“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。 y[GqV_~?Y
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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》。 4~2 9,
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以下是用不同语言写成的Hello World程序的几个例子: B_RF)meux
Ada &ViK9
with Ada.Text_Io; use Ada.Text_Io; lHE \Z`
procedure Hello is R0K{wY58
begin \y+^r|IL
Put_Line ("Hello, world!"); ZuKOscVS#T
end Hello; "`h.8=-
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汇编语言 ,[3}t%Da
fP 3t0cp
x86 CPU,DOS,TASM U|aEyMU
MODEL SMALL kIRjoKf <F
IDEAL f`8?]@y{
STACK 100H M|R\[
Zf
3,J{!
DATASEG 2'Raj'2S4
HW DB 'Hello, world!$' n*caP9B
V(Cxd.u
CODESEG |hX\ep
MOV AX, @data :_Iz(
2hV
MOV DS, AX iO$ ?No
MOV DX, OFFSET HW [7 t
MOV AH, 09H Z_>:p^id
INT 21H ->Fsmb+R
MOV AX, 4C00H U&SSc@of
INT 21H !E,|EdIr
END 7/K'nA
w}8=sw
l9n$cv^
x86 CPU,GNU/Linux,NASM 09i77
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Vddod
;Enter this into "hello.asm" then type: 8C*xrg#g:
;"nasm -f elf hello.asm" sXYXBX[
;"ld hello.o -o hello" 5C9
.h:c4y
;"./hello" "]q0|ZdOwH
z? GtC{L9
section .data ;data section declaration uWi pjxS
msg db 'Hello World!',0AH 99n;%W>
len equ $-msg ;string length M0hR]4T
%&J`mq
section .text ;code section declaration #%{
global _start ;entry point (start of execution) _>^Y0C[?5
_start: mov edx,len ;string length BM5)SgK
mov ecx,msg ;string start 9fCU+s
mov ebx,1 ;file handle: stdout ;Mr Q1
mov eax,4 ;sys_write OaY]}4tI$
int 80h ;kernel system call 3h6,x0AG
Jg$ NYs.xZ
mov ebx,0 ;return value TN/&^/
mov eax,1 ;sys_exit /K;A bE
int 80h ;kernel system call -6^Ee?"
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Z=l2Po n
x86 CPU,Windows,MASM32 WGo ryvEx
.386 a(uQGyr[k1
.model flat,stdcall ?OGs+G
option casemap:none aHPx'R
;Include 文件定义 Y5*A,piq
include windows.inc $4kbOqn4
include user32.inc dvglh?7d
includelib user32.lib !:~C/B{
include kernel32.inc '1zC|:,
includelib kernel32.lib }:*?w>=
;数据段 SN`L@/I
.data nO;ox*Bk+8
szCaption db 'A MessageBox!',0 }S%}%1pG7
szText db 'Hello,world!',0 ES#q/yab5
;代码段 Mb97S]878I
.code Ifq|MZ\
start: ;a[3RqmKW
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 1yeD-M"w
invoke ExitProcess,NULL Djf~8q V!
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Z*(OcQ-
end start bNoZ{ 7
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BEGIN { print "Hello, world!" } 5U*${
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BASIC k1LbWR1%wB
传统版BASIC(例如GWBASIC): Rli`]~!w
#t
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10 PRINT "Hello, world!"
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20 END v'Up& /(
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或在提示符输入: <!X]$kvG
V3axwg_
?"Hello, world!":END (D+%*ax
lg@q}
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现代版BASIC(例如Quick BASIC): 5^Lbc.h
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Print "Hello, world!" bf[l4$3k
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以下的语句在Quick BASIC中同样有效: |+=ctpx9&
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? "Hello,world!" rNgAzH
~\zIb/ #
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BCPL zeH=py[n
GET "LIBHDR" W\e!rq
Nt[&rO3s
LET START () BE 2 xi@5;!
$( W#^p%?8pR
WRITES ("Hello, world!*N") ?MiMwVR
$) u7-0?
x
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3>z+3!I z
Befunge D.h <!?E%
"!dlrow olleH">v sB01QVx47
, h5))D!
^_@ +:z%#D
i^/H>E%u
[U{RDX
Brainfuck 'b_SQ2+A
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ^Ux*"\/Es
+++++++++++++++.>.+++.------.--------.>+.>. A^F0}MYT
<a2Kc '
PU\@^)$
C Ki3wqY
#include <stdio.h> O[^zQA
MO79FNH2\
int main(void) v2mqM5Z
{ jF5oc
printf("Hello, world!\n"); ?=?9a
return 0; yF^)H{yx
} opCQ=G1
"C+Fl
/v
,E4qxZC(X
C++ |>nVp:t^
#include <iostream> Zr;(a;QKs
uL@'Hv A
int main() $7\hszjZ
{ iLFhm4.PO
std::cout << "Hello, world!" << std::endl; xCm`g{
return 0; iHyA;'!Os
} qV@H u/;
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`Y7&}/OM
C++/CLI 55`cNZ
int main() }@g#S@o
{ f/=H#'+8
System::Console::WriteLine("Hello, world!"); ;[-y>qU0
} OH~I+=}.
m*TJ@gI*t
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C# (C Sharp) O[&G6+
class HelloWorldApp p2Fi(BW*q
{ q.RW_t~
public static void Main() C6,W7M[c
{ 1Q9eS&
System.Console.WriteLine("Hello, world!"); 79MB_Is]s
} 7ZgFCK,8m,
} z^9df(
$qhVow5~
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COBOL #'kVW{
IDENTIFICATION DIVISION. I*8_5?)g<
PROGRAM-ID. HELLO-WORLD. a~[]Ye@H
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G)=$,
ENVIRONMENT DIVISION. u|E9X[%
5,WDmhJ
DATA DIVISION. m2Q#ATLW
,vUMy&AV
PROCEDURE DIVISION. ed7Hz#Qc
DISPLAY "Hello, world!". qL68/7:A
STOP RUN. N/mC,7Q
-o0~xspF
{-\VX2:;[9
Common Lisp )`]} D[j
(format t "Hello world!~%") }U7><I
8I=migaxP
|;P9S
DOS批处理 ?QCHkhU
@echo off Y<-dd"\
echo "Hello, world!" 0@8EIQxK"
||k^pzj%
4 5\%2un
Eiffel _zj}i1!E"
class HELLO_WORLD LP:C9Ol\
!/MHD
creation m.N/g,
make kculHIa\.
feature pUaGrdGxzQ
make is AZYu/k
local Y>[u(q&09O
io:BASIC_IO H?axlRmw3
do 4]]1JL(Ka
!!io `;!v<@:i2
io.put_string("%N Hello, world!") 9l:Bum)9
end -- make <CUe"WbE)
end -- class HELLO_WORLD #x|h@(y|
NEh5
efF>kcIC
Erlang O486:tF
-module(hello). NbnuQPb'
-export([hello_world/0]). #~^Y2-C#
h $}&N
hello_world() -> io:fwrite("Hello, World!\n"). 9*}?0J8
YkLEK|d
!jxz2Q
Forth {!hA^[}|
." Hello, world!" CR ^g2p!7
#b4Pn`[
!&D&Gs
Fortran wA<#E6^vG
WRITE(*,10) s9Aq-N
10 FORMAT('Hello, World!') YS5 Pt)?
STOP 29E9ZjSK
END Iz\IQa
PO[
AP%;
)0JXUC e
HTML dF%sD|<)
<HTML> RHGs(d7-
<HEAD> 438+zU
<TITLE> Hello World! </TITLE> tA2I_WCl
</HEAD> -\!"Kz/
<BODY> N8|
;X
<p>Hello World!</p> V{[vIt*
</BODY> 3g]Sp/
</HTML> fhAK^@h
L
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rSVU|O3m;
HQ9+ fN TPW]
H I2=?H<
r9@Q="J_)
8L<GAe
INTERCAL zl j%v/9
PLEASE DO ,1 <- #13 cM;&$IjCt
DO ,1 SUB #1 <- #238 ^L(}c O
DO ,1 SUB #2 <- #112 *@r)3
DO ,1 SUB #3 <- #112 5h^U ]Y#
DO ,1 SUB #4 <- #0 `\:92+
DO ,1 SUB #5 <- #64 l1\/ `
DO ,1 SUB #6 <- #238 'o2x7~C@
DO ,1 SUB #7 <- #26 bqxbOQd
DO ,1 SUB #8 <- #248 ^MesP:[2
DO ,1 SUB #9 <- #168 bb6J$NR
DO ,1 SUB #10 <- #24 %<q l
DO ,1 SUB #11 <- #16 gekW&tRie
DO ,1 SUB #12 <- #158 <5Jp2x#
DO ,1 SUB #13 <- #52 0'm4
)\
PLEASE READ OUT ,1
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PLEASE GIVE UP 47xJ(yO
~'e/lX9g-
gNO<`9q
Java 0FFx
public class Hello Oi=>Usd
{ YN
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public static void main(String[] args) 3Q`F x
{ &41=YnC6
System.out.println("Hello, world!"); Brh<6Btl
} b<B|p|
} $*bd})y)I
E+AEV`-
XTD_q
JSP N6Fj}m&E
<% BOLG#}sm
out.print("Hello, world!"); MmBM\Dnv
%> D84`#Xbi
U<**Est
wY2#xD
MIXAL WVp7H
TERM EQU 19 the MIX console device number dIG(7~
ORIG 1000 start address )Aa98Eu?2
START OUT MSG(TERM) output data at address MSG {4g1Wr5=
HLT halt execution fMn7E8.
MSG ALF "MIXAL" zF'{{7o
ALF " HELL" -bK# &o,
ALF "O WOR" h:3`e`J<h
ALF "LD " HPAd@5d(
END START end of the program vIrLG1EK
C
G~)`
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Nuva >8~+[e
<..直接输出..> Lnnl++8Y
Hello, world! `RUr/|S
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<..或者..> "PBUyh-Z
t+k"$zR
<. @ba5iIt
// 不带换行 s%Q
pb{
? "Hello, world!" -Rhxib|<
>+=)Q,|R
// 或者 \eE0Rnaf-
BW}^ n
// 带换行 M=$y_9#
?? 'Hello, world!' +d6/*}ht
.> !ec\8Tj
Pq~"`-h7:
BYN<|=
OCaml 3_2(L"S2
let main () = |,j6cFNw
print_endline "Hello world!";; .!Kdi| a)
h[%`'(
*usfJ-
Pascal P@:#NU[
program Hello; \Nu(+G?e
begin gM20n^
writeln('Hello, world!'); KUVsCmiT
end. dWE[*a\g
"xlf6pm%
uAR!JJ
Perl !mrB+<:
#!/usr/local/bin/perl ~wIVw}
print "Hello, world!\n"; ehI*cf({
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;uNcrv0J
PHP
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<?php 4_J*
0=U
print("Hello, world!"); M ]W'>g)G
?> ;"\e
aKl
0ANqEQX
WEUr;f
Pike |Sy|E
#!/usr/local/bin/pike g>x2[//pk
int main() ZVJbpn<lo)
{ /] ce?PPC
write("Hello, world!\n"); _CPe
return 0; {Q?AIp6u|
} ;VM/Cxgep
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{%@zQ|OO0
PL/I [a\:K2*'
Test: procedure options(main); Lw?4xerLsb
declare My_String char(20) varying initialize('Hello, world!'); )H#Hs<)Qy
put skip list(My_String); ErJi
end Test; ' eO4h^
1agyT
r80w{[S$
Prolog *@lNL=%R
goal M~;mamTP
write("hello,world!"). Ck2O?Ne
uh%%MhTjv
too=+'<N</
Python RyC]4QyC
#!/usr/local/bin/python BV$lMLD{r
print "Hello, world!" gQgG_&xkC
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REXX s"p}>BjMIC
say "Hello, world!" I)V2cOrXM
tS8*l2Y`
=U!'v X d
Ruby V{@<Z8sW#
#!/usr/bin/ruby j/{F#auI
print "Hello, world!\n" {Lb NKjn
eHi|_3A&*
mKtZ@r)u
Scheme >IC.Zt@
(display "Hello, world!") *j2P#et
(newline) S&8gZ~B
+?[TH?2c+
Z,qo
jtw
sed (需要至少一行输入) [ECSJc&i
sed -ne '1s/.*/Hello, world!/p' U2=5Nt5
wt[MzpR P
|[}YM%e
Smalltalk g}@_
@
Transcript show: 'Hello, world!' |!i3Y=X
41mg:xW(J
b[?6/#N
SNOBOL GptJQ=pV
OUTPUT = "Hello, world!" [#kfl
END %+ig7a:
BHOxwW{
<w(UDZ
SQL ;#P@(ZVT
create table MESSAGE (TEXT char(15)); "X g@X5BG
insert into MESSAGE (TEXT) values ('Hello, world!'); m'XzZmI
select TEXT from MESSAGE; Hu|NS {Ke-
drop table MESSAGE; R{\vOw:*
C;}~C:aJ
+|).dm
Tcl E:T<mI?d
#!/usr/local/bin/tcl {N[IjY
puts "Hello, world!" !m^;Apuy
7gfNe kr~W
D)8&v`LS
TScript (]^9>3{|
? "Hello, world!" k'&BAC.K,
o*eU0
n'v[[bmu
Turing Yvs)H'n=
put "Hello, world!" kih;'>H<
_N$3c<dY'
RlyF#X#7{
UNIX-style shell )&