“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。 aUqVcEU1
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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》。 K&\3j-8^
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以下是用不同语言写成的Hello World程序的几个例子: W=[..d
Ada /C'dW
with Ada.Text_Io; use Ada.Text_Io; e>OYJd0s
procedure Hello is mYE 8]4
begin U{)|z-n
Put_Line ("Hello, world!"); BEm~o#D
end Hello; I^CKq?V?:
K+`$*vS~ws
`T-lBwH
汇编语言 ,h#U<CnP#
7%%FYHMO:
x86 CPU,DOS,TASM "K!9^!4&
MODEL SMALL ZRK1UpP
IDEAL Fz3QSr7FU
STACK 100H iG.qMf.
_#kjiJj*
DATASEG y[pU8QSt
HW DB 'Hello, world!$' 8,5H^Bi
~ sC< V
CODESEG viLK\>>
MOV AX, @data Ot^<:\<`G
MOV DS, AX NV[_XXTv7
MOV DX, OFFSET HW l6AG!8H
MOV AH, 09H U&(TqRi,
INT 21H uTX0lu;
MOV AX, 4C00H Nydhal00
INT 21H &3o[^_Ti
END |x
Nd^
3
zF"GT
'&|]tu:q
x86 CPU,GNU/Linux,NASM N9[2k.oBH
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). "I7 Sed7
;Enter this into "hello.asm" then type: OLl?1
;"nasm -f elf hello.asm" Dd=iYMm7
;"ld hello.o -o hello" aS7%x>.A!
;"./hello" _6"YWR
Y!+q3`-%T
section .data ;data section declaration q%RPAe
msg db 'Hello World!',0AH 5@:c6(5$
len equ $-msg ;string length 1z#0CX}Y/H
dV:vM9+x
section .text ;code section declaration f<Co&^A
global _start ;entry point (start of execution) Uc?4!{$X
_start: mov edx,len ;string length
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mov ecx,msg ;string start d{gj8
mov ebx,1 ;file handle: stdout ~<)CI0=
mov eax,4 ;sys_write >_<J=8|E
int 80h ;kernel system call iJr 1w&GL$
GOzV#
mov ebx,0 ;return value NY& |:F
mov eax,1 ;sys_exit =s\RK
int 80h ;kernel system call :J'ibb1
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5W(S~}
x86 CPU,Windows,MASM32 ToNRY<!
.386 h|DKD.
.model flat,stdcall RyJN=;5p
option casemap:none [xrM){ItW
;Include 文件定义 1\~-No
include windows.inc E2
5:eEXa
include user32.inc qXb{A*J
includelib user32.lib HoFFce7o
include kernel32.inc ]rhxB4*1
includelib kernel32.lib ;`TSu5/
;数据段 ,J(+%#$UT
.data 3XOf-v:~
szCaption db 'A MessageBox!',0 4Y=sTXbFt
szText db 'Hello,world!',0 l$:.bwXXO
;代码段 h
/. ^iT
.code 5z$>M3
start: %U4w@jp
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK rLy<3
invoke ExitProcess,NULL 7n_'2qY
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ZgXn8O[a
end start YTtuR`
Ao%;!(\I%
`2j \(N,
AWK RyxEZ7dC<y
BEGIN { print "Hello, world!" } ~MgU"P>
0(
s
io\
H/eyc`
BASIC g#=~A&4q
传统版BASIC(例如GWBASIC): 1e0O-aT#Q
!.[N(%"
10 PRINT "Hello, world!" +&T;jad2
20 END EK-Qa<[|
`D#3
或在提示符输入: <K#]1xCA
[qMFLY$
?"Hello, world!":END v7L}I[f
K~?M?sa
现代版BASIC(例如Quick BASIC): [CfA\-gx<f
=>PBdW
Print "Hello, world!" T.=du$
8ol R#>
以下的语句在Quick BASIC中同样有效: }iK_7g`yKa
l9 K 3E<g
? "Hello,world!" <IX)D `mf
}-e
+h*.%P}o
BCPL VHyP@JB
GET "LIBHDR" rQ4i %.
y[}O(
LET START () BE pO~VI$7
$( ^w+jPT-n
WRITES ("Hello, world!*N") R]-$]koQO
$) .Fz5K&E=
f
+#
Od>^yhn
Befunge bwo{
Lw~
"!dlrow olleH">v 6Wos6_
, m-~eCFc
^_@ (f5v{S6b(
l<](8oc.
w
R/yOy^<
Brainfuck h%hE$2
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< I& `>6=)
+++++++++++++++.>.+++.------.--------.>+.>. 'k9?n)<DW
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C }>
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#include <stdio.h> e<wRA["
lZ3o3"
int main(void) t*fG;YOg
{ +3c!.] o;
printf("Hello, world!\n"); h-XMr_F
return 0; 2Qoj>Wy{
} A0NNB%4|/
$ljgFmR_
3b_tK^|'
C++ [":[\D'
#include <iostream> :qx>P_&y}z
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int main() 5 i1T?
{ MuQBn7F{c
std::cout << "Hello, world!" << std::endl; E0 nR Vg
return 0; 8Ee bWs*1
} brQkVt_)EE
cI)XXb4
>!j= {hK
C++/CLI a.|4`*1[;
int main() c=YJ:&/5&
{ b&$ ?.z
System::Console::WriteLine("Hello, world!"); ^J8sR4p#
} ^6?NYHMr=
~YIGOL"?
;%1ob f 89
C# (C Sharp) BO5gwvyI
class HelloWorldApp @-z#vJ5Qe{
{ QK5y%bTSA
public static void Main() 728}K^7:
{ 2$D
*~~
System.Console.WriteLine("Hello, world!"); iL-I#"qT,
} 7k<4/|CQ{
} 6~b~[gA
I#Q
Tmg.
7]_lSYwrb
COBOL K>k MKd1
IDENTIFICATION DIVISION. /H)K_H#|;
PROGRAM-ID. HELLO-WORLD. ]Q\Ogfjp
D_6GzgZ
ENVIRONMENT DIVISION. Z\=].[,w4
;Yrg4/Ipa
DATA DIVISION. o6pnTu
TQ?D*&
PROCEDURE DIVISION. Sx,O)
DISPLAY "Hello, world!". K_V44f1f
STOP RUN. @jW_
rj:<
e75k-
W{OlJRX8
Common Lisp ^n@.
(format t "Hello world!~%") p}KZ#"Q
$'f<4
@!\g+z_"
DOS批处理 p{j
}%)6n
@echo off x@+m_y
echo "Hello, world!" -aiQp@^/J
G"jKYW
q+{-p?;;
Eiffel I/bED~Z:a
class HELLO_WORLD ,jBd3GdlZ
QZBXI3%#s
creation 5/Ng!bW
make PXGS5,
feature QdKxuG
make is (o_fY.
local >4a@rT/
io:BASIC_IO .>0e?A4,5?
do A>6b
6
!!io pti`q)
io.put_string("%N Hello, world!") 9i)E<.6
end -- make \?[#>L4
end -- class HELLO_WORLD 3,j)PKf
;
-OpI,qyS
G7k0P-r,0
Erlang UA[2R1}d
-module(hello). ,\;;1Kq
-export([hello_world/0]). 1<]g7W
N2_j[Pe
hello_world() -> io:fwrite("Hello, World!\n"). (NUk{MTX
?JTy+V2t
f>JuxX\G
Forth pN<wO1\9
." Hello, world!" CR pb`F_->uq
4Vj|k\vE4
V *=To
Fortran X75>C<
WRITE(*,10) uROt h_/
10 FORMAT('Hello, World!') -
Z "w
STOP FxSBxz<N-A
END (Q !4\Gy
<@n/[ +3
cA"',N8!5
HTML lTPo2-j/eK
<HTML> ^RG6h
<HEAD> : j&M&+
<TITLE> Hello World! </TITLE> "U34D1I)#
</HEAD> }N5>^y
<BODY> ;C%40;Q
<p>Hello World!</p> 59";{"sw
</BODY> lIO.LF3
</HTML> R2Fh
WiL
)W'l^R4W
FG7}MUu
HQ9+ |,bsMJh0
H ]]$s"F<
*L8Pj`zR
Q44Pg$jp
INTERCAL ks7g*; 3{@
PLEASE DO ,1 <- #13 38!$9)
DO ,1 SUB #1 <- #238 {*H&NI
DO ,1 SUB #2 <- #112 v$"#9oh
DO ,1 SUB #3 <- #112 V\@h<%{^%7
DO ,1 SUB #4 <- #0 _3h(R`VdWO
DO ,1 SUB #5 <- #64 cTmoz.0
DO ,1 SUB #6 <- #238 JwbC3t):@
DO ,1 SUB #7 <- #26 Nm%&xm
DO ,1 SUB #8 <- #248 i]*Wt8~!
DO ,1 SUB #9 <- #168 (7x5
DO ,1 SUB #10 <- #24 ,v:m
DO ,1 SUB #11 <- #16 ,FX;-nP%
DO ,1 SUB #12 <- #158 DF'-dh</*
DO ,1 SUB #13 <- #52 m8H|cQ@Uu
PLEASE READ OUT ,1 S pDVD
PLEASE GIVE UP oD_je~b)
F"j0;}+N
XF(I$Mxl6
Java 0F sz
public class Hello aQwc Py|1R
{ bC?uyo"
public static void main(String[] args) 8qn1?Lb
{ >/1N#S#9
System.out.println("Hello, world!"); %\=5,9A\
} 8Cz_LyL
} xh[Mmq/R
HDYr?t~V
H
r? G_L
JSP *. l,_68
<% E\#hcvP
out.print("Hello, world!"); 4H8vB^
%> A D=@
/j./
{gluK#Qm
MIXAL Dna0M0
TERM EQU 19 the MIX console device number $"C]y$}
ORIG 1000 start address 0 V*Di2
START OUT MSG(TERM) output data at address MSG r#*kx# "
HLT halt execution oabc=N!7r
MSG ALF "MIXAL" R9D<lX0%
ALF " HELL" JPS22i)P
ALF "O WOR" q5?g/-_0[
ALF "LD " %TdZ_
END START end of the program MVz=:2)J2
ji<b#YO4
ws
Lg6
Nuva U .hV1
<..直接输出..> mJR vC%
Hello, world! <Bb$d@c
V(1Ldl'a
<..或者..> +:?-Xd:p
8I$B^,N
<. @Z~lM5n$8
// 不带换行 BKfcK>%g
? "Hello, world!" ?1i>b->
!Sfy'v.
// 或者 R!;tF|]
8s pGDg\g
// 带换行 CL|t!+wU/
?? 'Hello, world!' :}TT1@
.> ej>8$^y
AU} e^1h
\v{tK;
OCaml F"VNz^6laV
let main () = /J`8Gk59
print_endline "Hello world!";; ,x!P|\w.G{
[sp=nG7i&
Rv
?Go2
Pascal 2Ch!LS:+
program Hello; g
!w7Yv
begin X|t?{.p
writeln('Hello, world!'); h<\o[n7j
end. 7g_:Gv~v
?JDZDPVJ)
!YSAQi ;I
Perl aM5zYj`pW
#!/usr/local/bin/perl ~PP*k QZlJ
print "Hello, world!\n"; mb~w .~%
048BQ
#sdW3m_%
PHP FiJJe
<?php _,_>B8
print("Hello, world!"); o0&jel1a
?> bEP-I5j1t
#>GUfhou)
:XEr{X
Pike xz[a3In+
#!/usr/local/bin/pike "AP''XNi
int main() He^+>XIam
{ YUJlQ2e(
write("Hello, world!\n"); VS@o_fUx)
return 0; kX."|]
} JYOyz+wNd
)Yz`
6
V;mKJ.d${
PL/I yd[}?
Test: procedure options(main); D{I^_~-\5
declare My_String char(20) varying initialize('Hello, world!'); lidzs<W-fW
put skip list(My_String); RxU6.5N
end Test; YFOSv]w
_C~e(/=z
2;r(?ebw
Prolog KG6ki_
goal &10vdAnBRC
write("hello,world!"). RzQ1Wq
55MsF}p
8:0QI kqk
Python /
*xP`'T
#!/usr/local/bin/python JVf8KHDj
print "Hello, world!" >|WNsjkU%
_JOrGVmD
aAiSP+#
REXX u*Z>&]W_
say "Hello, world!" U(]a(k<r
+'Pl?QyH
'A
.c*<_
Ruby ;X-~C.7k
#!/usr/bin/ruby 87c7p=/0`
print "Hello, world!\n" ]WR+>)ERb
/1ooOq]
>'wl)j$
Scheme trnjOm
(display "Hello, world!") 8<t6_* f
(newline) Pe8WBr;`
xCFk1%qf
R}c,ahd
sed (需要至少一行输入) %&5 !vK
sed -ne '1s/.*/Hello, world!/p' $UavM|
9KRHo%m
_O2},9L n
Smalltalk K,bv\j;f
Transcript show: 'Hello, world!' W,5A|Q~
U(3+*'8r,1
5:/
zbt\C
SNOBOL I!&|L0Qq
OUTPUT = "Hello, world!" ]#P9.c_}
END o0^..f
H !Z=}>TN
W76K/A<h>
SQL )(~4fA5j)
create table MESSAGE (TEXT char(15)); sufidi
insert into MESSAGE (TEXT) values ('Hello, world!'); _"SE^ _&