“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。 ~@I@} n
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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》。 1M%S
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以下是用不同语言写成的Hello World程序的几个例子: W^g[L:s
Ada w,.qCp T$_
with Ada.Text_Io; use Ada.Text_Io; ySdN;d:q
procedure Hello is N:+
taz-
begin fW0$s`
Put_Line ("Hello, world!"); wpPn}[a
end Hello; 83]PA<R
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qFRdg V>8
汇编语言 96|[}:+$&:
Q]JX`HgPaU
x86 CPU,DOS,TASM &hZwZgV+3
MODEL SMALL B(HT.%r^A
IDEAL p5]_}I`+2
STACK 100H BQgoVnQo_c
{_ V0
DATASEG "/x_>ui1F
HW DB 'Hello, world!$' whc[@Tyx
~o15#Pfn/
CODESEG T|'&K:[TJ
MOV AX, @data l\q}
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MOV DS, AX (wt+`_6
MOV DX, OFFSET HW k{Lv37H
MOV AH, 09H Wr|G:(kw\!
INT 21H W=-|`
MOV AX, 4C00H y62%26 [
INT 21H KS>$`ax,
END 2z2`
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J=WB6zi
x86 CPU,GNU/Linux,NASM setLdEi
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). o$_93<zc
;Enter this into "hello.asm" then type: [ x>
;"nasm -f elf hello.asm" z?.(3oLT
;"ld hello.o -o hello" ^)\+l%M
;"./hello" P2k7M(I_&
CJw$j`k
section .data ;data section declaration L`K;IV%;
msg db 'Hello World!',0AH a5wDm
len equ $-msg ;string length M'jXve(=yF
Q</h-skLZ
section .text ;code section declaration E8[XG2ye
global _start ;entry point (start of execution) tEhr
_start: mov edx,len ;string length OeTu?d&N
mov ecx,msg ;string start ()|3
mov ebx,1 ;file handle: stdout !L\'Mk/=A
mov eax,4 ;sys_write r+gjc?Ol
int 80h ;kernel system call VWvoQf^+
SPwPCI1?
mov ebx,0 ;return value }C~]=Z
mov eax,1 ;sys_exit fD6GQ*
int 80h ;kernel system call emWGIo
q.oLmX
.H;B=nd*
x86 CPU,Windows,MASM32 @phN|;?
.386 pieT'mA
.model flat,stdcall E <@\>y.[
option casemap:none .hz2&9Ow
;Include 文件定义 h[U7!aM
include windows.inc QrS$P09=\
include user32.inc __)qw#
includelib user32.lib F'BdQk3o
include kernel32.inc CIQwl 6H9
includelib kernel32.lib sJ6a7A8)
;数据段 {e9Y
!oFg
.data @l>Xnqx)
szCaption db 'A MessageBox!',0 8R/
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szText db 'Hello,world!',0 7*'@qjTos
;代码段 rWr/ p^~
.code vgk9b!Xd
start: 8eX8IR!K9
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 05)|"EX)
invoke ExitProcess,NULL e[4V%h
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BED@?:U# h
end start +qE']yzm!
Bcaw~WD
bF6gBM@*
AWK AN10U;p/O
BEGIN { print "Hello, world!" } Mo|yv[(K,
uC[d% v`
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BASIC 0M\NS$u(Y
传统版BASIC(例如GWBASIC): 3H'*?|Y(#
FfXZ|o$;
10 PRINT "Hello, world!" K -E`y
20 END DB8s
1f;or_f#k?
或在提示符输入: 41'EA\V
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?"Hello, world!":END )*HjRTF6G
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现代版BASIC(例如Quick BASIC): o*;2mFP
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Print "Hello, world!" =c]a
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以下的语句在Quick BASIC中同样有效: \\s?B K
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? "Hello,world!" <(uTst
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T9y768%
BCPL X7&U3v
GET "LIBHDR" @ RX`> r{_
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LET START () BE *[
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$( ^Y<M~K972
WRITES ("Hello, world!*N") ?%;B`2 nDR
$) L5C2ng>
<i7agEdZD
` U#Po_hq
Befunge TK %<a/
"!dlrow olleH">v %^U"Spv;
, "uS7PplyO
^_@ I4ctxMVP
3.~h6r5-
X#7}c5^Y
Brainfuck PvuAg(?
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< *k[kV
+++++++++++++++.>.+++.------.--------.>+.>. 19w_tSg
c.-cpFk^L&
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C bN!u}DnN
#include <stdio.h> \
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int main(void) d/4ubf+$k
{ )^(P@D.L
printf("Hello, world!\n"); 6d};|#}
return 0; j $0zD:ppW
} j`hNZ %a
? KF=W
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C++ ^f6
{0
#include <iostream> H.9yT\f.
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int main() {YBl:rMz
{ 'DeW<Sa~
std::cout << "Hello, world!" << std::endl; a>?p.!BM
return 0; LhZZc`|7t
} -B,c B
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C++/CLI oL)lyUVT
int main() =kF?_K N
{ lh~<s2[R2
System::Console::WriteLine("Hello, world!"); ^+URv
} b.@H1L
F/xCG nP-
pOX$4$VR<
C# (C Sharp) eL_^: -
class HelloWorldApp Jxf}b}^T
{ %B0w~[!4}
public static void Main() |FjBKj
{ s9G)Bd 8
System.Console.WriteLine("Hello, world!"); oFb\TiLu
} &b!vWX1N
} L2<+#O#
Mc!2mE%47m
),MU+*`
COBOL 9n-T5WP
IDENTIFICATION DIVISION. e"lD`*U8R
PROGRAM-ID. HELLO-WORLD. yr%yy+(.k
JR!Q,7S2!N
ENVIRONMENT DIVISION. -ywX5B
"2%y~jrDN
DATA DIVISION. T^d#hl.U
2'|XtSj
PROCEDURE DIVISION. ,YQ=Zk)w
DISPLAY "Hello, world!". $vW^n4!
STOP RUN. 0c`sb+?
fJvr+4i4k
-*r [
Common Lisp HE@-uh
(format t "Hello world!~%") $]nVr(OZ_
avmcGyL
kHGeCJe\{
DOS批处理 O(WEgz
@echo off mn(/E/
echo "Hello, world!" FLK"|*A
?ISI[hoc
"k/;`eAP
Eiffel =!(S<];
class HELLO_WORLD W;q#ZD(;
%N7gT*B:
creation eSJAPU(D
make -<]\l3E&J
feature Av@&hD\
make is gHp'3SnS
local >c}:
io:BASIC_IO q|R+x7x
do ^8b~ZX
!!io ! Zno[R
io.put_string("%N Hello, world!") QjehDwt|
end -- make H]Y#pLu|
end -- class HELLO_WORLD i<'{Y
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Erlang mgk64}K [n
-module(hello). +[>yO _}
-export([hello_world/0]). #8S [z5 `
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hello_world() -> io:fwrite("Hello, World!\n"). X77A; US
jM6uT'Io
bta0?O
#
Forth UEN YJ*tnP
." Hello, world!" CR u4go*#
}~myf\$
<ur KIu
Fortran T_3V/)%@
WRITE(*,10) }P05eI
10 FORMAT('Hello, World!') Fsnw3/Nr
STOP 3s3a>
END 58M'r{8_
I[tAT[ <
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HTML 0Ei\VVK>
<HTML> LBW.*PHW
<HEAD> z~GVvgd
<TITLE> Hello World! </TITLE> e_YW~z=6t
</HEAD> ]R97n|s_
<BODY> J&
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<p>Hello World!</p> \/?
!
6~
</BODY> sZ0g99eX
</HTML> L+v8E/W
xmCm3ekmpC
$ iX^p4v
HQ9+ oc!biE`u
H R
tXF
.q
AQPL
~,(0h:8
INTERCAL 113Z@F
PLEASE DO ,1 <- #13 SIKk|I)
DO ,1 SUB #1 <- #238 \DG(
8l
DO ,1 SUB #2 <- #112 Yt\E/*%
DO ,1 SUB #3 <- #112 YR$tPe
DO ,1 SUB #4 <- #0 .d<~a1k
DO ,1 SUB #5 <- #64 P58\+9d_
DO ,1 SUB #6 <- #238 jrDz7AfA
DO ,1 SUB #7 <- #26 6|B a
DO ,1 SUB #8 <- #248 >qSO,$
DO ,1 SUB #9 <- #168 z'5;f;
DO ,1 SUB #10 <- #24 ^4n2
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DO ,1 SUB #11 <- #16 Ws2prh^e(
DO ,1 SUB #12 <- #158 9OrA9r
DO ,1 SUB #13 <- #52 FE$M[^1_
PLEASE READ OUT ,1 9$B)hrJo
PLEASE GIVE UP -~QlHp&SY
f 3nnXE"
A5 &>!y
Java <) >gg!
public class Hello |[lxV&SD.
{ KUl
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public static void main(String[] args) , V0iMq
{ $ioaunQKP
System.out.println("Hello, world!"); TMnT#ypf<5
} umq$4}T'$
} z{ Zimr
Qs#9X=6e@
?M*C*/R
JSP 6/p]jN
<% |q1b8A \
out.print("Hello, world!"); KDNTnA1c
%> KD[)O7hYC
aufcd57
b;&Yw-\nZ;
MIXAL `Gy>tD.#V-
TERM EQU 19 the MIX console device number XnNOj>!
ORIG 1000 start address Z_eqM4{
START OUT MSG(TERM) output data at address MSG Mt7X<?GZm
HLT halt execution #R"9)vHp
MSG ALF "MIXAL" ]5qjK~,4b
ALF " HELL" brpN>\
ALF "O WOR" [A.eVuV;+
ALF "LD " Rx_,J%0Fq
END START end of the program QjW~6Z.tI
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H4K(SGx
Nuva S[\cT:{OE
<..直接输出..> 8ESkG
Hello, world! _BeX7
gn;nS{A
<..或者..> ,=XS%g}l4
(
SC7m/
<. X:zyzEhS
// 不带换行 /_ hfjCE
? "Hello, world!" g:@Cg.q8
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// 或者 A ydy=sj
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// 带换行 {<Xo,U7y
?? 'Hello, world!' {kY`X[fvZ
.> z~A(IQO
1*eWvYo1
A-@-?AR
OCaml 6832N3=
let main () = u:{.
Hn`
print_endline "Hello world!";;
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.n^O)|Z
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Pascal R, (+NT$
program Hello; ;r2b@x:<_
begin CM@"lV_
writeln('Hello, world!'); 6P/9Vh j'
end. k^vmRe<lk
OM.(g%2
,rvZW}=
Perl MZhJ,km)
#!/usr/local/bin/perl * Kp ^al
print "Hello, world!\n"; <T=o]M$
sVZ}nq{
# 8-P
PHP 6=[ PJM
<?php (t]R#2{
print("Hello, world!"); '
m#Ymp
?> '&o>
%V
ZeDDH
a7 '\*
Pike O.m.]%URW
#!/usr/local/bin/pike k%bTs+]*
int main() iaq:5||,
{ Ug[F3J|Mu
write("Hello, world!\n"); p_kTLNZd9
return 0; 9BgQoK@
} rqG6Ll`=+
7zOvoQ}
dsft=t8s
PL/I
=}1~~
Test: procedure options(main); B1AF4}~5
declare My_String char(20) varying initialize('Hello, world!'); RAXJsF^5o
put skip list(My_String); 'rcsK
end Test; |Y,X=Ed
XQ?)
W1M/Z[h6)5
Prolog KTS7)2ci
goal 4 9+}OIX
write("hello,world!"). c+
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s t 3]Yy
*Sp O|*'
Python :d/:Ga5v!
#!/usr/local/bin/python <i`K%+<WO
print "Hello, world!" #IciNCIrG
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0
REXX 9#A{C!75(y
say "Hello, world!" tZ6v@W
!&<Wc^PG
F^[Rwzv>c
Ruby Ub-k<]yZ
#!/usr/bin/ruby 9R<J$e
print "Hello, world!\n" ,HjHt\!~<
/)HEx&SQmZ
^SES')x
Scheme vN[m5)aT
(display "Hello, world!") @x\gk5
(newline) (4/`@;[
P24
[+5SEr}
sed (需要至少一行输入) l'X?S(fiV
sed -ne '1s/.*/Hello, world!/p' [O =)FiY-
Ql!6I (
eXtF[0f
Smalltalk ~s^6Q#Z9|
Transcript show: 'Hello, world!' fTnyCaB
1</t #r
Zi '8~iEH
SNOBOL P<w>1
=
OUTPUT = "Hello, world!" E9NGdp&-Ah
END ?%TM7Z4
-
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