“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。 K9YD)351t
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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》。 {{WA=\N8C
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以下是用不同语言写成的Hello World程序的几个例子: 5D32d1A
Ada nCz_gYcIx
with Ada.Text_Io; use Ada.Text_Io; ` 5.PPI\h2
procedure Hello is "XEKoeG{
begin
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Put_Line ("Hello, world!"); 61W
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end Hello; < c}cgD4
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汇编语言 =D2jJk?AX
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x86 CPU,DOS,TASM &F*L=Ng
MODEL SMALL %6vf~oG
IDEAL cnUYhxE+s
STACK 100H 8$H_:*A?
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DATASEG
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HW DB 'Hello, world!$' gdu8O!9)
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CODESEG
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MOV AX, @data }T}9AQ}|
MOV DS, AX `Eijy3>h
MOV DX, OFFSET HW Tw!]N%E
MOV AH, 09H >0W:snNK
INT 21H !8Rsz:7^-
MOV AX, 4C00H vT#$`M<
INT 21H {p{TG5rwX
END @C]Q;>^|
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x86 CPU,GNU/Linux,NASM cZ@z]LY.g
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Yy$GfjJtL]
;Enter this into "hello.asm" then type: "t-u=aDl-.
;"nasm -f elf hello.asm" b#:Pl`n6u
;"ld hello.o -o hello" }E\ b_.
;"./hello" /$
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vakAl;
section .data ;data section declaration b>B.3E\Pc
msg db 'Hello World!',0AH dc.o K4G}
len equ $-msg ;string length '8Q:}{
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section .text ;code section declaration |hp_<F9.
global _start ;entry point (start of execution) \BV$p2m5-
_start: mov edx,len ;string length \B0,?_i
mov ecx,msg ;string start 0wxlsny?
mov ebx,1 ;file handle: stdout k}5Sz
mov eax,4 ;sys_write 5ayM}u%\~
int 80h ;kernel system call r+}5;fQJ
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mov ebx,0 ;return value 8| 6:
mov eax,1 ;sys_exit 4xg7oo0iJ
int 80h ;kernel system call /.'tfy$
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x86 CPU,Windows,MASM32 z$VA]tI(
.386 *?zyF@K{%
.model flat,stdcall d+1q[,-
option casemap:none 2{v$GFc/
;Include 文件定义 TTS.wBpR,
include windows.inc FCC9Ht8U?
include user32.inc }/ p>DMN
includelib user32.lib &i&k 4
include kernel32.inc QJL%J
includelib kernel32.lib DS@ZE Q`F
;数据段 !$/1Q+
.data /AJ#ngXz
szCaption db 'A MessageBox!',0 U#I8Rd I,
szText db 'Hello,world!',0 p7UdZOi2
;代码段 03F%!Rm/j
.code 7X
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start: Op&i6V}<s
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK h&$7^P
invoke ExitProcess,NULL }r}$8M+1
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> }tvLe3O
end start As&=Pb9
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BEGIN { print "Hello, world!" } uQwKnD?F+e
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BASIC C%$:Oq
传统版BASIC(例如GWBASIC): 7oPLO(0L
#J1vN]g
10 PRINT "Hello, world!" FKTdQg|NZ
20 END J}Q4.1WG$
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或在提示符输入: n+C]&6-b
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?"Hello, world!":END j.? '*?P
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现代版BASIC(例如Quick BASIC): *SW.K{{
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Print "Hello, world!" |\yVnk!c
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以下的语句在Quick BASIC中同样有效: q
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? "Hello,world!" [0M2`x4`
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BCPL Q}pnb3J>T
GET "LIBHDR" V'kCd4
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LET START () BE sFd"VRAV~E
$( "|{3V:e>a
WRITES ("Hello, world!*N") <r6e23
$) f}jo18z%
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Befunge 6`/nA4S4.
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Brainfuck (7C&I-l
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< gmU_# J%~
+++++++++++++++.>.+++.------.--------.>+.>. h/I'9&J>*
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C 80PlbUBb!
#include <stdio.h> 9.<d S
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int main(void) yZ
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{ Ee& A5~
printf("Hello, world!\n"); (&n4^tJ+_
return 0; ls5s}X
} -JL
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C++ $~h\8
#include <iostream> 3Uzb]D~u
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int main() 2_^{Vez@I
{ eY3l^Su1
std::cout << "Hello, world!" << std::endl; 3|$>2IRq
return 0; .rfufx9Sw
} {fkW0VB;
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C++/CLI RR2Q
int main() k=t\
{ 5F@7A2ZR
System::Console::WriteLine("Hello, world!"); ZTCzD8
} d3A= (/>D
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C# (C Sharp) l?>sLKo9
class HelloWorldApp ;B%NFvG
{ ztSP4lW
public static void Main() s%tPGjMq
{ 8"!Z^_y)
System.Console.WriteLine("Hello, world!"); l2v4SvbX
} b;wf7~a*
} "AN2K
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{@T8i^EI
COBOL =@#[@Ia
IDENTIFICATION DIVISION. %O5
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PROGRAM-ID. HELLO-WORLD. Ri$wt.b
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ENVIRONMENT DIVISION. BMw_F)hTO
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DATA DIVISION. 6S-1Wc4
X#l]%IrW!
PROCEDURE DIVISION. b 9M.p*!
DISPLAY "Hello, world!". Q'f!392|
STOP RUN. 0\G`AO;D
V=<OV]0
Pn )^mt
Common Lisp i^c
(format t "Hello world!~%") 4"$K66yk@
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gTz66a@i
DOS批处理 &!I^m
@echo off !V~`e9[rl
echo "Hello, world!" al/3$0#U
{}Y QB'}
1}#(4tw)
Eiffel >>lT-w
class HELLO_WORLD hg}Rh
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creation l26DPtWi
make jM%qv
feature "j+zd&*={
make is lO482l_t
local ,vBi)H
io:BASIC_IO (2He]M\
do fH_G;#q
!!io xPa>-N=*
io.put_string("%N Hello, world!") JpVV0x/Q/_
end -- make 2ql7*g?Uq@
end -- class HELLO_WORLD +PC<#
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4:$?u}9[:[
Erlang :3qA7D }
-module(hello). %|(~k*s4
-export([hello_world/0]). $y!k)"k
NB]T~_?]*
hello_world() -> io:fwrite("Hello, World!\n"). 7g(,$5
;6N@raP7
6d~[M y
Forth \tc`Aj%K
." Hello, world!" CR &FrW(>2
;IhkGPpWP
8Z;wF
Fortran *G"vV>OSV
WRITE(*,10) 0{ovLzW
10 FORMAT('Hello, World!') {7^7)^@
STOP yteJHaq
END 'jp nQcwxx
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H-%)r&"vn
HTML MF>1u%
<HTML> ?>lvV+3^`
<HEAD> u@SE)qg
<TITLE> Hello World! </TITLE> ajy.K'B*
</HEAD> Q1qf'u
<BODY> 8Rq+eOP=S
<p>Hello World!</p> ZoJ:4uo
N`
</BODY> fo])=KM
</HTML> 'U<-w$!f+^
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INTERCAL ]Xcqf9k
PLEASE DO ,1 <- #13 "rz|sbj
DO ,1 SUB #1 <- #238 y}jX/Ln
DO ,1 SUB #2 <- #112 Ba/Z<1)
DO ,1 SUB #3 <- #112 H27J kZ&
DO ,1 SUB #4 <- #0 zuOx@T^
DO ,1 SUB #5 <- #64 ARYqX\-e
DO ,1 SUB #6 <- #238 41%B%K*
DO ,1 SUB #7 <- #26 q_Td!?2?
DO ,1 SUB #8 <- #248 2Up1
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DO ,1 SUB #9 <- #168 ;$W/le"Xr
DO ,1 SUB #10 <- #24 Y7R"~IA$
DO ,1 SUB #11 <- #16 |xaJv:96%
DO ,1 SUB #12 <- #158 O~F/pJN`
DO ,1 SUB #13 <- #52 ;u LD_1%
PLEASE READ OUT ,1 'tK5s>gv<
PLEASE GIVE UP u/FnA-L4
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Java <a *X&P
public class Hello =Haqr*PDx
{ VXvr`U\
public static void main(String[] args) _H|c_
{ zECdj'/
System.out.println("Hello, world!"); =p>"PqJ/7n
} P/._ tQu6
} y|!%C-P
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gkS#=bv9e@
JSP *a Y`[,4#$
<% *&)<'6
out.print("Hello, world!"); d,au&WZ;_
%> c_xtwdkL9
TDg#O!DUF
0N.tPF}
MIXAL Xr~6_N{J
TERM EQU 19 the MIX console device number hd1H
ORIG 1000 start address yvo~'k#c
START OUT MSG(TERM) output data at address MSG '01H8er
HLT halt execution |i-Q fpn
MSG ALF "MIXAL" xKKL4ws
ALF " HELL" D3yG@lIP3
ALF "O WOR" ~1YL
ALF "LD " *&B1(&{:V
END START end of the program tYyva
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GP ;c$pC
Nuva \sFdp!M}2
<..直接输出..> N1WP
Hello, world! j.4oYxK!s/
cA ;'~[
<..或者..> W?{:HV
}AG$E}~/
<. ZjY_AbD
// 不带换行 w[PWJ! <
? "Hello, world!" HbF.doXK
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// 或者 H n+1I
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// 带换行 YMP:T?vMVh
?? 'Hello, world!' ^a|$z$spf
.> /_E:sI9(
/h%<e
v'*Q[
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OCaml vBsd.2t~
let main () = >x)YdgJ*
print_endline "Hello world!";; WM BntB
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4*OL^\%
Pascal vOsd>3"
program Hello; cs`/^2Vf"#
begin Y."ujo #bB
writeln('Hello, world!'); ?_ [xpK()
end. zLXmjrC
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Perl -yeQQ4b
#!/usr/local/bin/perl 0m,A`*o
print "Hello, world!\n"; "!XeK| Wi
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PHP PRl\W:_t
<?php +O3zeL
print("Hello, world!"); =25qY"Mf
?> ?RvXO'm l
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(,Yb]/O*
Pike ws
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#!/usr/local/bin/pike I#@iA!
int main() #(h~l> r
{ )eGGA6G
write("Hello, world!\n"); }GsZ)\!$4
return 0; -h*Yd)
} >b,o yM
dN;kYWRK
NUb^!E"
PL/I tx&>Eo
Test: procedure options(main); B{a:cz>0<
declare My_String char(20) varying initialize('Hello, world!'); {f#{NA5
put skip list(My_String); aGNVqS%y
end Test; :gY$/1SYD
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;_K+b,
Prolog %f\{ ]
goal GmtMA|
write("hello,world!"). 2.}<VivT
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Python y#HD1SZ
#!/usr/local/bin/python !^!<Xz;
print "Hello, world!" PB4E_0}h
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hxx,E>k
REXX _`/0/69
say "Hello, world!" wQ!~c2a<8
#`:s:bwM:
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Ruby tu77Sb
#!/usr/bin/ruby
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print "Hello, world!\n" N<hbV0$ %
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