“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。 Sl3KpZ
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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》。 0U82f1ei
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以下是用不同语言写成的Hello World程序的几个例子: 1~}m.ER
Ada yZYKwKG
with Ada.Text_Io; use Ada.Text_Io; PsU9R#HL1
procedure Hello is R K"&l!o
begin UL86-R!
Put_Line ("Hello, world!"); L5"8G,I
end Hello; '[Mlmgc5
#yW.o'S+
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汇编语言 EY+/.=$x
XR*Q|4
x86 CPU,DOS,TASM QS3U)ZO$@
MODEL SMALL ]43al f F#
IDEAL uYFMv=>j
STACK 100H %1Bn_
[Q4_WKI0T
DATASEG wYZT D*A2h
HW DB 'Hello, world!$' C=fsJ=a5;
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-&%
CODESEG ipG5l
MOV AX, @data x|]\1sb"
MOV DS, AX iM:yX=>a
MOV DX, OFFSET HW \Sg<='/{L;
MOV AH, 09H q=|R89
INT 21H H@V 7!d
MOV AX, 4C00H s K+
(v
INT 21H *_`76`cz%X
END &^V~cJ
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x86 CPU,GNU/Linux,NASM yJ%t^ X_
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). <&4nOt
;Enter this into "hello.asm" then type: 9|'
|BC
;"nasm -f elf hello.asm" >;
aCf#q
;"ld hello.o -o hello" |#{- .r6Y]
;"./hello" {jvOHu
:6XguU
section .data ;data section declaration ac9qj
msg db 'Hello World!',0AH v @:~mwy
len equ $-msg ;string length kr%2 w
XC=%H'p
section .text ;code section declaration Y[2Wt%2\6
global _start ;entry point (start of execution) )h#]iGVN}
_start: mov edx,len ;string length Bd{4Ae\_+g
mov ecx,msg ;string start ]1m"V;vZ
mov ebx,1 ;file handle: stdout ).LTts7c
mov eax,4 ;sys_write fX_#S|DlSG
int 80h ;kernel system call !)N|J$FU
dd]?9
mov ebx,0 ;return value {jjSJIV1
mov eax,1 ;sys_exit MhNFW'_
int 80h ;kernel system call j`O7=-
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h;-a`@rO ;
x86 CPU,Windows,MASM32 /D<"wF }@J
.386 _5mc('
.model flat,stdcall f\fdg].!
option casemap:none |'tW=
;Include 文件定义 @5WgqB
include windows.inc r!7 Y'|
include user32.inc "< v\M85&
includelib user32.lib ['z!{Ez
include kernel32.inc n|Pr/ddL
includelib kernel32.lib ?>af'o:
;数据段 &-M]xo^
.data f|U0s
szCaption db 'A MessageBox!',0 p~K9
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szText db 'Hello,world!',0 6R`Oh uN.>
;代码段 Zmf'{t T5
.code $$hv`HE^l
start: Ur^j$B}
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK @9Q2$
invoke ExitProcess,NULL 'B_\TU0
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;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> qos`!=g?
end start 1~J5uB 4
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AWK ZU^IH9
BEGIN { print "Hello, world!" } 2edBQYWd
MM?`voj~`p
Y>BP?l
BASIC m
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传统版BASIC(例如GWBASIC): 'Hw4j:pS
nBN&.+3t
10 PRINT "Hello, world!" @wp4 |G
20 END AVG>_$<
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或在提示符输入:
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*XbI#L%>
?"Hello, world!":END w(j^ccPD
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现代版BASIC(例如Quick BASIC): 'xnnLCm.
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Print "Hello, world!" `Gd$:qV
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以下的语句在Quick BASIC中同样有效: ]u#JuX
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? "Hello,world!" |%1?3Mpn
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>xu[q\:"
BCPL ]"F5;p;y
GET "LIBHDR" /qU>5;
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LET START () BE ~9=aT1S|
$( 5l DFp9
WRITES ("Hello, world!*N") ]XeO0Y
$) x0Yse:RE^
S[,8TErz
|.P/:e9
Befunge Fl3#D7K
"!dlrow olleH">v 4 o(bxs"
,
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-?6MU~"GK
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Brainfuck U47}QDh
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 4v'A\~ZU
+++++++++++++++.>.+++.------.--------.>+.>. la
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^j )BKD-
C '9?;"=6(
#include <stdio.h> tNIlzR-
s%pfkoOY%
int main(void) %."@Q$lA
{ @kFu*"
printf("Hello, world!\n"); 1tMQqI`N
return 0; !k&Q 5s:
} 1l8Etp&<
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C++ [xb]Wf
#include <iostream> fP HLXg5s
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int main() %7hB&[ 5
{ c+dg_*^
std::cout << "Hello, world!" << std::endl; RthT\%R
return 0; WO</Mw
} a j\nrD1
=~KsS}`1,
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C++/CLI zsXoBD\h
int main() J#2!ZQE
3
{ ? 1*m,;Z
System::Console::WriteLine("Hello, world!"); N#C1-*[C
} ww k
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C# (C Sharp) sJ
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class HelloWorldApp LjB;;&VCn
{ ,TJD$^
public static void Main() ;z~n.0'
{ nqVZqX@oE
System.Console.WriteLine("Hello, world!"); ~z5R{;Nbz|
} 8>WVodv
} fV:4#j
cbYLU\!
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COBOL 4Kwh?8.
IDENTIFICATION DIVISION. 7OCwG~_^
PROGRAM-ID. HELLO-WORLD. ;Xvp6.:
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ENVIRONMENT DIVISION. Q7X3X,
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DATA DIVISION. @4$\
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)~6zYJ2
PROCEDURE DIVISION. k>jbcSY(z<
DISPLAY "Hello, world!". W5L iXM
STOP RUN. $_H`
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dsx]/49<
Common Lisp KInk^`C/H
(format t "Hello world!~%") y! .J
jjM\. KL]
OS|> t./U
DOS批处理 YW@#91.
@echo off hw N?/5
echo "Hello, world!" 9[c%J*r
6r:?;j~l
vIl+#9L0
Eiffel ^ci3F<?Q=
class HELLO_WORLD 1?*
5}$b0<em~
creation !\8 ;d8
make VQ5nq'{v
feature 73#x|lY
make is [YrHA~=U
local 0$+fkDf
io:BASIC_IO z@Q@^
&0Mr
do G$0c'9d*(
!!io #GDe08rOw
io.put_string("%N Hello, world!") @yXfBML?]
end -- make Z+j\a5d?,
end -- class HELLO_WORLD r;L>.wl*I
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iy.2A!f^.
Erlang I+>%uShm
-module(hello). Ofm%:}LV
-export([hello_world/0]). AcI,N~~
VvFC -r,=G
hello_world() -> io:fwrite("Hello, World!\n"). ")O`mXg-
kF;DBN
HHX-1+L
Forth >>aq,pH
." Hello, world!" CR N>(g?A;
Z+
:ISMPe3'
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Fortran X|0R=n]
WRITE(*,10) \<}&&SuH
10 FORMAT('Hello, World!') f7h*Vu`>
STOP ydw)mT44K
END >9RD_QG7
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'XY`(3q
HTML YEkh3FrbwH
<HTML> .<tquswg
<HEAD> V-n&oCS+f
<TITLE> Hello World! </TITLE> &B!
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</HEAD> +w@M~?>
<BODY> ~%?`P/.o
<p>Hello World!</p> ]EwVpvTw
</BODY> r]3'74j:
</HTML> ?bM_q_5
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!T](Udf
[,2|Flf
e
INTERCAL bAKiq}xG%i
PLEASE DO ,1 <- #13 3^s/bm$g
DO ,1 SUB #1 <- #238 .h0b~nI>>
DO ,1 SUB #2 <- #112 &>e-(4Xu
DO ,1 SUB #3 <- #112 nhIa175'
DO ,1 SUB #4 <- #0 !mWiYpbU+
DO ,1 SUB #5 <- #64 yG Wnod'
DO ,1 SUB #6 <- #238 pv^O"Bs
DO ,1 SUB #7 <- #26 hx/N1x
DO ,1 SUB #8 <- #248 "4vy lHIo
DO ,1 SUB #9 <- #168 Z|%_oR~b|
DO ,1 SUB #10 <- #24 z]b>VpW:
DO ,1 SUB #11 <- #16 |t; ~:A
DO ,1 SUB #12 <- #158 *tm0R> ?!
DO ,1 SUB #13 <- #52 []a[v%PkG
PLEASE READ OUT ,1 v1a6?-
PLEASE GIVE UP asY[8r?U
\(t@1]&jw
0b4R
Java %Y!Yvw^&P(
public class Hello ^v.,y3
{ lA>DS#_
public static void main(String[] args) Us+pc^A
{ J'N!Omz
System.out.println("Hello, world!"); `--TP
} LM&y@"wfm
} F(t=!k,4\
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A:7k+4
JSP dt2$`X18
<% PJ='tJDj
out.print("Hello, world!"); BD`2l!d
%> WVY\&|)$
S"Zp D.XX
pp7$J2s+j
MIXAL ^pJ!isuqu
TERM EQU 19 the MIX console device number `7/Y@}n
ORIG 1000 start address 5|jw^s7
START OUT MSG(TERM) output data at address MSG #v<QbA
HLT halt execution MwmUgN"g
MSG ALF "MIXAL" 6252N]*
ALF " HELL" f4L`.~b'hb
ALF "O WOR"
B<C*
ALF "LD " P(t[
eXe
END START end of the program K_K5'2dE
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ew"v{=X
Nuva =0;^(/1Mc
<..直接输出..> v@e~k-#
Hello, world! gUeuUj
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<..或者..> 7O,U?p
!9xp cQ>
<. 6;|n]m\Vd
// 不带换行 u%.$BD Hg
? "Hello, world!" @:KJYm[
,_"AT!r
// 或者 UKM2AZ0lb
JA)] _H
P
// 带换行 JwJ7=P=c
?? 'Hello, world!' }d<}FJ-,
.> ve\X3"p#
1UKg=A-q
C`5
OCaml OK\A</8r
let main () = $z+8<?YD
print_endline "Hello world!";; b, :QT~g=
`F/Tv 5@L
f%V4pzOc"
Pascal |Pg@M
program Hello; 92^w8Z.
begin -YsLd 9^4
writeln('Hello, world!'); e^O(e
end. kYLM&&h
8>7&E-
"_`F\DGAZu
Perl S{Er?0wm.R
#!/usr/local/bin/perl A]XZnQ
print "Hello, world!\n"; qG<$Ajiin
&gjF4~W]
T8^5=/
PHP 23h%
< ,
<?php 7U"[Gf
print("Hello, world!"); ZcaX'5}!S
?> :sCqjz
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