“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。 sRi %1r7
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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》。 A\g%
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以下是用不同语言写成的Hello World程序的几个例子: A;t
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Ada qb$_xIQpDL
with Ada.Text_Io; use Ada.Text_Io; uN(b.5y
procedure Hello is u\w 2S4c
begin #S*pD?VZ
Put_Line ("Hello, world!"); aH^{Vv$]M@
end Hello;
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汇编语言 WVkG2
ITQ9(W
Un
x86 CPU,DOS,TASM I4ctxMVP
MODEL SMALL V^vLN[8_\
IDEAL ex0oAt^
STACK 100H *k[kV
' 3VqkQ4
DATASEG ;%!tf{Si
HW DB 'Hello, world!$' ##2`5i-x
>F|qb*Tm7
CODESEG &/DOO ^
MOV AX, @data )O -cw7 >
MOV DS, AX DA=qeVBg
MOV DX, OFFSET HW uDI}R]8~
MOV AH, 09H
,| <jjq)
INT 21H zM\IKo_"
MOV AX, 4C00H H.9yT\f.
INT 21H ~K%k
0kT
END 9PCa*,
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x86 CPU,GNU/Linux,NASM <B=[hk!
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). _ flgQ
;Enter this into "hello.asm" then type: =kF?_K N
;"nasm -f elf hello.asm" i#tbdx#
;"ld hello.o -o hello" +`9yZOaC#
;"./hello" |[DV\23{G
'#KA+?@
section .data ;data section declaration InP[yFV-z
msg db 'Hello World!',0AH )FV6,
len equ $-msg ;string length yW{mK
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section .text ;code section declaration G~`'E&/
global _start ;entry point (start of execution) 2*Va9HP!q
_start: mov edx,len ;string length A3<^ U
mov ecx,msg ;string start gh'kUZG
a
mov ebx,1 ;file handle: stdout (;C$gnr.C
mov eax,4 ;sys_write 98h :X %
int 80h ;kernel system call Lp!0H `L
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mov ebx,0 ;return value ,cPkx~w0
mov eax,1 ;sys_exit i]LU4y%'
int 80h ;kernel system call Lblet
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x86 CPU,Windows,MASM32 FoQ?U=er
.386 O(WEgz
.model flat,stdcall "OVi /:*B
option casemap:none D8gQRQ
;Include 文件定义 ;,mBT[_ZO
include windows.inc Bl=nj.g
include user32.inc AL(n*,
includelib user32.lib <=$rU232}
include kernel32.inc YGfA qI
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includelib kernel32.lib D7EXqo
;数据段 !NILpimi
.data !p-'t]
szCaption db 'A MessageBox!',0 wEZ,49
szText db 'Hello,world!',0 qK{|Q
;代码段 5<!o{)I
.code A>4l/
start: >F,$;y52
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK dko [
invoke ExitProcess,NULL 9cl{hdP{
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> X77A; US
end start [t {vYo
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Lr K9F^c
AWK yBr$ 0$
BEGIN { print "Hello, world!" } (qNco8QKu3
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BASIC ~l;yr
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传统版BASIC(例如GWBASIC): ;%v%K+}r
H?rSP0.
10 PRINT "Hello, world!" eUX@9eML
20 END Q,OkO?uY
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或在提示符输入: ;+S2h-4
'=KuJ0`nE9
?"Hello, world!":END (k7;
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现代版BASIC(例如Quick BASIC): c2tEz&=G
zyIza @V(
Print "Hello, world!" Bq~AU#
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以下的语句在Quick BASIC中同样有效: \DG(
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? "Hello,world!" n,CD4Nv
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^G]KE8
BCPL F2Nb5WT
GET "LIBHDR" z'5;f;
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LET START () BE BsoFQw4$9
$( @t{{Q1
WRITES ("Hello, world!*N") 'US:Mr3
$) `XQx$I
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Befunge yb@X*PW/z
"!dlrow olleH">v ~$ cm9>
, 5Ws:Ei{R
^_@ d +*T@k]>M
; Xnk+
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Brainfuck xEd#~`Jmr
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< e#76h;
+++++++++++++++.>.+++.------.--------.>+.>. Zq2H9^![y~
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C C9"f6>i
#include <stdio.h> qiwQUm{
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int main(void) ~|$) 1
{ Rx_,J%0Fq
printf("Hello, world!\n"); "9MX,}X*
return 0; M8^ziZY
} zD#+[XI]K
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C++ $w2[5|^S
#include <iostream> X:zyzEhS
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int main() ^qSf
{ _S%OX_UMn^
std::cout << "Hello, world!" << std::endl; 9v5.4a}
return 0; !'6J;Fb#
} gvwCoCbb
A-@-?AR
Ed ?Yk* 4
C++/CLI 52q!zx E
int main() 2yVGEp^
{ <try%p|f
System::Console::WriteLine("Hello, world!"); ;r2b@x:<_
} s]V{}bY`
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C# (C Sharp) c+\Gd}IJq
class HelloWorldApp * Kp ^al
{ ,M9hb<:m
public static void Main() 37<GG)
{ })yb
System.Console.WriteLine("Hello, world!"); CsQ}P)
} u0$5Fd&X
} #f jX|b
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COBOL 07HX5 Hd
IDENTIFICATION DIVISION. *^&iw$Qx3
PROGRAM-ID. HELLO-WORLD. $(<*pU
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ENVIRONMENT DIVISION. m<VL19o>R
ROI$;B(
DATA DIVISION. RAXJsF^5o
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PROCEDURE DIVISION. 0^tJX1L
DISPLAY "Hello, world!". gs2&0rnOy\
STOP RUN. C J}4V!;|
BM}a?nnoc
G#=b6DB
Common Lisp /(}l[jf
(format t "Hello world!~%") N'1 [t
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DOS批处理 hrtN.4p[
@echo off ^gVbVz[17
echo "Hello, world!" DyV[+P
,HjHt\!~<
TuT=
Eiffel s?gXp{O?X
class HELLO_WORLD m~\m"zJ4
cVt$#A)
creation [+5SEr}
make jq]\oY8y
feature Ql!6I (
make is l[OQo|_
local Lw78v@dY
io:BASIC_IO S&g-
do 6(RqR
!!io E9NGdp&-Ah
io.put_string("%N Hello, world!") 3_['[}
end -- make 1F%*k &R
end -- class HELLO_WORLD wz2)seZY
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Erlang D_`)T;<Sp
-module(hello). "B{xC}Tw
-export([hello_world/0]). *xX0]{49q
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hello_world() -> io:fwrite("Hello, World!\n"). 4rCqN.J
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5nlyb,"^g
Forth AHg4kG
." Hello, world!" CR EwJn1Mvq
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TEy.zzt
Fortran A&|(%
WRITE(*,10) o]k]pNO
10 FORMAT('Hello, World!') Kwmo)|7uPU
STOP 9n2%7dLQ*
END jfhDi6N
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HTML =cX"gI[
<HTML> d3hTz@JY
<HEAD> LGue=Hkp
<TITLE> Hello World! </TITLE> E8V\J
</HEAD> '
=s*DL`0
<BODY> K":tr~V;
<p>Hello World!</p> ~]s"PV:|
</BODY> F973U
</HTML> X_yU"U
=*G'.D /*
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H 6aK2{-+
eyp\h8!u_
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INTERCAL jtJ8r5j 1
PLEASE DO ,1 <- #13 xVo)!83+Q
DO ,1 SUB #1 <- #238 /1@m#ZxA:
DO ,1 SUB #2 <- #112 \r&@3a.>
DO ,1 SUB #3 <- #112 (9lx5
DO ,1 SUB #4 <- #0 FK('E3PG
DO ,1 SUB #5 <- #64 t|,Ex 7
DO ,1 SUB #6 <- #238 Q(Y,p`>
DO ,1 SUB #7 <- #26 VZ!$'??
DO ,1 SUB #8 <- #248 tOVm~C,R
DO ,1 SUB #9 <- #168 BFRSYwPr
DO ,1 SUB #10 <- #24
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DO ,1 SUB #11 <- #16 Q";eyYdOL
DO ,1 SUB #12 <- #158 /Q-!><riD
DO ,1 SUB #13 <- #52 )8;'fE[p}
PLEASE READ OUT ,1 Vq\6c
PLEASE GIVE UP 6x 0>E^~
4.8,&{w<m
F3q5!1
Java %}/)_RzQ
public class Hello A.[T#ZB.4
{ dn Xc- <
public static void main(String[] args) t%)L8%Jr
{ I ;_.tG
System.out.println("Hello, world!"); 4[?Q*f!
} {R K#W~h
} 2rxdRg'YLQ
04s N4C
)~6974
JSP cMj<k8.{
<% M`(xAVl
out.print("Hello, world!"); Xe5J
%> {PU[MHZF
}V 1sY^C
1g;3MSn~
MIXAL 1||e!W
TERM EQU 19 the MIX console device number >,DR{A2hSB
ORIG 1000 start address 4AGc2e'u
START OUT MSG(TERM) output data at address MSG 8)i\d`
HLT halt execution m>iuy:ti
MSG ALF "MIXAL" vjHbg#0 %
ALF " HELL" F?UL0Q|u v
ALF "O WOR" 5+U~ZW0|+
ALF "LD " !54%}x)3
END START end of the program k=LY 6
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D!:Qy@Zw
Nuva <Sz9: hg-
<..直接输出..> toF@@%
Hello, world! B$\5=[U
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<..或者..> l!oU9
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<. 7|{QAv
// 不带换行 ZI8p(e
? "Hello, world!" ddw!FH2W
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// 或者 \\[P^ tsF
FCg,p2
// 带换行 [\I\).
?? 'Hello, world!' Lg'z%pi
.> d~.#K S
b+{yF
RlpW)\{j?
OCaml l!GAMK 6o
let main () = I+}h+[W
print_endline "Hello world!";; GLEGyT?~
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