l 8GAZ*+
x86 CPU,Windows,MASM32 i \lr
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.386 XJS^{=/
.model flat,stdcall +Bt%W%_X
option casemap:none Dp^=% F{t
;Include 文件定义 ~W B-WI\
include windows.inc
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include user32.inc V!+<
includelib user32.lib i#4E*B_-
include kernel32.inc NW21{}=4
includelib kernel32.lib B4m34)EOE
;数据段 %JA^b5''
.data 'q8:1i9\[
szCaption db 'A MessageBox!',0 7vGAuTfi/@
szText db 'Hello,world!',0 yB;K|MXy?
;代码段 DC$> 5FDv
.code ~_-+Q=3
start: y{tM|
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK #Wv8+&n
invoke ExitProcess,NULL 8<EU|/O
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> N#:W#C{16w
end start nnd-d+$
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AX )dZdd
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BEGIN { print "Hello, world!" } $KGRpI
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BASIC JVPLE*T
传统版BASIC(例如GWBASIC): eE0nW+i
GN|xd+O_
10 PRINT "Hello, world!" N\hHu6
20 END lOIf4
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或在提示符输入: bGp3V. H
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?"Hello, world!":END >T29kgF2
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现代版BASIC(例如Quick BASIC): !OR%AdxB
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Print "Hello, world!" R&L^+?
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以下的语句在Quick BASIC中同样有效: \!r,>P
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? "Hello,world!" }/%^;@q ;
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BCPL %h=cwT6
GET "LIBHDR" &[-b#&y
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LET START () BE +"[}gss!@
$( E
uk[ @1
WRITES ("Hello, world!*N")
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$) Eg]tDPN1
<cR]-Yr~
:x_;-
Befunge u-X P`
"!dlrow olleH">v t|k-Bh:x
, Z E},xU%
^_@ ]}N&I_mU
koOp:7r
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Brainfuck ?C|b>wM/
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< c_.4~>qw
+++++++++++++++.>.+++.------.--------.>+.>. =:7OS>x
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C P}$DCD<$U
#include <stdio.h> WH0$v#8`v
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int main(void) dW2Lvnh!>/
{ p?4h2`P
printf("Hello, world!\n"); ^-pHhh|g
return 0; )\Ay4d
} 5R"(4a P
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C++ }SF<. A
#include <iostream> 5oR/Q|^
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int main() }6^d/nE*T
{ j= Ebk;6p
std::cout << "Hello, world!" << std::endl; '"<h;|
return 0; o+.LG($+U
} m%G:|`f7
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C++/CLI x5)YZ~5
int main() zz~AoX7V6
{ W_P&;)E
System::Console::WriteLine("Hello, world!"); )]a{cczL"
} C@Fk
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C# (C Sharp) j6{9XIRo_
class HelloWorldApp )=c/{
{ tHV81F1J
public static void Main() aR}L-
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{ l^*'W(%
System.Console.WriteLine("Hello, world!"); E[N3`"
} &>&UqWL
} xsIuPL#_
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COBOL 9EqU
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IDENTIFICATION DIVISION. 0qUBt9rA
PROGRAM-ID. HELLO-WORLD. hs m%o\
pAd 8-a
ENVIRONMENT DIVISION. ic_q<Y}
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DATA DIVISION. $8"G9r
;"77?)
PROCEDURE DIVISION. vw/L|b7G
DISPLAY "Hello, world!". {x#I&ra
STOP RUN. 3"ii_#1
:n} NQzs
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Common Lisp &n)=OConge
(format t "Hello world!~%") ^k7`:@
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H3{FiB]
DOS批处理 <.yL&$9
@echo off 4.}{B_)LK
echo "Hello, world!" D[5Qd)PIL
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ogrh"
Eiffel YAvOV-L
class HELLO_WORLD D|`I"N[<
0$~zeG"
creation 2#y!(D8
make k15B5
feature Bi'qy]%
make is ksB-fOv*N
local 6ofi8(n[
io:BASIC_IO >*A"tk#oR
do V#Hg+\{d
!!io ?7Y6: zo$^
io.put_string("%N Hello, world!") X_6h8n}i
end -- make 6/Pw'4H9$
end -- class HELLO_WORLD "?<$>\@;
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Erlang =/J{>S>(i
-module(hello). ,o3{?o]s
-export([hello_world/0]). 8 )W{C>
!G0OD$
hello_world() -> io:fwrite("Hello, World!\n"). F"k.1.
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w[bhm$SX]B
Forth Vlk]
." Hello, world!" CR hd@ >p.
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{g%F 3-
Fortran Y]ZNAR
WRITE(*,10) ^+hqGu]M
10 FORMAT('Hello, World!') H1alf_(_
\
STOP <)vjoRv
END <d$L}uQwg
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HTML 2Op\`Ht&
<HTML> &rcC7v K9
<HEAD> w _*|u
<TITLE> Hello World! </TITLE> b R6g^Yf
</HEAD> jP]I>Tq
<BODY> S-M|
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<p>Hello World!</p> IwE{Zvr
</BODY> C1/<t)^
</HTML> 'g4t !__
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lcv&/ A
^^ Q'AE
INTERCAL v-V#?+#
PLEASE DO ,1 <- #13 IsaL+elq|
DO ,1 SUB #1 <- #238 Mn-f
DO ,1 SUB #2 <- #112 )4[Yplo
DO ,1 SUB #3 <- #112 lHV&8fny
DO ,1 SUB #4 <- #0 K%XQdMv
DO ,1 SUB #5 <- #64 RjII(4Et
DO ,1 SUB #6 <- #238 *K{-J*
DO ,1 SUB #7 <- #26 /_N*6a~
DO ,1 SUB #8 <- #248 0I8w'/s_g9
DO ,1 SUB #9 <- #168 4QK~qAi
DO ,1 SUB #10 <- #24 P4M*vZq)
DO ,1 SUB #11 <- #16 d!V;\w
DO ,1 SUB #12 <- #158 c
k$ > yk
DO ,1 SUB #13 <- #52 DrG9Kky{
PLEASE READ OUT ,1 X&B2&e;
PLEASE GIVE UP igoXMsifT+
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$\W|{u`
Java VSK!Pc.G}
public class Hello 1;; is
{ g UfLw
public static void main(String[] args) `
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{ 6#,VnS)`q
System.out.println("Hello, world!"); e?Pzhha
} 9@nDXZPY&
} =@98Gl9!
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#].n0[
JSP :YL`GSl
<% Ig9gGI,
out.print("Hello, world!"); jTo-xP{lC
%> :# 1d;jx
oKl^Ttr
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MIXAL uQ^r1 $#
TERM EQU 19 the MIX console device number -h5yg`+1N\
ORIG 1000 start address hAPWEh^
START OUT MSG(TERM) output data at address MSG $=7'Cm?
HLT halt execution -`z`K08sT
MSG ALF "MIXAL" x%acWeV5
ALF " HELL" .'zXO
ALF "O WOR" ogcEv>0
ALF "LD " ?tWcx;h:>
END START end of the program 9uV'#sR
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Nuva '@Zau\xC
<..直接输出..> '8.r
Hello, world! ;Z\1PwT
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<..或者..> XcoV27
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