“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。 [88{@)
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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》。 .c: )Qli
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以下是用不同语言写成的Hello World程序的几个例子: Tr$i=
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Ada e^Aa!
with Ada.Text_Io; use Ada.Text_Io; %GS\1 Q%
procedure Hello is yFi6jN#~
begin n_u`B|^Pj
Put_Line ("Hello, world!"); j,4,zA1j|
end Hello; `>\4"`I
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lc"qqt
汇编语言 [='p!7z
aSTFcz"
x86 CPU,DOS,TASM Ny B&uf
MODEL SMALL y]J3hKs
IDEAL }ymc5-
STACK 100H FXeV6zfrE
=Iy/cHK
DATASEG Dw*Arc+3V
HW DB 'Hello, world!$' ^A- sS~w
^~,
ndH{
CODESEG BL0|\&*1
MOV AX, @data KCl &H
MOV DS, AX hc6.#~i
MOV DX, OFFSET HW zdqnL^wb
MOV AH, 09H {f&NStiB
INT 21H 0Ux<16#
MOV AX, 4C00H 4uX,uEa
INT 21H 6mi$.'
qP
END tnN'V
yS+(<
E3LBPXK
x86 CPU,GNU/Linux,NASM db<q-u
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). jzMhJ
;Enter this into "hello.asm" then type: 7TnM4@*f
;"nasm -f elf hello.asm" ([[)Ub$U
;"ld hello.o -o hello" /z..5r^,ZZ
;"./hello" .r7D)xNa@
Q6eN+i2 ;
section .data ;data section declaration y{YXf!AS
msg db 'Hello World!',0AH }Z"28?
len equ $-msg ;string length kSB3KR;~n
"$]ls9-%n
section .text ;code section declaration - J{Dxz
global _start ;entry point (start of execution) {3.*7gnY\L
_start: mov edx,len ;string length |OOXh[y
mov ecx,msg ;string start Td5bDO
mov ebx,1 ;file handle: stdout ss/h[4h4h
mov eax,4 ;sys_write DgC3>
yL
int 80h ;kernel system call 3Ca
\`m)l
n}=rj7
mov ebx,0 ;return value 4U}zJP(L
mov eax,1 ;sys_exit k\nH&nb
int 80h ;kernel system call fE'-.nA+
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)\0Ug7]?
x86 CPU,Windows,MASM32 ^WmGo]<B_
.386 \5t`p67Ve_
.model flat,stdcall ESn6D@"
option casemap:none p(~Y"
H
;Include 文件定义 D~5yj&&T;
include windows.inc 4[2=L9MIo~
include user32.inc 45?*:)l:
includelib user32.lib w'!ECm>*`
include kernel32.inc &$<(D0
includelib kernel32.lib gW'P`Oxw
;数据段 uE"5 cq'B/
.data dFdlB`L
szCaption db 'A MessageBox!',0 $*YC7f
szText db 'Hello,world!',0 u)tHOV>&
;代码段 N[0
xqQ
.code a3Z:C!|O'
start: mYiSR
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK UaH26fWs
invoke ExitProcess,NULL lTxY6vi
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> @c6"RHG9
end start \s.1R/TyD
rny@n^F
q1U&vZ3]c
AWK i:V0fBR[>
BEGIN { print "Hello, world!" } rn5"o8|
: :F!
1P(%9
BASIC K~`n}_:
传统版BASIC(例如GWBASIC): NS7@8 #C
,DexJ1
10 PRINT "Hello, world!" I~d#p ]>
20 END n33JTqX
30A`\+^f
或在提示符输入: '9IP;
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?"Hello, world!":END 2=igS#h
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现代版BASIC(例如Quick BASIC): Ix*BI9E
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Print "Hello, world!" wrz+2EP`
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以下的语句在Quick BASIC中同样有效: M3DxapG
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? "Hello,world!" }s`jl``PM
&_<VZS
OT-n\sL$
BCPL RY\{=f
GET "LIBHDR" KU1+<OCh
b}ySZlmy
LET START () BE cxtLy&C
$( hg%@ W
WRITES ("Hello, world!*N") T)b3N|ONB
$) :'5G_4y)h
xDPQG`6
wm); aWP
Befunge s,eld@
"!dlrow olleH">v >/7KL2*
, 2uvQf&,
^_@ s(1_:
}ZEfT]
w o-O_uZB
Brainfuck #2_o[/&}x@
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< YWt"|
+++++++++++++++.>.+++.------.--------.>+.>. qR [}EX&3
=q_&*'
91-P)%?
C [<#<:h&\
#include <stdio.h> p{A}p9sjx
5uQv
int main(void) p{mxk)A
{ '#cT4_D^lI
printf("Hello, world!\n"); zznPD%#Sc
return 0; K$MJ#Zx^
} ;whFaQi 4
#JJp:S~`
xFsB?d
C++ kWZ/ej
#include <iostream> jOoIF/So
"|.+L
int main() 8\qCj.>S
{ &[?u1qQ%o
std::cout << "Hello, world!" << std::endl; 7h9 fQ&y
return 0; v$gMLu=
} c8k6(#\
&+E'1h10
K#9(|2J%
C++/CLI AmT|%j&3
int main() ~pd1)
{ 4
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System::Console::WriteLine("Hello, world!"); Vu|Br
} -V;0_Nx7p
)8 "EI-/.
68&6J's;
C# (C Sharp) Pe+ 8~0o=R
class HelloWorldApp U /1[~429
{ mV:RmA
public static void Main() Q|j@#@O 1
{ ,?0-=o
System.Console.WriteLine("Hello, world!"); BNL8hK`D
} L}e"nzTE6I
} a@5xz)
877EKvsiC
q
G :jnl
COBOL j=xtnIq
IDENTIFICATION DIVISION. @\%)'WU
PROGRAM-ID. HELLO-WORLD. 3PvZ_!G
P`Hd*xh".j
ENVIRONMENT DIVISION. _V_8p)%
a'_MhJ zs
DATA DIVISION. \p>]G[g
an$]IN
PROCEDURE DIVISION. G*vpf~q?
DISPLAY "Hello, world!". p:[`%<j0
STOP RUN. ?BHWzo!
1WUFk ?p
j,|1y5f
Common Lisp p0[,$$pM
(format t "Hello world!~%") |"Xi%CQ2
E]u'MX
5oT2)yz
DOS批处理 =BqaGXr
@echo off 5I8FD".i
echo "Hello, world!" [x$eF~Kp
-CU7u=*b
A]tf>H#1
Eiffel s{"`=dKT
class HELLO_WORLD I |<+'G
9z|>roNe
creation L6[rvM|9_
make L5zG0mC8
feature DK@w^ZW6JA
make is e~t}z_>F
local :"<B@Z
io:BASIC_IO 6PzN>+t^y
do 7/^TwNsv
!!io ~q8V<@?
io.put_string("%N Hello, world!") Zv1Bju*y
end -- make 7'{Yz
end -- class HELLO_WORLD r'9=kx
Y6;0khp
=XacG}_
Erlang Cdt,//xrz
-module(hello). h-2E9Z
-export([hello_world/0]). OU)p)Y_z
mf*9^}l+Zn
hello_world() -> io:fwrite("Hello, World!\n"). G>q{~HE1
s!j(nUd/
Eis%)oE
Forth `jUS{ 3^
." Hello, world!" CR B(en5|
R@7GCj
JR a*;_
Fortran (}~eD
WRITE(*,10) wCq)w=,
10 FORMAT('Hello, World!') w371.84
STOP *xv/b=
END XC$+ `?
Y&05
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HTML G7/?hky 0.
<HTML> qh)!| B
<HEAD> i"sYf9,
<TITLE> Hello World! </TITLE> N}l]Ilm$34
</HEAD> 3Q*RR"3
<BODY> uZ0 $s$
<p>Hello World!</p> SRG!G]?-
</BODY> !7ZfT?&
</HTML> bW
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Iu1Sj`A
3|83Jnh
HQ9+ t0asW5f
H 2LxVt@_R!%
OuBMVn
eX
l%Qs#Y
INTERCAL zW"3K
PLEASE DO ,1 <- #13 MR)KLM0
DO ,1 SUB #1 <- #238 *v:,rh
DO ,1 SUB #2 <- #112 #nc@!+
DO ,1 SUB #3 <- #112 }*}`)rj,
DO ,1 SUB #4 <- #0 L>5!3b=b
DO ,1 SUB #5 <- #64 K&D}!.~/
DO ,1 SUB #6 <- #238 e@2Vn? 5
DO ,1 SUB #7 <- #26 LHHDt<+B
DO ,1 SUB #8 <- #248 vq0M[Vy
DO ,1 SUB #9 <- #168 Za:BJ:
DO ,1 SUB #10 <- #24 4na4Jsq{
DO ,1 SUB #11 <- #16 #o"HD6e
DO ,1 SUB #12 <- #158 ' ! UF&
DO ,1 SUB #13 <- #52 >h!.Gj
PLEASE READ OUT ,1 8v)~J}[ Bz
PLEASE GIVE UP !{]v='
oVEr {K)
,5<`+w#a
Java 2GD mZl
public class Hello F&L?J_=
{ { Sliy'
public static void main(String[] args) aD/,c1
{ <R~~yW:H
System.out.println("Hello, world!"); *Xtc`XH
} 0p>:rU~
} -{:LxE
FvI0 J
dVmAMQk.g
JSP <1g 1hqK3
<% E-U;8cOMv
out.print("Hello, world!"); SK c
T
%> PcSoG\-G<
dpGQ0EzH^
P!6 e
MIXAL n"d)
TERM EQU 19 the MIX console device number l#vw
L15
ORIG 1000 start address QRmQ>
START OUT MSG(TERM) output data at address MSG g*AD$":
HLT halt execution u&d v[
MSG ALF "MIXAL" Yqhz(&*)
ALF " HELL" 9uq+Ve>
ALF "O WOR" 8apKp?~yW
ALF "LD " Hj4w
i|
END START end of the program x+:,b~Skk
2wuW5H8w{
KlqJEtO_
Nuva @8M2'R\
<..直接输出..> VF!kr1n!
Hello, world! ^1Zq0
p|9ECdU>;
<..或者..> dG~B3xg;5i
??%T
<. b5 C}K
// 不带换行 v"('_!
? "Hello, world!" q;a*gqt
yE|}
r
// 或者 z.9FDQLp
\,bFm,kC?
// 带换行 Y %D*O
?? 'Hello, world!' WWs[]zr
.> g@6X|W5,J
wR<QeH'V
:-WCW);N
OCaml Jgv>$u
let main () = fJ"~XTN}T
print_endline "Hello world!";; bZ22O"F
gZ >orZL'
w4MMo
Pascal xEZVsz
program Hello; NF)\">Ye
begin ^s2-jkK
writeln('Hello, world!'); FZ.z'3I
end. Ty4%du6?d
' /<b[
k$x
'v#
Perl Rb}&c)4
#!/usr/local/bin/perl ^`r|3c0
print "Hello, world!\n"; ![hhPYmV
_DvPF~
G8DIig<
PHP ,bwopRcA
<?php AFB 7s z
print("Hello, world!"); ?NzeP?g
?> .L{+O6*c
nIKT w
dVtLYx
Pike qjEWk."
#!/usr/local/bin/pike k+GK1Yl
int main() 2#A9D.- h
{ *7fPp8k+Z;
write("Hello, world!\n"); [W\atmd"
return 0; (Rg!km%2T
} [ma#8p)
,<j5i?
I;.E}k
PL/I )qP{X,Uf
Test: procedure options(main); :!YJ3:\
declare My_String char(20) varying initialize('Hello, world!'); I)%jPH:ua
put skip list(My_String); (5DGs_>
end Test; Vh9s.=*P@
#~-&&S4a.J
CJtjn
Prolog `1}?{ud
goal `iayh
write("hello,world!"). wOkJ:k
l=?y=2+
oUKbzr/C
Python 0?;Hmq3
#!/usr/local/bin/python >rS<