“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。 <THwl/a
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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》。 o{>4PZ}=g
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以下是用不同语言写成的Hello World程序的几个例子: 5kGQf
Ada je@&|9h
with Ada.Text_Io; use Ada.Text_Io; (a0(ZOKH
procedure Hello is J6[}o4Z
begin 9%
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Put_Line ("Hello, world!"); T ay226
end Hello; zJP jsD]
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HU'w[r6a
汇编语言 $@@ii+W}\
:-O$rm
x86 CPU,DOS,TASM 'j*Q
MODEL SMALL qH0JZdk
IDEAL 3b\s;!
STACK 100H ;e*okYM
c&1_lI,tH
DATASEG (V&8
WN
HW DB 'Hello, world!$' A1F$//a
Dt<MEpbur
CODESEG qSlo)aP
MOV AX, @data YzQ(\._s
MOV DS, AX K>vl o/#!
MOV DX, OFFSET HW L*dGo,oN
MOV AH, 09H @Co6$<
INT 21H $3B%4#s
MOV AX, 4C00H \#JXch
INT 21H %f'=9pit
END gxmo 1
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!@])Ut@tN
x86 CPU,GNU/Linux,NASM 0ETT@/)]z
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). '.<iV!ZdZ
;Enter this into "hello.asm" then type: p7 !y#
;"nasm -f elf hello.asm" X $V_
;"ld hello.o -o hello" G62;p#
;"./hello" >?OUs>}3y2
hxj\
section .data ;data section declaration &"WgO!pzD
msg db 'Hello World!',0AH >]anTF`d
len equ $-msg ;string length :!l.ze{F
$W=)-X\>
section .text ;code section declaration vs$h&o>|
global _start ;entry point (start of execution) qLN\>Z,3;
_start: mov edx,len ;string length h^_^)P+;
mov ecx,msg ;string start y9?*H?f,
mov ebx,1 ;file handle: stdout Go1xyd:k
mov eax,4 ;sys_write R<_VWPlj
int 80h ;kernel system call 2q]ZI
c7{s'ifG
mov ebx,0 ;return value C$K?4$
mov eax,1 ;sys_exit J~xm[^0
int 80h ;kernel system call `q\F C[W
mi$C%~]5m
@I|kY5' c
x86 CPU,Windows,MASM32 4[#)p}V
.386 @67GVPcxl
.model flat,stdcall Y'jgp Vt
option casemap:none 9mp`LT
;Include 文件定义 |=v,^uo
include windows.inc %]Nm'"Y`U
include user32.inc -fV\JJ
includelib user32.lib ;hODzfNkS
include kernel32.inc P`O`MwEAf
includelib kernel32.lib ygV_"=+|N
;数据段 pGD-K41O]
.data v(R^LqE
szCaption db 'A MessageBox!',0 f+ZOE?"
szText db 'Hello,world!',0 JL!^R_b&c
;代码段 \D'mo
.code GFE3p
start: !~RK2d
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK kCEo */,
invoke ExitProcess,NULL _VjaTw8iM
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
#tpz74O
end start @YRy)+
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h#@`
AWK FeS
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BEGIN { print "Hello, world!" } }f_@@#KB?
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ctHQZ#.[(
BASIC o3\^9-jmp
传统版BASIC(例如GWBASIC): f3n^Sw&Q(Q
t5_76'@cX
10 PRINT "Hello, world!" Z
ztp %2c
20 END y${`W94
-hfkF+=U'
或在提示符输入: suIYfjh
o<p4r}*AVJ
?"Hello, world!":END %-fS:~$
p
%.Adxx
现代版BASIC(例如Quick BASIC): g$mMH
*2N0r2t&
Print "Hello, world!" "M+I$*]
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以下的语句在Quick BASIC中同样有效: )(yaX
v!DK.PZbi
? "Hello,world!" )Ghw!m
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(VmFYNt&
BCPL **z^aH?B2
GET "LIBHDR" ~`Vo0Z*S
G;#xcld
LET START () BE DF-PBVfpu
$( T`j{2
WRITES ("Hello, world!*N") 55TFBDc
$) pO fw *lD
Het>G{
6C<GYzzo
Befunge Avyer/{
"!dlrow olleH">v K$GQc"
, a%a0/!U[
^_@ >dgq2ok!u
zsd<0^
p\{
7&HcrkP]
Brainfuck \(=xc2
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< G\5Bdo1g
+++++++++++++++.>.+++.------.--------.>+.>. |;(P+Q4lB
9ghUiBPiL:
A /c
C /E{tNd^S
#include <stdio.h> -Jv3D$f]a
"".a(ZGg
int main(void) pZ[|Q 2(
{ v8'XchJ
printf("Hello, world!\n"); .}eM"Kv
return 0; .waj.9&[l
} R}3th/ qf
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wpC.!T
C++ ki2`gLK
#include <iostream> =zrfh-lwH
@c"s6h&
int main() eHGx00:
{ 5kWzD'!^
std::cout << "Hello, world!" << std::endl; M&q~e@P
return 0; DnhbMxh8o
} @p/"]zf
k#~oagW_Gw
*81/q8Az
C++/CLI sK9RViqF\
int main() *wX[zO+o
{ [AIqKyIr
System::Console::WriteLine("Hello, world!"); y=+OC1k\8
} w8N1-D42
;o;ak.dTt
[euR<i*I#
C# (C Sharp) 9mn~57`y
class HelloWorldApp 1 |)CQ
{ l O*
public static void Main() /B 3\e3
{ l_9Z zN
System.Console.WriteLine("Hello, world!"); =\oW{?
} 9C Ki$L
} ~@QAa (P.
m:~y:.
.X)Wb{7
COBOL 5 A5t
IDENTIFICATION DIVISION. "Y5 :{Kj
PROGRAM-ID. HELLO-WORLD. J{kS4v*J
T%Cj#J&L
ENVIRONMENT DIVISION. z?VjlA(X
YwZx{%f
DATA DIVISION. 4s'%BM-r-
5{i NR4sq
PROCEDURE DIVISION. /[/{m ]
DISPLAY "Hello, world!". =;Co0Q`
STOP RUN. XhWo~zh"
y0?HZ Xq
(|<+yQ,@>
Common Lisp cH:&S=>h
(format t "Hello world!~%") iPG:w+G
'L9hM.+
o@[o6.B<
DOS批处理 #4"eQ*.*"
@echo off r4X\/
echo "Hello, world!" SD8>,
umAO&S.+M
1gt 7My
Eiffel <s|.2~
class HELLO_WORLD xI#rnx*
p15dbr1
creation 2
w!
0$
make *>Bew
feature PQYJnx}
make is HFFrS%
local QuI!`/N)z
io:BASIC_IO |f1^&97=+
do jA~omX2A
!!io SdMLO6-
io.put_string("%N Hello, world!") cH|J
end -- make 7i02M~*uS
end -- class HELLO_WORLD 08k
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&m9= q|;m
Erlang U,fPG/9
-module(hello). vo)W
ziHh
-export([hello_world/0]). >zw@!1{1
hPGDN\#LD
hello_world() -> io:fwrite("Hello, World!\n"). w~pe?j_F$
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e} 7!A
Forth =;)=,+V~q
." Hello, world!" CR :ec>[N~KG
3A~<|<}t
i$hWX4L
Fortran >XRf=
:3
WRITE(*,10) n+<
10 FORMAT('Hello, World!') ,VUOsNN4\
STOP \LQZoD?W
END %Q.M& U
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#SI]^T|
HTML E&Lml?@
<HTML> 60e{]}Z
<HEAD> DR]oK_
<TITLE> Hello World! </TITLE> gQu!(7WLI
</HEAD> X>o*eN
<BODY> >){}nlQf
<p>Hello World!</p> v6! `H
</BODY> 4@mJEi{
</HTML> IkA~+6UY
Al *yx_j
6L
Fhhl^
HQ9+ t%k`)p7O
H =>Qd
v/$<#2|
U%#Vz-r
INTERCAL Z?9G2<i
PLEASE DO ,1 <- #13 \)aFYDq#\
DO ,1 SUB #1 <- #238 3KkJQ5a
DO ,1 SUB #2 <- #112 R `ob;>[Q
DO ,1 SUB #3 <- #112 <Zfh5AM
DO ,1 SUB #4 <- #0 A5 4u}
DO ,1 SUB #5 <- #64 fT?m~W^
DO ,1 SUB #6 <- #238 > hGB
o
DO ,1 SUB #7 <- #26 w_~tY*IwB
DO ,1 SUB #8 <- #248 BV/ ^S.~
DO ,1 SUB #9 <- #168 asy:[r"
DO ,1 SUB #10 <- #24 If 'N0^'W
DO ,1 SUB #11 <- #16 meThjCC
DO ,1 SUB #12 <- #158 Gb"kl.j
DO ,1 SUB #13 <- #52 Y=<zR9f`
PLEASE READ OUT ,1 "Z&_*F.[O
PLEASE GIVE UP [{&OcEf
>>y\idg&:
f/0k,~,*
Java Z$('MQ|Ur
public class Hello qAlX#]
{ 3Y +;8ld
public static void main(String[] args) -sDl[
{ A5%Now;.cf
System.out.println("Hello, world!"); Dd,
&a
} XI`s M~'
} B_8JwMJu3
KRP6b:+4L
P~x4h{~Gd
JSP qM3(OvCt
<% AxO.adQE%
out.print("Hello, world!"); DM\pi9<m
%> ggfCfn
c3<H272\
heb{i5el
MIXAL !V4 (- 8
TERM EQU 19 the MIX console device number 5RY-.c4}
ORIG 1000 start address K 4{[s
z
START OUT MSG(TERM) output data at address MSG 7<2^8`
HLT halt execution Ia{t/IX\[
MSG ALF "MIXAL" ?a?4;Y!
ALF " HELL" Pe11azJ
ALF "O WOR" zpNt[F?~1
ALF "LD " ]'>jw#|h
END START end of the program jsKKg^g
I.SMn,N
$0~1;@`rQ6
Nuva LJ z6)kz
<..直接输出..> N!\1O,
Hello, world! EVLDP\w{
*rV{(%\m
<..或者..> R.GDCGAL
N];K
<. 9Nz}'a;?>
// 不带换行 8`I,KkWg
? "Hello, world!" *W 04$N
DD>n-8M@>
// 或者 .H&XPW
sYk#XNH
// 带换行 k@>(sXs
?? 'Hello, world!' )hVn/*mH
.> ys7Tq+
y^
st
T^
&*Kk>
4
OCaml DoICf1
let main () = [8acan+
2l
print_endline "Hello world!";; d5=&