“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。 v0VQ4>
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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》。 ^lt2,x
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以下是用不同语言写成的Hello World程序的几个例子: x"g)pGsT
Ada V?1[R
with Ada.Text_Io; use Ada.Text_Io; =yz"xWH
procedure Hello is #:+F
begin 1Y*k"[?dW
Put_Line ("Hello, world!"); 57EX#:a
end Hello; Le:C8^
tcT=a@
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汇编语言 r{^43g?
_dRB=bl"O
x86 CPU,DOS,TASM VnVBA-#r|
MODEL SMALL ^3BPOK[*gB
IDEAL Jx~H4y=z
STACK 100H .|^Gde
l)*(UZ"
DATASEG |Q%P4S"B?
HW DB 'Hello, world!$' l cHf\~
ZnRT$ l O
CODESEG
*Z^`H!&
MOV AX, @data 5{oc
MOV DS, AX }oA>0Nw$K
MOV DX, OFFSET HW JRw,${W
MOV AH, 09H KILX?Pt[7
INT 21H !p).3Kx0
MOV AX, 4C00H eG1V:%3
INT 21H `WN80d\)&
END nH&z4-1Y?
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2H}y1bkW
x86 CPU,GNU/Linux,NASM Vj 9X6u}{
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). z4Zm%
;Enter this into "hello.asm" then type: %jy$4qAf%
;"nasm -f elf hello.asm" ^h$*7u"^y
;"ld hello.o -o hello" ]t~.?)Ad+2
;"./hello" SMD*9&,
[U/h'A.j
section .data ;data section declaration v:/\;2
msg db 'Hello World!',0AH NI#]#yM+
len equ $-msg ;string length Fz';H
"A"YgD#t
section .text ;code section declaration Qy0w'L/@
global _start ;entry point (start of execution) bf0,3~G,P
_start: mov edx,len ;string length F5RL+rU(h
mov ecx,msg ;string start T>'O[=UWh
mov ebx,1 ;file handle: stdout ,wes*
mov eax,4 ;sys_write ^n0;Q$\
int 80h ;kernel system call <O
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Rlk3AWl2u
mov ebx,0 ;return value V%s7*`U
mov eax,1 ;sys_exit )f|`mM4DW!
int 80h ;kernel system call +1YEOOfVY
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Lo1ySLo$G
x86 CPU,Windows,MASM32 MGsQF #6]
.386 05R"/r*
.model flat,stdcall OU/}cu
option casemap:none Lm~<BBp.
;Include 文件定义 ;7qIm83
include windows.inc :>{!%-1Z
include user32.inc H^*AaA9-
includelib user32.lib A6]X
aF
include kernel32.inc m..ajYSQ
includelib kernel32.lib &{.IUg
;数据段 nH?6o#]N
.data \hgd&H0UU
szCaption db 'A MessageBox!',0 P0}{xq'k9v
szText db 'Hello,world!',0 9>w~B|/
;代码段 3\@2!:>
.code &Y?t
start: olv?$]
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK iW(LD1~7
invoke ExitProcess,NULL rL1yq|]I
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> HvG %##
end start u_$4xNmQ
@6yc^DAA
;6P>S4`w
AWK ?iP7Ki
BEGIN { print "Hello, world!" } Pgr2S I
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BASIC Q}@t'
传统版BASIC(例如GWBASIC): kZz'&xdv'.
{WrEe7dLy
10 PRINT "Hello, world!" [w'Q9\,p
20 END |-}.Y(y
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或在提示符输入: &M}X$k I
5OI.Ka
?"Hello, world!":END ]6^<VC`5D
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现代版BASIC(例如Quick BASIC): sQ#e 2
hz4?ku
Print "Hello, world!" n8<?<-2
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以下的语句在Quick BASIC中同样有效: j+gxn_E
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? "Hello,world!" ]##aAh-P4&
hU""YP~y
9KU&M"Yq&i
BCPL #
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GET "LIBHDR" ^qR|lA@=\
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LET START () BE H KrENk
$( "iK=
8
WRITES ("Hello, world!*N") q-<DYVG+
$) 6P{^j
Jx.fDVJ
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Befunge Mqd'XU0L
"!dlrow olleH">v I@KM2KMN
, jG[Vp b
^_@ 6/8K2_UeoW
(NvjX})eh
T"z<D+pN
Brainfuck Jr!BDg
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< tdH[e0x B
+++++++++++++++.>.+++.------.--------.>+.>. gPKf8{#%e
r&
a[?
=%7drBo D
C nXRa_M(z8
#include <stdio.h> |X8?B=
k)n
b<JW|r
int main(void) v]V N'Hs?
{ k\ #;
printf("Hello, world!\n"); RJWO h
return 0; w1)TnGT
} 2L](4Q[M
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C++ 9S|sTf
#include <iostream> \ZLi Y
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int main()
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{ !Ap5Uwd
std::cout << "Hello, world!" << std::endl; xx`YBn~"
return 0; P?h1nxm`'
} GGuU(sL*
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Gw<D'b)!
C++/CLI AabQ)23R2
int main() =PRQ3/?5
{ ,-AF8BP
System::Console::WriteLine("Hello, world!"); Czjb.c:a.Y
} L\2"1%8Wj
H[~ D]RG}'
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C# (C Sharp) d&NnpjH}c
class HelloWorldApp ynIC (t
{ Q ]CMm2L^f
public static void Main() @njNP^'Kx
{ "u^Erj# /
System.Console.WriteLine("Hello, world!"); Nu"v
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} $NVVurXa
} YcobK#c
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d{7ZO#E
COBOL "] V\ Y!
IDENTIFICATION DIVISION. A2 +%
PROGRAM-ID. HELLO-WORLD. l}uZxKuYx
oK\zyNK
ENVIRONMENT DIVISION. hU$o^ICH
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DATA DIVISION. g5nJ0=9
+LRKS
PROCEDURE DIVISION. be8T<F
DISPLAY "Hello, world!". 0/su`
STOP RUN. yI:
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' 4FH9J
z}MxMx
c4h
Common Lisp M1/d7d
(format t "Hello world!~%") OeqKKVuQ
B5z'Tq1
?sk>Mzr
DOS批处理 f`hZb
@echo off =VD],R)
echo "Hello, world!" >_2~uF@pb
n&:ohOH%
qk<jvha
Eiffel bSsg`
class HELLO_WORLD "&2 F
R0RxcBtG
creation ]<^2B?}
make <r#FI8P;X
feature _2jL]mB
make is PB@IPnB-
local VgNB^w
io:BASIC_IO L/ 7AGR|;C
do @ual+=L
!!io yu'-'{%
io.put_string("%N Hello, world!") 4Im>2)
end -- make R&Lqaek&W
end -- class HELLO_WORLD
mWv$eR
E]mm^i`|
9-pt}U
Erlang C<D$Y,[w
-module(hello). o`iA&
-export([hello_world/0]). l5T[6C
@}4aF|
hello_world() -> io:fwrite("Hello, World!\n"). P2'N4?2
(mIjG)4t
p]mN)
Forth {mJ'
Lb0;
." Hello, world!" CR r:bJU1P1$s
qofAA!3z
Z5vdH5?!r
Fortran vxmX5.
WRITE(*,10) -0^]:
10 FORMAT('Hello, World!') tDRR 3=9pX
STOP ]6e(-v!U
END Jc#D4e1#
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G!6b
)4L-
HTML 5sT3|yq
<HTML> to?! qxn
<HEAD> 1sHjM%
<TITLE> Hello World! </TITLE> mXz*Gi
</HEAD> `6~0W5
<BODY> :K6JrS
<p>Hello World!</p> *a Z1 4
</BODY> 76 !LMNf
</HTML> :i<*~0r<
zP,r,ok7
4k225~GQ:C
HQ9+ D./{f8
H GeP={lj
O^cC+@l!4
qnp}#BZ
INTERCAL n<C]
6H
PLEASE DO ,1 <- #13 <L]Gk]k_R
DO ,1 SUB #1 <- #238 ?0; 2ct
DO ,1 SUB #2 <- #112 TaRPMKk
DO ,1 SUB #3 <- #112 Z[nHo'
DO ,1 SUB #4 <- #0 p}QDX*/sSu
DO ,1 SUB #5 <- #64
WwB_L.{
DO ,1 SUB #6 <- #238 [OCjYC`
DO ,1 SUB #7 <- #26 e{E\YEc
DO ,1 SUB #8 <- #248 2fTuIS<yr
DO ,1 SUB #9 <- #168 dL$ iTSfz"
DO ,1 SUB #10 <- #24 blQ&QQL
DO ,1 SUB #11 <- #16 i%FC
lMF
DO ,1 SUB #12 <- #158 MDF_Xr-hZ
DO ,1 SUB #13 <- #52 O(/~cQ
PLEASE READ OUT ,1 }&vD(hX
PLEASE GIVE UP yP{ 52%|+
!Aj}sh{
>Hnm.?-AWl
Java V[(fE=cIN~
public class Hello 'W(u.
{ xq((]5P y
public static void main(String[] args) jC'h54,Mr
{ ]AYP\\Xi
System.out.println("Hello, world!"); M G$+Blw>
} U
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3 T
} RB %+|@c
v Z9OJrF
WK6,K92
JSP -zFJ)!/?
<% 6Hnez @d
out.print("Hello, world!"); Dz0D ^(;V
%> _8.TPB]no
\8xSfe
-yf8
MIXAL _
dAyw
TERM EQU 19 the MIX console device number $BdwKk
!k
ORIG 1000 start address uA#K59E+
START OUT MSG(TERM) output data at address MSG [\W&
HLT halt execution 4H6Fq*W{k
MSG ALF "MIXAL" M[`[+5v
ALF " HELL" A&M_ J
ALF "O WOR" _3aE]\O[
ALF "LD " A1prYD
END START end of the program s6~;)(r
}? _KZ)
SZW_V6\t>
Nuva VNTbjn]
<..直接输出..> v7"VH90`!
Hello, world! 56)!&MF
+E</A:|}S
<..或者..> x[58C +
nz3*s#k\-
<. ~s+vJvWz
// 不带换行 G Y%5N= u
? "Hello, world!" v^ ^Ibv
bW=q G
// 或者 i9L]h69r
4z(~)#'^
// 带换行 b1?^9c#0d
?? 'Hello, world!' ?(gha
.> T#qf&Q Z
,Wd=!if
@MOQk
OCaml *F1TZ_GS
let main () = \}Am]Y/ w
print_endline "Hello world!";; OWibmX
ms0V1`
}*(_JR4G
Pascal @4y?XL(n
program Hello; 4MPy}yT*
begin *>a=ku:?
writeln('Hello, world!'); C$[iduS
end. $0 .6No_|
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u:APGR^
Perl 08xo_Oysq
#!/usr/local/bin/perl ?XY'<