“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。 BY.k.]/
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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》。 'L7qf'RV
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以下是用不同语言写成的Hello World程序的几个例子: :{2~s
Ada HeO:=OE~>
with Ada.Text_Io; use Ada.Text_Io; Z(7kwhP[`
procedure Hello is i1|>JM[V
begin dYwkP^KB
Put_Line ("Hello, world!"); #n'.a1R
end Hello; >UMxlvTg&
yo=L1;H
a8f#q]TyQ
汇编语言 6,A|9UX=`
H.m]Dm,z
x86 CPU,DOS,TASM +bS\iw +
MODEL SMALL bDM },(
IDEAL `^Vd*
STACK 100H oGRk/@
RkE)2q[5
DATASEG uhh7Ft#H
HW DB 'Hello, world!$' Qz,2PO
Ifn|wrx;g
CODESEG Tb$))O}
MOV AX, @data y)fMVD"(
MOV DS, AX q1T)H2S
MOV DX, OFFSET HW AP=h*1udk
MOV AH, 09H /)6T>/
INT 21H w6i2>nu_O
MOV AX, 4C00H x
;|HT
INT 21H hBjU(}\3
END KClkPL!jP
1ysfpX{=
WR{m?neE_N
x86 CPU,GNU/Linux,NASM Jy)=TJ!y
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Y"H`+UV
;Enter this into "hello.asm" then type: Hu"$)V
;"nasm -f elf hello.asm" 509T?\r
;"ld hello.o -o hello" ]SCHni_
;"./hello" ^eh.Iml'@
7GOBb|
section .data ;data section declaration -G.N
msg db 'Hello World!',0AH ]p`y
len equ $-msg ;string length l8FJ \5'M
5vyg-'
section .text ;code section declaration A|\A|8=b
global _start ;entry point (start of execution) ,`}yJ*7
_start: mov edx,len ;string length pUHgjwT'U
mov ecx,msg ;string start "E\vdhk
mov ebx,1 ;file handle: stdout ,~Mf2Y#m0p
mov eax,4 ;sys_write ^%$IdDx
int 80h ;kernel system call ij$NTY=u
;k!.ey$S
mov ebx,0 ;return value #<xFO^TB
mov eax,1 ;sys_exit &<N8d(
int 80h ;kernel system call ,^([aK
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SaXt"Ju,AH
x86 CPU,Windows,MASM32 G'\[dwD,u
.386 C}h(WOcr`X
.model flat,stdcall K1 "HJsj
option casemap:none pTCD1)
;Include 文件定义 k+9F;p7
include windows.inc h-96 2(LG
include user32.inc _<(xjWp 8
includelib user32.lib $VmV>NZ
include kernel32.inc VZi1b0k1.
includelib kernel32.lib 3N_KNW
;数据段 G3_7e A#;
.data KR( apO
szCaption db 'A MessageBox!',0 lwQ!sH[M
szText db 'Hello,world!',0 !igPyhi,hl
;代码段 d~aTjf
.code z:-{Y2F
start: 4mDHAR%D
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK gX{j$]^6G8
invoke ExitProcess,NULL >
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;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> \^(#b,k#
end start zeMV_rW~
i3)3.WK^
a?y ucA
AWK "q?(rx;
BEGIN { print "Hello, world!" } spA|[\Nl
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tjG3B({
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BASIC JYc:@\
传统版BASIC(例如GWBASIC): OAkqPG&w
%1{S{FB
10 PRINT "Hello, world!" NN7KwVg
20 END Z2W&_(^.h
=_OJ
7K'
或在提示符输入: a0ms9%Y;Q[
;rf{T[i
?"Hello, world!":END :7(fBf5
Sqp91[,
现代版BASIC(例如Quick BASIC): L[zTT\a
S_sHwObFu|
Print "Hello, world!"
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$D`Kz*/.
以下的语句在Quick BASIC中同样有效: 3mo<O}}
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? "Hello,world!" :tV"uWZFU
bzG vnaTt
J)g
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BCPL Lj /^cx
GET "LIBHDR" W(qK?"s2
n!zB+hW
LET START () BE ):Fg {7b]n
$( Wgf
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WRITES ("Hello, world!*N") 9vi+[3s/=;
$) _&HFKpHQ
vmgd
s[4 qC
Befunge F4=X(P_6
"!dlrow olleH">v Ne9VRM
P
, c*owP
^_@ g#P]72TQ
|+h x2?Nv
Ks3YrKk;p
Brainfuck -wUT@a
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< =n.&N
+++++++++++++++.>.+++.------.--------.>+.>. {U9{*e$=
GB+$ed5@<
7IUJHc[R?
C ^d>m`*px
#include <stdio.h> l )r^|9{
0]ai*\,W7~
int main(void) sfVzVS[
{ `_&vvJPn@!
printf("Hello, world!\n"); K
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return 0; "'+/ax[{
} a"cw%L
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r{~b4~kAf5
C++ f/
3'lPK^
#include <iostream> 3
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dM"5obEb
int main() <&+0[9x
{ \]FPv7!
std::cout << "Hello, world!" << std::endl; p>U= Jg
return 0; *"jlsI
} ']!wc8m1"
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q
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C++/CLI {h|kx/4{m
int main() }V/iU_)
{ Gp_flGdGQ
System::Console::WriteLine("Hello, world!"); rZAP3)dA
} P e}
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MO1H?Uhx
ow+_g R-
C# (C Sharp) 6EY0Fjsi
class HelloWorldApp D=f$-rn
{ 8XCT[X
public static void Main() A(XX2f!i
{ {iQ4jJ`n
System.Console.WriteLine("Hello, world!"); #T>pu/EQX_
} Bi/E{k,
} Ea[SS@'R
Yru,YA
fG@]G9Z
COBOL H-%
B<7
IDENTIFICATION DIVISION. M^n^wz
PROGRAM-ID. HELLO-WORLD.
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LCSJIt
ENVIRONMENT DIVISION. 7?y([i\y
n482?Wp
DATA DIVISION. /mn'9=ks
ziQ&M\
PROCEDURE DIVISION. kb\\F:w(W
DISPLAY "Hello, world!". UD&pL'{s
STOP RUN. k]c$SzJ> /
MMQ\V(C
F\<{:wu
Common Lisp |QyZ:`0u
(format t "Hello world!~%") i2)$%M&
$b) k
[KEw5-=i@
DOS批处理 cU "uKR
@echo off TOx@Y$_9Q8
echo "Hello, world!" 4=njM`8Y'
[ mo9?
#,SPV&
Eiffel Jn\>Sz(96
class HELLO_WORLD N8*QAekN
m&--$sr
creation qjN*oM,
make ;YrmT9Jx6
feature fKkS_c
2
make is 9$ixjkIg
local F>k/;@d
io:BASIC_IO LP>GM=S#"
do dp }zG+
!!io Upc_"mkI.
io.put_string("%N Hello, world!") &8JK^zQq
end -- make :TP\pH 7E
end -- class HELLO_WORLD 7!
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%/r:iD
Erlang wYd{X 8$
-module(hello). xeRoif\4c
-export([hello_world/0]). SM.KM_%K
L}tP_ *
hello_world() -> io:fwrite("Hello, World!\n"). I9sQPa
?V =#x.9
we33GMxHl`
Forth u"U7aYGkY
." Hello, world!" CR cE*d(g
'Z6x\p
2GRv%:rZ
Fortran v+DXs!O{
WRITE(*,10) NqN}] nu6
10 FORMAT('Hello, World!') gq.l=xS
STOP *$Z?Owl7
END Aot9^@4])
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q]Af I(
HTML 6&"GTK
<HTML> {Ok]$0L
<HEAD> -=2V4WU~
<TITLE> Hello World! </TITLE> -T>i5'2)
</HEAD> V17!~
<BODY> Eu[/* t+l
<p>Hello World!</p> T@ zV
</BODY> qy/t<2'
</HTML> $AdBX}{
|u#7@&N1
,-SWrp`f
HQ9+ ?:i,%]zxC
H 8Q73h/3
WIw*//nw
MAL;XcRR
INTERCAL JD]uDuE
PLEASE DO ,1 <- #13 `r&]Ydu:
DO ,1 SUB #1 <- #238 Q6xA@"GJ
DO ,1 SUB #2 <- #112 ,hE989x<iI
DO ,1 SUB #3 <- #112 nNh5f]]
DO ,1 SUB #4 <- #0 #j)"#1IE2W
DO ,1 SUB #5 <- #64 8;x0U`}Ez(
DO ,1 SUB #6 <- #238 0@Z}.k30
DO ,1 SUB #7 <- #26 %RzCJxT
DO ,1 SUB #8 <- #248 '%y;{,g*
DO ,1 SUB #9 <- #168 KY\=D 2m
DO ,1 SUB #10 <- #24 &"^U=f@v
DO ,1 SUB #11 <- #16 Yw_!40`
DO ,1 SUB #12 <- #158 [gj>ey8T
DO ,1 SUB #13 <- #52 P+DIo7VTX
PLEASE READ OUT ,1 d-TpY*v
PLEASE GIVE UP E@4/<;eKK
/dHIm`. Z
`yO'-(@"gY
Java &_74h);2I:
public class Hello @4n>I+6*&
{ Q"H/RMo-
public static void main(String[] args) DKF
'*
{ t8`wO+4@
System.out.println("Hello, world!"); =Q*3\)7
} }
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} <
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s;-AZr)
lX"6m}~D
JSP P~%+KxwZQ
<% &0xM 2J
out.print("Hello, world!"); "uFwsjz&B
%> uaZHM@D
5]n\E?V'L
[v`kqL~
MIXAL :aH5=@[!y
TERM EQU 19 the MIX console device number gFsqCx<q
ORIG 1000 start address Eihn%Esa
START OUT MSG(TERM) output data at address MSG KD?b|y@
HLT halt execution bP> Kx-%q
MSG ALF "MIXAL" c=X+uO-
ALF " HELL" Xt
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ALF "O WOR" SmIcqM
ALF "LD " <>728;/C
END START end of the program na"!"C
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qHvUBx0
wE}Wh5
Nuva dCeLW
<..直接输出..> _*MK"
Hello, world! 3R0ioi 7
5DVYHN9c|
<..或者..> :2K@{~8r
72 |O&`O
<. ,Vw>3|C
// 不带换行 K6sXw[VC[
? "Hello, world!" 2;0eW&e
Rc
&m4|cw7
// 或者 G? XS-oSv
? ^W1WEBm
// 带换行 M:b#">M
?? 'Hello, world!' cqSXX++CS,
.> <f M}Kk
b $JS|
D:f=Z?L)>
OCaml 5doi4b>]!
let main () = w jD<"p;P
print_endline "Hello world!";; @XXPJq;J
gWzslgO6
h<TZJCt
Pascal 8-Y*b89
program Hello; L!lmy&1
begin P_w4
DU
writeln('Hello, world!'); ".N+nM~
end. ]%FAJ\
a4*976~![
"ayV8{m^3
Perl {(!JYz~P
#!/usr/local/bin/perl 1l"2 ~k
print "Hello, world!\n"; rM"27ud[`_
d?T!)w
b5LToy:
PHP `Y5LAt:
<?php -(]CFnD_N
print("Hello, world!"); f!`?_
?> N)GHQlgH
G(TFv\`vH
9$HBKcO
Pike )c{>@WM~
#!/usr/local/bin/pike 3ie
k>'T
int main() RYjK4xT?Y/
{ }b&lHr'Uw
write("Hello, world!\n"); ?VmgM"'md
return 0; oV0T
} 9K/EteS
2Y23!hw
|w}j!}u
PL/I dN)8r
Test: procedure options(main); 6dR+qJa6i
declare My_String char(20) varying initialize('Hello, world!'); $t):r@L
put skip list(My_String); ?J2A1iuq3
end Test; ~p?ArZb
gZ$
8Y7
Ne1Oz}
Prolog
x2"1,1%H7
goal CF{b Yf^%
write("hello,world!"). ]EX6Y
KD &nLm!
1"ZtE\{
"
Python 5lG\Z?
#!/usr/local/bin/python G|rE\h 2w
print "Hello, world!" E{u6<