“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。 NwdA@"YQ|
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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》。 }$ Am;%?p
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以下是用不同语言写成的Hello World程序的几个例子: 217KJ~)'
Ada $h-5PwHp
with Ada.Text_Io; use Ada.Text_Io; -)tu$W*
procedure Hello is r='"X#CmV/
begin dviL5Eaj
Put_Line ("Hello, world!"); pU*dE
end Hello; ,]'?Gd
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汇编语言 ;?i(WV}ee
wKCHG/W
x86 CPU,DOS,TASM y$At$i>u
MODEL SMALL DT@6Q.
IDEAL \@4_l?M
STACK 100H #is:6Z,OEU
8uX1('+T*
DATASEG .sA?}H#wb
HW DB 'Hello, world!$' -zd*tujx
@hiwq7[j
CODESEG <;.Zms${@
MOV AX, @data qF(F<$B
MOV DS, AX )BY\c7SG
MOV DX, OFFSET HW J..>ApX
MOV AH, 09H 1TKOvy_
INT 21H
2Ek6YNx
MOV AX, 4C00H XnQo0
R.PW
INT 21H 0f
1Lu)
2
END g@.RfX=
":*PC[)W
;jTP|q?|{
x86 CPU,GNU/Linux,NASM hp}J_/+4n
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). B8_w3;x
;Enter this into "hello.asm" then type: 5[M?O4mi
;"nasm -f elf hello.asm" Ak$ghb
;"ld hello.o -o hello" 1@kPl[`p'
;"./hello" jl=<Q.Mm7
!c\d(u
section .data ;data section declaration )>Oip
msg db 'Hello World!',0AH +'?p $@d
len equ $-msg ;string length K^k1]!W=
Gv}*Tw$
section .text ;code section declaration Pt?]JJxl-
global _start ;entry point (start of execution) DEaO=p|
_start: mov edx,len ;string length *lg1iP{]
mov ecx,msg ;string start Zg|z\VR
mov ebx,1 ;file handle: stdout Z^>[{|lIA
mov eax,4 ;sys_write m u(HNj
int 80h ;kernel system call %lchz/
W 0Q-&4
mov ebx,0 ;return value X|H%jdta
mov eax,1 ;sys_exit su(y*187A
int 80h ;kernel system call 0iW]#O/
&eT)c<yhyK
'N],d&fu^^
x86 CPU,Windows,MASM32 Uq&ne1
.386 bh?Vufd%)
.model flat,stdcall uYS?# g
option casemap:none \@Gyl_6^
;Include 文件定义 UHz*Tfjb
include windows.inc .
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include user32.inc #JGy2Hk$^
includelib user32.lib +}X?+Epm
include kernel32.inc r+0"1\f3
includelib kernel32.lib rB}UFS)
;数据段 [syuoJ
.data 0b=OK0n!%
szCaption db 'A MessageBox!',0 3Qe:d_
szText db 'Hello,world!',0 _Q/D%7[pa
;代码段 (^Xp\dyZL
.code kqSCKY1
start: {!xPq%
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK &~U8S^os
invoke ExitProcess,NULL 4-=> >#
P
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> \w^iSK-
end start t-lWvxXe
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Vf*!m~]Vqi
AWK y%=\E
BEGIN { print "Hello, world!" } +M
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Fm{Ri=X<:
52tIe|KwL
BASIC R3Eh47
传统版BASIC(例如GWBASIC): 5SK{^hw
?};}#%971
10 PRINT "Hello, world!" X}_}`wIn
20 END (80]xLEBL
31wact^
或在提示符输入: =+97VO(w]G
B @UaaWh
?"Hello, world!":END 'rRo2oTN
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现代版BASIC(例如Quick BASIC): G!oq
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Print "Hello, world!" n<kcK
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以下的语句在Quick BASIC中同样有效: 42:\1B#[
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? "Hello,world!" B>t$Z5Q^X
<[?oP[ j
9C$b^wHd
BCPL d37l/I
GET "LIBHDR" T%KZV/
%]>c4"H
LET START () BE T^aEx.`O}`
$( +XJj:%yt
WRITES ("Hello, world!*N") KB7CO:
$) 9<WMM)
f/?#
1
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Befunge -f z
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"!dlrow olleH">v I_'S|L
, }-)2CEj3L%
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A"\kdxC
4t|g G`QW7
Brainfuck b3MgJT"mN
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< LS Na
+++++++++++++++.>.+++.------.--------.>+.>. Y1H8+a5@
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22`W*e@6h
C gT'c`3Gkz
#include <stdio.h> f3|ttUX
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int main(void) -$?xR]( f
{ $f*N
printf("Hello, world!\n"); ln'7kg
return 0; &'N{v@Oi)
} d%81}4f:
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C++ ['sj'3cW-
#include <iostream> iT%aAVs
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int main() hkJ4,.
{ 3@J0-w
std::cout << "Hello, world!" << std::endl; 1@P/h#_Vr
return 0; k)b}"' I
} c#$B;?
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C++/CLI _jR%o1Y}
int main() dfiA- h
{ h$DFp
System::Console::WriteLine("Hello, world!"); OlK3xdg7
} ~+A?!f;-J
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^L+*}4Dr
C# (C Sharp) b>hNkVI
class HelloWorldApp dZIAotHN:
{ H`njKKdR
public static void Main() :mXc|W3
{ ~_QZiuq&
System.Console.WriteLine("Hello, world!"); UQaLhKv:
} ~urIA/
} 2 #kR1rJP
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COBOL '+?AaR&p?
IDENTIFICATION DIVISION. ,fpu@@2
PROGRAM-ID. HELLO-WORLD. e ,/I}W
5:Pp62
ENVIRONMENT DIVISION. <h4"^9hL
$]%;u: Sa
DATA DIVISION. 4vT!xn
8s/gjEwA
PROCEDURE DIVISION. >E|@3g
+2
DISPLAY "Hello, world!". GRB/N1=
STOP RUN. `$ZX]6G
h
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^&zwO7cS
Common Lisp M")J buI
(format t "Hello world!~%") @ H=
d8$
am{f<v,EI
oN)l/"%C7/
DOS批处理 =SB#rCH
@echo off h8Q+fHDYv
echo "Hello, world!" S 3Tp__
8V >j-C
.mn`/4
Eiffel 53J!iNnXT6
class HELLO_WORLD WW{5[;LYiB
o%i^t4J$e
creation PBbJfm
make -$f~V\M
feature X|q&0W=
make is rIH/<@+
local 'C8VD+p
io:BASIC_IO [mn@/qf
do AqB5B5}
!!io WjW+EF8(
io.put_string("%N Hello, world!") 0^az<!!O#
end -- make :'91qA%Wr
end -- class HELLO_WORLD D*6v.`]X
mcy\nAf5%
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-
Erlang +>/ariRr
-module(hello). KtchKpv
-export([hello_world/0]). =dx!R ,Bw
_Db=I3.HJ
hello_world() -> io:fwrite("Hello, World!\n"). vH%AXzIA
<vJPKQ`=:
btHN
Forth seC]=UJh#>
." Hello, world!" CR Umjt~K^Z
0vuL(W8)
RbzSQr>a\
Fortran I|9(*tq)
WRITE(*,10) G#gUd'=M
10 FORMAT('Hello, World!') lYmqFd~p
STOP (4cWq!ax<$
END @X4Ur+d
a
yn6k=F
V>ML-s9
HTML '9c`[^
<HTML> GL[#XB>n
<HEAD> 4z#{nZG
<TITLE> Hello World! </TITLE> NdGIH/Y;M
</HEAD> p4Cw#)BaS
<BODY> ig<Eyr
<p>Hello World!</p> [zl@7X1{_
</BODY> _8P"/(
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</HTML> JQ=i{ 9iJ
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<f.* =/]W2
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H o(w!x!["
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INTERCAL BZejqDr*
PLEASE DO ,1 <- #13 x|U~?
DO ,1 SUB #1 <- #238 F-[zuYGp
DO ,1 SUB #2 <- #112 SF$7WG3Q
DO ,1 SUB #3 <- #112 >$SP2(Y~
DO ,1 SUB #4 <- #0 &[:MTK?x!
DO ,1 SUB #5 <- #64 ma9q?H#X
DO ,1 SUB #6 <- #238 [ -"o5!0<
DO ,1 SUB #7 <- #26 (MhC83|?
DO ,1 SUB #8 <- #248 &IsQgS7R
DO ,1 SUB #9 <- #168 =M'M/vKD
DO ,1 SUB #10 <- #24 nwswy]e8/
DO ,1 SUB #11 <- #16 +^ a9i5
DO ,1 SUB #12 <- #158 =+5z;3
DO ,1 SUB #13 <- #52
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PLEASE READ OUT ,1 QA>(}u\+
PLEASE GIVE UP #<0Yx9Jh.
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oJa6)+b(3
Java YL-/z4g
public class Hello _Z?{&k
{ w}No ^.I*4
public static void main(String[] args) 6(awO2{BP
{ N`XJA-DE
System.out.println("Hello, world!"); 56gpAc
} g?`g+:nug
} .w2QiJ
Go~bQ2*'(/
;, P-2\V/
JSP arJ4^ d
<% :W]?6=
out.print("Hello, world!"); aEU[k>&
%> ]@X5'r"
#:C;VAAp
ASmMj;>UM
MIXAL <"A|Xv'Q
TERM EQU 19 the MIX console device number ~f=~tN)hZ
ORIG 1000 start address jJFWPD]u
START OUT MSG(TERM) output data at address MSG <i{O\K]9
HLT halt execution ah<1&UG,
MSG ALF "MIXAL"
o&uO ]
ALF " HELL" I@Zd<