“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。 BSd.7W;cS=
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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》。 P()W\+",n
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以下是用不同语言写成的Hello World程序的几个例子: hDUU_.q)D
Ada Y|hd!C-x
with Ada.Text_Io; use Ada.Text_Io; ks%;_~b
procedure Hello is p^ROt'eQ<
begin !~'D;Jh
Put_Line ("Hello, world!"); 5{1=BZftZ
end Hello; Zn)o@'{}{
-}oH],C
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汇编语言 .Sa=VC?EZ
0Db=/sJ>
x86 CPU,DOS,TASM HEa7!h[a'
MODEL SMALL gCkR$.-E
IDEAL &%/T4$'+Y+
STACK 100H Q\xDAOEL
G
OG[^T
DATASEG 3bo
[34
HW DB 'Hello, world!$' jll|y0
;KmrBNF
CODESEG 8$iHd
MOV AX, @data |{ZdAr.;
MOV DS, AX x*TJYST
MOV DX, OFFSET HW k_?OEkgUh
MOV AH, 09H | lzcyz
INT 21H a[}?!G-Wt|
MOV AX, 4C00H +`B^D
INT 21H En&gI`3n
END eBmHb\
RK$(
pTTM(Hrx
x86 CPU,GNU/Linux,NASM $X\2h+ Os
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). zO$r
;Enter this into "hello.asm" then type: 'T7 3V
;"nasm -f elf hello.asm" oGg<s3;UND
;"ld hello.o -o hello" jMS>B)'TO
;"./hello" x6Gl|e[jv
i$6a0'@U
section .data ;data section declaration P&tw!B
msg db 'Hello World!',0AH *a{WJbau]
len equ $-msg ;string length /!p}H'jl
f;,*P,K
section .text ;code section declaration 0blbf@XA
global _start ;entry point (start of execution) [fvjvN`
_start: mov edx,len ;string length r5(efTgAd+
mov ecx,msg ;string start s+&0Z3+
mov ebx,1 ;file handle: stdout sP%b?6
mov eax,4 ;sys_write TA:#K
int 80h ;kernel system call -3b_}by
j:2F97
mov ebx,0 ;return value >/%XP_q%`e
mov eax,1 ;sys_exit }rs>B,=*k
int 80h ;kernel system call RVs=s}|>*
psz0q|
:+
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x86 CPU,Windows,MASM32 $ZB`4!JxG
.386 W* v3B.
.model flat,stdcall A>FWvlLw'm
option casemap:none N
Mx:Jh-YN
;Include 文件定义 Y!Io @{f
include windows.inc m$pRA0s2`
include user32.inc [!uVo>Q4
includelib user32.lib ^1_[UG
include kernel32.inc AqaMi
includelib kernel32.lib d(b~s2\i
;数据段 U+E9l?4R
.data n3-VqYUP
szCaption db 'A MessageBox!',0 1O,8=,K2a
szText db 'Hello,world!',0 S>j.i
;代码段 R)isWw4
.code 6P,uy;PJ
start: N:+d=G`x
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK `YMd0*
invoke ExitProcess,NULL SdnO#J}{
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BD^1V(
I/
end start 2vsV:LS.
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9 v8^uPA
AWK ,LmP >Q.
BEGIN { print "Hello, world!" } ~0?B
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BASIC /J&DYxl":
传统版BASIC(例如GWBASIC): [9MbNJt 8~
3Z#WAhfS:
10 PRINT "Hello, world!" ?*7Mn`
20 END -g|ji.
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或在提示符输入: KU]o=\ak%
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?"Hello, world!":END ?gjx7TQ?
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现代版BASIC(例如Quick BASIC): '4Qsl~[Eh
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Print "Hello, world!" )%n$_N n
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以下的语句在Quick BASIC中同样有效: difX7)\
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? "Hello,world!" g+<[1;[-
r}D#(G$
Jo~fri([%Q
BCPL 0!$y]Gr
GET "LIBHDR" 3 5L0CM
iy]?j$B$
LET START () BE ]H\tz@
&
$( uaU2D-ft"
WRITES ("Hello, world!*N") >V]9<*c
$) ,j.bdlI#
jcBZ#|B7;
3hUP>F8
Befunge VRD^> Gi
"!dlrow olleH">v MHye!T6fO\
, 2\gIjXX"
^_@ ?N!kYTR%}
~#}T|
b`=g#B|
Brainfuck 6qT-
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< rK:cUW0]X
+++++++++++++++.>.+++.------.--------.>+.>. y=EVpd
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DL!%Np?`
C 2' ^7G@%
#include <stdio.h> /4+(e I7
g]`YI5
int main(void) wEJzLFCn
{ v=cQ`nou
printf("Hello, world!\n"); 3T4HX|rC
return 0; WY!4^<|w"
} f#w
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1KBGML-K3
S9r+Nsn
C++ v_WQ<G?
#include <iostream> U/|JAg#
D>HbJCG4^
int main() $&KkZ
{ |d*a~T0
std::cout << "Hello, world!" << std::endl; lmD[Cn
return 0; n9`]}bnX
} G43r85LO
aJA( UN45
R<{Vgy
C++/CLI ;z N1Qb
int main() +{I" e,Nk
{ %%>nM'4<
System::Console::WriteLine("Hello, world!"); $AE5n>ZD$
} b(Tvc
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C# (C Sharp) e"NP]_vh,
class HelloWorldApp #Nco|v
{ C"_ Roir?
public static void Main() h0g?=hJq
{ ~dp f1fP
System.Console.WriteLine("Hello, world!"); Qx8(w"k*
} CS(2bj^6D
} p:W]
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COBOL 18Z1F
IDENTIFICATION DIVISION. }*xjO/Ey
PROGRAM-ID. HELLO-WORLD. "d0=uHd5\
?# _{h
ENVIRONMENT DIVISION. pi/0~ke4"
!jSgpIp
DATA DIVISION. ()O&O+R|)
\]5I atli
PROCEDURE DIVISION. /sT?p=[.
DISPLAY "Hello, world!". ctLNzJes%
STOP RUN. f% )9!qeW
[Z#Sj=z
5\#I4\
Common Lisp >0<n%V#s:r
(format t "Hello world!~%") 5Pn.c!
%DXBl:!Y`
A8Fe@$<#8
DOS批处理 Vdd
@echo off HK~SD:d
echo "Hello, world!" W{tZX^|
u;c
WIRG
i$PO#}
Eiffel =W:=}ODD
class HELLO_WORLD ?6`B;_m
kROIVO1|`
creation mTxqcQc:7
make N!3Tg564j
feature z8JW iRn
make is F@f4-NR>
local -D'XxOI
io:BASIC_IO Bdb}4X rL
do iRlZWgj4^
!!io ~"SQwE|
io.put_string("%N Hello, world!") 09jE7g @X}
end -- make LR>s2zu-
end -- class HELLO_WORLD !U m9ceK
s hH2/.>
js5VgP`
Erlang tkr&Fs"t+
-module(hello). /o 'lGvw
-export([hello_world/0]). y#iz$lX R
f5Gn!xF
hello_world() -> io:fwrite("Hello, World!\n"). xUsL{24
% ym};7'&b
*K;)~@n
Forth :=ek~s.UV
." Hello, world!" CR 51Y%"v t
2HN*j~>i~
Bps%>P~.
Fortran 'g,h
WRITE(*,10) ^4^N} 7>5
10 FORMAT('Hello, World!') BOG.[?yx
STOP _avf%OS
END |.0~'
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pa+'0Y]71
HTML -kMw[Y
<HTML> 1*dN. v:5
<HEAD> c:7F
2+p
<TITLE> Hello World! </TITLE> 2*z~'i
</HEAD> uMZ~[Sz
<BODY> <%S)6cw(3
<p>Hello World!</p> 3J
&Ros
</BODY> dVEs^ZtI
</HTML> eDZ8F^0
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C:5-h(#
HQ9+ Fw\Z[nh
H ckA\{v
iKJqMES
i:0v6d
INTERCAL {eaR,d~X
PLEASE DO ,1 <- #13 k!0O[U
DO ,1 SUB #1 <- #238 g}D)MlXRq
DO ,1 SUB #2 <- #112 nco.j:
DO ,1 SUB #3 <- #112 hoqZb<:
DO ,1 SUB #4 <- #0 `HXv_9
DO ,1 SUB #5 <- #64 zH}3J}
DO ,1 SUB #6 <- #238 5buW\_G)
DO ,1 SUB #7 <- #26 yef\Y3X
DO ,1 SUB #8 <- #248 U,EoCAm>
DO ,1 SUB #9 <- #168 2RX]~}
DO ,1 SUB #10 <- #24 b^h_`
DO ,1 SUB #11 <- #16 a- rR`
DO ,1 SUB #12 <- #158 @`4T6eL5
DO ,1 SUB #13 <- #52 ^WO3,
PLEASE READ OUT ,1 {jB>]7
PLEASE GIVE UP e,e(t7c?d
'QT~o-U
kWZY+jyt P
Java W{"sB:E
public class Hello ?I[8rzBWU
{ lTMY|{9
public static void main(String[] args) s"`~Xnf
{ m.m6.
System.out.println("Hello, world!"); :&vX0
Ce:
} ?IHt T3'Rt
} uv/\1N;V3
jj2iF/
Intuda7e1
JSP b},2A'X
<% G^k'sgy.
out.print("Hello, world!"); 5+M,X kg
%> `5?0yXK
L?d?O
}h45j84)
MIXAL <WZ{<'ajI
TERM EQU 19 the MIX console device number ?Te#lp;`~
ORIG 1000 start address 8Re[]bE
START OUT MSG(TERM) output data at address MSG /GO-
HLT halt execution F%|P#CaB
MSG ALF "MIXAL" W-s 6+DY
ALF " HELL" N<rq}^qo
ALF "O WOR" cj>UxU][eS
ALF "LD " 7s?#y=M
END START end of the program 7! >0
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Nuva &S{r;N5u
<..直接输出..>
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Hello, world! FprdP*/
]{6/6jl
<..或者..> 6~%><C
?;CIS$$r
<. R QQ'Wg
// 不带换行 D#&9zR86F
? "Hello, world!" LVB wWlJ
spfW)v/T!
// 或者 D wJ^ W&*
mBErU6?X,A
// 带换行 vYV!8o.I
?? 'Hello, world!' BrE#.g Jq
.> paIjXaU1Mb
o(SPT?ao~
ih0a#PB8
OCaml >k\pSV[
let main () = @\ y{q;
print_endline "Hello world!";; O]PM L`
uMw6b=/U
Q&]|W
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Pascal w/*G!o-<
program Hello; toPbFU'
begin 7?whxi Qs
writeln('Hello, world!'); -4Hb]#*2
end. Q0R05*
Fa>f'VXx
q*
R}yt5
Perl x8@ 4lxj
#!/usr/local/bin/perl + kKanm[!v
print "Hello, world!\n"; n\((#<&
v@%4i~N
~x,_A>a
PHP }?,?2U,8:
<?php %JE>Z]
print("Hello, world!"); xkDK5&V
?> $~b6H]"9
i`gM> q&
<4Gy~?
Pike Nf )YG!
#!/usr/local/bin/pike v=@y7P1
int main() r5~W/eE
{ @bA5uY!
write("Hello, world!\n"); $@'BB=i
return 0; X3}eq|r9
} cOV9g)7^O
M)oKtiav*
'd$RNqe
PL/I ts,r,{
Test: procedure options(main); */M`KPW
declare My_String char(20) varying initialize('Hello, world!'); B%6cgm,
put skip list(My_String); Kz42AC
end Test; z='%NZY
1GK.:s6.f
/X_L>or
Prolog #Q!Xz2z2
goal m:h6J''<Z*
write("hello,world!"). o+Jnn"8
\+V"JIStUj
nv_v FK
Python !4a fU:
#!/usr/local/bin/python csW\Q][
print "Hello, world!" 9s"st\u
4
Z>`\$1CI
N~=I))i
REXX y-3'qq'E
say "Hello, world!" ^ 4<