“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。 IRdt:B|@
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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》。 hbjAxioA
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以下是用不同语言写成的Hello World程序的几个例子: #;!&8iH
Ada 'sNZFB#
with Ada.Text_Io; use Ada.Text_Io; W&z jb>0b0
procedure Hello is )Q)qz$h@
begin BFLef3~.0
Put_Line ("Hello, world!"); 8;PkuJR_]
end Hello; yNTd_XPL
DE?v'7cmA
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汇编语言 R>Ra~b
9KSi-2?H
x86 CPU,DOS,TASM _IH" SVub
MODEL SMALL g 7oY 1;
IDEAL
%H{p&ms
STACK 100H '<Z[e`/
^0VL](bD>
DATASEG ?KT{H(rU
HW DB 'Hello, world!$' E?m~DYnU
q76POytV|
CODESEG 'CLZ7pV
MOV AX, @data i`,FXF)
MOV DS, AX ;C]Ufk
MOV DX, OFFSET HW ^?z%f_ri
MOV AH, 09H 8hRcB[F~S
INT 21H 1MelHW
MOV AX, 4C00H f60w%
INT 21H b@:OlZ~%
END c]=2>ov)hR
^aFm6HS1
9I/b$$?D
x86 CPU,GNU/Linux,NASM yMs!6c*
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). S0$^|/Sr
;Enter this into "hello.asm" then type: Sb.8d]DW
;"nasm -f elf hello.asm" :t?B)
;"ld hello.o -o hello" =:W2NN'
;"./hello" sFU< PgV
=TB_|`5;j
section .data ;data section declaration [^H2'&]
msg db 'Hello World!',0AH xn8KOwX%
len equ $-msg ;string length F_-Lu]*
j!;LN)s@?
section .text ;code section declaration 3f;=#|l
global _start ;entry point (start of execution) <,d550GSm
_start: mov edx,len ;string length 37AVk`a
mov ecx,msg ;string start 7]{g^g.9-
mov ebx,1 ;file handle: stdout 9+.wj/75
mov eax,4 ;sys_write nhI+xqfn
int 80h ;kernel system call %E?Srs}j
>A#5` $i
mov ebx,0 ;return value MDMd$]CW
mov eax,1 ;sys_exit Lx"GBEkt7
int 80h ;kernel system call q*!R4yE; C
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%1z;l. c
x86 CPU,Windows,MASM32 MqmQ52HR
.386 Z:4/lx7Bq
.model flat,stdcall ,GbmL8P7Y
option casemap:none b UG,~\Z
;Include 文件定义 0RR |!zEu
include windows.inc |OQ]F
include user32.inc 8f@}-
includelib user32.lib T^bAO-d#
include kernel32.inc rb?7i&-
includelib kernel32.lib fv+]iK<{
;数据段 -Cf)`/
.data 7*:zN
szCaption db 'A MessageBox!',0 FaHOutP
szText db 'Hello,world!',0 =~^b
;代码段 =?sG~
.code /\J0)V
start: PN*
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invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK )ycI.[C
invoke ExitProcess,NULL -H|
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;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> {gMe<y
end start D:P(;
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AWK RQ+, 7Ir
BEGIN { print "Hello, world!" } j#HXuV6
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BASIC .#EU@Hc
传统版BASIC(例如GWBASIC): \S}/2]* 1
<z Gh}.6v
10 PRINT "Hello, world!" R >x d*A
20 END Y;'<u\^M"
A U~DbU0O
或在提示符输入: (
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\"P{8<h.3
?"Hello, world!":END [6GYYu\
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现代版BASIC(例如Quick BASIC): %9-^,og
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Print "Hello, world!" fk*(8@u>
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以下的语句在Quick BASIC中同样有效: !Ko2yn}6l
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? "Hello,world!" qs4jUm
)f?I{
!gh8 Qs
BCPL i_qY=*a?y
GET "LIBHDR" \w9}O2lL
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LET START () BE /t5)&
$( J[/WBVFDf
WRITES ("Hello, world!*N") ax@H^Gj@2
$) z} fpV T
>oh Cz@~
41
F;X{Br
Befunge y
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"!dlrow olleH">v .?}M(mL
, x&B&lFmo8
^_@ }#z1>y!#
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dx%z9[8~{.
Brainfuck 3%v)!dTa<^
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< *l5?_tF
+++++++++++++++.>.+++.------.--------.>+.>. #W\}v(Ke
8Vu@awz{L
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C 2D 4,#X
#include <stdio.h> ch
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int main(void) -()WTdIy
{ c~0kZA6
printf("Hello, world!\n"); m*^)#
return 0; zt.kNb
} 7# AIX],
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H'AN osv
C++ Ft5A(P >
#include <iostream> Emlj,c<?j
*)m:u :
int main() GRZz@bAO?$
{ \ `Hp/D1
std::cout << "Hello, world!" << std::endl; sn"((BsO<
return 0; Ny^ 1#R
} O|Uz)Y94
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*-0s
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C++/CLI
<':h/d
int main() }`R,C~-|^
{ }:8}i;#M
System::Console::WriteLine("Hello, world!"); U>tR :)
} ]4aPn
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%
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C# (C Sharp) -K|1w'E
class HelloWorldApp MQ,K%_m8
{ IQ&PPC
public static void Main() eV7;#w<]
{ Vr2A7kq
System.Console.WriteLine("Hello, world!"); a4:GGzt
} 0ix(1`Z
} n;Bb/Z!~
tN#C.M7.'7
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COBOL vQ rxx
IDENTIFICATION DIVISION. FJ_JaIby
PROGRAM-ID. HELLO-WORLD. V?XQjH1X
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ENVIRONMENT DIVISION. 3.W[]zH/u
@CNJpQ ujn
DATA DIVISION. sx?IIFF
-
2)k!5X=
PROCEDURE DIVISION. PUQ",;&y1
DISPLAY "Hello, world!". <]Td7-n
STOP RUN. !MoAga_
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7@@g|l]
Common Lisp m6R/,
(format t "Hello world!~%") ?/|Xie
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@=kgK[t
9
DOS批处理 ky2]%cw
@echo off ~'M<S=W
echo "Hello, world!" 21TR_0g&<
8AR8u!;8
4t*%(
Eiffel (xgw';g
class HELLO_WORLD ?]><#[?'L
x3n9|Uud
creation "B'c;0@q
make >zJHvb)b\
feature OIKx:&uIk
make is r+#{\~r7T
local x2v0cR"KL
io:BASIC_IO y[N0P0r l:
do E#!N8fQ
!!io kN=&"
io.put_string("%N Hello, world!") c64^u9
end -- make @)>Z+g
end -- class HELLO_WORLD l'I:0a
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)j;^3LiV3
Erlang L:HvrB~
-module(hello). B[8bkFS>]
-export([hello_world/0]). s{b\\$Rb
q7 PCMe
hello_world() -> io:fwrite("Hello, World!\n"). ^N7H~CT"
k;\gYb%L
*)K\&h<{
Forth .wNXvnWr
." Hello, world!" CR pU_3Z3CeE
`cp\UH@
+b 6R
Fortran 9a*#r;R
WRITE(*,10) ^kfqw0!
10 FORMAT('Hello, World!') :k\#=u(
STOP ULiRuN0 6
END `D ;*.zrA
j(%N.f6
evZcoH3~
HTML 4Y(@
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<HTML> iC3z5_g*@
<HEAD> &tH?m;V
<TITLE> Hello World! </TITLE> +/[M
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</HEAD> Qvp"gut)%X
<BODY> s4bV0k
<p>Hello World!</p> ~,/@]6S&Y
</BODY> ?tYZ/
</HTML> :)1"yo\
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HQ9+ =}Tm8b0
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ng
vM/*S
6[
y,5qY}P+
INTERCAL wPg/.N9H
PLEASE DO ,1 <- #13 k[@P526
DO ,1 SUB #1 <- #238 ]k!Xb
DO ,1 SUB #2 <- #112 jn^X{R\
DO ,1 SUB #3 <- #112 JP4DV=}L
DO ,1 SUB #4 <- #0 AW5iwq6p
DO ,1 SUB #5 <- #64 ~5,^CTAM
DO ,1 SUB #6 <- #238 MZGhN
brd
DO ,1 SUB #7 <- #26 3}nk9S:jr
DO ,1 SUB #8 <- #248 0O"W0s"T#
DO ,1 SUB #9 <- #168 DFMpU.BN W
DO ,1 SUB #10 <- #24 *73gp
DO ,1 SUB #11 <- #16 lp}S'^ y
DO ,1 SUB #12 <- #158 f3O6&1D
DO ,1 SUB #13 <- #52 _v&fIo
PLEASE READ OUT ,1 LO=U?`)q
PLEASE GIVE UP ZA="Dac
8e?/LA%MU
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Java 6U{A6hH]
public class Hello 2j+w5KvU
{ C@XS
public static void main(String[] args) 9[/0
{ k|-\[Yl .
System.out.println("Hello, world!"); s70Z&3A
} wsmgkg
} +Kk1[fh-
4<Vi`X7[F
M
FIb-*wT
JSP 9w-\K]
<% *s4|'KS2o
out.print("Hello, world!"); 2u$-(JfoS
%> ,)`_?^\$f
%}@iz(*}>
vh\i ^
MIXAL Ic(qA{SM
TERM EQU 19 the MIX console device number e \Qys<2r
ORIG 1000 start address !@& 3q|
START OUT MSG(TERM) output data at address MSG FW-I|kK.
HLT halt execution J];Sj
MSG ALF "MIXAL" akvi^]x
ALF " HELL" -+E.I*st
ALF "O WOR" EL~$7 J
ALF "LD " IWE([<i}i[
END START end of the program mI8EeMa{
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( eKgc
Nuva aMI;;iL^
<..直接输出..> +RJ{)Nec
Hello, world! 0%bCP/
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<..或者..> l>\EkUT
^$ Y9.IH"
<. [-\ Y?3
// 不带换行 +0Q
? "Hello, world!" :^y!z1\2(7
lgews"
// 或者 Q:q0C
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kgo#JY-4
// 带换行 dBI-y6R
?? 'Hello, world!' Y|R=^
=d\
.> LtRRX@qJw
m%L!eR
/MtmO$.
OCaml 3l=q@72
let main () = Wx0i_HFR
print_endline "Hello world!";; <)ZQRE@
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<ww D*t
Pascal D=ej%]@iw
program Hello; Mqr]e#"o
begin O}"oz3H
writeln('Hello, world!'); yx8G9SO?
end. PMP{|yEx"
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Perl *}vvS^ c0
#!/usr/local/bin/perl o"JHB
print "Hello, world!\n"; /[TOy2/;%b
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s*GZOz
PHP \kQ)fk]^
<?php xCZ_x$bk
print("Hello, world!"); P|Aac,nE+^
?> [#GBn0BG)
3uYLA4[-B
=G}a%)?As\
Pike &6\&McmkX
#!/usr/local/bin/pike yu6~:$%H
int main() I<QUvs%e
{ v:SHaUS
write("Hello, world!\n"); Q+1ot,R
return 0; 8fqabR
} wKpGJ&
{
.OJGo<#$f
0se%|Z|8
PL/I F/2cQ.u2
Test: procedure options(main); q]{gAGe~
declare My_String char(20) varying initialize('Hello, world!'); <~mqb=qA$
put skip list(My_String); @_`r*Tb)dM
end Test; "[ LUv5
A}Iyl
<lB2Nv-,
Prolog <qR$ `mLN
goal !IOmJpl'
write("hello,world!"). 6Y2,fW8i,
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pJR
L9/'zhiZBx
Python %ZoJu
#!/usr/local/bin/python "22./vWV|i
print "Hello, world!" mRx `G(u:v
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