“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。 QORN9SY
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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》。 Jl "mL
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以下是用不同语言写成的Hello World程序的几个例子: rDdzxrKg{
Ada )NR Q2
with Ada.Text_Io; use Ada.Text_Io; .`CZUKG
procedure Hello is R<x'l=,D(
begin 4:9KR[y/
Put_Line ("Hello, world!"); {s3z"OV
end Hello; 8UkKU_Uso
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LB/C-n.`
汇编语言 K 0hu:1l)
mA7m
x86 CPU,DOS,TASM 3Oa*%kP+
MODEL SMALL @/&b;s73
IDEAL ESoAzo,u
STACK 100H +\"-P72vjk
gDIBnH
DATASEG J1XL<7
HW DB 'Hello, world!$' Db"DG(
;#MB7A
CODESEG al+ #y)+
MOV AX, @data i!~'M;S
MOV DS, AX ""svDfy$
MOV DX, OFFSET HW iE.-FZc
MOV AH, 09H M/z}p
INT 21H 8z5# ]u;
MOV AX, 4C00H $0^P0RAH
INT 21H {7MjP+\
END !,Zp? g)
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C>Is1i^9
x86 CPU,GNU/Linux,NASM %c)[
kAU!
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). B cj/y4"
;Enter this into "hello.asm" then type: h3gWOU
;"nasm -f elf hello.asm" _8G>&K3T<
;"ld hello.o -o hello" g+PPW88P;
;"./hello" vB!|\eJ
_ q(Q
section .data ;data section declaration )IT6vU"-yd
msg db 'Hello World!',0AH k'_ P7
len equ $-msg ;string length
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, %YBG1E[y
section .text ;code section declaration I^Z8PEc+
global _start ;entry point (start of execution) [_xyl e
_start: mov edx,len ;string length dGwszziuK
mov ecx,msg ;string start V,EF'-F
mov ebx,1 ;file handle: stdout nY $tp
mov eax,4 ;sys_write ^Y{D^\},
int 80h ;kernel system call *V(Fn-6(
H6aM&r9}
mov ebx,0 ;return value ):EBgg4-N
mov eax,1 ;sys_exit ESb
]}c:
int 80h ;kernel system call O3V.^_k;
D@X+{
/XS&d%y
x86 CPU,Windows,MASM32 E2B>b[
.386 j<"nO(
.model flat,stdcall KjB/.4lLq
option casemap:none ~:_0CKa!
;Include 文件定义 YxJD _R
include windows.inc 9N[EZhW
include user32.inc `B8tmW#
includelib user32.lib nT#JOmv
include kernel32.inc wcDjg&:=ml
includelib kernel32.lib 5jq=_mHt
;数据段 @6o]chJo
.data a <X0e>
szCaption db 'A MessageBox!',0 Mp\<cE
szText db 'Hello,world!',0 7m5Co>NkuK
;代码段 dRvin[R8
.code (bn
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start: + E"[
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK \.e4.[%[2-
invoke ExitProcess,NULL }jF+`!*!
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 6ri\>QrF
end start *@V*~^V"J[
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ep(g`e
AWK U\+&cob.
BEGIN { print "Hello, world!" } /vE]2Io
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BASIC ED} 31L
传统版BASIC(例如GWBASIC): K
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> 8]j
10 PRINT "Hello, world!" rn.\tDeA
20 END cy~oPj]j
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或在提示符输入: AW5iV3
y,+[$u7h
?"Hello, world!":END DlE_W+F
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现代版BASIC(例如Quick BASIC): U=Bn>F}y\
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Print "Hello, world!" IPA*-I57
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以下的语句在Quick BASIC中同样有效: ?)3jqQ.
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? "Hello,world!" >Cd9fJ&0gP
$M"0BZQ?y!
O2-M1sd$
BCPL L&Qi@D0P
GET "LIBHDR" 6!EYrX}rI[
G5]1s
LET START () BE 9-jO,l
$( {,O`rW_eS
WRITES ("Hello, world!*N") aw}+'(?8]
$) \Rk$t7ZH
<rK=9"$y(t
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Befunge :h";c"
"!dlrow olleH">v M:ai<TZ]
, m$y]Lf
^_@ p {%t q$}.
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n+2J Dq|?p
Brainfuck 't>r
sp+#
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< K}I0o!(#
+++++++++++++++.>.+++.------.--------.>+.>. ]T{E
(9
]" x\=A
9]_GNk-D
C !}&"W,,0
#include <stdio.h> r!/0 j)
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int main(void) Sw!
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{ & QZV q"
printf("Hello, world!\n"); $T
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return 0; -a) T6:e
} O25mkX
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C++ <lFY7'aY
#include <iostream> m7 XjP2
~LE[,
I:q
int main() )bWrd$X
{ O<,r>b,
std::cout << "Hello, world!" << std::endl; ,@Z_{,b
return 0; a20w,
} 4'At.<]jL
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q9}2
C++/CLI shi
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int main() dl/X."iv!
{ ;A^K_w'
System::Console::WriteLine("Hello, world!"); |"}4*V_ *
} DNth4z
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C# (C Sharp) kr_oUXiX
class HelloWorldApp I($,9|9F
{ mCb 9*|
public static void Main() \C\gn]Z
{ 8Uj:
System.Console.WriteLine("Hello, world!"); cgNt_8qC
} ~ v1W
} `Wf5
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e(\Q)re5Q
COBOL zHxmA
IDENTIFICATION DIVISION. 9A;6x$s
PROGRAM-ID. HELLO-WORLD. wA0eG@xi)
o8D{dS>,PL
ENVIRONMENT DIVISION. vw
rRZ"2
@6%gIsj<H
DATA DIVISION. 2YIF=YWO},
G)+Ff5e0L[
PROCEDURE DIVISION. 6D*chvNA;
DISPLAY "Hello, world!". Zps&[;R$-
STOP RUN. i]M"Cu*
91;HiILgT
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Common Lisp ?Y!U*& 7
(format t "Hello world!~%") 2}`R"MeS
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i/:5jI|
DOS批处理 ?Y!^I2Y6
@echo off @W [{2d
echo "Hello, world!" i_YW;x
97x%2.\:
;tN4HiN
Eiffel [`bZ5*&
class HELLO_WORLD *SGlqR['\e
D{svR-~T
creation eYDgEM
make 0 0,9azs
feature 5&|5 a} 8
make is pDhY%w#
local lu3.KOD/
io:BASIC_IO V* Qe5j9
do $F1_^A[
!!io 3B"7VBK{
io.put_string("%N Hello, world!") As}eUm)B5c
end -- make u[mY!(>nQ
end -- class HELLO_WORLD Gy^FrF
g =x"cs/[
z"av|(?d
Erlang d
qpgf@
-module(hello). 0:PSt_33F
-export([hello_world/0]). w7ZG oh(
r:#Q9EA
hello_world() -> io:fwrite("Hello, World!\n"). uri*lC
_jDS"
tWRf'n[+]
Forth %ph"PR/t?
." Hello, world!" CR 4zX=3iBt
Q%M_
Dpj-{q7C
Fortran ]F_r6 *<
WRITE(*,10) :Fo4O'UC
10 FORMAT('Hello, World!') Uir*%*4:
STOP ?+Hp?i$1
END kXCY))vnn
\L
%q[
Ik-oI=>.
HTML 1(#RN9
<HTML>
x~Pvh+O
<HEAD> 6mAB(X^+
<TITLE> Hello World! </TITLE> [lOf|^9
</HEAD> @jKDj]\
<BODY> ,N0uR@GN
<p>Hello World!</p> )8bFGX7|
</BODY> !3QRzkJX~
</HTML> 'FqEB]gu
km}MqBQl
A ~XOK;sB
HQ9+ >.LgsMRIKi
H RCQAtBd
e|~C?Ow'J
QK'`=MU
INTERCAL "]w!`^'_
PLEASE DO ,1 <- #13 +>u>`|
DO ,1 SUB #1 <- #238 h$|3dz N
DO ,1 SUB #2 <- #112 pIvfmIm
DO ,1 SUB #3 <- #112 QjqBO+
DO ,1 SUB #4 <- #0 hXPocP
DO ,1 SUB #5 <- #64 #_{0Ndp2
DO ,1 SUB #6 <- #238 tw-fAMwU
DO ,1 SUB #7 <- #26 yT&x`3f"i
DO ,1 SUB #8 <- #248 n{L:MT9TD
DO ,1 SUB #9 <- #168 SF"#\{cjj
DO ,1 SUB #10 <- #24 k=ts&9\
DO ,1 SUB #11 <- #16 ;Na^]32
DO ,1 SUB #12 <- #158 PaxK^*
DO ,1 SUB #13 <- #52 AzxL%,_
PLEASE READ OUT ,1 UDVf@[[hN
PLEASE GIVE UP x'zihDOI
0s)cVYppe
OWZS3Y+
Java q;ZLaX\bFl
public class Hello d&5c_6oW
{ >6IXuq
public static void main(String[] args) /MhS=gVxM
{ HLM;EZ
System.out.println("Hello, world!"); _/ct=
} pFEZDf}:
} \WiqN*ZF
Q:pzL
"bT
M5F(<,n;
JSP gA{'Q\
<% ka!Bmv)
out.print("Hello, world!"); -}E)M}W
%> Ri;=aZ5m
l 4!kxXf-<
[7'#~[a~
MIXAL @81-kdTx
TERM EQU 19 the MIX console device number sRi?]9JIl
ORIG 1000 start address _O"L1Let
START OUT MSG(TERM) output data at address MSG C1KfXC*|L
HLT halt execution B>sCP"/uV
MSG ALF "MIXAL" 8W;xi:CC
ALF " HELL" c%ZeX%p
ALF "O WOR" E(%
XVr0W
ALF "LD " AfUZO^<
END START end of the program qQL.c+%L
5dqQws-,?1
8^8>qSD1
Nuva A%h~Z
a
<..直接输出..> ]7v81G5E
Hello, world! sZ]'DH&_(
_2]O^$L
<..或者..> ;CA ?eI
#FEa 5
<. UOw~rK
// 不带换行 l6V%"Lo/)
? "Hello, world!" IhUW=1&J
,GP!fsK
// 或者 :
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~B<97x(X
// 带换行 09G9nu ;&{
?? 'Hello, world!' XO 0>t{G
.> z<n"{%
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oDz*~{BHg
OCaml o>0O@NE
let main () = 1$);V,DK!
print_endline "Hello world!";; c/b%T
('T4Db
EbG_43SV
Pascal m{vT_ei
program Hello; a_Z.J3
begin ri"?,}(
writeln('Hello, world!'); -T 2~W!
end. ]vRVo6@ k
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Hr
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Perl T}V7SD.
#!/usr/local/bin/perl lr`?yn1D(
print "Hello, world!\n"; r4 9UJE
?68$3;
Sc% aJ1
PHP /z/hUa
<?php |.y>[+Qb*
print("Hello, world!"); L& I`
#
?> b;Hm\aK
:/>7$)+
I%pCm||p
Pike |)28=Z|Z
#!/usr/local/bin/pike N{ : [/
int main() #:]vUQ
{ iPA@<D%
write("Hello, world!\n"); -zPm{a
return 0; Dm>T"4B`/
} o~Bk0V=
zA2UFax=
L.SDM z
PL/I 9+]ZH.(YE
Test: procedure options(main); X
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declare My_String char(20) varying initialize('Hello, world!'); dK:l&R
put skip list(My_String); | \AbL!u
end Test; enPzy:C
Coga-: 2vu
yonJd
Prolog aw%>YrJ
goal "CIpo/ebL
write("hello,world!"). OI'uH$y
u86J.K1Q
^fA3<|
Python JOA%Y;`<#
#!/usr/local/bin/python :X3rd|;kc
print "Hello, world!" H%*~l
^ze@#Cp
j'G"ZPw1
REXX r$b:1 C~
say "Hello, world!" !JT<(I2
gUksO!7^1
on]\J
Ruby ~Y1"k]J
#!/usr/bin/ruby V->.|[J
print "Hello, world!\n" o%vIkXw
RH<@c^ S
j)6@q@P/
Scheme /uy&2l
(display "Hello, world!") ^?H\*N4
(newline) 9`ri
J4zl
sL!;hKK
Nb#H@zm
sed (需要至少一行输入) {Uik|
sed -ne '1s/.*/Hello, world!/p' 9)G:::8u7
,$hQ(yF
SlH7-"Ag
Smalltalk G/x3wR
Transcript show: 'Hello, world!' bl(BA}<
@"q~AY
$ka1X&f
SNOBOL +W V@o'
OUTPUT = "Hello, world!" 5A0KV7N5
END y}(_SU
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SQL 9`LU=Xv/
create table MESSAGE (TEXT char(15)); h#(.(d
insert into MESSAGE (TEXT) values ('Hello, world!'); :d!i[W*
select TEXT from MESSAGE; E'S<L|A/
drop table MESSAGE; 8.Pcr<