“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。 b+qdl`Vd
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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》。 UM QsYD)
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以下是用不同语言写成的Hello World程序的几个例子: b&~s}IX
Ada 0nV|(M0lu?
with Ada.Text_Io; use Ada.Text_Io; =f*Wj\
procedure Hello is _]~= Kjp
begin 0zvA>4cq)
Put_Line ("Hello, world!"); g<"k\qs7
end Hello; AyUiX2=w1
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汇编语言 [J71aH
K=`;D
x86 CPU,DOS,TASM K)d]3V!
MODEL SMALL $7bl,~Z
IDEAL |KQkmc
STACK 100H j/<z[qr
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DATASEG 4`Z8EV
HW DB 'Hello, world!$' TUaW'
0cxk)l%
CODESEG |#6))Dh
MOV AX, @data vuCl(/P`
MOV DS, AX !33)6*s
MOV DX, OFFSET HW PF4"J^V
MOV AH, 09H ILQB%0!
INT 21H LAT%k2%Wx
MOV AX, 4C00H 2/]74d8
INT 21H k-uwK-B}v+
END ZLRAiL
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x86 CPU,GNU/Linux,NASM I3wv6xZ2
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). W$X@DXT=o
;Enter this into "hello.asm" then type: 6HyndB^
;"nasm -f elf hello.asm" Pfv| K;3i
;"ld hello.o -o hello" _poe{@h!
;"./hello"
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section .data ;data section declaration zAxscDf'
msg db 'Hello World!',0AH Fu%%:3_
len equ $-msg ;string length 1sT%g}w@|
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section .text ;code section declaration } 9qbF+b
global _start ;entry point (start of execution) 4CT _MAj
_start: mov edx,len ;string length A"`^Abrm
mov ecx,msg ;string start TL?(0]Hfe
mov ebx,1 ;file handle: stdout Q0\tK=Z/
mov eax,4 ;sys_write W_ =
int 80h ;kernel system call d
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mov ebx,0 ;return value BV8-\R@
mov eax,1 ;sys_exit Z?#_3h$"T
int 80h ;kernel system call )TmqE<[
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opKk#40
x86 CPU,Windows,MASM32 ,bQbj7
.386 .Kn)sD1
.model flat,stdcall Q^iE,_Zq
option casemap:none jBTXs5q
;Include 文件定义 c)HHc0KD
include windows.inc =deqj^&@
include user32.inc R>ak 3Y
includelib user32.lib \;h+:[<e1
include kernel32.inc y$]gmg
includelib kernel32.lib ]7d~,<3R
;数据段 Jf/X3\0N7
.data e+!+(D
szCaption db 'A MessageBox!',0 /lC&'h T
szText db 'Hello,world!',0 =`b/ip5
;代码段 eu]t.Co[X
.code |7K[+aK
start: T JB)]d<
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK C{i9~80n
invoke ExitProcess,NULL M%3 \]&
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> fcuU,A
end start .)7r /1o
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AWK |HjoaN )
BEGIN { print "Hello, world!" } <h$Nh0
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BASIC #SHmAB
传统版BASIC(例如GWBASIC): D*>EWlZ
_86#$|kw
10 PRINT "Hello, world!" D['z/r6F
20 END DA/l`Pn
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或在提示符输入: B]`!L/
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?"Hello, world!":END V-y"@0%1
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现代版BASIC(例如Quick BASIC): |M*jo<C
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Print "Hello, world!" 8sDbvVh1F
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以下的语句在Quick BASIC中同样有效: _h%
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d 6$,iw@>^
? "Hello,world!" \(nb
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BCPL p19[qy~.
GET "LIBHDR" N2?o6)
S~dD ;R
LET START () BE N=>6PLie
$( uhyw?#f
WRITES ("Hello, world!*N") P87!+pB(
$) W"m\|x
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Befunge j>2Jw'l;?
"!dlrow olleH">v oD$8(
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Brainfuck bYuQ"K
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< E8TJ*ZU
+++++++++++++++.>.+++.------.--------.>+.>. 1v)X]nW
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C ]L'FYOfrpx
#include <stdio.h> }Pm>mQZ},
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int main(void) ?4X8l@fR
{ R&w2y$
printf("Hello, world!\n"); M*DF tp<
return 0; oYYns%r}{
} A)5-w`1
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C++ Qfhhceb6#J
#include <iostream> Xx;RH9YYz
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int main() zeqP:goy
{ b.qp&2 A
std::cout << "Hello, world!" << std::endl; z|Z<S+=f
return 0; kI|Vv90l
} r]XXN2[jO
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C++/CLI }3t bqFiH
int main() *wNX<R.
{ _ n.2'
System::Console::WriteLine("Hello, world!"); 5:jbd:o
} 3xhv~be
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C# (C Sharp) #!IezvWf
class HelloWorldApp yOn +Y
{ ~Rzn =>a
public static void Main() < bHu9D
{ \]y4e^FZZ
System.Console.WriteLine("Hello, world!"); jB8n\8Bs
} E$z)$`"1
} ,&S^R yc
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COBOL `aFy2x`3
IDENTIFICATION DIVISION. Nw'3gJ:
PROGRAM-ID. HELLO-WORLD. KtWG2
} z4=3'
ENVIRONMENT DIVISION. |aiP7C
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DATA DIVISION. SrV+Ox
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PROCEDURE DIVISION. 2#4_/5(j*
DISPLAY "Hello, world!". >uN`q1?l'
STOP RUN. aqvt$u8
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Common Lisp Z, Kbt
(format t "Hello world!~%") 5YJn<XEc
m1 78S3
B;'Dh<J1
DOS批处理 _(J 7^rN
@echo off ^7`"wj14
echo "Hello, world!" GyV3 ]Qqj
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p*10u@,
Eiffel +w Oa
class HELLO_WORLD @Taj++ua
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creation DXlP(={*
make Dc |!H{Yr
feature EAQg4N:D7L
make is `nccRy<l
local SWr?>dl
io:BASIC_IO so|5HR|
do $AAv%v
!!io tE0DST/
io.put_string("%N Hello, world!") .BGM1ph}~
end -- make v*%#Fp,g8
end -- class HELLO_WORLD lkf(t&vL2
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Erlang nAn/V u
-module(hello). 0$3\DS<E
-export([hello_world/0]). 'iO?M'0gE#
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hello_world() -> io:fwrite("Hello, World!\n"). $ WA Fr
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Forth P"0S94o:5J
." Hello, world!" CR g(t"+
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Fortran 3vPb}
WRITE(*,10) U@+
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10 FORMAT('Hello, World!') ]Q=D'1MM
STOP hoI?,[@F
END ;cl\$TDL
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HTML |R:gu\gG
<HTML> e Ll+F%@
<HEAD> 9Vz1*4Ln
<TITLE> Hello World! </TITLE> t4pc2b
</HEAD> b:/ ;
<BODY> Vh^fbv`?
<p>Hello World!</p> x\r7q
</BODY> 3o%,8l,
</HTML> 6V\YYrUz
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Etty{r}
INTERCAL a'f"Zdh%w
PLEASE DO ,1 <- #13 FR9qW$B
DO ,1 SUB #1 <- #238 VTySKY+
DO ,1 SUB #2 <- #112 +[*VU2f t
DO ,1 SUB #3 <- #112
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DO ,1 SUB #4 <- #0 ![3#([>4>
DO ,1 SUB #5 <- #64 Xn-GSW3{
DO ,1 SUB #6 <- #238 9@
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DO ,1 SUB #7 <- #26 r(iT&uz
DO ,1 SUB #8 <- #248 QlJ
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DO ,1 SUB #9 <- #168 L ^} Z:I
DO ,1 SUB #10 <- #24 G$pTTT6#
DO ,1 SUB #11 <- #16 "l!WO`.zp=
DO ,1 SUB #12 <- #158 y0cHs|8
DO ,1 SUB #13 <- #52 $9<q'hf<w
PLEASE READ OUT ,1 ;vvO#3DWM
PLEASE GIVE UP /PG+ s6
By {zX,6'
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Java dt(~)*~R
public class Hello >_P7 k5Y^
{ zWpJ\/k~
public static void main(String[] args) ;EbGW&T
{ J#vIzQ
System.out.println("Hello, world!"); $&/JY
} I&~kwOP
} C( 8i0(1
/y lO["<Q
_O)xE9t#ru
JSP Bz<T{f
<% OJiW@Z_\
out.print("Hello, world!"); "MHm9D?5
%> Pe6}y
ifj%!*
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MIXAL r_nB-\
TERM EQU 19 the MIX console device number P'.MwS
ORIG 1000 start address HE58A.Q&
START OUT MSG(TERM) output data at address MSG 6yk=4l\
HLT halt execution P8!ON=
MSG ALF "MIXAL" c* 2U'A
ALF " HELL" g^|}e?
ALF "O WOR" :8b{|}aYV
ALF "LD " I^"ouM9}Q
END START end of the program 't:$Lx
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Nuva EdFCaW}""
<..直接输出..> .j?`U[V%a
Hello, world! {$D[l
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<..或者..> fB^h2
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// 不带换行 2%|
? "Hello, world!" `roos<F1D
d: D`rpcC
// 或者 6.
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n%'M?o]DF
// 带换行 $pW6a %7
?? 'Hello, world!' c%1k'Q
.> Ku;|Dz/=o
DUH\/<^g
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OCaml ]xGo[:k|E
let main () = F6>K FU8
print_endline "Hello world!";; 8vQGpIa,
p7 s#j
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Pascal +m?;,JGt
program Hello; 48%-lkol)
begin V{!fag
writeln('Hello, world!'); WM y97*L<
end. 590.mCm
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Perl
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#!/usr/local/bin/perl Xae0xs
print "Hello, world!\n"; ]5(T{
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PHP 'XW[uK]w)
<?php j@chSk"K
print("Hello, world!"); 3k YVk
?> #+VH]7]
Q1ox<-
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Pike yH`4sd
#!/usr/local/bin/pike 7JC^+rk
int main() QuF76&)7
{ 'K|Jg.2
write("Hello, world!\n"); XOOWrK7O
return 0; |X}H&wBWo
} xg:r5Z/|)
m7~<z>5$
G,jv Mb`+
PL/I /5x~3~
Test: procedure options(main); 5,Q3#f~!
declare My_String char(20) varying initialize('Hello, world!'); n jfh4}g:
put skip list(My_String); Z.Otci> J
end Test; d]3c44kkK{
z<3{.e\e
"M-zBBY ]
Prolog &Zzd6[G+
goal mQbpv'N
write("hello,world!"). `Kt]i5[ "
q\r@x-&g+
1!P\x=Nn_
Python GX\6J]x=^2
#!/usr/local/bin/python <{Pr(U*7}
print "Hello, world!" [zw0'-h.
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f$|AU-|<
REXX
a^5.gfzA
say "Hello, world!" g7-*WN<